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NPTEL E-Business Week 8 Assignment Answers 2023

NPTEL E-Business Week 8 Assignment Solutions

1. Which of the following is benefit of RFID over Barcode a. Item level identification b. Keepin g item details in a code c. Low cost d. No need for a scanner

2. What are the three elements of an RFID setup? a. EPC, Savant, PML b. Tag, reader, middleware c. Tag. EP C , PML d. Tag. reader. EPC

3. Which of the following RFID tags is suitable for supply chain applications? a. Active read write tag b. Semi – active read write tag c. Passive read write tag d. Passive read only tag

4. Which of the following tag types have highest read range a. Passive b. Acti v e c. Semi-active d. Readonly

5. Which of the following technical concern may arise if an RFID tag is attached to an electric motor and sends distorted data: a. Ele c tromagnetic interferences b. Data formats in compatibility c. Standard incompatibility d. Lack of reader coordination

6. TIGER files are an important data source for a. GPS b. G IS c. RFID d. IOT

7. Which of the following is an IoT device a. GPS device b. RFID reader c. RFID ta g s d. GIS software

8. Mobile phones are a powerful loT device. You have a home security APP installed in the phone that not only shows the visuals from the home, it creates alert messages when some unusual movements happen in the home. This detection process is at the________ layer of IoT architecture. a. Integrated application b. Information processi n g c. Network construction d. Sensing and identification

9. Under which condition, barcode is a preferred option over RFID. a. The items are packed in a wooden box b. The items are packed in a met a l box c. The items are packed in a plastic box d. Items are packed in a carton

10. Which of the following application domain does not generate Big Data a. Data generated from a social networking site like Facebook b. Data generated from the traffic c a meras from installed in a city c. Your online transactions in Amazon prime website d. Tracking the locations of all the moving vehicles from Uber’s control room

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NPTEL E-Business Week 2 Assignment Answers 2023

NPTEL E-Business Week 2 Assignment Solutions :- All the Answers provided below to help the students as a reference, You must submit your assignment at your own knowledge.

1. Which of the following is not a part of the Enterprise Resource Planning (ERP) system? a. Manufacturing and production b. Sales and marketing c. Warehouse management d. Finance and accounts

2. Three types of flows occur during the execution of a business process. Which one the following does not happen when you book an air ticket and receive it online. a. Money b. Material c. Information d. None

3. Data scientists belong to _____level of management, whereas data workers belong to_______level . a. Middle, operational b. Senior, middle c. Senior, operational d. Operational, middle

4. Which of the following entities is a stakeholder of a company? a. Supplier b. Customer c. Government d. All of the above

5. What is information? a. data that are processed to be useful b. data that has been given meaning by establishing relational connection c. provides answers to “who”, “what”, “where”, and “when” questions d. All of the above

6. Which one of the below is not a resource for an information system? a. People b. Data c. Building infras tr ucture d. Hardware and software

7. Which of the following types of the information system is responsible for capturing various data generated during operational activities of the organization. a. TPS b. MIS c. DSS d. All of the above

8. Determining special offers to customers is a decision taken by ________. a. Senior Management b. Operational Management c. Middle Management d. None of the above

9. An academic ERP system prepares a grade sheet for the individual students at the end of the semester based on the grades entered by professors. Grade sheet generation is activity, whereas grade entry is activity. a. IPS, DSS b. DSS. MIS c. IPS, MIS d. MIS. IPS

10. Google map provides you the shortest yet less crowded path using a variation of Dijkstra’s shortest path algorithm. It is an example of _________. a. MIS b. TPS c. ESS d. DSS

11. Which of the following is not a knowledge representation method in expert systems a. Hardware based b. Case based c. Obiect based d. Rule based

12. Analyzing clickstream data for customer behavior modeling is a ________ decision support scenario a. Analytical b. Mathematical c. Event drive n d. Data driven

13. The quality characteristics of an information system for providing up-to-date whenever accesses, is termed as a. Currency b. Timeliness c. Frequency d. Reliability

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Reminder- NPTEL: Exam Registration is open now for July 2024 courses!

Dear Candidate,

Here is a golden opportunity for those who had previously enrolled in this course during the Jan 2024 semester, but could not participate in the exams or were absent/did not pass the exam for this course. This course is being reoffered in July 2024 and we are giving you another chance to write the exam in October 26, 2024 a nd obtain a certificate based on NPTEL norms. Do not let go of this unique opportunity to earn a certificate from the IITs/IISc.

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NPTEL: Exam Registration is open now for July 2024 courses!

Thank you for learning with nptel.

Dear Learner, Thank you for taking the course with NPTEL!! Hope you enjoyed the journey with us. The results for this course have been published and we are closing this course now.  You will still have access to the contents and assignments of this course, if you click on the course name from the "Mycourses" tab on swayam.gov.in. For any further queries please write to [email protected] . - Team NPTEL

E-Business : Result Published!!

