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Encoding which maps information to a variable number of bits
In coding theory, variable-length encoding is a symbol encoding scheme in which codes of differing lengths are used to encode symbols for representation
Variable-length_encoding
Encoding method for variable-length integers
data. More general variable-length codes typically require much more bit-oriented manipulation for encoding and decoding. The encoding assumes an octet
Variable-length_integer
System of East Asian character encodings
character encoding system used primarily for Japanese, Korean, and simplified Chinese (characters). The most commonly used EUC codes are variable-length encodings
Extended_Unix_Code
Coding technique in communication technology
to a rate-1 code. The encoding is very similar to the FM encoding. Where "x" is the complement of the stream's previously encoded bit. Except for the clock
Run-length_limited
Using numbers to represent text characters
fixed per-character length or variable-length sequences of fixed-length codes (e.g. Unicode). Common examples of character encoding systems include Morse
Character_encoding
Computer instruction set architecture
Instructions up to version 3.0 have a length of 32 bits, with the exception of the VLE (variable-length encoding) subset that provides for higher code
Power_ISA
Efficient variable-length integer encoding
format and the WebAssembly binary encoding for all integer literals. LEB128 format is very similar to the variable-length quantity (VLQ) format used in MIDI
LEB128
Data format used in communication protocols
communication protocols, TLV (type-length-value or tag-length-value) is an encoding scheme used for informational elements. A TLV-encoded data stream contains code
Type–length–value
System of rules to convert information into another form or representation
storage or transmission. A character encoding describes how character-based data (text) is encoded. Antiquated encoding systems used a fixed number of bits
Code
Model that describes the programmable interface of a computer processor
have variable length, typically integral multiples of a byte or a halfword. Some, such as the ARM with Thumb-extension have mixed variable encoding, that
Instruction_set_architecture
Technique to compress data
The output from Huffman's algorithm can be viewed as a variable-length code table for encoding a source symbol (such as a character in a file). The algorithm
Huffman_coding
Method for IP address allocation and routing
CIDR is based on variable-length subnet masking (VLSM), in which network prefixes have variable length as opposed to the fixed-length prefixing of the
Classless Inter-Domain Routing
Classless_Inter-Domain_Routing
Data interface description language
her own customized encoding rules. Privacy-Enhanced Mail (PEM) encoding is entirely unrelated to ASN.1 and its codecs, but encoded ASN.1 data, which is
ASN.1
Topics referred to by the same term
aviation Variable-length encoding, an information theory technique for assigning shorter encoding to more frequently-occurring sequences Variable-length encoding
VLE
Base memory unit handled by a computer
of the architecture. Character size was in the past (pre-variable-sized character encoding) one of the influences on unit of address resolution and the
Word_(computer_architecture)
ASCII-compatible variable-width encoding of Unicode
alternative text encoding. UTF-8 is dominant for all countries/languages on the internet, is used in most standards, often the only allowed encoding, and is supported
UTF-8
Encoding Unicode characters as 4 bytes per code point
Transformation Format), sometimes called UCS-4, is a fixed-length encoding used to encode Unicode code points that uses exactly 32 bits (four bytes) per
UTF-32
Variable-width encoding of Unicode, using one or two 16-bit code units
a character encoding that supports all 1,112,064 valid code points of Unicode. The encoding is variable-length as code points are encoded with one or
UTF-16
Assembly languages for the RISC-V computer architecture
registers and floating-point registers. RISC-V instructions use variable-length encoding. Extensions: atomic instructions single-precision floating-point
RISC-V_assembly_language
Encoding for Unicode domain names
Punycode encoding, using as an example the German string "bücher" (English: books), which is translated into the label "bcher-kva". To make the encoding and
Punycode
Characters in shared East Asian written tradition
character encodings, requiring at least a 16-bit fixed width encoding or multi-byte variable-length encodings. The 16-bit fixed width encodings, such as
