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We review pseudo-relevance feedback as a mechanism for expanding short texts. Where short texts exhibit evolving concepts, topics and other characteristics, Web-based feedback systems were touted as the most ideal way of enriching the feature space of short texts. However, we note from a recent implementation of a Web-based pseudo-relevance feedback that it would only perform well under clinical situations...
To improve the vibration and noise measurements of hypoid gear, the generation mechanism of gear noise is analyzed, one use of PCI multi-channel simultaneous acquisition card within FPGA interface to gear parametric measuring is proposed, and the intelligence and flexibility of the hardware is accomplished by way of MCU extended. Finally, the prototyped PCI board is designed and constructed, and the...
A kernel fitting algorithm is proposed for speech denoising to improve the precision of voice activity detection (VAD) and the performance of speech enhancement, of some popular algorithms. In the algorithm, a noisy speech frame is filtered by kernel fitting, and then its power spectral density is estimated and weighted by a gain factor constructed from frame energy and zero-crossing rate, so that...
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