Artificial Intelligence Techniques

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Presentation transcript:

Artificial Intelligence Techniques Internet Applications 3

Plan for next four weeks Week A – AI on internet, basic introduction to semantic web, agents. Week B – Microformats Week C – Collective Intelligence and searching 1 Week D – Collective Intelligence and searching 2

Your task I want you to produce a 5-10 minute presentation that expands on one of the following aspects: OWL RDF Problems with semantic Web Also 5-10 minutes on linking AI and semantic web

Aims of sessions What is collective intelligence? Some non-AI examples Cases Collaborative filtering

What is collective Intelligence? It has been around for a while. One definition includes “...combining of behaviour, preferences, or ideas of a group of people to create novel insights” Segaran (2007) So collecting data from groups of people, combine it and analyze it.

What is the biggest information source out there? Internet! Most commonly Web2.0 applications. It has been described as “building smart Web 2.0 applications”

Examples- non-AI Wikipedia –entirely produce by contributors. Reddit.com – where people vote on links to other websites. Amazon – readers ranking suppliers and products.

AI related examples Recommendation system based using social networks and your preferences.

Collaborative Filtering How do you get recommendations? Friends? Which Friend has the ‘best taste’? Generally learned over a long period of time. Usually like what you like.

Elements Database/file of recommendations Produce from a file Produce from crawling on web. Some measure of the recommenders Some measure of you likes to theirs.

Recommender system What is we want a movie recommendation. We could look for a critic who has taste most similar to our own and use their ratings. What we could also do is selected a critic but weight their scores against other critics scores.

Example taken from Segaran(2007) pp 7-17

This could be extended to Social Network sites APIs exist for del.icio.us This can be used to find popular sites based on tags.

Other examples Full-text search engines Learning from clicks Using web-crawlers Index based on words in the text. Learning from clicks Systems designed to build models of what is the most likely based on passed clicks.

References Segaran (2007) Programming collective Intelligence O’Reilly isbn- 0-596-52932-5

Your task I want you to produce a 5-10 minute presentation that expands on one of the following aspects: OWL RDF Problems with semantic Web Also 5-10 minutes on linking AI and semantic web