Method and device for optimizing extraction performance in multi-condition extraction
A multi-condition and conditional technology, applied in the computer field, can solve the problems of inability to perform automatic batch execution, and it is difficult to quickly obtain optimal adjustment results, and achieve the effect of improving the performance of target extraction.
Active Publication Date: 2020-06-02
ALIBABA GRP HLDG LTD
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Problems solved by technology
[0003] This method of manual intervention is difficult to quickly obtain optimal adjustment results in scenarios with many conditions, and cannot be automatically executed in batches
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[0037] Before discussing the exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe operations as sequential processing, many of the operations may be performed in parallel, concurrently, or simultaneously. In addition, the order of operations can be rearranged. The process may be terminated when its operations are complete, but may also have additional steps not included in the figure. The processing may correspond to a method, function, procedure, subroutine, subroutine, or the like.
[0038] The computer equipment includes user equipment and network equipment. Wherein, the user equipment includes, but is not limited to, computers, smart phones, PDAs, etc.; Or a cloud composed of network servers, among them, cloud computing is a kind of distributed computing, a super virtual computer composed of a group of loosely coupled computer sets. Whe...
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The application provides a method and device for optimizing extraction performance in multi-condition extraction. The method includes: judging whether the expression composed of the current condition contains only one condition; and / or the optimal execution sequence of all or part of the sequence; the optimal execution sequence of the sequence of all and part and / or the sequence of all or part of the optimal execution sequence is regarded as an overall condition and replaced by a variable , form a new expression containing the variable; return to execute the above judgment step for the new expression; if not, use the original expression to replace the variable back, and obtain the optimal execution order of the multiple conditions An expression; performing the target extraction in an optimal execution order of the plurality of conditions. The present application realizes the automatic determination of the execution order of multiple conditions, and effectively improves the performance of target extraction.
Description
technical field [0001] The present application relates to the field of computers, in particular to a method and device for optimizing extraction performance in multi-condition extraction. Background technique [0002] Multi-condition extraction is a process of extracting targets that satisfy multiple conditions at the same time from the full amount of data. There is a multi-condition extraction process in many scenarios, for example, database query scenarios with multiple conditions, suspicious data filtering scenarios with multiple conditions, data call / extraction scenarios with multiple conditions, and so on. At present, when multiple conditions are used for target extraction, the relationship between the multiple conditions is fixed, and the target extraction is performed using the fixed relationship between the multiple conditions and the fixed execution order. However, since the execution time of each condition is different, some may be long or some may be short, and t...
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IPC IPC(8): G06K9/62
CPCG06F18/253
Inventor 徐磊石
Owner ALIBABA GRP HLDG LTD