Teadmiste otsing, formaliseerimine ja hoidmine

Code: ITV0060
Link: http://www.lambda.ee/index.php/Teadmiste_otsing,_formaliseerimine_ja_hoidmine or http://www.lambda.ee/index/itv0060
Lecturer: Tanel Tammet
Contact: tammet@staff.ttu.ee, 6203457, TTÜ AK223
Archives of previous years: 2009, 2008, 2007, 2006, [http:/cs.ttu.ee/kursused/wav4130/ older].

Time, place, result

Semester: spring
Grading: exam
Points: 3.5

Lectures: every Monday 15.00-16.30, room IT-137a
Practical work: every Monday after the lecture: 16.45-17.30

Practical work will give 40% and exam 60% of points underlying the final grade. There will be an optional (hard) third practical work: choosing this will give 60% from labs and 40% from exam.

Practical work

• two labs on the same theme.
• optional third lab

First lab

Date: 10 March.

Implement a system which can read html annotated according to the RDFa standard. The data read should be saved and printed in several formats:

• csv
• rdf xml syntax

NB! You may not use a ready-made RDFa parser/converter. Instead, use a html/xml parser and build the RDFa converter on top of that. Using xslt is also an OK option. Programming language and the html/xml parser choice is free.

You will have to find suitable annotated html pages to demonstrate your solution.

Additional reading:

• http://www.w3.org/TR/rdf-primer/ RDF tutorial first parts: background for RDFa
• http://en.wikipedia.org/wiki/RDFa wikipedia article on RDFa
• http://www.w3.org/TR/xhtml-rdfa-primer/ relatively easy-to-read official RDFa primer
• http://www.youtube.com/watch?v=ldl0m-5zLz4 and http://www.youtube.com/watch?v=mxE3FeOyS-E video tutorials of RDFa
• http://www.w3.org/TR/rdfa-syntax official standard
• Media:portaalidekoosvoime.ppt või pdf kujul Media:portaalidekoosvoime.pdf (Estonian)

You may also look at some practical non-obligatory programming suggestions in Estonian: rdfa esimese praksi soovitusi.

Second lab

Using the results of first lab for rule-based derivation of new information.

Details of the second lab: rule system for tourist suggestions.

Third lab

Only for a few selected students. Will appear in April.

Course structure

Intro and paradigms of knowledge representation

1 lecture.

Overview of knowledge representation: http://en.wikipedia.org/wiki/Knowledge_representation

• Procedural
• Declarative
  • logic
  • relational, network, object databases
  • semantic networks
  • frame systems
  • property/value pairs
  • rule/expert systems
  • rdfs and owl

Different property/value pair representations

Introduction to RDFa

1 lecture

Relational databases, logic and RDF

1 lecture

Logic

• propositional, first order, higher order
• semantics/models
• proofs and deriving new information
• automated reasoning

Planning

With logic and reasoning-based methods.

Specific versions of 1st order logic and rule systems

• KIF
• CL
• ontologies
• wordnet
• cyc
• restricted english systems