truncated Huffman tree

Tr Huffman tree is a variation of Huffman coding algorithm used for lossless data compression. In this method, the Huffman tree is truncated by removing some of the least frequent symbols from the tree. This results in a smaller and simpler tree, which can be used to encode and decode the input data.

The truncation process is done by setting a threshold frequency value below which the symbols are removed from the tree. The remaining symbols are then assigned new codewords based on the truncated tree structure. The advantage of this method is that it reduces the size of the codebook and hence reduces the overall encoding and decoding complexity.

However, the downside is that it may result in a less optimal compression ratio compared to the full Huffman coding algorithm. Therefore, the choice of the threshold value is critical to achieving the right balance between compression ratio and encoding/decoding efficiency.