BUT-HCTLab APPROACHES FOR SPOKEN WEB SEARCH - MEDIAEVAL 2011
Igor Szöke, Javier Tejedor, Michal Fapšo, José Colás · 2011
We present the three approaches submitted to the Spoken Web Search. Two of them rely on Acoustic Keyword Spotting (AKWS) while the other relies on Dynamic Time Warping. Features are 3-state phone posterior. Results suggest that applying a Karhunen-Loeve transform to the log-phone posteriors representing the query to build a GMM/HMM for each query and a subsequent AKWS system performs the best.