知识发现与信息分析的区别与联系
http://blog.sciencenet.cn/home.php?mod=space&uid=280034&do=blog&id=890951
肺癌与乳腺癌BRCA2基因关联的知识发现
http://blog.sciencenet.cn/home.php?mod=space&uid=280034&do=blog&id=889911
知识发现的知识点是文献中的隐含主题概念,属于隐性知识,就是从文献A与文献C中发现知识点B(文献中隐含的主题知识概念),这些知识点,做知识发现的人(情报人员或科研人员)事先一般是不知道的,例如:
Sem_filter:
Genes & Molecular Sequences, and Gene & Protein Names
3012 B-terms left after filter executed Wed May 13 03:09:25 2015
Viewed B-terms Wed May 13 03:24:14 2015
brca2
B-list on Wed May 13 03:30:34 2015
1 brca2
2 adiponectin
3 brca1
4 fhit
5 cox-2
6 toll receptor
7 promoter polymorphism
8 rankl
9 jnk
10 wnt
http://arrowsmith.psych.uic.edu/cgi-bin/arrowsmith_uic/view_b_txt.cgi?ID=24857
共词分析结果属于文献的显性知识,两个主题词出现在同一篇(同类)文献中,例如:
字段:主题词与主题词
记录数
占%
01.genes, brca1与genes, brca2 5 篇11.628% 02.breast neoplasms/genetics与genes, brca2 4 篇9.302% 03.breast neoplasms/genetics与genes, brca1 3 篇6.977% 04.genes, brca2与germ-line mutation 3 篇6.977% 05.breast neoplasms/genetics与germ-line mutation 2 篇4.651% 06.breast neoplasms/genetics与neoplasm proteins/genetics 2 篇4.651% 07.breast neoplasms/genetics与ovarian neoplasms/genetics 2 篇4.651% 08.breast neoplasms/genetics与transcription factors/genetics 2 篇4.651% 09.breast neoplasms/pathology与mutation 2 篇4.651% 10.genes, brca1与germ-line mutation 2 篇4.651%
01.carcinoma, non-small-cell lung/genetics与lung neoplasms/genetics 84 篇9.700% 02.carcinoma, non-small-cell lung/diagnosis与lung neoplasms/diagnosis 65 篇7.506% 03.lung neoplasms/diagnosis与lung neoplasms/genetics 41 篇4.734% 04.adenocarcinoma/genetics与lung neoplasms/genetics 38 篇4.388% 05.adenocarcinoma/diagnosis与lung neoplasms/diagnosis 31 篇3.580% 06.gene expression regulation, neoplastic与lung neoplasms/genetics 22 篇2.540% 07.carcinoma, non-small-cell lung/metabolism与lung neoplasms/metabolism 21 篇2.425% 08.lung neoplasms/genetics与tumor markers, biological/genetics 21 篇2.425% 09.carcinoma, non-small-cell lung/drug therapy与lung neoplasms/drug therapy 20 篇2.309% 10.lung neoplasms/genetics与mutation 20 篇2.309%
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