Method, system and device for obtaining time compound words in medical text based on vocabulary word formation method

The invention discloses a method, device and system for extracting time compound words in a medical text, and particularly relates to the technical field of natural language processing information extraction. The system comprises a reading module, a calculation module and a display module. The reading module is mainly used for reading medical texts by the system. The calculation module comprises a time compound word extraction unit, a time compound word updating unit and a new time compound word structure extraction unit. Time compound words are extracted mainly according to a word formation method of numeral + time word + time collocation word, and a part of time compound word structures need to be summarized manually. The method comprises the following steps: a, reading a medical text; b, extracting time compound words through the time compound word structure; c, obtaining a time compound word structure through the time compound word; if the number is increased compared with that of the existing entities, c