CJK_characters
explanation needed] (see "Seven-bit environments" below). Text with variable-length encoding such as UTF-8 or UTF-16 is harder to process if there is a need
Comparison of Unicode encodings
Comparison_of_Unicode_encodings
Sequence of characters, data type
a literal constant or as some kind of variable. The latter may allow its elements to be mutated and the length changed, or it may be fixed (after creation)
String_(computer_science)
Garbled text as a result of incorrect character encodings
one encoding, when the same binary code constitutes one symbol in the other encoding. This is either because of differing constant length encoding (as
Mojibake
Context-adaptive variable-length coding (CAVLC) is a form of entropy coding used in H.264/MPEG-4 AVC video encoding. It is an inherently lossless compression
Context-adaptive variable-length coding
Context-adaptive_variable-length_coding
26 letters in two cases broadly used in international communication
telecommunications industries in the First World that a non-proprietary method of encoding characters was needed. The International Organization for Standardization
ISO_basic_Latin_alphabet
Processor with instructions capable of multi-step operations
operate at the same time. In a more modern context, the complex variable-length encoding used by some of the typical CISC architectures makes it complicated
Complex instruction set computer
Complex_instruction_set_computer
Character encoding standard
for American Standard Code for Information Interchange, is a character encoding standard for representing a particular set of 95 (English-language–focused)
ASCII
Authenticated encryption mode for block ciphers
MAC construction, the length of the associated data has a variable-length encoding, which can be shorter than machine word size. This can cause pessimistic
CCM_mode
Set of codewords, none a prefix of another
'_{i}p(A_{i})}\!} . Examples of prefix codes include: variable-length Huffman codes telephone country codes Chen–Ho encoding the country and publisher parts of ISBNs
Prefix_code
Processor executing one instruction in minimal clock cycles
such as SuperH (1992), ARM thumb (1994), MIPS16e (2004), Power Variable Length Encoding ISA (2006), RISC-V, and the Adapteva Epiphany, have an optional
Reduced instruction set computer
Reduced_instruction_set_computer
Windows Bitmap image file format family
the basis of the modern BMP file format. The release also added run-length encoding for 4- and 8-bit-per-pixel (bpp) images (BI_RLE4 and BI_RLE8), and
BMP_file_format
Lossless data compression method
Rice–Golomb encoding, where the remainder code uses simple truncated binary encoding, also named "Rice coding" (other varying-length binary encodings, like
Golomb_coding
Lossless, but memory-consuming, data compression algorithm
be encoded efficiently. One of the simplest methods for encoding the grammar is the implicit encoding, which consists on invoking function encodeCFG(X)
Re-Pair
Representation of binary data as text
A binary-to-text encoding is a data encoding scheme that represents binary data as plain text. Generally, the binary data consists of a sequence of arbitrary
Binary-to-text_encoding
Truncated binary encoding is an entropy encoding typically used for uniform probability distributions with a finite alphabet. It is parameterized by an
Truncated_binary_encoding
Standard barcode system used in global trade
components: GS1 prefix – 3 digits Manufacturer code – variable length Product code – variable length Check digit The first three digits of the EAN-13 (GS1
International_Article_Number
number (0-9); encoding density moderate: barcode length on 11% longer than Interleaved 2 of 5 symbology and on 82% than Code 128; variable length of symbol;
Matrix_2_of_5
Universal lossless data compression algorithm
further encoding to the sequence of output symbols. Some package the coded stream as printable characters using some form of binary-to-text encoding. This
Lempel–Ziv–Welch
number (0-9); encoding density low: barcode length on 50% longer than Interleaved 2 of 5 symbology and on 172% than Code 128; variable length of symbol;
Industrial_2_of_5
ISO standard
though the introduction of ISO/IEC 8859-9 superseded it for Turkish. The encoding was popular for users of Esperanto, but fell out of use as application
ISO/IEC_8859-3
South Korean character set
all Hangul syllables using modern jamo. Wansung is technically a variable-length encoding, allowing other syllables to be represented with eight-byte sequences
KS_X_1001
Character encodings standard
