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176results about How to "Low latency)" patented technology

Self-adaptive malicious domain name detection method based on DNS (Domain Name Server) flow

The invention discloses a self-adaptive malicious domain name detection method based on a DNS (Domain Name Server) flow. The method comprises the following steps: collecting a blacklist and whitelistsample set provided by a third party platform, and selecting a random forest classifier to train a domain name structure detection model by using the blacklist and whitelist sample set as a training set base line according to domain name structure characteristic list; performing Whois query and tracking verification on a domain name which is judged as a malicious domain name; training a flow detection model; performing data preprocessing on a domain name to be detected and DNS flow data, inputting the domain name and the DNS flow data as a loaded domain name structure detection engine and a flow detection engine, and acquiring prediction results; updating a training set blacklist of the domain name structure detection engine according to data set of malicious domain name judged by the flowdetection engine, and establishing a self-adaptive malicious domain name detection. By adopting the method, suspicious domain names can be rapidly detected, a relatively low time delay and an acceptable accuracy rate can be maintained, multiple types of malicious domain names can be detected from a massive amount of data, and a relatively high accuracy rate and a relatively low false alarm rate can be maintained.
Owner:BEIJING INFORMATION SCI & TECH UNIV

Packet dispatching method and forward service dispatcher

The invention provides a packet dispatching method and a forward service dispatcher, relating to the field of communication. The packet dispatching method comprises the steps of: separating a forward service stream belonging to an access terminal to a top priority queue, a secondary top priority queue, a secondary lowest priority queue and a lowest priority queue according to the requirements of different services on QoS (quality of service) parameters; carrying out strict priority dispatching on the access terminal according to the sequence of the top priority queue, the secondary top priority queue, the secondary lowest priority queue and the lowest priority queue in each dispatching time slot; carrying out dispatching on the packet data of same priority queue in different access terminals by adopting a time slot polling method when a base station processes the packet data of the top priority queue, the secondary top priority queue and the secondary lowest priority queue of the access terminal of a sector to which the base station belongs; and carrying out dispatching on the access terminal by applying a proportional fair dispatching method when the bases station processes the packet data of the lowest priority queue of the access terminal of the sector to which the base station belongs. The invention provides supports for the packet and dispatching for differentiation QoS.
Owner:CHINA TELECOM CORP LTD

Method for distinguishing transformer magnetizing rush current based on weight mathematical morphology

The invention discloses a method for distinguishing a transformer magnetizing rush current based on weight mathematical morphology. The method comprises the following steps: (1) collecting a difference current signal of current transformers on two sides of a transformer differential protection according to a certain sample frequency, (2) judging whether a break variable among a plurality of continuous sampling values is larger a preset break variable limit value, if yes, collecting data of a half circle in a delayed mode and carrying out a step (3), or, continuing sampling, (3) selecting a data widow as a difference current signal value with the length of a half fundamental frequency, carrying out processing on the weight mathematical morphology and obtaining a processed signal waveform, and (4) obtaining a wave-shaped correlation coefficient, judging whether the wave-shaped correlation coefficient is smaller than a preset setting value of the wave-shaped correlation coefficient, if yes, judging that the interior of a transformer breaks, or, distinguishing the transformer magnetizing rush current. The method has the advantages of being simple in steps, small in calculated quantity, short in delayed time, easy to implement, strong in generality and the like.
Owner:SOUTH CHINA UNIV OF TECH

Handwriting display processing method and system based on dual systems, storage medium and equipment

The invention relates to a handwriting display processing method and system based on dual systems, a storage medium and equipment. The handwriting display processing method comprises follow steps: when writing software of a second system starts, sending a starting instruction to a first system through the second system, and starting a transparent writing layer in the first system according to the starting instruction; executing a handwriting drawing operation on the transparent writing layer according to a detected touch event, obtaining first handwriting, and displaying the first handwriting on the transparent writing layer; executing a handwriting drawing operation on a writing interface of the writing software according to the touch event, obtaining second handwriting, and displaying the second handwriting on a writing layer of the second system; after it is detected that the touch event is finished, if the handwriting drawing operation on the writing software is completed, erasing the first handwriting. The handwriting display processing method and system do not need HDMI coding and decoding and transmission time delay during the display process, and time delay of the handwriting display process is reduced.
Owner:GUANGZHOU SHIYUAN ELECTRONICS CO LTD +1
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