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Post Closed as "Duplicate" by amoeba, whuber♦
Tweeted twitter.com/#!/StackStats/status/319402331013783553
made header more precise; added link for PCA, removed typo
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steffen
steffen
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Machine learning and pca How does PCA improve the accuracy of a predictive model?

I've seen in a kaggle challenge about digit recognition someone who used pcaPCA before decision tree or other techniques.

I thought it was just for compressing data but he aimed to improve his score.

How can pcaPCA improve score in this case ? Is it because there is less over-fittingoverfitting ?

Machine learning and pca

I've seen in a kaggle challenge about digit recognition someone who used pca before decision tree or other techniques.

I thought it was just for compressing data but he aimed to improve his score.

How can pca improve score in this case ? Is it because there is less over-fitting ?

How does PCA improve the accuracy of a predictive model?

I've seen in a kaggle challenge about digit recognition someone who used PCA before decision tree or other techniques.

I thought it was just for compressing data but he aimed to improve his score.

How can PCA improve score in this case ? Is it because there is less overfitting ?

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Jean
Jean
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Machine learning and pca

I've seen in a kaggle challenge about digit recognition someone who used pca before decision tree or other techniques.

I thought it was just for compressing data but he aimed to improve his score.

How can pca improve score in this case ? Is it because there is less over-fitting ?