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NCTU-ML-class

2019 NCTU資工所 Machine Learning class
teacher:洪瑞鴻、邱維辰

notice:
作業有錯誤歡迎發issue與pull request修改 :)
write on 2020/04/15

HW04

logistic:

  • 對於gradient descent與newton's method,都要調learning rate (不同task要用不同learning rate)

EM alogo:

  • log likelihood

    1. likelihood要用+的,用乘的會變成極小值(0.X的784次方)
    2. normalized Posterior時,由於大家都是負數,會造成原本最大值在normalized後變最小值,故要用negative normalized改善。
    3. E-step向量化很重要,10分鐘->5秒
    4. for迴圈請注意cache miss
    5. 正確率約28%
  • likelihood

    1. likelihood用乘的
    2. E-step也可向量化
    3. prior中容易有幾個class的prob變為0
    4. 正確率約4x%

HW05

GP參考: http://krasserm.github.io/2018/03/19/gaussian-processes/
libsvm參考: https://github.com/cjlin1/libsvm

HW06

eigenvalue & eigenvector: https://drive.google.com/drive/folders/1vpMZ8n42cQJmU54vu38uNZ542-dA6MJb?usp=sharing

HW07

fisherface參考: https://www.bytefish.de/blog/fisherfaces/

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