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Topic: Tokenizing


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In the News (Sat 28 Nov 09)

  
  Festival Speech Synthesis System - 15 Text analysis
Becuase the relationship between tokens and word in some cases is complex, a user function may be specified for translating tokens into words.
the tokens "1985" should be pronounced differently, the first as a year, "nineteen eighty five" while the second as a quantity "one thousand nine hundred and eighty five".
The basic method is to find all occurrences of a homographic token in a large text database, label each occurrence into classes, extract appropriate context features for these tokens and finally build an classification tree or decision list based on the extracted features.
www.speech.cs.cmu.edu /festival/manual-1.4.1/festival_15.html   (1396 words)

  
 Tokenization - Wikipedia, the free encyclopedia
In computer science, tokenization is the process of demarcating and possibly classifying sections of a string of input characters.
In human cognition tokenization is often used to refer to the process of converting a sensory stimulus into a cognitive "token" suitable for internal processing.
A stimulus that is not correctly tokenized may not be processed or may be incorrectly merged with other stimuli.
en.wikipedia.org /wiki/Tokenizing   (286 words)

  
 Tokenizing lines - PSPP   (Site not responding. Last check: 2007-10-21)
Equals signs are both delimiters between tokens and tokens in themselves.
Identifiers and strings are equivalent after tokenization, though they are written differently.
Tokens, outside of quoted strings, are delimited by white space or equals signs.
www.gnu.org /software/pspp/manual/html_node/Tokenizing-lines.html   (173 words)

  
 Motivation
Tokenization is a separate programming task (separate from reading input on the one hand, and parsing on the other hand).
A further disadvantage for integrating reading and tokenizing is that such an integrated approach must take extreme care that in the context of errors in the tokenizer the input channel is properly reset.
Not only do we argue for considering tokenization as a separate task, we also argue that there are good reasons to implement such a tokenizer by means of a specialized program which constructs such a tokenizer on the basis of a number of regular expressions.
odur.let.rug.nl /~vannoord/papers/elex_prolog/node1.html   (828 words)

  
 Elementary Language Processing: Tokenizing Text and Classifying Words   (Site not responding. Last check: 2007-10-21)
We further tokenize this into its component word tokens, and the result is stored as an attribute of the original token.
Tokenization may normalize the text, mapping all words to lowercase, expanding contractions, and possibly even stemming the words.
that tokenization based on whitespace is too simplistic for most applications; for instance, it fails to separate the last word of a phrase or sentence from punctuation characters, such as comma, period, exclamation mark and question mark.
nltk.sourceforge.net /tutorial/tokenization/nochunks.html   (5948 words)

  
 De Re Atari - Chapter 10
The token that ends up in the tokenized line is the variable number minus one; with the MSB set.
Thus the token of the first variable entered would be 80 Hex, the second would be 81, and so on up to FF for a total of 128 unique variable numbers.
When a colon is encountered, a 14 hex token is inserted in the output buffer and the offset from the start of the line is stored in the dummy byte that was reserved for the count to the start of the next statement.
www.atariarchives.org /dere/chapt10.php   (4494 words)

  
 SpamBayes: Background Reading
Tokenizing of headers is an area of much experimentation.
Training is the process of feeding known ham and spam into the tokenizer to generate the probabilities that the classifier then uses to generate it's decisions.
Before any change to the tokenizer or the algorithms was checked in, it was necessary to show that the change actually produced an improvement.
spambayes.sourceforge.net /background.html   (2095 words)

  
 Token (parser) - Wikipedia, the free encyclopedia
In computing, a token is a categorized block of text, usually consisting of indivisible characters known as lexemes.
This is assignment of meaning is known as tokenization.
Tokens are frequently defined by regular expressions, which are understood by a lexical analyzer such as lex.
en.wikipedia.org /wiki/Token_(parser)   (298 words)

  
 Java Tip 112: Improve tokenization of information-rich strings - Java World
It is a handy class that basically tokenizes (breaks) the input string based on a separator, and supplies the tokens upon request.
The third constructor won't work if a token itself is equal (in length and value) to the delimiter and is in a substring.
Since in some cases the delimiter is required as tokens (very rare cases) while in some it isn't, the tokenizer must supply the delimiter as a token upon request.
www.javaworld.com /javaworld/javatips/jw-javatip112.html   (737 words)

