👉 Secretary-Encoding is a data compression technique that efficiently encodes sequences of characters by maintaining a dynamic, compact representation of the most recently seen characters and their frequencies. It operates in two main phases: first, it constructs a "secretary list" that determines the optimal frequency threshold for moving characters from this list to a compressed state, balancing between keeping recent characters and reducing redundancy. In the second phase, it processes the input sequence one character at a time, comparing each new character to the highest frequency character in the secretary list; if it's higher, the character is added to the compressed output and the list is updated. If not, it's discarded. This method achieves better compression than simple run-length encoding or basic Huffman coding by intelligently managing character frequencies, making it particularly effective for text data with varying character distributions.
