Which of the following is not a basic procedure for text mining?
A: Text preprocessing
B: Text classification
C: Text transformation
D: Text mining
A: Text preprocessing
B: Text classification
C: Text transformation
D: Text mining
举一反三
- Which description about text classification in SMS spam control is wrong? A: Text classification relies on the patterns of SMS spam B: Machine learning is widely used in text classification C: Text classification uses phone numbers to filter SMS spam D: Text classification can be applied at a mobile cellular operator
- There are _____ texts. They are Text A _________________, Text B _________________, Text C _________________, Text D _________________.
- Which of the following is not the clue of the text?
- According to the text, which of the following are dysfunctions caused by the drug abuse? ( ) According to the text, which of the following are dysfunctions caused by the drug abuse? ( )
- 函数$f(x)=x+\sin x$的( )。 A: 上凸区间为$(2n\text{ }\!\!\pi\!\!\text{ },(2n+1)\text{ }\!\!\pi\!\!\text{ })$,下凸区间为$((2n-1)\text{ }\!\!\pi\!\!\text{ },2n\text{ }\!\!\pi\!\!\text{ })$ B: 上凸区间为$((2n-1)\text{ }\!\!\pi\!\!\text{ },2n\text{ }\!\!\pi\!\!\text{ })$,下凸区间为$(2n\text{ }\!\!\pi\!\!\text{ },(2n+1)\text{ }\!\!\pi\!\!\text{ })$ C: 上凸区间为$(n\text{ }\!\!\pi\!\!\text{ },(n+1)\text{ }\!\!\pi\!\!\text{ })$,下凸区间为$((n-1)\text{ }\!\!\pi\!\!\text{ },n\text{ }\!\!\pi\!\!\text{ })$ D: 上凸区间为$((n-1)\text{ }\!\!\pi\!\!\text{ },n\text{ }\!\!\pi\!\!\text{ })$,下凸区间为$(n\text{ }\!\!\pi\!\!\text{ },(n+1)\text{ }\!\!\pi\!\!\text{ })$