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基于LLE和LS_SVM的胃粘膜肿瘤细胞图像分类 被引量:3
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作者 甘岚 吕文雅 《华东交通大学学报》 2011年第3期83-87,共5页
胃粘膜肿瘤细胞图像的复杂性,组织器官形状的不规则性以及不同细胞的差异性,使得采用一般的线性分类方法对其进行分类很困难,结合局部线性嵌入(LLE)在处理非线性数据及最小二乘支持向量机(LS_SVM)在处理小样本、高维数及泛化问题方面的... 胃粘膜肿瘤细胞图像的复杂性,组织器官形状的不规则性以及不同细胞的差异性,使得采用一般的线性分类方法对其进行分类很困难,结合局部线性嵌入(LLE)在处理非线性数据及最小二乘支持向量机(LS_SVM)在处理小样本、高维数及泛化问题方面的优势,文章提出一种基于LLE+LS_SVM的胃粘膜肿瘤细胞图像分类方法,并采用LS_SVM的线性拟合误差来判断实验效果,最后比较本文方法与其他分类方法的优越性。实验结果表明,该方法在分类准确率和运行时间方面都有很大的优势。 展开更多
关键词 LLE LS_SVM 肿瘤细胞分类
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Non-coding RNAs regulate tumor cell plasticity 被引量:3
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作者 LIU BoDu SUN LiJuan SONG ErWei 《Science China(Life Sciences)》 SCIE CAS 2013年第10期886-890,共5页
Tumor metastasis is one of the most serious challenges for human cancers as the majority of deaths caused by cancer are associated with metastasis,rather than the primary tumor.Recent studies have demonstrated that tu... Tumor metastasis is one of the most serious challenges for human cancers as the majority of deaths caused by cancer are associated with metastasis,rather than the primary tumor.Recent studies have demonstrated that tumor cell plasticity plays a critical role in tumor metastasis by giving rise to various cell types which is necessary for tumor to invade adjacent tissues and form distant metastasis.These include differentiation of cancer stem cells(CSCs),or epithelial-mesenchymal transition(EMT)and its reverse process,mesenchymal-epithelial transition(MET).A growing body of evidence has demonstrated that the biology of tumor cell plasticity is tightly linked to functions of non-coding RNAs(ncRNAs),especially microRNAs(miRNAs)and long non-coding RNAs(lncRNAs).Therefore,understanding the mechanisms how non-coding RNAs regulate tumor cell plasticity is essential for discovery of new diagnostic markers and therapeutic targets to overcome metastasis. 展开更多
关键词 METASTASIS tumor cell plasticity CSCs EMT MIRNA IncRNA
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