declare use of ISO-8859-9. However, the WHATWG Encoding Standard, which specifies the character encodings which are permitted in HTML5 and which compliant
ISO/IEC_8859-9
ASCII-based standard character encoding
8859 series of ASCII-based standard character encodings, first edition published in 2001. The same encoding was defined as Romanian Standard SR 14111 in
ISO/IEC_8859-16
Media encoding that sends a constant amount of information per unit time
Most coding schemes such as Huffman coding or run-length encoding produce variable-length codes, making perfect CBR difficult to achieve. This is partly
Constant_bitrate
International standard
Anne. "9. Legacy single-byte encodings". Encoding Standard. WHATWG. Note: ISO-8859-8 and ISO-8859-8-I are distinct encoding names, because ISO-8859-8 has
ISO/IEC_8859-8
Establishes the limits to possible data compression
theorem shows that, in the limit, as the length of a stream of independent and identically-distributed random variable (i.i.d.) data tends to infinity, it
Shannon's source coding theorem
Shannon's_source_coding_theorem
Data compression preprocess technique
duplicate targets and more efficiently encode them. On decompression, the inverse filter restores the original encoding. Different BCJ filters are used for
BCJ_(algorithm)
Higher-level 7-bit and 8-bit character encoding system
language-specific double-byte encodings or variable-width encodings; some of these (such as the Simplified Chinese encoding GB 2312) conform to ISO 2022
ISO/IEC_2022
Image encoding for fax machines
we first use run-length encoding, we can have more objects to encode. Here is an example taken from the article on run-length encoding: A hypothetical
Modified_Huffman_coding
Thai character encoding, based on ASCII
is part of the ISO/IEC 8859 series of ASCII-based standard character encodings, first edition published in 2001. It is informally referred to as Latin/Thai
ISO/IEC_8859-11
Electronic communications protocol
trading. Tagvalue encoding was deemed no longer fit-for-purpose since it is character based rather than binary and its variable-length fields and messages
Financial Information eXchange
Financial_Information_eXchange
very simple fixed encoding length, and other have variable-length. Usually it is RISC architectures that have fixed encoding length and CISC architectures
Comparison of instruction set architectures
Comparison_of_instruction_set_architectures
Classical quantization technique from signal processing
discrete value in the same step, by generating a prefix coded variable-length encoded value as its output. The set of discrete amplitude levels is quantized
Vector_quantization
Variable length, discrete barcode symbology
Alpha39, Code 3 of 9, Code 3/9, Type 39, USS Code 39, or USD-3) is a variable length, discrete barcode symbology defined in ISO/IEC 16388:2023. The Code
Code_39
Data serialization format
indefinite encoding, the parser must pair the break markers with the corresponding indefinite-length header bytes. Type 5 is similar but encodes a map (also
CBOR
Standart data serialization format
order; smaller data types still occupy four bytes each after encoding. Variable-length types such as string and opaque are padded to a total divisible
External_Data_Representation
Lossless compression algorithm
of: A 16-bit big-endian value encoding the low 16 bits of the uncompressed size minus one A 16-bit big-endian value encoding the compressed size minus one
LZMA
Data compression algorithms
within 1 bit of optimal. Fano's method usually produces encoding with shorter expected lengths than Shannon's method. However, Shannon's method is easier
Shannon–Fano_coding
Lossless data compression algorithms
incorporate a flexible and easy form of run-length encoding. Another way to see things is as follows: While encoding, for the search pointer to continue finding
LZ77_and_LZ78
Identifier for trade items
barcode, UPC-E, encodes a GTIN-12 with a special Company Prefix that allows for "zero suppression" of four zeros in the GTIN-12. The GS1 encoding and decoding
Global_Trade_Item_Number
Software of personal information manager type
allowed for variable-length formatting. Therefore NT 3.51 will reveal its shortcomings for those cardfile cards containing variable-length encoded characters
Cardfile
Symbol representing a mathematical object
that the variable represents or denotes the object, and that any valid candidate for the object is the value of the variable. The values a variable can take
Variable_(mathematics)
Entropy coding method
most other entropy encoding algorithms used in video encoding, and it is one of the key elements that provides the H.264/AVC encoding scheme with better
Context-adaptive binary arithmetic coding