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E-Business - Assignments - 12 Solution Released

Dear Participants, The Solutions of  Assignments - 12 of Week - 12  respectively for the course " E-Business " has been released in the portal. Please go through the solution and in case of any doubt post your queries in the forum. Week 12 Solution:  https://drive.google.com/file/d/160_gaRpf44mKztD1jwlCam7rSLuFhrWl/view?usp=sharing Happy Learning! Thanks & Regards, NPTEL Team

April 2024 NPTEL Exams - Hall Tickets Released!

E-Business - Assignments - 11 Solution Released

Dear Participants, The Solutions of  Assignments - 11 of Week - 11  respectively for the course " E-Business " has been released in the portal. Please go through the solution and in case of any doubt post your queries in the forum. Week 11 Solution:  https://drive.google.com/file/d/1rJTpuDoKCU1e0Q9fTWc1sg_Z3eQgeYcL/view?usp=drive_link Happy Learning! Thanks & Regards, NPTEL Team

Exam Format - April, 2024!!

Dear Candidate, ****This is applicable only for the exam registered candidates**** Type of exam will be available in the list: Click Here You will have to appear at the allotted exam center and produce your Hall ticket and Government Photo Identification Card (Example: Driving License, Passport, PAN card, Voter ID, Aadhaar-ID with your Name, date of birth, photograph and signature) for verification and take the exam in person.  You can find the final allotted exam center details in the hall ticket. The hall ticket is yet to be released.  We will notify the same through email and SMS. Type of exam: Computer based exam (Please check in the above list corresponding to your course name) The questions will be on the computer and the answers will have to be entered on the computer; type of questions may include multiple choice questions, fill in the blanks, essay-type answers, etc. Type of exam: Paper and pen Exam  (Please check in the above list corresponding to your course name) The questions will be on the computer. You will have to write your answers on sheets of paper and submit the answer sheets. Papers will be sent to the faculty for evaluation. On-Screen Calculator Demo Link: Kindly use the below link to get an idea of how the On-screen calculator will work during the exam. https://tcsion.com/ OnlineAssessment/ ScientificCalculator/ Calculator.html NOTE: Physical calculators are not allowed inside the exam hall. Thank you! -NPTEL Team

E-Business - Week 12 content is live now!!

Dear Students

The lecture videos for Week 12 have been uploaded for the course E-Business . The lectures can be accessed using the following link: https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=133&lesson=134

The other lectures of this week are accessible from the navigation bar to the left. Please remember to login into the website to view contents (if you aren't logged in already).

Assignment 12 for Week 12 is also released and can be accessed from the following link:  https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=133&assessment=233

The assignment has to be submitted on or before Wednesday, [17/04/2024] , 23:59 IST.

As we have done so far, please use the discussion forums if you have any questions on this module.

Note : Please check the due date of the assignments in the announcement and assignment page if you see any mismatch write to us immediately.

Thanks and Regards,

--NPTEL Team

E-Business - Week 12 Feedback Form

Dear Learners,

Thank you for enrolling in this NPTEL course and we hope you have gone through the contents for this week and also attempted the assignment.

We value your feedback and wish to know how you found the videos and the questions asked - whether they were easy, difficult, as per your expectations, etc

We shall use this to make the course better and we can also know from the feedback which concepts need more explanation, etc.

Please do spare some time to give your feedback - comprises just 5 questions - should not take more than a minute, but makes a lot of difference for us as we know what the Learners feel.

Here is the link to the form: https://docs.google.com/forms/d/1UFLoRLJVOkqmzAXcBVlzywndEK6OdkWs5Fv6bOetVVg/viewform

E-Business - Assignments - 10 Solution Released

Dear Participants, The Solutions of  Assignments - 10 of Week - 10  respectively for the course " E-Business " has been released in the portal. Please go through the solution and in case of any doubt post your queries in the forum. Week 10 Solution:  https://drive.google.com/file/d/1VgQTv0bSFhyswrqrtfIwldBhqUfKUoNC/view?usp=drive_link Happy Learning! Thanks & Regards, NPTEL Team

E-Business : Live Interactive session - 3

Dear Learner,

The Course Instructor of "E-Business ," by Prof. Mamata Jenamani (IIT Kharagpur), will be available in a live session on YouTube on the date and time mentioned below. You will have the opportunity to interact with the faculty and ask questions by posting in the YouTube live chat box.

Date: 9/04/2023

Time: 16:00 Hrs. IST

Link for YouTube live session : https://youtube.com/live/ICw9raUcrag?feature=share

Feel free to submit your queries ahead of the live session by clicking on the provided link. The faculty will address your questions during the live session : https://docs.google.com/forms/d/e/1FAIpQLSeGgjleV8yeCNXOuFmMnAQ2lYZx3xgUISI8vFsqamDUSXf_JA/viewform

**We would also like to hear from you after the session, therefore we request you to please share your thoughts in the forum. Learners are encouraged to visit bit.ly/NPTELLIVE for updates regarding live sessions.

