Nominate inappropriate content for human judgment and reviews
Multiclass or multinomial classification is the problem of classifying instances into one of three or more classes (classifying instances into one of two classes is called binary classification).
Named Entity Recognition
Named-entity recognition is a subtask of information extraction that seeks to locate and classify named entities mentioned in unstructured text into pre-defined categories.
Text summarization refers to the technique of shortening long pieces of text.
Text classification is the task of assigning a set of predefined categories to free-text.
Natural Language Processing
Natural language processing is a subfield of linguistics, computer science, information engineering, and artificial intelligence concerned with the interactions between computers and human languages, in particular how to program computers to process and analyze large amounts of natural language data.