Measure and Visualize Semantic Similarity Between Subgraphs
March 19, 2012
As I blogged previously, I am working on measuring the performance of my keyword extraction algorithms. The confusion matrix approach I have implemented is quite ‘harsh’. It ignores any semantic information and simply treats the concepts as words, and counts hits and misses between two sets of concepts. To benefit from the semantic information described […]
Ontology-based semantic similarity measurements: an overview
September 9, 2011
My thesis is about keyword extraction of biological notes, using semantic ‘dictionaries’ called ontologies. These ontologies are large networks, where each node stands for a concept, and each connection between nodes for relations. See the picture on the right for a visual representation of an ontology. To identify the subject of a text, I need […]