-NPTEL Team

E-Business - Week 11 Feedback Form

E-business - assignments - 9 solution released.

Dear Participants, The Solutions of  Assignments - 9 of Week - 9  respectively for the course " E-Business " has been released in the portal. Please go through the solution and in case of any doubt post your queries in the forum. Week 9 Solution:  https://drive.google.com/file/d/1W7au8Z3w-6Bk036JiUw-Tu07orWHEEpr/view?usp=drive_link Happy Learning! Thanks & Regards, NPTEL Team

E-Business - Week 11 content is live now!!

The lecture videos for Week 11 have been uploaded for the course E-Business . The lectures can be accessed using the following link: https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=124&lesson=125

Assignment 11 for Week 11 is also released and can be accessed from the following link:  https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=124&assessment=232

The assignment has to be submitted on or before Wednesday, [10/04/2024] , 23:59 IST.

Important Notice:No CHANGE in NPTEL Exam Schedule for April 2024

Dear Student,

We wanted to take a moment to address an important matter regarding the upcoming election dates and their potential impact on your exam schedule.

• None of the election dates clash with scheduled exam dates. If we schedule additional dates, we will ensure they again do not clash with elections in your state. 
• Hence this is to confirm that there will be no changes to the exam dates and they are the same as previously scheduled. We may have exams in some cities on April 19 and April 26 depending on seat availability on scheduled dates. But again this will be done ensuring we don't conduct exams on election dates in your state. 
• Your academic progress and success remain our top priority, and we are committed to maintaining the integrity of the examination process.
• We have more than 6 lakh learners registered for April exams and logistics has been a huge challenge. We understand that some of you may need to travel to your native cities to participate in the voting process. Please remember that you selected your exam cities during registration, and it is crucial that you return to these cities to take your exams as scheduled. Since hall ticket and center allocation is under process, exam cities selected by you during exam registration cannot be changed now. 

Hence we kindly request that you make the necessary arrangements to ensure you can both exercise your right to vote and fulfill your academic obligations.

Warm Regards,

NPTEL Team.

E-Business - Week 10 content is live now!!

The lecture videos for Week 10 have been uploaded for the course E-Business . The lectures can be accessed using the following link: https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=115&lesson=116

Assignment 10 for Week 10 is also released and can be accessed from the following link:  https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=115&assessment=231

The assignment has to be submitted on or before Wednesday, [3/04/2024] , 23:59 IST.

E-Business - Week 10 Feedback Form

E-business - assignments - 8 solution released.

Dear Participants, The Solutions of  Assignments - 8 of Week - 8  respectively for the course " E-Business " has been released in the portal. Please go through the solution and in case of any doubt post your queries in the forum. Week 8 Solution:  https://drive.google.com/file/d/1HGxWwG3LEcs9O1ytSdCpRi6GrEqjJvvi/view Happy Learning! Thanks & Regards, NPTEL Team

E-Business : Live Interactive session - 2

Date: 18/03/2023

Link for YouTube live session : https://youtube.com/live/gPqVcQgu5Ko?feature=share

Feel free to submit your queries ahead of the live session by clicking on the provided link. The faculty will address your questions during the live session : https://docs.google.com/forms/d/e/1FAIpQLSc7LvZfUBOtDq9Rvte4Xa7YFxufoNdExy7onxogC8a0lHsnHA/viewform

E-Business - Assignments - 7 Solution Released

Dear Participants, The Solutions of  Assignments - 7 of Weeks - 7  respectively for the course " E-Business " has been released in the portal. Please go through the solution and in case of any doubt post your queries in the forum. Week 6 Solution:  https://drive.google.com/file/d/1hAx9fkeTpdavNhE8lAJFkk1dJR4cTriW/view?usp=sharing Happy Learning! Thanks & Regards, NPTEL Team

E-Business - Week 9 content is live now!!

The lecture videos for Week 9 have been uploaded for the course E-Business . The lectures can be accessed using the following link: https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=105&lesson=106

Assignment 9 for Week 9 is also released and can be accessed from the following link:  https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=105&assessment=229

The assignment has to be submitted on or before Wednesday, [27/03/2024] , 23:59 IST.

E-Business - Week 9 Feedback Form

E-business - assignments - 6 solution released.

Dear Participants, The Solutions of  Assignments - 6 of Weeks - 6  respectively for the course " E-Business " has been released in the portal. Please go through the solution and in case of any doubt post your queries in the forum. Week 6 Solution:  https://drive.google.com/file/d/1FezcgvSWfAHmk0q5NpafBfawRQuxA5Zq/view?usp=sharing Happy Learning! Thanks & Regards, NPTEL Team

E-Business - Week 8 Feedback Form

E-business - week 8 content is live now.

