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W. N. Cheung

dblp:123/8815 · DBLP profile ↗
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1ranked-venue papers
1as first author
0since 2021 · last 1990
—ORCID · none

Domains — the database's venue-derived domains; a paper can count in several

Computer networks · 1 · 1 first-author

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Computer graphics and multimedia
1 paper
Image and video coding · 100%

Topics — the 1 heaviest of 1, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Image and video coding
block-based coding		 0.011990
Calculation of conditional probabilities in hierarchical block coding systems · IEEE Trans. Commun. 1990

Methods — techniques the papers use, named apart from their topics

markov model · 0.0conditional probability computation · 0.0
YearPublicationVenuePosition
1990 Calculation of conditional probabilities in hierarchical block coding systems
abstract
For the second and higher levels in the hierarchy of block coding, the first-order conditional probabilities are calculated so that the Markovian model can be applied for the direct evaluation of the probability of white blocks. The formulas presented enable the overall compression ratio of documents to be computed. A typical example is included to show the merits of multilevel block coding.>
W. N. Cheung
 IEEE Trans. Commun.1