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Introduction to Web Science

Winter Term 2017 / 2018

News

No tutorial on Feb 2. Assignment 11 will be explained on Feb 9.

Assignments


Assignment	Due (@ 11:00 am)	Solution	Solution (Discussion)
Assignment 1, PDF	25.10.2017	Slides	27.10.2017
Assignment 2, PDF	01.11.2017	Solution	03.11.2017
Assignment 3, PDF	08.11.2017	Solution	10.11.2017
Assignment 4, PDF	17.11.2017	Solution	24.11.2017
Assignment 5, PDF	22.11.2017	Solution	24.11.2017
Assignment 6, PDF	29.11.2017	Solution	01.12.2017
Assignment 7, PDF	06.12.2017	Solution	08.12.2017
Extra Tutorial			15.12.2017
Assignment 8, PDF	20.12.2017	Solution	22.12.2017
Assignment 9, PDF	10.01.2018	Solution	12.01,2018
Assignment 10, PDF	17.01.2018	Solution	19.01.2018
Assignment 11, PDF	07.02.2018	Solution	09.02.2018

Schedule


Week	Dates	Topics
Week 1	23/10/2017	Ethernet	Communication over shared medium	Ethernet Header	Minimum Package Length vs. Cable Length	Collision Detection
	24/10/2017	Internet Protocol	Motivation for IP	Classful IPv4	IP forwarding algorithm	IP header
Week 2	30/10/2017	TCP	End to End Principle and Connection Oriented Communication	Threeway Handshake	Port Numbers	Sliding Window Protocol
	31/10/2017
Week 3	6/11/2017	DNS	Tree Structure	Terminology	Zones	Review facts about DNS	Delegating DNS Query	DNS Address Resolution
	7/11/2017	Internet vs WWW	Summary of Internet architecture	Motivation and requirment for WWW	Design Principles of WWW	Uniform Resource Identifier
		HTTP	Making HTTP Requests	A simple Web Client	HTTP Header	Content Negotiation
Week 4	13/11/2017	Web Content	Problem setting for web content formats	Working with XML	HTML for web document structures	Layout elements in HTML	Motivation for separation of content and layout	Cascading Style Sheets	Media Content	Meta Data
	14/11/2017	Dynamic Web Content	Basic Server side Web Programming	Forms and HTTP Post request	Handling a post request in Java Servlet	Client side Java Script	Ajax and XML HTTP Request
Week 5	20/11/2017	How big is the web	Problems with the question of the size of the web	3 ways to study the Web	A simplistic Descriptive Model	An unrealistic simplistic descriptive model
	21/11/2017	Descriptive Models	Counting words and Documents	Typical Length of the Document	How to formulate a research hypothesis	Number of words needed to understand Simple English Wikipedia	Linguistis way of checking simplicity of Text
Week 6	27/11/2017	Advanced Statistical Models	Zipf's Law for Text	Visually straight lines on Log log plot	Fitting a curve on a log log plot	Zipf's law, Power Law and Pareto Law
	28/11/2017	Modellling Similarity	Similarity Measures and their applications	Jaccard Similarity for Sets	Cosine similarity for texts	Cosine similarity for vector space	Probabilistic Similarity Measure - Kulback Leibler Divergence	Comparing results of Similarity
Week 7	4/12/2017	Generative Modelling of Web	Introduction to Generative Modelling	Sampling form Probability Distrubution	Evaluating a generative model	Pittfalls when increasing number of model parameters
	5/12/2017	Graph Theoritic Web Modelling	Reviewing terms from Graph Theory	The standard web graph model	Descriptive statistics of the web graph	Topology of Web Graph	Modelling Graphs with Linear Algebra
Week 8	11/12/2017	Meme Spreading		PPTX
	12/12/2017	Meme Spreading II
Week 9	18/12/2017	Herding Behaviour I
	19/12/2017	Herding Behaviour II
Week 10	08/01/2018	Online Advertising	Introduction to online advertising	Metrics of Oline Advertisment	Factors impact on Advertising	Understanding problems with Click Fraud
	09/01/2018	User Modelling
Week 11	15/01/2018	User Modelling (cont.)
Week 11	15/01/2018	Copyright
	16/01/2018	Copyright (cont.)
	16/01/2018	Net Neutrality
Week 12	22/01/2018	DEMO EXAM
	23/01/2018	EXAM Solution Discussion
Week 13	29/01/2018	Net Neutrality (cont.)
	30/01/2018	Misinformation (A)	Part A - PDF	Part A - PPTX
Week 14	05/02/2018	Misinformation(B)
	06/02/2018

Study Materials

Course materials for this introductory course to Web Science can be found at the Wikiversity page.
Tutorial Zero Slides : here!
ipython notebook guide
latex notations in ipython
Slides for the lecture on Dynamic Web Content with Python on 14.11.2017.
Slides for Crawler Development with Python on 17.11.2017
Notes for log-log plots.
Slides for Meme Spreading
Slides for Herding Behaviour
Online Advertisement videos:
1. Introduction to Online Advertisement
2. Metrics for Online Advertisement
3. Factors impact on Advertisement Campaigns
4. Understanding Problems with Click Fraud.
5. Optional: Interesting read: "Tracing the Trackers", Yu et. al.
  In: Proc. of WWW 2016 ("of the top 200 news sites, as ranked by Alexa, contain at least one tracker, and at least 50% of them contain at least 11").
Slides for lecture on Socio Economic Aspects of the Web on 19.12.2017

Further Material

Material last year: https://west.uni-koblenz.de/de/studying/courses/ws1617/introduction-to-web-science
Hal Berghel. Net Neutrality Reloaded. In: IEEE Computer, 2017, pp. 68-72. (behind IEEE paywall, accessible within university or using VPN)

Important Information

Examination

In order to obtain ECTS-Credits you need to both gain admission to the exam and you need to pass the exam. The exam is passed if you obtain a score of at least 50% in it.

The Final Examination will be held on February 19 (Monday), 2018 from 10:00 am onwards at E-011
The 2nd Examination: April 27, 2018 (Friday), from 12:00 pm onwards at M-001.

Assignments

You are expected to hand in all the assignments in due time, every week on Wednesday at 11:00 am. The assignments must be done by everyone in the group. The assignments should be handed in a pdf format with all valid source code and graphs if necessary. Assignments will be treated incomplete if any part of the solution is missing. Students need to accomplish at least 60% of the assignments in order to attend the final exam. Plagiarism is strictly forbidden and will result in disqualification from the final exam, of both sides of the plagiarism (copying and being copied). Students are also expected to explain some of the assignments.

SVN

The SVN repository to submit your assignments is : https://svn.uni-koblenz.de/westteaching/webscience-1718/GROUPNAME
Replace GROUPNAME with your group name in lower case letters. Please remember to have your assignments in different folders under "solutions" .

Last Year Students

Students who failed to secure passing grades last year can directly appear for the examinations this year. However, it is advisable to participate in the course and the tutorials.