The lecture videos for Week 8 have been uploaded for the course E-Business . The lectures can be accessed using the following link: https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=93&lesson=94

Assignment 8 for Week 8 is also released and can be accessed from the following link:  https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=93&assessment=228

The assignment has to be submitted on or before Wednesday, [20/03/2024] , 23:59 IST.

E-Business - Week 7 Feedback Form

E-business - week 7 content is live now.

The lecture videos for Week 7 have been uploaded for the course E-Business . The lectures can be accessed using the following link: https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=82&lesson=83

Assignment 7 for Week 7 is also released and can be accessed from the following link:  https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=82&assessment=225

The assignment has to be submitted on or before Wednesday, [13/03/2024] , 23:59 IST.

E-Business - Assignments - 5 Solution Released

Dear Participants, The Solutions of  Assignments - 5 of Weeks - 5  respectively for the course " E-Business " has been released in the portal. Please go through the solution and in case of any doubt post your queries in the forum. Week 5 Solution:  https://drive.google.com/file/d/1sdg37Ot26XwKWnTgyIJlQrGNw82JQzEn/view?usp=sharing Happy Learning! Thanks & Regards, NPTEL Team

E-Business - Week 6 Feedback Form

E-business - assignments-4 solution released.

Dear Participants, The Solutions of  Assignments - 4 of Weeks - 4  respectively for the course "E-Business" has been released in the portal. Please go through the solution and in case of any doubt post your queries in the forum. Week 4 Solution:  https://drive.google.com/file/d/1ilsX8dEsqkYVu-Q_CqF4lMqPOcVsSxT2/view?usp=sharing Happy Learning! Thanks & Regards, NPTEL Team

NPTEL: Exam Registration date is extended for 12 week courses of Jan 2024!

• No further extension will be provided.
• This extension is only applicable for 12-week courses.

E-Business - Week 6 content is live now!!

The lecture videos for Week 6 have been uploaded for the course E-Business . The lectures can be accessed using the following link: https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=71&lesson=72

Assignment 6 for Week 6 is also released and can be accessed from the following link:  https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=71&assessment=224

The assignment has to be submitted on or before Wednesday, [06/03/2024] , 23:59 IST.

Reminder: NPTEL: Exam Registration is date is extended for Jan 2024 courses!

Dear Learner,  The exam registration for the Jan 2024 NPTEL course certification exam is extended till February 23, 2024 - 05.00 P.M . CLICK HERE to register for the exam Choose from the Cities where exam will be conducted: Exam Cities Click here to view Timeline and Guideline : Guideline For further details on registration process please refer the previous announcement in the course page. -NPTEL Team

E-Business : Live Interactive session - 1

Date: 22/02/2023

Link for YouTube live session : https://youtube.com/live/M445Yel1sBk?feature=share

Feel free to submit your queries ahead of the live session by clicking on the provided link. The faculty will address your questions during the live session : https://docs.google.com/forms/d/e/1FAIpQLSd5CM1xBHnlRncPVZlO8aIuI1Nqbzl9L1FU4VJimdN5cdZoww/viewform

E-Business - Assignments-3 Solution Released

Dear Participants, The Solutions of  Assignments - 3 of Weeks - 3  respectively for the course "E-Business" has been released in the portal. Please go through the solution and in case of any doubt post your queries in the forum. Week 3 Solution:  https://drive.google.com/file/d/1yJuy6b1qrMPrhiGqJyBzXIzTfdNXankz/view?usp=sharing Happy Learning! Thanks & Regards, NPTEL Team

E-Business - Week 5 Feedback Form

E-business - week 5 content is live now.

The lecture videos for Week 5 have been uploaded for the course E-Business . The lectures can be accessed using the following link: https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=60&lesson=61

Assignment 5 for Week 5 is also released and can be accessed from the following link:  https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=60&assessment=223

The assignment has to be submitted on or before Wednesday, [28/02/2024] , 23:59 IST.

Dear Learner,  The exam registration for the Jan 2024 NPTEL course certification exam is extended till February 20, 2024 - 05.00 P.M . CLICK HERE to register for the exam Choose from the Cities where exam will be conducted: Exam Cities Click here to view Timeline and Guideline : Guideline For further details on registration process please refer the previous announcement in the course page. -NPTEL Team

E-Business - Week 4 Feedback Form

E-business - week 4 content is live now.

The lecture videos for Week 4 have been uploaded for the course E-Business . The lectures can be accessed using the following link: https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=48&lesson=49

Assignment 4 for Week 4 is also released and can be accessed from the following link:  https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=48&assessment=222

The assignment has to be submitted on or before Wednesday, [21/02/2024] , 23:59 IST.

E-Business - Assignments-1 and 2 Solution Released

Dear Participants, The Solutions of Assignments - 1 and 2 of Weeks - 1 and 2 respectively for the course "E-Business" has been released in the portal. Please go through the solution and in case of any doubt post your queries in the forum. Week 1 Solution:  https://drive.google.com/file/d/16DEln159Q9GuA5Fl7btBcb3NT3Ev-bxT/view Week 2 Solution:  https://drive.google.com/file/d/175szKgeJhELqG1D1Ppjwk5AD9wFwbjG0/view?usp=sharing Happy Learning! Thanks & Regards, NPTEL Team

E-Business - Week 3 content is live now!!