Context-adaptive_binary_arithmetic_coding
Universal coding
Levenshtein coding is a universal code encoding the non-negative integers developed by Vladimir Levenshtein. The code of zero is "0"; to code a positive
Levenshtein_coding
Simple audio file format
format now supports many audio encoding formats, it remains associated with the μ-law logarithmic encoding. This encoding was native to the SPARCstation
Au_file_format
Universal code encoding positive integers
Return to Step 2 to prepend the encoding of the new N. To decode an Elias omega-encoded positive integer: Start with a variable N, set to a value of 1. If
Elias_omega_coding
Process of determining content's charset
Character encoding detection, charset detection, or code page detection is the process of heuristically guessing the character encoding of a series of
Charset_detection
Universal encoding scheme for positive integers
Elias delta (δ) coding – Universal code encoding positive integers Elias omega (ω) coding – Universal code encoding positive integers Posit (number format) –
Elias_gamma_coding
needs. Morse code is a variable-length telegraphy code, which traditionally uses a series of long and short pulses to encode characters. It relies on
List_of_binary_codes
Open source API for video acceleration
acceleration H.264 AVC encode acceleration Main Profile H.264 AVC decode acceleration High Profile H.264 / AVC Hardware Variable Length Decoding (VLD) - CABAC
Video_Acceleration_API
Standardized representation of a Huffman code
In standard Huffman coding this model takes the form of a tree of variable-length codes, with the most frequent symbols located at the top of the structure
Canonical_Huffman_code
Industrial standard for programmable logic controllers
UCHAR – Single character encoded according to UTF-8 USTRING - Variable-length character string in which each character is encoded according to UTF-8 Only
IEC_61131-3
Modeling language for describing general text and binary data
<xs:annotation><xs:appinfo source="http://www.ogf.org/dfdl/"> <dfdl:element lengthKind="delimited" encoding="ASCII"/> </xs:appinfo></xs:annotation> </xs:element> <xs:element
Data Format Description Language
Data_Format_Description_Language
Password-based key derivation function
rounds) R9h/cIPz0gi.URNNX3kh2O: A base-64 encoding of the input salt PST9/PgBkqquzi.Ss7KIUgO2t0jWMUW: A base-64 encoding of the first 23 bytes of the computed
Bcrypt
Obsolete character code standard developed by Xerox Corporation
character encoding that was created by Xerox in 1980 for the exchange of information between elements of the Xerox Network Systems Architecture. It encodes the
Xerox_Character_Code_Standard
Algorithm for modelling sequential data
man". The positional encoding is defined as a function of type f:ℝ→ℝd, where d is a positive even integer. The full positional encoding defined in the original
Transformer_(deep_learning)
Multi-platform general-purpose programming language designed by Thomas Mertez in 2005
runtime library. UTF-32 Unicode support. This avoids problems of variable-length encodings like UTF-8 and UTF-16. The Seed7 project includes both an interpreter
Seed7
example of a string function is the length(string) function. This function returns the length of a string literal. e.g. length("hello world") would return 11
Comparison of programming languages (string functions)
Comparison_of_programming_languages_(string_functions)
Type of artificial intelligence system
dimension. Standard positional encoding is poorly suited for vision data, especially when the data is encoded into variable-length token embeddings. Specifically
Vision-language_model
Representation of data of various types in lambda calculus
encoding. But tail is immediately available, and so its definition is much simpler here, in comparison. See Scott encoding for more. Scott encoding can
Church_encoding
Type of two-dimensional barcode
70 65 64 69 61 2E 6F 72 67] The encoding mode is "Byte encoding". Hence the 'Enc' field is [0100] (4 bits). The length of the above message is 17 bytes;
QR_code
1960s decimal computer
adjacent variable-length fields can make up a variable-length record. A variable-length record is addressed at its high-order position, its length defined
IBM_1401
Computer architecture to aid parallelism
earlier generation would not run on the wider implementations, as the encoding of binary instructions depended on the number of execution units of the
Very_long_instruction_word
Computer file containing plain text
software, when opening files of unknown encoding, is to try UTF-8 first and fall back to a locale dependent legacy encoding when it definitely is not UTF-8.
