174 results about "Compress Algorithm" patented technology

The invention relates to the technical field of data compression, in particular to a ZSTD compression algorithm optimization method based on joint coding and ternary decomposition, and the method comprises the following steps: S1, building a joint frequency table based on the joint distribution of the literal length and the matching length of a previous section, setting a frequency deviation criterion, and dynamically adjusting a low-frequency combination proportion; s2, decomposing the offset value structure into a leading segment, a trailing segment and a middle segment, performing bit width-entropy ratio analysis on the middle segment, and selecting a symbol index or bit stream coding; and S3, entropy discriminant coding is performed on the joint symbol and the offset symbol respectively, and a structure position is mapped synchronously to generate a structured compressed output stream. According to the method, collaborative optimization of frequency self-adaption, redundancy minimization and structured mapping is realized through joint symbol dynamic modeling and offset ternary structure entropy discriminant coding, so that the ZSTD compression efficiency and the coding stability are remarkably improved.

The invention discloses a memory management method and related equipment, and relates to the technical field of data storage, the method comprises the following steps: based on access information of memory pages of a target operating system, determining a dynamic popularity score of each memory page; on the basis of the current memory pressure level and the dynamic popularity score of the target operating system, executing a corresponding hierarchical data migration strategy so as to migrate different memory pages to the corresponding main Swap storage space or auxiliary Swap storage space; adjusting a compression algorithm applied to the auxiliary Swap storage space based on the current central processing unit utilization rate of the target operating system; and detecting real-time states of the main Swap storage space, the auxiliary Swap storage space and the physical memory, and adjusting a hierarchical data migration strategy and a compression algorithm based on a detection result. Through dynamic popularity perception, hierarchical data migration, adaptive compression regulation and cross-layer collaborative optimization, the memory utilization rate, the exchange efficiency and the overall system stability can be improved under different system loads.

The invention relates to a simulation result compression method and system based on semantic segmentation, equipment and a medium. The method comprises the following steps: performing feature extraction on a simulation result file to obtain semantic features; generating a segmentation point sequence according to the features by using a semantic segmentation model, and segmenting the file into a plurality of semantic blocks; extracting a compressibility feature vector for each block, and dynamically distributing an optimal compression strategy for the block through a prediction model; compressing each block by using the distributed strategy to generate a compressed data block; and finally, constructing a block sensing index based on the block type and the used strategy, and integrating the index and the data block to generate a compressed file. By adopting the method, the defects of limited compression ratio and incapability of supporting rapid random access caused by lack of semantic understanding of a general compression algorithm can be overcome, and by understanding the internal logic structure of the file and applying differential compression, the rapid retrieval and analysis capability of specific data is kept while the high compression ratio is realized.