Gabriel Recchia, Graduate Student Extraordinaire
I'm Gabriel Recchia, a graduate student in the Cognitive Science department at IU, and part of Dr. Michael Jones' Cognitive Computing Laboratory. I work on computational models of semantic memory, and occasionally give talks on how games can change the world (in a good way). I'm also a sucker for cool visualizations, hence the cross-section of one of Katy Börner's mesmerizing 'Atlas of Science' visualizations at left.
Teaching & ResearchLab page of links for current students of Q270, Experiments and Models of Cognition |
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LMOSS: Lightweight Models of Semantic Similarity LMOSS is a software tool that calculates simplified pointwise mutual information (PMI) scores between any pair of words in a corpus. When trained on a large corpus, rank-ordered PMI scores correlate quite well with rank-ordered human similarity judgments (e.g., if trained on Wikipedia PMI will rank "car" and "automobile" as quite similar, and "car" and "humidifier" as not-so-similar). LMOSS offers an interface for PMI scores similar to the official web interface for Latent Semantic Analysis, allowing matrix comparison, one-to-many comparison, pairwise comparison, and forced-choice comparison (useful for testing your PMI model on standardized synonymy tests like TOEFL). You'll need your own corpus to train it on--one of the advantages of PMI is that it's fast and easy to train on your own domain-specific corpora.
You can read more here (Windows only; works on Vista and XP). If you download the program and it won't run at all, you may need to first download and install the .NET Redistributables v. 3.5 from Microsoft.
Contact Info
Dept. of Psychological and Brain Sciences
Indiana University, Bloomington, IN, 47401
grecchia@indiana.edu