Comprehensive Survey on Distance/Similarity Measures between Probability Density Functions
S. Cha. International Journal of Mathematical Models and Methods in Applied Sciences1 (4):
Distance or similarity measures are essential to solve many pattern recognition problems such as classification, clustering, and retrieval problems. Various distance/similarity measures that are applicable to compare two probability density functions, pdf in short, are reviewed and categorized in both syntactic and semantic relationships. A correlation coefficient and a hierarchical clustering technique are adopted to reveal similarities among numerous distance/similarity measures.