Haifeng Zhao

Learn More
We consider the problem of locality preserving projections (LPP) in two-dimensional sense. Recently, LPP was proposed for dimensionality reduction, which can detect the intrinsic manifold structure of data and preserve the local information. As far as matrix data, such as images, are concerned, they are often vectorized for LPP algorithm to find the(More)
Many previous researchers have converted background knowledge as constraints to obtain accurate clustering. These clustering methods are usually called constrained clustering. Previous ordering constraints are instance level non-hierarchical constraints, like must-link and cannot-link constraints, which do not provide hierarchical information. In order to(More)
Four kinds of solvent extracts from three Chinese barley varieties (Ken-3, KA4B, and Gan-3) were used to examine the effects of extraction solvent mixtures on antioxidant activity evaluation and their extraction capacity and selectivity for free phenolic compounds in barley through free radical scavenging activity, reducing power and metal chelating(More)
The classical ReliefF and F-statistic feature selections can not be directly applied into multi-label problems due to the ambiguity produced from a data point attributed to multiple classes simultaneously. In this paper, we present MReliefF and MF-statistic algorithms for multi-label feature selections. Discriminant features are selected to boost the(More)
OBJECTIVE To explore the effects of resveratrol on astrocyte and TNF-α in hippocampus of Alzheimer's disease (AD) model rats. METHODS Sixty rats were randomly divided into six groups: sham control group, model group, resveratrol 20, 40, 80 mg/kg group, and estradiol valerate group (0.8 mg/kg). The model of AD was established by ovariectomy combined(More)
CXCR4 is the receptor of stromal cell-derived factor (SDF-1) and is expressed in many types of cancer cells. It also plays an important role in metastasis of malignant disease. In this study, we detected the expression of CXCR4 in 81 patients with myelodysplastic syndrome (MDS) by flow cytometry. We categorized MDS patients into the high-expression group(More)
Memory impairment is considered to be one of the most prominent consequences of aging. Deterioration of memory begins in advance of old age in animals, including humans. Thus, it is extremely important to prevent memory decline for increasing healthy aging. Ginsenoside, the effective ingredient of ginseng, has been reported to have a neuron beneficial(More)
Background. Monocyte chemoattractant protein-1 (MCP-1) has been shown to affect the progression of various inflammatory disorders, including pancreatitis. To investigate the role of MCP-1 in acute pancreatitis and to seek possible therapeutic means, we evaluated the effect of a plasmid expression vector containing a dominant-negative mutant MCP-1 gene(More)
Megakaryocytopoiesis is governed by a complex network of haematopoietic growth factors that regulate the different stages of the process, in which haematopoietic stem cells undergo megakaryocytic lineage commitment, proliferation, maturation, and functional activation to produce platelets. MicroRNAs (miRNA) are a class of about 22-nucleotide noncoding RNAs(More)