MongoDB storage-oriented tense RDF tetrad model and redundancy attribute elimination method

The invention relates to a MongoDB storage-oriented tense RDF (Resource Description Framework) tetrad model and a redundancy attribute elimination method, which comprise the following steps of: 1, constructing a tense RDF tetrad data model, taking tense information as a newly-added tuple of RDF triad expansion, expanding a triad into a tetrad model containing tense information, and taking the tense information as the newly-added tuple of RDF triad expansion; the extended tense RDF tetrad data model is defined, and the tense RDF tetrad data model is obtained; step 2, using a document-oriented non-relational MongoDB database to store tense RDF tetrad instance data, and using a non-relational MongoDB database to store tense RDF tetrad instance data; and step 3, for the tense RDF tetrad data in the text form stored in the MongoDB database, using a weighting-based design algorithm to find out instance attributes with relatively high repetition, and eliminating the redundant instance attributes in the constructed o