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Topic: Unary coding

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Truncated binary encoding

Golomb coding

	Learn more about Entropy encoding in the online encyclopedia. (Site not responding. Last check: 2007-10-13)
		An entropy encoding is a coding scheme that assigns codes to symbols so as to match code lengths with the probabilities of the symbols.
		Typically, entropy encoders are used to compress data by replacing symbols represented by equal-length codes with symbols represented by codes proportional to the negative logarithm of the probability.
		If the approximate entropy characteristics of a data stream are known in advance (especially for signal compression), a simpler static code such as Unary coding, Elias Gamma coding, Fibonacci coding, Golomb coding, or Rice coding may be useful.
	www.onlineencyclopedia.org /e/en/entropy_encoding.html (260 words)

	Golomb coding - Wikipedia, the free encyclopedia
		Golomb coding is a form of entropy coding invented by Solomon W. Golomb that is optimal for alphabets following geometric distributions, that is, when small values are vastly more common than large values.
		The quotient is sent in unary coding, followed by the remainder in truncated binary encoding.
		It is equivalent to Golomb coding where the tunable parameter is a power of two.
	en.wikipedia.org /wiki/Golomb_coding (223 words)

	ECTC Coding (Site not responding. Last check: 2007-10-13)
		It is the fact that it is a unary instruction (only one operand) and that operand is not a register, that tells you to use the Unary-Operand mode and thus the escape code D.
		It is the fact that the operation is unary and the fact that the operand is a register that tells you to use the Unary-Register mode and thus the escape codes F and D.
		It is the fact that the op code is a jump instruction that tells you to use the Jump mode and thus the escape code E.
	core.ecu.edu /csci/wirthj/ECTC/codeECTC-e.html (1005 words)

	[No title] (Site not responding. Last check: 2007-10-13)
		Coding Style ============ Nice code should look nice and structured, there is no doubt about this.
		If you use one of them, and can't live without auto-indentation, you may submit the code that doesn't follow these guidelines, but expect any such unstructured code to be reformatted.
		If the code is good, it should be clear what the line does just by glancing at its beginning anyway.
	migo.sixbit.org /software/arch-perl/doc/CodingStyle (296 words)

	The Dirac Algorithm: Wavelet Coefficient Coding (Site not responding. Last check: 2007-10-13)
		The entropy coding used by Dirac in wavelet subband coefficient coding is based on three stages: binarisation, context modelling and adaptive arithmetic coding.
		Therefore the codec conditions the probabilities used by the arithmetic coder for coding bins 1 and 2 on the size of the neighbouring coefficients and the parent coefficient.
		All arithmetic coding (AC) requires are estimates of the probabilities of symbols as they occur, and this is where context modelling fits in.
	www.bbc.co.uk /rd/projects/dirac/documentation/algorithm/wlt_coeff_coding.htm (1354 words)

	The Infospheres Java Coding Standard
		Unary operations (like -, !, and ++) should not be separated by their operands.
		Whitespace comments and code lines are not counted, nor are lines of code less than 3 characters long (such as lines with only a solitary brace).
		The insertion of the test code at compile time, and the enabling and disabling of test code at run-time, is completely under the control of the developer.
	www.infospheres.caltech.edu /resources/code_standards/java_standard.html (6672 words)

	ECTC Coding (Site not responding. Last check: 2007-10-13)
		When the mode code is direct, indexed by x, or indexed by y, then the operand code is interpreted as a memory address.
		In the case of direct mode, the operand code is the address of the memory cell and the operand is the content of that memory cell.
		In the case of indexed by x or indexed by y modes, the operand code is combined with the content of the x or y register to get the actual address of the memory cell.
	core.ecu.edu /csci/wirthj/ECTC/codeECTC-c.html (7221 words)

	Hacking Data Compression - Lesson 11
		The simplest example is unary coding: value binary coding 1 01 2 001 3 0001 4 00001 5 000001 16 00000000000000001 64 [...] 256 [...] A bunch of zeros equal to the value, followed by a '1' stop bit.
		Since the first part is a unary count, there is one '0' for every bit in the second part.
		After all, it isn't using "optimal" coding on the match lengths, it still has the extra tag bits, and it makes no attempt to compress the free characters.
	www.fadden.com /techmisc/hdc/lesson11.htm (2080 words)

	base class destructors and unary_function (Site not responding. Last check: 2007-10-13)
		Aren't coding standards supposed to be rules extracted from common practice rather than rules put out into the world while expecting others to follow them?
		I suspect that there are a few added attributes on the "common practice" that are not mentioned; something like "common practice amongst skilled practitionners, in shops which seriously care about the quality of their code".
		(I've had to fight on several occasions to get it removed from coding guidelines.) All in all, I'm pretty sure that Herb and Andrei have used their best judgement, and not adopted rules just because they are "common", or refused rules that have worked in practice, just because they haven't yet become "common".
	www.codecomments.com /C_Modurated_group/message499946.html (1368 words)

	pRAM-256 Training (Site not responding. Last check: 2007-10-13)
		The N output pyramids indicate the class of the input and either unary (N classes) or binary (2^N classes) coding can be used.
		The output pyramids are trained seprately as full discriminators (unary coding) or as a set (binary coding).
		The error function is calculated according to the output coding selected and from this, the reward and penalty signals are calculated by external circuits.
	www.freenetpages.co.uk /hp/tgclarkson/pram_a23.html (90 words)

