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[Special Effects] UPLOAD_LY4 DL : 0: 通过MATLAB的程序解决相应图上处理中熵值和概率的问题-Adaptive Arithmetic coding. A source generates symbols from alphabet {A, B, C, D}. Probabilities of occurrence of the symbols are initially estimated as: Pr(A)=Pr(B)=0.25, Pr(C)= 0.2, and Pr(D)=0.3. After 100 generated symbols, the statistics changes to Pr(A)= 0.1, Pr(B)=0.3, Pr(C)= 0.4, and Pr(D)=0.2. After 300 symbols, statistics is: Pr(A)=0.6, Pr(B)=0.05 Pr(C)=0.1, and Pr(D)=0.25. Randomly generate a source sequence of length 500 symbols drawing the symbols from the true source distributions. That is, for the first 100 symbols, next 300 symbols, and last 100 symbols use the three distributions above, respectively. Encode this sequence using adaptive arithmetic coding that adaptively changes frequency of the source symbol occurrence every 100 symbols. Decode the sequence and compare the decoded and original sequences. Find the efficiency of the code.
Date : 2025-12-23 Size : 7kb User : 李渊
[Special Effects] Demon1 DL : 0: 一个求demon谱图的程序，对已知的采样信号找出其demon谱，从而找到里面的频率信息，已经封装为EXE程序，源代码是用MATLAB写的-A program for demon spectra to known sampling signals to find the demon spectrum, frequency of inside information, has been encapsulated in the EXE program, source code is written in MATLAB
Date : 2025-12-23 Size : 272kb User : 闫