Method and system for sentiment analysis of information

A system, comprising:

• a storage device storing a set of instructions;
• and
• at least one processor in communication with the storage device, wherein when executing the set of instructions, the at least one processor is configured to:
• obtain a user input;
• retrieve sentimental information from a database according to the user input, each sentimental information marked with a sentiment type;
• and
• classify the sentimental information based on the sentiment types,
• wherein to mark the sentiment type, the at least one processor is configured to:
• acquire preliminary information from the database according to the user input;
• construct a repository by storing the preliminary information in the repository;
• retrieve a sentiment lexicon by retrieving sentimental words or sentimental collocations from the preliminary information and storing the sentimental words or sentimental collocations in the sentiment lexicon;
• match the preliminary information with the sentiment lexicon to obtain a set of sentimental sentences;
• and
• analyze the set of sentimental sentences and marking with corresponding sentiment types.

A method implemented on at least one device each of which has at least one processor and a storage medium, the method comprising:

• acquiring information;
• constructing a repository by storing the information in the repository;
• retrieving a sentiment lexicon by retrieving sentimental collocations from the information and storing the sentimental collocations in the sentiment lexicon;
• matching the information with the sentiment lexicon to obtain a set of sentimental sentences;
• analyzing the set of sentimental sentences and marking with corresponding sentiment types;
• retrieving a corpus including the sentimental collocations marked with the sentiment types based on the set of sentimental sentences marked with the sentiment types;
• and
• training a sentiment analyzer using the corpus.