  
 CMSC 311 - Project #0
First, I think tokenizing is a useful skill everyone should have.
As each token is pulled out, if trimToken is true, call trim() on the token to remove leading and trailing blanks.
For delimiters that are not blanks, the number of tokens should be one more than the number of "real" delimiters.
www.cs.umd.edu /class/fall2002/cmsc311-0101/Proj/P0/proj0.token.html   (951 words)

  
 Stream Tokenizing   (Site not responding. Last check: 2007-10-21)
We have seen that when reading an input string supplied by a user we like to be able to analyse it token by token as demonstrated previously.
It would also ne nice to be able to process a file token by token, rather than a line at a time, should this be desirable.
A stream tokenizer takes an input stream and parses it into tokens, allowing the tokens to be read one at a time.
www.csc.liv.ac.uk /~frans/COMP101/AdditionalStuff/tokenizing2.html   (635 words)

  
 ETL Functions For Narrative Data Mart Population
Tokenizing is a process that divides up one or more narratives into distinct strings, or tokens, of characters, which are likely to have some meaning simply because of their occurrence in narrative form.
Computer programs can be very good at parsing text into tokens, given a relatively simple set of rules for recognizing contiguous characters, spaces, punctuation and “stop words”—words whose sole purpose is to connect other, more meaningful character strings together in a narrative.
Linguistic processing enables recognition of parts of speech, e.g., the token “John” has a high likelihood of being a proper noun; “walked,” a verb in the past tense.
b-eye-network.com /view/1238?jsessionid=af7ca00a74cc467154c27677a7d7...   (1510 words)

  
 RE: [xslt2 func/op] tokenizing "abba" to ("a","b","b","a") from Ashok ...
RE: [xslt2 func/op] tokenizing "abba" to ("a","b","b","a") from Ashok Malhotra on 2003-09-22 (public-qt-comments@w3.org from September 2003)
: Tobias Reif: "Re: [xslt2 func/op] tokenizing "abba" to ("a","b","b","a")"
: Kay, Michael: "RE: [xslt2 func/op] tokenizing "abba" to ("a","b","b","a")"
lists.w3.org /Archives/Public/public-qt-comments/2003Sep/0125.html   (317 words)

  
 Urban Dictionary: Token
Tokens are written for specially because everyone knows people who look different MUST act different.
His name is Token because he's the token fl guy.
The family who have just moved into Wisteria Lane in 'Desperate Housewives' are token fl people introduced by the makers to avoid complaints from people that they are (rightfully) representing upper class Americans as white.
www.urbandictionary.com /define.php?term=Token&defid=973082   (298 words)

  
 CA : Lexical Tokenization - Xerox XRCE
Lexical tokenization requires a tokenizing transducer to break a given text into a sequence of tokens.
A possibly non-deterministic tokenizer can be applied where several tokenization results are allowed for a given string.
The output will be tokenized, one token on a line.
www.xrce.xerox.com /competencies/content-analysis/fssoft/docs/tokenize-97/tokenize.html   (238 words)

  
 [Chapter 28] 28.2 Tokenizing Rules
Addresses are tokenized at another time (as we'll show later), but the process is the same for both.
Second, although the space character separates tokens, it is not itself a token.
After an address has passed through all the rules (and has been modified by rewriting), the tokens that form it are pasted back together to form a single string.
www.xs4all.nl /~sjoel/the-networking-cd-bookshelf/sendmail/ch28_02.htm   (542 words)

  
 Tech Tips: July 23, 1998
In Tech Tips: June 23, 1998, an example of string tokenization was presented, using the class java.util.StringTokenizer.
The class uses an internal table to control how tokens are parsed, and this syntax table can be modified to change the parsing rules.
That is, the only tokens that StreamTokenizer recognizes are sequences of upper and lower case letters.
java.sun.com /developer/TechTips/1998/tt0722.html   (661 words)

  
 Java IO Stream   (Site not responding. Last check: 2007-10-21)
In class we discussed that parsing actually consists of first scanning or tokenizing the string, and then parsing these tokens into an expression.
Tokenizing will be done by the CalcTokenizer, parsing by the CalcParser, and expression by the Expression itself.
It is useful to think of each of these tokens as being their own object type - or class in other words.
www.owlnet.rice.edu /~comp212/05-spring/labs/11   (1265 words)

  
 Tech Tips: June 23, 1998
Typically, white space (created by inserting spaces and tabs) is used to separate one token from the next.
In this example tokens are numeric values that represent fields of some type.
In the string tokenizing example above, a string is tokenized, and the tokens are retrieved and printed in turn.
java.sun.com /developer/TechTips/1998/tt0623.html   (630 words)

