Hybrid database interface with intent expansion

A computer program product comprising one or more computer readable storage media, and program instructions collectively stored on the one or more computer readable storage media, the program instructions executable by a processor to cause the processor to perform operations comprising:

• generating an intent string representative of a user's intention based on an input string received as an input by the user, wherein the input includes a query request directed to querying a graph database;
• generating a search string that includes text from the input string and text from the intent string, wherein the generating the search string further comprises:
• processing the input string using a natural language processing technique to extract a phrase from the input string, producing an extracted phrase;
• generating a vector embedding of the extracted phrase;
• extracting one or more phrases from metadata associated with the graph database;
• computing one or more embeddings for the one or more phrases extracted from the metadata;
• identifying a closest phrase based on a similarity comparison between the vector embedding of the extracted phrase and the one or more embeddings for the one or more phrases extracted from the metadata;
• and
• appending text from the closest phrase to the search string;
• executing a text-based query against the graph database using the search string;
• executing an ontology-based query against the graph database using the search string;
• generating a combined set of search results from a first set of search results and a second set of search results, wherein the first set of search results is from the text-based query, and wherein the second set of search results is from the ontology-based query;
• generating final relevance scores for the combined set of search results by adjusting at least a portion of preliminary relevance scores of the combined set of search results;
• and
• generating a query response that includes the combined set of search results ranked according to the final relevance scores.

A computer system comprising a processor and one or more computer readable storage media, and program instructions collectively stored on the one or more computer readable storage media, the program instructions executable by the processor to cause the processor to perform operations comprising:

• generating an intent string representative of a user's intention based on an input string received as an input by the user, wherein the input includes a query request directed to querying a graph database;
• generating a search string that includes text from the input string and text from the intent string, wherein the generating the search string further comprises:
• processing the input string using a natural language processing technique to extract a phrase from the input string, producing an extracted phrase;
• generating a vector embedding of the extracted phrase;
• extracting one or more phrases from metadata associated with the graph database;
• computing one or more embeddings for the one or more phrases extracted from the metadata;
• identifying a closest phrase based on a similarity comparison between the vector embedding of the extracted phrase and the one or more embeddings for the one or more phrases extracted from the metadata;
• and
• appending text from the closest phrase to the search string;
• executing a text-based query against the graph database using the search string;
• executing an ontology-based query against the graph database using the search string;
• generating a combined set of search results from a first set of search results and a second set of search results, wherein the first set of search results is from the text-based query, and wherein the second set of search results is from the ontology-based query;
• generating final relevance scores for the combined set of search results by adjusting at least a portion of preliminary relevance scores of the combined set of search results;
• and
• generating a query response that includes the combined set of search results ranked according to the final relevance scores.