The lecture videos for Week 3 have been uploaded for the course E-Business . The lectures can be accessed using the following link: https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=38&lesson=39

Assignment 3 for Week 3 is also released and can be accessed from the following link:  https://onlinecourses.nptel.ac.in/noc24_mg16/unit?unit=38&assessment=221

The assignment has to be submitted on or before Wednesday, [14/02/2024] , 23:59 IST.

E-Business - Week 3 Feedback Form

E-business - assignment-0 solution released.

Dear Participants,

The Assignment - 0 of Week - 0 Solution for the course " E-Business " has been released in the portal. Please go through the solution and in case of any doubt post your queries in the forum.

Link: https://drive.google.com/file/d/1pdT6j4bW36a5B5u27vRktdvK0LlFL9Te/view

Happy Learning!

Thanks & Regards,

Reminder: NPTEL: Exam Registration is open now for Jan 2024 courses!

Dear Learner, 

Here is the much-awaited announcement on registering for the Jan 2024 NPTEL course certification exam. 

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E-Business - Week 2 Feedback Form

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The assignment has to be submitted on or before Wednesday, [07/02/2024] , 23:59 IST.

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NPTEL E-Business Assignment 7 Answers 2022

• by QuizXp Team
• March 16, 2022 March 16, 2022

Are you looking for the Answers to NPTEL E-Business Assignment 7? This article will help you with the answer to the  Nation al Programme on Technology Enhanced Learning  ( NPTEL )  Course “ NPTEL E-Business Assignment 7″

What is E-Business?

The Internet has changed the way companies carry out their businesses. The primary objective of this course is to introduce concepts, tools and approaches to electronic business to the post- graduate and undergraduate students. Further, the subject will help the students to develop skills to manage businesses in the digital world.

CRITERIA TO GET A CERTIFICATE

Average assignment score = 25% of the average of best 8 assignments out of the total 12 assignments given in the course. Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF THE AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Below you can find the answers for the NPTEL E-Business Assignment 7

NPTEL E-Business Assignment 7 Answers:-

Q1. Every payment system has four components: Instruments, Rules, Institutions, and Legal systems. In Indian payment system which of the following is an example of Instrument

Q2. EDI for Administration, Commerce, and Trade (EDIFACT) standard is used in …………

Q3. In which cloud service model, a vendor provides users access to a specific operating system such as Linux or Windows?

Q4. Which of the following is the right sequence for data interchange using EDI?

Next Week Assignment Answers

Q5. Which of the following is TRUE regarding REpresentational State Transfer (REST) Web Services?

Q6. In B2B Interoperability, which technical layer resolves semantic and structural heterogeneity issues?

Q7. Which of the following can be considered as a private cloud?

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Q8. Both XML and EDI can be used for B2B content level interoperability. Which of these two technologies is older?

Q9. Value added networks (VAN) are used in EDI when the communication is

Q10. Which of the following assessment criteria is required for any electronic payment system?

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[week 1-12] nptel e-business assignment answers 2024.

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Introduction To Machine Learning Week 1 Nptel Answers 2024

Are you looking for the NPTEL Introduction to Machine Learning Week 1 Assignment Answers 2024 (July-Dec)? You’re in the right place! Our detailed solutions cover essential machine learning concepts such as supervised learning, unsupervised learning, and key algorithms like linear regression and k-nearest neighbors.

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Table of Contents

Introduction To Machine Learning Week 1 Nptel Answers (July-Dec 2024)

Q1 . Which of the following are supervised learning problems (Multiple Correct)? Clustering Spotify users based on their listening history Weather forecast using data collected by a satellite Predicting tuberculosis using patient’s chest X-Ray Training a humanoid to walk using a reward system

Answer: Weather forecast using data collected by a satellite Predicting tuberculosis using patient’s chest X-Ray

Q2. Which of the following are regression tasks (Multiple Correct)? Predicting the outcome of an election Predicting the weight of a giraffe based on its weight Predicting the emotion conveyed by a sentence Identifying abnormal data points

Answer: Predicting the weight of a giraffe based on its weight

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These are Introduction To Machine Learning Week 1 Nptel Assignment Answers

Q3.Which of the following are classification tasks (Multiple Correct)? Predicting the outcome of an election Predicting the weight of a giraffe based on its weight Predicting the emotion conveyed by a sentence Identifying abnormal data points

Answer:a) Predicting the outcome of an election , c)Predicting the emotion conveyed by a sentence d)Identifying abnormal data points

Q4. Which of the two functions overfit the training data? Both functions F1 & F2 Function F1 Function F2 None of them

