I've been working on classifying emails from two authors. I've been successful in executing the same using supervised learning along with TFIDF vectorization of text, PCA and SelectPercentile feature selection. I used scikit-learn package to achieve the same.
Now I wanted to try the same using Unsupervised Learning KMeans algorithm to cluster the emails into two groups. I have created dataset wherein I have each data point as a single line in the python list. Since I am a newbie to unsupervised so I wanted to ask if I can apply the same dimensionality reduction tools as used in supervised (TFIDF, PCA and SelectPercentile). If not then what are their counterparts? I am using scikit-learn for coding it up.
I looked around on stackoverflow but couldn't get a satisfactory answer. I am really stuck at this point.
Please help!
Following are the techniques for dimensionality reduction that can be applied in case of Unsupervised Learning:-
Mentioned above are some of the approaches that can be used for dimensionality reduction of huge data in case on unsupervised learning. You can read more about the details here .
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.