	8-bit Gray code (Site not responding. Last check: 2007-10-13)
		The reason why a Gray code was used instead of a simple binary code is that the Gray code of adjacent integers differ by only 1 bit.
		The most remarkable difference between the unary code and the Gray code is that the former has no weights for the output neurons/bits that comprise the word, increasing the level of redundancy in the set of representations (i.e.
		The advantage of the Gray code is that it is more efficient in terms of usage of output neurons.
	www.cs.usu.edu /~degaris/papers/gp98/node7.html (210 words)

	Hydrogenaudio Forums -> Rice coding in FLAC
		Rice coding in FLAC, Unary codes, blurb alignment
		Say if you want to unary encode the integer 5, will you be encoding it as 11111 (five 1s) or as 000001 (five 0s followed by a 1) or in any other way?
		unary coding is prefix coding..there are several ways to construct something like
	www.hydrogenaudio.org /forums/index.php?showtopic=33280 (271 words)

	Data Compression
		The sources were presented in C and 65816 assembly language, the latter intended for use on an Apple IIgs computer.
		The C code was actually developed under SunOS, but was usable with either of the 16-bit compilers then available for the IIgs.
		For the full original lesson files, complete with source code and other goodies, you can download the full archive in ShrinkIt format.
	www.fadden.com /techmisc/hdc (306 words)

	ALCQ and ALCQO
		Unary coding of numbers is assumed throughout his thesis.
		Although a unique name assumption is made, it is not inherent to the utilised reduction since is explicitly enforced.
		-complete, if unary coding of numbers in cardinality and number restrictions is used.
	www.cs.cmu.edu /afs/cs/project/jair/pub/volume12/tobies00a-html/node10.html (167 words)

	[No title]
		When a table is embedded within another indent it one tab further so that it is clear of the rest.
		Brackets should be used when it makes code more legible as well as when neccessary.
		N.B. Good coding practice is to have as few globals as possible.
	www.yabbse.org /community/attachments/Coding_Guidelines_1-7-0.php.txt (365 words)

	data compression (Site not responding. Last check: 2007-10-13)
		This immediately leads to all the standard properties for canonical Huffman codes, including "the all-zeros code is the longest code", "the all-ones code is the shortest code", etc. In a few initial data files (for example, aabbeeee), letters are already in a power-of-2 frequency distribution, and the total file length is already a power-of-2.
		Fibonacci codes, rather than having a unary code of 0 bits that ends at the 1st 1 bit, instead has a more compact code that ends the first time it hits 2 consecutive 1 bits.
		http://www.ics.uci.edu/~dan/pubs/DC-Sec3.html#Sec_3.3 >3.3 Universal Codes and Representations of the Integers...
	edge.box.sk /projects/archives/papers/compression/data_compression.html (13373 words)

	USENIX ;login: - Java Performance
		We'll look at the Java source code for this compression algorithm and compare its performance to that of C++.
		One simple way of understanding why this coding algorithm works is to view the output values in two parts.
		The first part of the output is an "escape" or "overflow." If the distribution of numbers is mostly in a narrow range, then this type of coding is very efficient.
	www.usenix.org /publications/login/2000-4/features/java.html (904 words)

	[No title]
		Integer coding (5 points) Identify the set of all positive integers (show each integer using decimal, unary, and gamma coding) that: a.
		have smaller length using unary coding than using gamma coding.
		Assuming a Zipf's Law distribution of terms, as in class, what is the space required for the postings in an inverted index that encodes each docID with fixed-length binary codes (without the use of gaps or gamma encoding)?c.
	www.stanford.edu /class/cs276a/handouts/ps1.doc (1103 words)

	BVGraph (webgraph 1.4.1)
		Then each single integer is coded, using a coding that can be specified as an option; the integers that may be negative are first turned into natural numbers using
		Since this class is able to enumerate the links of a graph without using random access, it is possible not to load in memory any information at all, and obtain iterators that directly read from the graph file.
		is not specified (i.e., 0) the corresponding coding variable is left unchanged, making the assumption that it is the default value (this condition is anyway not checked for).
	webgraph.dsi.unimi.it /docs/it/unimi/dsi/webgraph/BVGraph.html (2937 words)

