Test analysis: this question belongs to extracting keywords. How to extract keywords, you can use the following methods:
Method 1: Extract elements. This method is mainly aimed at narrative materials, and narrative paragraphs contain messages. To compress this style, we should grasp the narrative elements: time, place, people (including object, identity, etc. ) and events. To sum up: when, where, who did what and what was the result. Then adjust this information to extract keywords.
Method 2: Pick the center. This method should pay attention to accurately grasping the center of a language material, pruning, extracting central sentences or key sentences, and removing redundant branches and leaves as required. Generally speaking, news materials often grasp the first sentence or the first paragraph, which is the introduction of news. The materials to be discussed or explained should be able to grasp the central argument or the central meaning to be explained, and then extract the key words from the central sentence. Method 3: Hierarchical refining For materials with complex semantics, we can adopt the method of divide and conquer, first divide the original paragraph into levels, refine the key points of each level, and then extract keywords.