Artificial Intelligent

1. Machine Learning

1.1. Deep learning

1.2. Predictive analysis

1.2.1. Recommendation system

1.2.1.1. Finding similar users

1.2.1.2. Collecting preference

1.2.1.2.1. Data analysis

1.2.1.3. Collective filtering

2. Natural language processing(NPL)

2.1. Translation

2.2. Classification & Clustering

2.3. Information extraction