	[No title] (Site not responding. Last check: 2007-10-13)
		The arrangement of data into blocks may also be modified without restriction, provided that it is possible to determine which nodes are associated with a particular subtree and to navigate hierarchically between subtrees.
		The data structures described herein can be modified or varied; particular data contents and coding schemes described herein are illustrative and not limiting of the invention.
		Computer readable media encoded with the program code may be packaged with a device or provided separately from other devices (e.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=03/107323.031224&ELEMENT_SET=DECL (10502 words)

	Coding StandardsG2 - GeeklogWiki (Site not responding. Last check: 2007-10-13)
		The purpose of this document is to lay out a clear set of guidelines for developing code for the Geeklog 2 project.
		Code conventions improve the readability of the software, allowing engineers to understand new code more quickly and thoroughly.
		If you ship your source code as a product, you need to make sure it is as well packaged and clean as any other product you create.
	wiki.geeklog.net /index.php/Coding_StandardsG2 (3531 words)

	[No title]
		Name: "Hacking Data Compression" course Author: Andy McFadden Written: October 1992 - July 1993 Summary: 12-part course on data compression, with sample source code for the Apple IIgs Description: This is a 12-part course I did for the "Apple II University" on GEnie, back when GEnie was a major online service.
		The sample code is (usually) in both C and 65816 assembly.
		The C code should work on most platforms, and the explanations of compression theory and the algorithms should apply no matter what platform you're on.
	www.gno.org /pub/apple2/companies/mcfadden/hcomp.txt (250 words)

	Electronics Times: Unary mode drives speaker
		According to Dr Tony Hooley, co-founder and managing and technical director, the key to making a digital acoustic transducer system, which drives the DLS, is to encode the digital signals in unary mode (base 1) rather than binary (base 2), "which has been tried previously by others, but which does not work in practice.
		The loudspeaker works by converting incoming binary digital signals - for example from a CD - into unary digital code, performing interpolation and range shifting in the process (see schematic diagram).
		The end result is a very large number of independent digital signals, each of which is fed to its own small digital audio transducer.
	www.findarticles.com /p/articles/mi_m0WVI/is_1998_July_13/ai_50175768 (854 words)

	unary - OneLook Dictionary Search
		Tip: Click on the first link on a line below to go directly to a page where "unary" is defined.
		Example: "In a unary operation in a mathematical system one element is used to yield a single result"
		Phrases that include unary: unary operation, unary operator, unary coding, unary expression, unary function, more...
	www.onelook.com /cgi-bin/cgiwrap/bware/dofind.cgi?word=unary (149 words)

	Style Guide
		At some point, especially when there are lots of semantic actions attached to various points, the grammar tends to be quite difficult to follow.
		This coding style is adapted and extended from the ANTLR/PCCTS style (Terrence Parr) and Boost coding guidelines (David Abrahams and Nathan Myers) and is the combined work of Joel de Guzman, Chris Uzdavinis and Hartmut Kaiser.
		This makes the formatting more consistent and moves the rule 'body' at the same indentation level as the rule itself, highlighting the unary operator.
	www.boost.org /libs/spirit/doc/style_guide.html (358 words)

	Java Coding Standard
		Programmers who must modify your code at some point will use these comments to quickly understand the logic and operations performed.
		A comment for code appears on a line by itself preceding the code to which it refers.
		The indentation of your program code provides a strong visual indication of the structure of your methods.
	www.cs.rit.edu /~fyj/java-coding-standard.html (1444 words)

	CompressionFlags (MG4J 1.0.1)
		Flag: write positions in a document using arithmetic coding.
		Flag: write positions in a document using γ coding.
		Flag: write positions in a document using interpolative coding.
	mg4j.dsi.unimi.it /docs/it/unimi/dsi/mg4j/index/CompressionFlags.html (295 words)

	[No title]
		Although this article is mainly targeted at boost library authors, it may also be useful for users who want to understand why boost code is written in a particular way, or who want to write portable code themselves.
		The argument is the name of a member-variable, or a local variable (code may not compile with VC6).
		Since is_convertible is implemented in terms of the sizeof operator, it consistently gives the wrong value when used with the Metroworks compiler, and may not compile with the Borland's compiler (depending upon the template arguments used).
	www.boost.org /more/int_const_guidelines.htm (1229 words)

	generation5 - An In-Depth Look at Turing Machines
		Now, all that is needed is a scheme to code a TM on to the 'paper tape' for our UTM to read and subsequently simulate.
		There is no set way to code a Turing Machine (everything here is on a theoretical level), but a simple way to do it is by converting everything into a simple code, as follows:
		I should note though that using Penrose's more complex coding scheme the TM is merely the 177,642nd machine - which is quite a saving.
	www.generation5.org /content/2000/idturing.asp (899 words)

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