Report:Qweb/Search Interface/Cross Search
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Crossfile Searching
The organization of many online search services hosting multiple files presents the need for a way to extract data from one results set, and move the records over into another file to take advantage of special data content. This is referred to as crossfile searching.
In Qweb, there are four temporary memory lists to contain extracted data. They are named MEM1-4. The term MEM (without a numeral) automatically refers to MEM1.
In an instance where data needs to be moved from one file to the other, the user can simply enter the MEM command, and designate an identifying document number to extract from each record in a results set. The command MEM /XPN is commonly used, since XPN is the “standardized patent number” field. (To facilitate crossfile searching, Qweb has ensured that patent numbers have been placed into this standardized format in all of its patent files).
Once the MEM command has issued, the user needs only to switch into another file, and type the command *MEM /XPN to extract the data from the MEM storage space into the new file. The extracted results will then appear as a new “search set,” and may be manipulated further by display commands, or combined with another search conducted in the new file.
Temporarily stored data in the MEM lists will be stored up to a week, and then erased. The data files are usually erased on Saturdays. The statistical analysis commands will always place its results in the MEM2 temporary storage list, so users should be careful not to place important results sets into that memory list.
Editor's Note:Crossfile searching is well implemented in Qweb. The MEM commands make moving around results files easy and let the user take advantage of all the additional information located on the various available files.