Answer: Function F1

Q5. Which of the following 2 functions will yield higher training error? Function F1 Function F2 Both functions F1 & F2 will have the same training error Can not be determined

Answer: Function F2

Q6. What does the term ‘policy’ refer to in reinforcement learning? A set of rules governing the environment The reward function The initial state of the environment The strategy the agent follows to choose actions

Answer: The strategy the agent follows to choose actions

Q7. Given the following dataset, for k = 3, use KNN regression to find the prediction for a new data-point (2,3) (Use Euclidean distance measure for finding closest points)

2.0 2.6 2.8 3.2

Q8.For any given dataset, comment on the bias of K-nearest classifiers upon increasing the value of K The bias of the classifier decreases The bias of the classifier does not change The bias of the classifier increases Can not be determined

Answer: The bias of the classifier does not change

Q9. Bias and variance are given by: E[f^(x)]−f(x),E[(E[f^(x)]−f^(x))2] E[f^(x)]−f(x),E[(E[f^(x)]−f^(x))]2 (E[f^(x)]−f(x))2,E[(E[f^(x)]−f^(x))2] (E[f^(x)]−f(x))2,E[(E[f^(x)]−f^(x))]2

Q10.Which of the following statements are FALSE regarding bias and variance? Models which overfit have a high bias Models which overfit have a low bias Models which underfit have a high variance Models which underfit have a low variance

Answer: a) Models which overfit have a high bias , c)Models which underfit have a high variance

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Introduction To Machine Learning Week 1 Nptel Answers (JAN-APR 2024)

Course name: Introduction to Machine Learning

Q1. Which of the following is/are unsupervised learning problem(s)? Grouping documents into different categories based on their topics Forecasting the hourly temperature in a city based on historical temperature patterns Identifying close-knit communities of people in a social network Training an autonomous agent to drive a vehicle Identifying different species of animals from images

Answer: A, C Grouping documents into different categories based on their topics Identifying close-knit communities of people in a social network

Q2. Which of the following statement(s) about Reinforcement Learning (RL) is/are true? While learning a policy, the goal is to maximize the long-term reward. During training, the agent is explicitly provided the most optimal action to be taken in each state. The state of the environment changes based on the action taken by the agent. RL is used for building agents to play chess. RL is used for predicting the prices of apartments from their features.

Answer: A, C, D While learning a policy, the goal is to maximize the long-term reward. The state of the environment changes based on the action taken by the agent. RL is used for building agents to play chess.

Q3. Which of the following is/are classification tasks(s)? Predicting whether an email is spam or not spam Predicting the number of COVID cases over a given period Predicting the score of a cricket team Identifying the language of a text document

Answer: A, D Predicting whether an email is spam or not spam Identifying the language of a text document

Q4. Which of the following is/are regression task(s)? Predicting whether or not a customer will repay a loan based on their credit history Forecasting the amount of rainfall in a given place Identifying the types of crops from aerial images of farms Predicting the future price of a stock

Answer: B, D Forecasting the amount of rainfall in a given place Predicting the future price of a stock

Q5. Consider the following dataset. Fit a linear regression model of the form y=β0+β1×1+β2×2 using the mean-squared error loss. Using this model, the predicted value of y at the point (x1,x2)=(0.5,−1.0) is −0.651 −0.737 0.245 −0.872

Answer: −0.737

Q6. Consider the following dataset. Using a k-nearest neighbour (k-NN) regression model with k=3, predict the value of y at (x1,x2)=(0.5,−1.0). Use the Euclidean distance to find the nearest neighbours. −1.762 −2.061 −1.930 −1.529

Answer: −1.930

Q7. Consider the following statements regarding linear regression and k-NN regression models. Select the true statements. A linear regressor requires the training data points during inference. A k-NN regressor requires the training data points during inference. A k-NN regressor with a higher value of k is less prone to overfitting. A linear regressor partitions the input space into multiple regions such that the prediction over a given region is constant.

Answer: B, C A k-NN regressor requires the training data points during inference. A k-NN regressor with a higher value of k is less prone to overfitting.

Q8. Consider a binary classification problem where we are given certain measurements from a blood test and need to predict whether the patient does not have a particular disease (class 0) or has the disease (class 1). In this problem, false negatives (incorrectly predicting that the patient is healthy) have more serious consequences as compared to false positives (incorrectly predicting that the patient has the disease). Which of the following is an appropriate cost matrix for this classification problem? The row denotes the true class and the column denotes the predicted class. [0 0 100 0] [0 1 100 0] [0 1 1 0] [0 100 1 0] [0 100 0 0]

Answer: D. [0 1 100 0]

Q9. Consider the following dataset with three classes: 0, 1 and 2. x1 and x2 are the independent variables whereas y is the class label. Using a k-NN classifier with k = 3, predict the class label at the point (x1,x2)=(0.7,−0.8). Use the Euclidean distance to find the nearest neighbours. 0 1 2 Cannot be predicted

Q10. Suppose that we train two kinds of regression models corresponding to the following equations. (i) y=β0+β1×1+β2×2 (ii) y=β0+β1×1+β2×2+β3x1x2 Which of the following statement(s) is/are correct? On a given training dataset, the mean-squared error of (i) is always greater than or equal to that of (ii). (i) is likely to have a higher variance than (ii). (ii) is likely to have a higher variance than (i). If (ii) overfits the data, then (i) will definitely overfit. If (ii) underfits the data, then (i) will definitely underfit.

