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A Lossless Compression Method for Chat Messages Based on Huffman Coding and Dynamic Programming

open access: yesComputers, 2021
There is always an increasing demand for data storage and transfer; therefore, data compression will always be a fundamental need. In this article, we propose a lossless data compression method focused on a particular kind of data, namely, chat messages,
Julián Moreno Cadavid   +1 more
doaj   +1 more source

A quantum analog of Huffman coding [PDF]

open access: yes, 1998
We analyze a generalization of Huffman coding to the quantum case. In particular, we notice various difficulties in using instantaneous codes for quantum communication.
Braunstein, Samuel L.   +3 more
core   +3 more sources

Space-efficient Huffman codes revisited

open access: yesInformation Processing Letters, 2023
Canonical Huffman code is an optimal prefix-free compression code whose codewords enumerated in the lexicographical order form a list of binary words in non-decreasing lengths. Gagie et al. (2015) gave a representation of this coding capable to encode or decode a symbol in constant worst case time.
Szymon Grabowski, Dominik Köppl
openaire   +3 more sources

Lossless text compression using GPT-2 language model and Huffman coding [PDF]

open access: yesSHS Web of Conferences, 2021
Modern daily life activities produced lots of information for the advancement of telecommunication. It is a challenging issue to store them on a digital device or transmit it over the Internet, leading to the necessity for data compression.
Rahman Md. Atiqur, Hamada Mohamed
doaj   +1 more source

Prefix Codes: Equiprobable Words, Unequal Letter Costs [PDF]

open access: yes, 1996
Describes a near-linear-time algorithm for a variant of Huffman coding, in which the letters may have non-uniform lengths (as in Morse code), but with the restriction that each word to be encoded has equal probability.
Knuth Donald E.   +2 more
core   +6 more sources

Asymmetrical Two-Level Scalar Quantizer with Extended Huffman Coding for Compression of Laplacian Source

open access: yesAdvances in Electrical and Computer Engineering, 2013
This paper proposes a novel model of the two-level scalar quantizer with extended Huffman coding. It is designed for the average bit rate to approach the source entropy as close as possible provided that the signal to quantization noise ratio (SQNR ...
PERIC, Z.   +4 more
doaj   +1 more source

An Efficient Encoding Algorithm Using Local Path on Huffman Encoding Algorithm for Compression

open access: yesApplied Sciences, 2019
Huffman encoding and arithmetic coding algorithms have shown great potential in the field of image compression. These algorithms are the origin of current image compression techniques. Nevertheless, there are some deficiencies in both algorithms that use
Erdal Erdal, Atilla Ergüzen
doaj   +1 more source

Huffman Coding with Non-sorted Frequencies [PDF]

open access: yesData Compression Conference (dcc 2008), 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Klein, Shmuel T., Shapira, Dana
openaire   +1 more source

Comparison of Effects of Entropy Coding Schemes Cascaded with Set Partitioning in Hierarchical Trees

open access: yesMehran University Research Journal of Engineering and Technology, 2018
WT (Wavelet Transform) is considered as landmark for image compression because it represents a signal in terms of functions which are localized both in frequency and time domain.
Ali Iqbal   +4 more
doaj   +1 more source

Enhanced Huffman Coded OFDM with \\Index Modulation [PDF]

open access: yesIEEE Transactions on Wireless Communications, 2020
<pre>In this paper, we propose an enhanced Huffman coded orthogonal frequency-division multiplexing with index modulation (EHC-OFDM-IM) scheme. The proposed scheme is capable of utilizing all legitimate subcarrier activation patterns (SAPs) and adapting the bijective mapping relation between SAPs and leaves on a given Huffman tree according to ...
Shuping Dang   +4 more
openaire   +4 more sources

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