Searching multilingual documents based on document structure extraction

A computer program product for searching documents expressed in multiple natural languages, the computer program product comprising a computer readable storage medium having program instructions stored thereon, wherein the computer readable storage medium is not a transitory signal per se, and the program instructions are executed by a central processing unit (CPU) of a computer system to cause the computer system to perform a method comprising the steps of:

• the computer system extracting components of structures of the documents expressed in the multiple natural languages;
• based on the extracted components of the structures of the documents, the computer system classifying the documents into classifications including respective, mutually exclusive sets of documents expressed in different respective natural languages, the documents in each set having matching content;
• the computer system detecting a natural language in a query;
• based on the query and the detected natural language and based on a utilization of a search engine, the computer system selecting a document included in the documents whose content is indicated by the query and whose natural language matches the detected natural language;
• the computer system extracting first components of a structure of the selected document;
• based on the extracted first components, the computer system identifying a classification included in the classifications as including the selected document;
• the computer system identifying one or more other documents in the identified classification;
• and
• the computer system presenting the one or more other documents as having content that matches the content of the selected document, the one or more other documents being expressed in one or more respective natural languages different from the natural language of the selected document.

A computer system comprising:

• a central processing unit (CPU);
• a memory coupled to the CPU;
• and
• a computer readable storage device coupled to the CPU, the computer readable storage device containing instructions that are executed by the CPU via the memory to implement a method of searching documents expressed in multiple natural languages, the method comprising the steps of:
• the computer system extracting components of structures of the documents expressed in the multiple natural languages;
• based on the extracted components of the structures of the documents, the computer system classifying the documents into classifications including respective, mutually exclusive sets of documents expressed in different respective natural languages, the documents in each set having matching content;
• the computer system detecting a natural language in a query;
• based on the query and the detected natural language and based on a utilization of a search engine, the computer system selecting a document included in the documents whose content is indicated by the query and whose natural language matches the detected natural language;
• the computer system extracting first components of a structure of the selected document;
• based on the extracted first components, the computer system identifying a classification included in the classifications as including the selected document;
• the computer system identifying one or more other documents in the identified classification;
• and
• the computer system presenting the one or more other documents as having content that matches the content of the selected document, the one or more other documents being expressed in one or more respective natural languages different from the natural language of the selected document.