Course 課程Machine learning with python

1 What is supervised learning ?

（1）we teach the model then with that knowledge.it can predict unkown or future instances

（2）Teaching the model with labeled data告訴模型資料和資料特徵對應的標籤

（3）有兩種型別的監督學習-Classification and Regression

• Classification is the process of predict discrete class labels or categories
• Regerssion is the process of predicting continuous values

2 What is unsupervised learning?

（1）我們不用監督模型，讓模型自己去挖掘特徵和標籤。The model works on its own to discover information .意味著無監督學習演算法訓練資料，然後得到一個未標籤的資料。
（2）無監督學習技術
• Dimension reduction
• Density estimation發現資料結構
• Market basket analysis
• Clustering

3 What is clustering?

（1）Clustering is grouping of data points or objects that are somehow similar by
• Discover structure
• Summarization
• Anomaly detection

4 Supervised VS unsupervised learning