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Fuzzy Cube Granule Structure for Image Segmentation
Hongbing Liu,Chunhua Liu,Chang-an Wu,Jun Huang 보안공학연구지원센터 2015 International Journal of Multimedia and Ubiquitous Vol.10 No.6
Fuzzy Cube Granule Structure (FCGS) for image segmentation is proposed in the paper. Firstly, the atomic cube granule is represented as the vector including the YCbCr values of pixel of color image and radii 0. Secondly, the join operation between two cube granules is designed to obtain the larger cube granule. Thirdly, the FCGS is formed by the fuzzy inclusion measure defined by join operation and the user-defined granularity threshold . Global Consistency Error (GCE), Variation of Information (VI), Rand Index (RI) are used to evaluate the segmentations. Images selected from BSD300 are used to verify the feasibility of FCGS.
A Framework of Granular Computing Clustering Algorithms
Hongbing Liu,Chunhua Liu,Chang-an Wu 보안공학연구지원센터 2015 International Journal of Hybrid Information Techno Vol.8 No.12
A framework of granular computing clustering algorithms is proposed in the paper. Firstly, granules are represented as the normal forms, such the diamond granule in 2-domensional space and hyperdiamond granule in N-dimensional space, sphere granule in 2-dimensional space and hypersphere granule in N-dimensional space. Secondly, operations between two granules are designed to realize the transformation between two spaces with different granularities. Thirdly, the threshold of granularity is used to control the join process between two granules. The performance of granular computing algorithms is evaluated by the experimental results on the data sets selected from machine learning repository.
Two Indolocarbazole Alkaloids with Apoptosis Activity from a Marine-derived Actinomycete Z2039-2
Rui Liu,Tianjiao Zhu,Dehai Li,Jingyan Gu,Wei Xia,Yuchun Fang,HongbingLiu,Weiming Zhu,Qianqun Gu 대한약학회 2007 Archives of Pharmacal Research Vol.30 No.3
Bioassay-guided fractionation of the EtOAc extract from the fermentation broth of a marinederived actinomycete Z2039-2 led to the isolation of two known indolocarbazole alkaloids, K252c (1) and arcyriaflavin A (2). 1 and 2 exhibited moderate cytotoxic activities against the K562 cell line, and induced apoptotic activities at 10 and 100 µM, respectively. This is the first report on the significant apoptosis inducing effect of indolocarbazole alkaloids against K562 cancer cells.