Welcome to the Wiki of the course '''Information Retrieval''' in the winter term 2015/2016

The course is given by Prof. Dr. Hannah Bast and assisted by Elmar Haußmann (stand-in for the first three weeks: Björn Buchhold). It takes place every Tuesday from 4:15pm until 5:45pm in the seminar room SR 01-009/013 in building 101. The first lecture is on Tuesday, October 20, 2015 and the last lecture is on Tuesday, February 9, 2016. There will be no lecture on Tuesday, December 29, 2015 and Tuesday, January 5, 2016 (christmas break) and on [TODO: some other day which is yet to be selected]. That is 14 lectures altogether.

The tutors for this course are Simon Weidner (weidnersimon@gmx.de), T₂, ..., T_k, where the T_i with i > 1 and the k are still to be determined. The administrator of the supporting systems (Daphne, SVN, Forum, Jenkins) is Axel Lehmann.

Important Links

• Here is the link to Daphne (our course management system, login with your RZ user name and password).

• Here is the link to the Forum (for announcements and questions, you are automatically a member when you have logged into Daphne).

• Code style profiles for Eclipse: Java, C++.

• Short introductions to SVN and Vim and the installation of gtest (for C++ only) can be found here (in German).

• The topics of this course will be similar (but not identical) to those of the courses Information Retrieval WS 2012/2013 and Information Retrieval WS 2013/2014.

• Here is information about the exams from previous years: WS 12/13, WS 13/14.

Lecture Slides, Video Recordings, Exercise Sheets, and Code

• Lecture 1, Tuesday, October 20, 2015 (Introduction, Inverted Index, Zipf's Law): Video Recording (Download), Slides, Exercise Sheet 1, Code from the lecture + TIP file, Dataset for ES1 (189,898 movies, title + description), Solutions for Sheet 1.

• Lecture 2, Tuesday, October 27, 2015 (Ranking, Evaluation): Video Recording (Download), Slides, Exercise Sheet 2, TIP file, Dataset for ES2 (movies2.txt ... like movies.txt, but without annoying ^M or \r characters), Benchmark for ES2 (query <tab> ground-truth as line numbers in movies2.txt), Table for your ranking results, Solutions for Sheet 2.

• Lecture 3, Tuesday, November 3, 2015 (Efficient List Intersection): Video Recording (Download), Slides, Exercise Sheet 3, Code from the lecture + posting lists, Table for performance results.

• Lecture 4, Tuesday, November 10, 2015 (Compression, Codes, Entropy): Video Recording (Download), Slides, Exercise Sheet 4, Solutions for Sheet 4.

• Lecture 5, Tuesday, November 17, 2015 (Fuzzy Search, Edit Distance, q-Gram Index): Video Recording (Download), Slides, Exercise Sheet 5, Code from the lecture, including TIPs for Exercises 1 - 3, Dataset for ES5, Table for your q-gram results, Solutions for Sheet 5.

• Lecture 6, Tuesday, November 24, 2015 (How to build a web application): Video Recording (Download), Slides, Exercise Sheet 6, Code snippets from lecture, Dataset for ES6 (description of columns), Table with your web apps, Solutions for Sheet 6.

• Lecture 7, Tuesday, December 1, 2015 (Web App Vulnerabilities, Cookies, Unicode): Video Recording (Download), Slides, Exercise Sheet 7, Code snippets from lecture, Dataset for ES7, Table with your web apps.