OpenNLP, StanfordCoreNLP, LingPipe. According to the official information of PHP Chinese website, ApacheOpenNLP is a Java natural language processing library developed by Apache Software Foundation, which provides some tools, such as part-of-speech tagging, information extraction, text classification, sentiment analysis, etc. The information extraction function can be used to extract resume information. StanfordCoreNLP is a Java natural language processing library developed by Stanford University's natural language processing team, which provides some tools, such as part-of-speech tagging, named entity recognition, syntactic analysis and information extraction, among which the information extraction function can be used to extract resume information. LingPipe is a Java natural language processing library developed by the natural language processing team of JohnsHopkinsUniversity, which provides some tools, such as part-of-speech tagging, named entity recognition, syntactic analysis, information extraction, etc. Among them, the information extraction function can be used to extract resume information.