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Recommender Systems

By Prof. Mamata Jenamani   |   IIT Kharagpur
Learners enrolled: 484   |  Exam registration: 90
ABOUT THE COURSE : Recommender Systems have been a prevalent area of research for a long time. They have been applied to various dimensions, ranging from marketing, education, social media, financial services, and more. Recommender systems have changed the way people find products, information, and even other people. Recommender systems discover information items (e.g., people, products) that are likely to be of interest to users. Such systems study patterns of behavior to know what someone will prefer from among a collection of things he has never experienced. At a high-level, recommendation systems are pieces of software equipped with data mining and machine learning tools that aim to recommend products or information to users, based on certain preferences. The proposed course aims to cover the following aspects of recommender system with a focus of developing such systems in Web based environment.
1. Theoretical foundations
2. Data preprocessing and preparation
3. Algorithms
4. Performance evaluation

INTENDED AUDIENCE : Students/Industry Participants

PREREQUISITES : At least pursuing BTech

INDUSTRY SUPPORT : Ecommerce Companies
Summary
Course Status : Completed
Course Type : Elective
Language for course content : English
Duration : 8 weeks
Category :
  • Multidisciplinary
Credit Points : 2
Level : Undergraduate/Postgraduate
Start Date : 19 Feb 2024
End Date : 12 Apr 2024
Enrollment Ends : 19 Feb 2024
Exam Registration Ends : 15 Mar 2024
Exam Date : 28 Apr 2024 IST

Note: This exam date is subject to change based on seat availability. You can check final exam date on your hall ticket.


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Course layout

Week 1: 
Introduction
Business value of Recommender System
A conceptual framework for understanding recommender system
Types of recommender system

Week 2: Data for recommendation: Explicit Vs Implicit data collection
Scales of measurement
Statistical and machine learning foundations for recommender system
Data preprocessing

Week 3: Introduction to collaborative filtering
Collaborative filtering approaches: Memory based and model based
Memory based collaborative filtering foundations: Distance and similarity measures
User based collaborative filtering; Item based collaborative filtering

Week 4: Model based collaborative filtering foundations: matrix factorization, UV decomposition, Singular value decomposition Model based collaborative filtering techniques: SVD, SVD++ etc

Week 5: Content based recommender system foundations
Examples with text data
Feature engineering: Feature extraction, feature selection, dimensionality reduction

Week 6: Content based recommender system examples with few supervised machine learning techniques

Week 7: Evaluation of recommender systems: Online and offline evaluation, metrics such as RMSE, AME, Good Item MAE, Good predicted item MAE, Precision, Recall, F1 Measure, NDCG, Average Reciprocal Rank, Top@N Measure.

Week 8: Overview of other types of recommender systems such as trust based, social network based, and context aware systems

Books and references

1. Ricci, F., Rokach, L. and Shapira, B., 2011. Introduction to recommender systems handbook. In Recommender systems handbook (pp. 1-35). Springer, Boston, MA.

2. Aggarwal, C.C., 2016. Recommender systems (Vol. 1). Cham: Springer International Publishing. Other reference materials will be used as and when necessary. It will be specified during course delivery.

Instructor bio

Prof. Mamata Jenamani

IIT Kharagpur
Prof. Mamata Jenamani, My broad area of Interest is E-Business. The specific focus areas include web data analytics and supply chain optimization in the context ICT applications. My interest in web data analytics started with my doctoral work where I modeled user behavior in a website and used it for personalization. During post-doctoral research at I worked in the area of online auctions. After joining in the department of Industrial and systems engineering at IIT, Kharagpur, I aligned my research with that of the department by contributing in the area of supply chain management along with my other interest areas. In summary, my past contributions include developing theories, corresponding implementation and experimental validating wherever possible in the area of 1) Models on human behavior in ecommerce site, 2) Decision support in auction and e-procurement, 3) Decision support in supply chain.Currently, I run a number of projects in the areas such as e-business in general, auction, ICT in supply chain and urban sustainability with a focus on e-governance. The prominent and most recent of them is E-Business Center of Excellence, sponsored by Ministry of Human Resource Development. Scholars in these projects are working on the topics such as website navigation redesign, evaluating the e-governance site quality, citizen opinion mining, optimal RFID equipment positioning, Multi-attribute reverse auction design, studies on RFID adoption and urban sustainability.My future work includes developing models for web data analysis. Design of recommender System, Web Log Analysis, User Generated Content analysis and Social Network Analysis are the four major pillars in this area. Another area that interests me is about developing models for data streams such as RFID data and sensor data. Both this data sources have become extremely important in tracking and tracing of the supply chain.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 28 April 2024 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.

CRITERIA TO GET A CERTIFICATE

Average assignment score = 25% of average of best 6 assignments out of the total 8 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 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.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Kharagpur .It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team


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