Answer: A, C, E On a given training dataset, the mean-squared error of (i) is always greater than or equal to that of (ii). (ii) is likely to have a higher variance than (i). If (ii) underfits the data, then (i) will definitely underfit.

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Introduction To Machine Learning Week 1 Nptel Answers (JULY-DEC 2023)

Q1. Which of the following is a supervised learning problem? Grouping related documents from an unannotated corpus. Predicting credit approval based on historical data. Predicting if a new image has cat or dog based on the historical data of other images of cats and dogs, where you are supplied the information about which image is cat or dog. Fingerprint recognition of a particular person used in biometric attendance from the fingerprint data of various other people and that particular person.

Answer: B, C, D

Q2. Which of the following are classification problems? Predict the runs a cricketer will score in a particular match. Predict which team will win a tournament. Predict whether it will rain today. Predict your mood tomorrow.

Q3. Which of the following is a regression task? Predicting the monthly sales of a cloth store in rupees. Predicting if a user would like to listen to a newly released song or not based on historical data. Predicting the confirmation probability (in fraction) of your train ticket whose current status is waiting list based on historical data. Predicting if a patient has diabetes or not based on historical medical records. Predicting if a customer is satisfied or unsatisfied from the product purchased from ecommerce website using the the reviews he/she wrote for the purchased product.

Answer: A, C

Q4. Which of the following is an unsupervised learning task? Group audio files based on language of the speakers. Group applicants to a university based on their nationality. Predict a student’s performance in the final exams. Predict the trajectory of a meteorite.

Answer: A, B

Q5. Which of the following is a categorical feature? Number of rooms in a hostel. Gender of a person Your weekly expenditure in rupees. Ethnicity of a person Area (in sq. centimeter) of your laptop screen. The color of the curtains in your room. Number of legs an animal. Minimum RAM requirement (in GB) of a system to play a game like FIFA, DOTA.

Answer: B, D, F

Q6. Which of the following is a reinforcement learning task? Learning to drive a cycle Learning to predict stock prices Learning to play chess Leaning to predict spam labels for e-mails

Q7. Let X and Y be a uniformly distributed random variable over the interval [0,4] and [0,6] respectively. If X and Y are independent events, then compute the probability, P(max(X,Y)>3) 1/6 5/6 2/3 1/2 2/6 5/8 None of the above

Answer: 5/8

Q8. Find the mean of 0-1 loss for the given predictions: 1 0 1.5 0.5

Answer: 0.5

Q9. Which of the following statements are true? Check all that apply. A model with more parameters is more prone to overfitting and typically has higher variance. If a learning algorithm is suffering from high bias, only adding more training examples may not improve the test error significantly. When debugging learning algorithms, it is useful to plot a learning curve to understand if there is a high bias or high variance problem. If a neural network has much lower training error than test error, then adding more layers will help bring the test error down because we can fit the test set better.

Answer: A, B, C

Q10. Bias and variance are given by: E[f^(x)]−f(x),E[(E[f^(x)]−f^(x))2] E[f^(x)]−f(x),E[(E[f^(x)]−f^(x))]2 (E[f^(x)]−f(x))2,E[(E[f^(x)]−f^(x))2] (E[f^(x)]−f(x))2,E[(E[f^(x)]−f^(x))]2

Answer: E[f^(x)]−f(x),E[(E[f^(x)]−f^(x))2]

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Introduction To Machine Learning Week 1 Nptel Answers (JAN-APR 2023)

Course Name: Introduction to Machine Learning

Q1) Which of the following is a supervised learning problem? a. Grouping related documents from an unannotated corpus. b. Predicting credit approval based on historical data c. Predicting rainfall based on historical data d. Predicting if a customer is going to return or keep a particular product he/she purchased from e-commerce website based on the historical data about the customer purchases and the particular product. e. Fingerprint recognition of a particular person used in biometric attendance from the fingerprint data of various other people and that particular person

Answer: b, c, d, e

Q2) Which of the following is not a classification problem? a. Predicting the temperature (in Celsius) of a room from other environmental features (such as atmospheric pressure, humidity etc). b. Predicting if a cricket player is a batsman or bowler given his playing records. c. Predicting the price of house (in INR) based on the data consisting prices of other house (in INR) and its features such as area, number of rooms, location etc. d. Filtering of spam messages e. Predicting the weather for tomorrow as “hot”, “cold”, or “rainy” based on the historical data wind speed, humidity, temperature, and precipitation.

