(Semantic) Similarity-Blog

Why ballpoint pens and pencils are similar?

Archive for January, 2008

SIM-DL Server and Protege Plug-in released (beta2.1)

We are happy to announce the release of the next beta version (2.1) of our SimCat similarity server and Protege plug-in! The new release contains some major improvements such as an extended context model with several kinds of contexts, caching, lazy unfolding and a more intuitive user guidance for the plug-in.

Kinds of Contexts and their Impact on Semantic Similarity Measurement

The final draft of my paper about the impact of context on semantic similarity accepted for CoMoRea 2008:

Abstract: Semantic similarity measurement gained attention over the last years as a non-standard inference service for various kinds of knowledge representations including description logics. Most existing similarity measures compute an undirected overall similarity, i.e., they do not take the context of the similarity query into account. If they do, the notion of context is usually reduced to the selection of particular concepts for comparison (instead of comparing all concepts within an examined ontology). The importance of context in deriving meaningful similarity judgments is beyond question and has been examined within recent research. This paper argues that there are several kinds of contexts. Each of them has its own impact on the resulting similarity values, but also on their interpretation. To support this view, the paper introduces definitions for the examined contexts and illustrates their influence by example.

Janowicz, K. (2008): Kinds of Contexts and their Impact on Semantic Similarity Measurement. 5th IEEE Workshop on Context Modeling and Reasoning (CoMoRea) at the 6th IEEE International Conference on Pervasive Computing and Communication (PerCom’08); Hong Kong, 17 – 21 March 2008.