Author Archives: Fotis Kokkoras

About Fotis Kokkoras

I am a lecturer @ University of Thessaly, Greece

DEiXTo mugs

Yes! We finally did it. They are very rare though – 3 pieces only!!!

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Journal Paper about DidaxTo

The DidaxTo approach is fully presented in a paper accepted for publication by the  Knowledge and Information Systems Journal (KAIS). Pantelis Agathangelou, Ioannis Katakis, Ioannis Koutoulakis, Fotios Kokkoras and Dimitrios Gunopulos. “Learning Patterns for Discovering Domain Oriented Opinion Words“, Knowledge and Information Systems Journal … Continue reading

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DidaxTo is available for experimentation.

DidaxTo implements an unsupervised approach for discovering patterns, that will extract a domain-specific dictionary from reviews. The approach utilizes opinion modifiers, sentiment consistency theories, polarity assignment graphs and pattern similarity metrics. More details in the DidaxTo page.

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DEiXTo will power a Sentiment Analysis start-up.

A new challenge ahead! We are going to help a start-up to build its proof of concept, sentiment analysis application. We will provide structured data scrapped from some challenging web sources. Web extraction techniques can provide the initial amounts of data … Continue reading

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Pound sterling char in DEiXTo regular expressions

We were building a couple of wrappers recently for Jürgen (from Germany) and we fall upon a strange issue. The pound sterling character we had used in a regular expression (required for extracting prices in the UK currency) was not recognized as … Continue reading

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