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38results about How to "Reduce comparison" patented technology

Judgment method and device of malicious order address

The invention provides a judgment method and device of a malicious order address. By means of the judgment method and device of the malicious order address, a malicious order user can be quickly judged and found, particularly, the malicious order user who frequently scrambles for an order can be quickly judged and found and intercepted, the interests of a common user are ensured, the address query time is short, and the query efficiency is high. The judgment method of the malicious order address includes the steps that order addresses are received, and the addresses with the most identical parts as the order addresses are found from an address base and used as similar addresses according to a scheduled sequence; the similarity and query time difference of the similar addresses and the order addresses are calculated, and the accumulated query times of the similar addresses are acquired, wherein the query time difference is the minimum of the differences between the current query time of the order addresses and the query time of the similar addresses; based on the similarity, the query time difference and the accumulated query times, the scores of the order addresses are calculated; the order address of which the score is greater than a preset score threshold is judged as the malicious order address.
Owner:BEIJING JINGDONG SHANGKE INFORMATION TECH CO LTD +1

Fast-moving star tracking matching identification method of star sensor

The invention relates to a fast-moving star tracking matching identification method of a star sensor and relates to the field of satellite autonomous navigation technologies. By utilizing the fast-moving star tracking matching identification method, the problems of small number of tracking matching fixed stars obtained by the existing identification method of tracking star of the star sensor and poor stability of a tracking method are solved. The existing method has the problem of mismatching caused by the fixed star just entering the field of view. For ensuring matching effectiveness simultaneously, the number of the tracked matching fixed stars is further increased so as to improve the stability of a star tracking algorithm. In the matching process, in order to make a smaller amount of calculation, matching number state identification and borderline state identification arrays are subjected to operation with bitwise, and if a result is 1, matching is considered to be successful. By adopting the identification method with first sorting and second two-way recursive matching, pointless comparison is reduced, mismatching caused by the star newly entering the field of view is eliminated, most important of all, the number of the tracked matching fixed starts of every step is greatly improved, and the stability of the tracking algorithm is further improved.
Owner:深圳市思聪教育科技有限公司

A Fast Star Tracking and Matching Recognition Method for Star Sensor

The invention relates to a fast-moving star tracking matching identification method of a star sensor and relates to the field of satellite autonomous navigation technologies. By utilizing the fast-moving star tracking matching identification method, the problems of small number of tracking matching fixed stars obtained by the existing identification method of tracking star of the star sensor and poor stability of a tracking method are solved. The existing method has the problem of mismatching caused by the fixed star just entering the field of view. For ensuring matching effectiveness simultaneously, the number of the tracked matching fixed stars is further increased so as to improve the stability of a star tracking algorithm. In the matching process, in order to make a smaller amount of calculation, matching number state identification and borderline state identification arrays are subjected to operation with bitwise, and if a result is 1, matching is considered to be successful. By adopting the identification method with first sorting and second two-way recursive matching, pointless comparison is reduced, mismatching caused by the star newly entering the field of view is eliminated, most important of all, the number of the tracked matching fixed starts of every step is greatly improved, and the stability of the tracking algorithm is further improved.
Owner:深圳市思聪教育科技有限公司

DNS cache processing method

PendingCN112040022AReduce occupancyStable and efficient query efficiencyTransmissionDomain namePathPing
The invention discloses a DNS cache processing method, which comprises the following steps of: storing a corresponding relationship between domain names and IP (Internet Protocol) addresses of DNS caches by adopting a dictionary tree structure, representing the domain names by using character strings corresponding to node paths, and storing the IP addresses corresponding to the domain names by using the positions of nodes; when the data is inserted, creating a node according to a character path in the domain name character string, and storing an IP address corresponding to the domain name intothe node corresponding to the domain name; and when the IP address corresponding to the domain name is queried, searching the node in the tree according to the character string path in the domain name character string, and obtaining the corresponding IP address stored in the node position after the node is found. According to the DNS cache processing mode provided by the invention, the storage space occupation can be greatly reduced while the stable and efficient query efficiency is obtained. According to the method, meaningless character string comparison is reduced, and the query efficiencyis high; the storage space does not need to be pre-allocated, and the occupied space is small; hash processing is not carried out on the data, and no conflict is generated.
Owner:CHENGDU DBAPP SECURITY

Component abnormity information searching method for monitoring log

ActiveCN105809038AReduce the number of matchesIncreased backward travel distancePlatform integrity maintainanceAlgorithmLogbook
The invention discloses a component abnormity information searching method for a monitoring log, and belongs to the field of software engineering. The method comprises the steps of 1, generating a monitor log and exporting to a txt file by a module of the component abnormity information searching method for the monitoring log; 2, sequentially matching each piece of abnormity information with the monitor log from the back to front, and recording the movement distance of the abnormity information as move; 3, looking up a character TSd which firstly appears to be dissimilar with TSm-1 and has the maximal digital distance with the TSm-1, finding the next MLd backwards from a character in the MLd flush with the TSd, and recording the movement distance of the abnormity information as move'; and 4, comparing the move with the move', judging the final movement distance of the abnormity information and moving the abnormity information, and continuing the matching operation. The method provided by the invention has the advantage of less matching times under the condition of ensuring matching accuracy; and the validity of the provided method and the advantage of less matching time are verified through experimental comparison with the existing Sunday character string matching method.
Owner:JIANGSU UNIV
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