Publications (28) View all
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Article: Bluetooth-WiFi based Combined Positioning Algorithm, Implementation and Experimental Evaluation
Procedia Technology. 01/2013; 7:37 - 45. -
Article: Bluetooth-WiFi based Combined Positioning Algorithm, Implementation and Experimental Evaluation
Procedia Technology. 01/2013; 7:37 - 45. -
Conference Proceeding: Wifi bluetooth based combined positioning algorithm
Eniinvie 2012; 03/2012 -
Article: Topic model validation
Neurocomputing 01/2011; · 1.58 Impact Factor -
Conference Proceeding: Probabilistic metrics for soft-clustering and topic model validation
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ABSTRACT: In this paper the problem of performing external validation of the semantic coherence of topic models is considered. The Fowlkes-Mallows index, a known clustering validation metric, is generalized for the case of overlapping partitions and multi-labeled collections, thus making it suitable for validating topic modeling algorithms. In addition, we propose new probabilistic metrics inspired by the concepts of recall and precision. The proposed metrics also have clear probabilistic interpretations and can be applied to validate and compare other soft and overlapping clustering algorithms. The approach is exemplified by using the Reuters-21578 multi-labeled collection to validate LDA models, then using Monte Carlo simulations to show the convergence to the predicted results. Additional statistical evidence is provided to better understand the relation of the metrics presented.Web Intelligence and Intelligent Agent Technology (WI-IAT), 2010 IEEE/WIC/ACM International Conference on; 01/2010
