how can i compute probabalies in haffmaneco
2 次查看(过去 30 天)
显示 更早的评论
how i can i compute probabalties to compress all letters small capital and numbers
3 个评论
采纳的回答
Walter Roberson
2020-2-8
[unique_symbols, ~, bin_number] = unique(YourText(:));
symbol_counts = accumarray(bin_number, 1);
symbol_probs = symbol_counts ./ numel(YourText);
Alternately,
sparse_count = sparse(1, double(YourText(:)), 1);
[~, unique_symbols, symbol_counts] = find(sparse_count);
unique_symbols = char(unique_symbols.');
symbol_probs = symbol_counts.' ./ numel(YourText);
In both cases, after the code, unique_symbols will be a column vector of characters that exist in the text, and symbol_probs will be the corresponding probability.
The sparse() version has a minor flaw that it will fail if any characters in the text are binary 0.
更多回答(3 个)
Yusuf lamah
2020-2-8
2 个评论
Walter Roberson
2020-2-10
Are you certain that this remark about needing to know how to compute the probabilities is the answer that you needed to your question? You Accepted it ?
Yusuf lamah
2020-2-10
1 个评论
Walter Roberson
2020-2-10
That is not a continuation of this question.
You should first use Google Scholar to research the topic.
另请参阅
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!