Answer: a, c

Q3) Which of the following is a regression task? (multiple options may be correct) a. Predicting the monthly sales of a cloth store in rupees. b. Predicting if a user would like to listen to a newly released song or not based on historical data. c. Predicting the confirmation probability (in fraction) of your train ticket whose current status is waiting list based on historical data. d. Predicting if a patient has diabetes or not based on historical medical records. e. Predicting if a customer is satisfied or unsatisfied from the product purchased from e-commerce website using the the reviews he/she wrote for the purchased product.

Q4) Which of the following is an unsupervised task? a. Predicting if a new edible item is sweet or spicy based on the information of the ingredients, their quantities, and labels (sweet or spicy) for many other similar dishes. b. Grouping related documents from an unannotated corpus. c. Grouping of hand-written digits from their image. d. Predicting the time (in days) a PhD student will take to complete his/her thesis to earn a degree based on the historical data such as qualifications, department, institute, research area, and time taken by other scholars to earn the degree. e. all of the above

Answer: b, c

Q5) Which of the following is a categorical feature? a. Number of rooms in a hostel. b. Minimum RAM requirement (in GB) of a system to play a game like FIFA, DOTA. c. Your weekly expenditure in rupees. d. Ethnicity of a person e. Area (in sq. centimeter) of your laptop screen. f. The color of the curtains in your room.

Answer: d, f

Q6) Let X and Y be a uniformly distributed random variable over the interval [0, 4] and [0, 6] respectively. If X and Y are independent events, then compute the probability, P(max(X,Y)>3) a. 1/6 b. 5/6 c. 2/3 d. 1/2 e. 2/6 f. 5/8 g. None of the above

Answer: f. 5/8

Q7) Let the trace and determinant of a matrix A[acbd] be 6 and 16 respectively. The eigenvalues of A are a. 3+i√7/2,3−i√7/√2, where √=√−1 b. 1,3 c. 3+i√7/4,3−√7/4, where i=√−1 d. 1/2,3/2 e. 3+i√7,3−i√7, where i=√−1 f. 2,8 g. None of the above h. Can be computed only if A is a symmetric matrix. i. Can be computed only if A is a symmetric matrix. j. Can not be computed as the entries of the matrix A are not given.

Answer: e. 3+i√7,3−i√7, where i=√−1

Q8) What happens when your model complexity increases? (multiple options may be correct) a. Model Bias decreases b. Model Bias increases c. Variance of the model decreases d. Variance of the model increases

Answer: a, d

Q9) A new phone, E-Corp X1 has been announced and it is what you’ve been waiting for, all along. You decide to read the reviews before buying it. From past experiences, you’ve figured out that good reviews mean that the product is good 90% of the time and bad reviews mean that it is bad 70% of the time. Upon glancing through the reviews section, you find out that the X1 has been reviewed 1269 times and only 172 of them were bad reviews. What is the probability that, if you order the X1, it is a bad phone? a. 0.136 b. 0.160 c. 0.360 d. 0.840 e. 0.773 f. 0.573 g. 0.181

Answer: g. 0.181

Q10) Which of the following are false about bias and variance of overfitted and underfitted models? (multiple options may be correct) a. Underfitted models have high bias. b. Underfitted models have low bias. c. Overfitted models have low variance. d. Overfitted models have high variance.

Introduction To Machine Learning Week 1 Nptel Answers (JUL-DEC 2022)

• Which of the following are supervised learning problems? (multiple may be correct)

a. Learning to drive using a reward signal. b. Predicting disease from blood sample. c. Grouping students in the same class based on similar features. d. Face recognition to unlock your phone.

Answer: b, d

• Which of the following are classification problems? (multiple may be correct)

a. Predict the runs a cricketer will score in a particular match. b. Predict which team will win a tournament. c. Predict whether it will rain today. d. Predict your mood tomorrow.

• Which of the following is a regression task? (multiple options may be correct)

a. Predict the price of a house 10 years after it is constructed. b. Predict if a house will be standing 50 years after it is constructed. c. Predict the weight of food wasted in a restaurant during next month. d. Predict the sales of a new Apple product.

Answer: a, c , d

• Which of the following is an unsupervised learning task? (multiple options may be correct)

a. Group audio files based on language of the speakers. b. Group applicants to a university based on their nationality. c. Predict a student’s performance in the final exams. d. Predict the trajectory of a meteorite.

Answer: a, b

• Given below is your dataset. You are using KNN regression with K=3. What is the prediction for a new input value (3, 2)?

Answer: 2.50

• Which of the following is a reinforcement learning task? (multiple options may be correct)

Answer: a, b , c

These are Introduction to Machine Learning Week 1 Assignment 1 Answers

• Find the mean of squared error for the given predictions:
• Find the mean of 0-1 loss for the given predictions:
• Bias and variance are given by:
• Which of the following are true about bias and variance? (multiple options may be correct)

Answer: b ,d