Text_file
Neural network that learns efficient data encoding in an unsupervised manner
functions: an encoding function that transforms the input data, and a decoding function that recreates the input data from the encoded representation
Autoencoder
Executable Java file format
unsigned 32-bit integer in big-endian byte order table: an array of variable-length items of some type. The number of items in the table is identified
Java_class_file
audio encoding and decoding is accelerated in hardware. iDCT Motion compensation Discrete cosine transform (DCT) Quantization Variable-length code Information
Codec_acceleration
Mapping arbitrary data to fixed-size values
fixed-size values, though there are some hash functions that support variable-length output. The values returned by a hash function are called hash values
Hash_function
Interpreter that enables users to enter and run programs in the BASIC language
sequential line (two bytes) Length of ASCII source statement (one byte) ASCII source statement (variable length) The maximum length of a line varied: 64 characters
BASIC_interpreter
Linear variable differential transformer (LVDT) Photodiode array Piezo-electric transducer Position encoders: Absolute encoder Incremental encoder Linear
Position_sensor
Character encoding
UTF-7 (7-bit Unicode Transformation Format) is an obsolete variable-length character encoding for representing Unicode text using a stream of ASCII characters
UTF-7
Lossless data compression algorithm
offset/length reference is encoded as a '1' bit followed by the encoded offset, followed by the encoded length. One exceptional encoding is an end marker, described
Lempel–Ziv–Stac
Character encoding standard
effectively disseminating such encoding in high-level coded software. Punycode, another encoding form, enables the encoding of Unicode strings into the limited
Unicode
ITU-T Recommendation
of this standard (plus control codes). But in practice this character encoding is unused on the Internet.[citation needed] The primary set (first half)
T.51/ISO/IEC_6937
Type of matrix barcode
more suitable for English text encoding or GS1 Application Identifiers data encoding. Additionally, Han Xin code can encode Unicode characters from other
Han_Xin_code
One of the character encodings used to transmit information by telegraphy
handled without having to change the character encoding. Modern computers can easily handle variable-length codes such as UTF-8 and UTF-16 which have now
Telegraph_code
Lossless data compression software
following Python code implements functions to encode and decode a variable-length integer. def encode(num): if num >= 2**63: raise ValueError("num must
XZ_Utils
Video codec by Apple Inc
as an encoder and decoder in libavcodec. QuickTime Animation uses run-length encoding and conditional replenishment for compression. When encoding, the
QuickTime_Animation
Fast 8-bit hash function
h := T[ h xor c ] end loop return h The hash variable (h) may be initialized differently, e.g. to the length of the data (C) modulo 256. public class PearsonHashing
Pearson_hashing
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VARIABLE LENGTH-ENCODING
VARIABLE LENGTH-ENCODING
VARIABLE LENGTH-ENCODING
VARIABLE LENGTH-ENCODING
VARIABLE LENGTH-ENCODING
VARIABLE LENGTH-ENCODING
VARIABLE LENGTH-ENCODING
VARIABLE LENGTH-ENCODING
VARIABLE LENGTH-ENCODING
travel, tourism, insurance