4. A device for improving performance and quality in computer-implemented semantic searching based on submitted search terms, identifying documents addressing topics suggested by the submitted search terms irrespective of whether the documents contain all or any of the search terms themselves, the searching seeking relevant documents from a corpus of documents having in part homogeneous structured data, the device comprising: circuitry configured to a. before accepting any search requests, preselect a set of common data fields present in the homogeneous structured data of the corpus documents, each data field being preselected for being topic-correlated and language-independent, wherein being language-independent identifies the data field as being in a single, standard natural or artificial language throughout the corpus of documents, regardless of the language of the individual corpus documents, or particular parts thereof, with which the data field is associated, b. operate at the search-controller level to mediate between a request function and an underlying generic text-search system, c. electronically receive from the re jest function a query containing a set of search terms, d. perform a narrow expansion of the set of search terms by determining alternative terms to be combined with respective search terms to obtain a more inclusive text-matching query, e. perform a sampling search using the more-inclusive text-matching query obtained in (d), and sort the results by relevance to the query, the most relevant results first, f. retrieve a predetermined number of the most relevant results from the search of (e), the most relevant results constituting a sample set of documents to be analyzed, g. retrieve values of the preselected topic-correlated, language-independent fields associated with the sample set of documents, h. statistically analyze the distribution of terms in the values of each of the preselected topic-correlated, language-independent fields, retrieved in (g), i. generate a signature of the sample set of documents as a function of a predetermined-sized portion of the most prevalent terms found in the statistical analysis of (h), associate with each term a weight, the weight for each term from any single preselected field being monotonically related to the prevalence of the term in its field as observed in the statistical analysis, and j. submit a new grand query, having the text-matching query devised in (d) and submitted for the sampling search in (e), and the signature generated in (i) based on the results of the sampling search and invoking top values from the preselected fields, as retrieved for the results in (g), with weights based on the prevalence analysis in (h).
4. A device for improving performance and quality in computer-implemented semantic searching based on submitted search terms, identifying documents addressing topics suggested by the submitted search terms irrespective of whether the documents contain all or any of the search terms themselves, the searching seeking relevant documents from a corpus of documents having in part homogeneous structured data, the device comprising: circuitry configured to a. before accepting any search requests, preselect a set of common data fields present in the homogeneous structured data of the corpus documents, each data field being preselected for being topic-correlated and language-independent, wherein being language-independent identifies the data field as being in a single, standard natural or artificial language throughout the corpus of documents, regardless of the language of the individual corpus documents, or particular parts thereof, with which the data field is associated, b. operate at the search-controller level to mediate between a request function and an underlying generic text-search system, c. electronically receive from the re jest function a query containing a set of search terms, d. perform a narrow expansion of the set of search terms by determining alternative terms to be combined with respective search terms to obtain a more inclusive text-matching query, e. perform a sampling search using the more-inclusive text-matching query obtained in (d), and sort the results by relevance to the query, the most relevant results first, f. retrieve a predetermined number of the most relevant results from the search of (e), the most relevant results constituting a sample set of documents to be analyzed, g. retrieve values of the preselected topic-correlated, language-independent fields associated with the sample set of documents, h. statistically analyze the distribution of terms in the values of each of the preselected topic-correlated, language-independent fields, retrieved in (g), i. generate a signature of the sample set of documents as a function of a predetermined-sized portion of the most prevalent terms found in the statistical analysis of (h), associate with each term a weight, the weight for each term from any single preselected field being monotonically related to the prevalence of the term in its field as observed in the statistical analysis, and j. submit a new grand query, having the text-matching query devised in (d) and submitted for the sampling search in (e), and the signature generated in (i) based on the results of the sampling search and invoking top values from the preselected fields, as retrieved for the results in (g), with weights based on the prevalence analysis in (h). 6. The device of claim 4 , wherein the grand query in (j) is embedded in a larger request for interaction of the semantic search with other searches, whether text-matching, semantic searching, or other varieties of search, as specified by respectively appropriate criteria syntax, the criteria syntax for the respective searches being combined with search operators to dictate the mode of interaction among the respective searches.