The invention provides a new word recognition immune genetic method based on a word formatting rate fitness function and belongs to the field of application of natural language information processing. The new word recognition immune genetic method comprises the following steps of: firstly, extracting a common morpheme according to characteristics of network new words and taking the common morpheme and a single word as demonstrative antibodies in an immune genetic method; designing a suitable fitness function by utilizing a word formatting rate and adding adjustment parameters into the fitness function so as to optimize a final experiment result; and finally, processing candidate words, identified by the immune genetic method, by news corpus, so as to obtain a final network new word. Compared with the prior art, aiming at the characteristics of the network new word, the fitness function suitable for identifying the network new word is designed; factors including the length of the network new word, occupied ratios of a single word and a word string and the like are sufficiently considered, and frequency number information in the word string is added into the design of the fitness function, so that the accuracy, recalling rate and F value of the finding of the network new word are improved.
New word recognition immune genetic method based on word formatting rate fitness function