tuang
大家好,
请问有学Bioinformatics的吗?
rtist
me
文章长度错误(请控制在3-50000字节)
drewlee
[quote]引用第1楼rtist于2006-11-10 19:31发表的“”:
me
文章长度错误(请控制在3-50000字节)
[/quote]
And me.
tuang
你们好。
你们有做这方面的project吗? 我做过关于 feature selection for cancer classification by microarray gene expression data. 你们呢?
rtist
我也做基因芯片方面
tuang
请问rtist, 你做microarray analysis中的哪方面呢?
rtist
乱七八糟,什么都掺活一点点儿。不过feature selection基本上很少做。
tuang
我觉得 feature selection (gene selection) 挺重要的. 它可
(1) improve the classification accuracy, because the existance of redundant features may
degrade the generalization ability
(2) discover domain knowledge, e.g. the target of the cancerous genes can be reduced
(3) measurement cost can be reduced
(4) computational cost can be reduced
而且, microarray data往往有太多genes, 所以feature selection 尤为重要
tuang
Rtist,
看来你是statistician, 你也用R 吗? 我也用这个语言.
rtist
我知道很重要,可是毕竟精力有限。你从哪儿看出我是statistician的?我好像充其量也只能算是半个。
我的确用R,而且几乎不用别的语言了(除了汉语和英语)。
tuang
Rtist,
From our name and blog. Statisticians, biologists, and computer scientists are all interested in bioinformatics.
huhui
Matlab7.0中的Bioinformatics非常不错,好好看看它的帮助文件。