优化矩阵乘法算法的复杂度

P. Rathod, Ankit Vartak, Neha Kunte
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引用次数: 4

摘要

通过对过去几年许多分析师关注的问题的鸟瞰,可以了解公司是如何收集和传输大量信息的。由于在传输大量数据时存在问题。这需要一个小时来克服这些问题。数据可以压缩,如文字文件或图像文件等,以有效地发送数据。压缩必须以这样一种方式进行,即数据丢失最小(即0%)。图像压缩有助于克服发送大图像的问题。在这个过程中,离散余弦变换(DCT)起着至关重要的作用。在DCT中,对于JPEG图像的压缩,我们有量化和编码技术。在整个工作中,我们使用自定义矩阵乘法算法(CMM)来降低矩阵乘法问题的复杂性。实验结果表明,与Naïve矩阵乘法和Strassen矩阵乘法相比,DCT的性能有所提高。由于Strassen的时间和空间复杂性比Naïve小,性能得到了提高。与Strassen的算法相比,CMM具有更少的时间和空间复杂性,我们期望在性能上有更多的提高。压缩所需的时间和对不同图像使用不同算法压缩后的文件大小有助于区分性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimizing the complexity of matrix multiplication algorithm
With the bird's eye view of many analyst's attentions in the last few years to know how companies are collecting and transmitting enormous amounts of information. As there are problems in transmitting large amount of data. This is a need of an hour to overcome the problems. The data can be compress such as word file or image file etc. to send the data efficiently. Compression must be done in such a way that loss of data is minimum (i.e. 0%). Image compression helps to overcome the problem of sending large images. In this Discrete Cosine Transformation (DCT) plays a crucial role. In DCT, for compression of JPEG images we have techniques of Quantization and encoding. In this whole work, we have used Custom matrix multiplication algorithm (CMM) for reducing the complexity of matrix multiplication (MM) problem. The results from the experiment when comparing with Naïve matrix multiplication and Strassen's matrix multiplication shows increase in the performance of DCT. As the performance have increased due to the less time and space complexity of Strassen's as compared to Naïve. As CMM is having less time and space complexity as compared to Strassen's algorithm we are expecting to have more increase in performance. The time required for compression and the size of the files after compression with different algorithms for different images helps to differentiate between the performances.
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