Welcome to the Wiki page of the course Search Engines, WS 2009 / 2010. Lecturer: Hannah Bast. Tutorials: Marjan Celikik. Course web page: click here.

Exercise Sheet 1

Here is a PDF of the slides of Lecture 1.

Here is a PDF of Exercise Sheet 1.

Introduce yourself on this page please (Exercise 1).

Upload your results to Exercise Sheet 1 on this page please.

Questions or comments below this line, most recent on top please

To Zhongjie + all: you are right, you can't add the #acl line to the document yourself, so I just did it for you. I will change the instructions on the upload page accordingly. Sorry for this initial confusion, but hey, good that we have a Wiki. Hannah 25Oct09 2:06pm

Hey everyone! Whenever the exercise is talking about frequencies and occurences. Does it talk about occurences in different documents or should we considre multiple occurences in the same document. Thanks a lot. Björn

To Johannes: How did you solve the problem? I have logged in my account as my name, and my email links only this account. But I still get the error message 'You can't change ACLs on this page since you have no admin rights on it! ' when I try to enter '#acl ZhongjieCai:read,write -All:read ' to the first line of the page... Zhongjie 25Oct09 01:15am

Problem solved. To everybody: don't try to create multiple users with the same e-mail address. Johannes 25Oct09 00:21am

Oh, I see, well that *must* be your user name. Sorry for not making that clear earlier. Please create an account with that user name and try again. Hannah 25Oct09 00:02am

No that is not my user name. Johannes 24Oct09 11:58pm

Hi Johannes, if you are logged in as JohannesStork you should be able to see it, did you try that? Hannah 24Oct09 11:59pmI don't know if this is the right place to ask, but I can't access my exercise page. It says "Sie dürfen diese Seite nicht ansehen." Johannes 24Oct09 11:50pm

Good question, Johannes. Please upload the source code separately, either as a .zip or .tgz archive. I have modified the instructions on the upload page accordingly. Sorry if that means additional work for you, we weren't expecting anybody to submit so early ... Hannah 24Oct09 11:43pm

Shall we put the whole source into the PDF? What about tar.gz? Johannes 24Oct09 5:18pm

Hi Johannes + all, the slides are now availabe as PDF, see the link above. Hannah 23Oct09 17:04

Note about Exercise 5: One can assume that a more general model of the word frequencies is given than that given in the lecture, i.e. eps * N * (1 / i^alpha). Now both parameters (eps and alpha) can be estimated simultaneously. Marjan 23Oct09 3:29pm

Can you provide the slides as PDF? Johannes 23Oct09 10:05am

Please note that the deadline for uploading your solutions of the exercises is always Monday, 23:59 (sharp). Marjan 22Oct09 6:15pm

When you add a question or comment here, please end it with your name and the date and time in bold face, just like I did now. Hannah 22Oct09 01:59am