Chongqing Liu

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Even after more than two decades of input devices development, many people still find the interaction with computers an uncomfortable experience. Efforts should be made to adapt computers to our natural means of communication: speech and body language. The aim of this paper is to propose a real-time vision system within visual interaction environments(More)
Locality Preserving Projections (LPP) is a linear projective map that arises by solving a variational problem that optimally preserves the neighborhood structure of the data set. Though LPP has been applied in many domains, it has limits to solve recognition problem. Thus, Discriminant Locality Preserving Projections (DLPP) is presented in this paper. The(More)
Tall cell variant (TCV) of papillary thyroid carcinoma (PTC) has been recognized for the past few decades as an entity showing aggressive biological behavior; however, there is considerable controversy regarding the definition, clinical and pathological features of TCV because of its rarity and difficult diagnosis. No clinical features can accurately(More)
The problem of speech/noise discrimination has become increasingly important as the automatic speech recognition (ASR) system is applied in the real world. Robustness and simplicity are two challenges to the speech/noise discrimination method for an embedded system. The energy-based feature is the most suitable and applicable feature for speech/noise(More)
BACKGROUND & AIMS Little is known about outcomes of patients with nonalcoholic steatohepatitis (NASH) who receive liver transplants. We performed a systematic review and meta-analysis to estimate post-transplant outcomes, survival times, and mortality from cardiovascular complications, sepsis, and graft failure in these patients. METHODS We searched(More)
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