  
 Parsing of input
The input file may also contain `missing' tokens, that is, two consecutive commas or the trailing comma, within the arbitrary whitespace.
Such missing tokens are considered `symbols' whose string representation is the empty string.
The string token in the input stream should be a R5RS string datum: the string should be enclosed in double quotes and may contain (escaped) backslashes, escaped quotes, and other escaped characters as permitted by R5RS or the particular Scheme implementation.
okmij.org /ftp/Scheme/parsing.html   (2428 words)

  
 Boost Char Separator
We refer to delimiters that show up as output tokens as kept delimiters and delimiters that do now show up as output tokens as dropped delimiters.
We also specify that empty tokens should show up in the output when two delimiters are next to each other.
Whenever a delimiter is seen in the input sequence, the current token is finished, and a new token begins.
www.boost.org /libs/tokenizer/char_separator.htm   (531 words)

  
 [Tutor] Issues with tokenizing a string   (Site not responding. Last check: 2007-10-21)
On Thursday 21 August 2003 12:25, Vicki Stanfield wrote: > I am trying to tokenize a string and then test on the values of the > tokens, some of which might be empty.
The situation is such that I have to > retrieve data from a combobox dropdown and from a wxTextCtrl window if > populated with data.
I get a string like: > "1 F 4" > > I then try to tokenize the string with: > if arguments: > parameters=self.arguments.split(" ") > x=0 > while parameters != "": > outfile.write(parameters[x]) > print parameters[x] > x=x+1 > else: parameters = "" > for param in parameters: print param will catch each parameter.
mail.python.org /pipermail/tutor/2003-August/024863.html   (201 words)

  
 Rainbow
By default, rainbow tokenizes all alphabetic sequences of characters (that is characters in A-Z and a-z), changing each sequence to lowercase and tossing out any token which is on the "stoplist", a list of common words such as "the", "of", "is", etc.
This option is useful for tokenizing UseNet articles, because word statistics can be thrown off by repetitive tokens found in uuencoded images.
Rather than tokenizing the file directly, pass the file as standard input into this shell command, and tokenize the standard output of the shell command.
www-2.cs.cmu.edu /~mccallum/bow/rainbow   (2759 words)

  
 Everything Scheme - A blog on all things Scheme
To find the next token, one simply keeps reading until a non-delimeter is seen.
The token is then read char for char until a delimeter is seen.
This simplistic approach would work if it were not for identifiers beginning with hash-percent (#%), however it doesn't take much ingenuity to handle this too.
www.scheme.dk /blog/2006/04/tokenizing-scheme-source.html   (267 words)

  
 Tokenizing
Delimiter characters are a user-defined set of characters used to separate the tokens, or fields, in a string.
Note the use of the traditional empty token condition to detect the end of tokenization.
If the function call operator tokenizing interface had been used instead, the empty tokens would not be returned.
www.roguewave.com /support/docs/sourcepro/edition9/html/i18nug/7-3.html   (689 words)

  
 Tokenizing with Deterministic Finite State Automata
Note that 4,5, and 6 are final states, and the scanner assumes that any state with a transition on values k >= 256 are final states with the token id #k - 256.
Linefeeds serve to separate token definitions, but long definitions can be continued from one line to the next by ending the line with \.
The special ' production uses as the name of the token (after converting it to upper case), as well as the definition.
www.sfu.ca /~jpsember/tokenizer.html   (727 words)

  
 scale.dsl - The PEAK Developers' Center
But the tokens will be shifted to the left such that the first non-whitespace, non-comment token is in the first column of the output:
Notice also that any comments occurring before the first non-whitespace token in the token stream are formatted flush left to the indent column, regardless of their position in the input.
Many parsing operations need to split a sequence of tokens into subsequences based on the presence of a particular token.
peak.telecommunity.com /DevCenter/scale.dsl   (1583 words)

  
 Overview of File Translation (C/C++ Languages)
Character mapping and trigraph processing, line splicing, and tokenizing are performed in this translation phase.
This translation phase brings in ancillary source files referenced by #include directives, handles "stringizing" and "charizing" directives, and performs token pasting and macro expansion (see Preprocessor Directives in the Preprocessor Reference for more information).
This translation phase uses the tokens generated in the preprocessing phase to generate object code.
msdn.microsoft.com /library/en-us/vclang/html/_pluslang_Overview_of_File_Translation.asp?frame=true   (304 words)

  
 Signs on the Sand: Tokenizing in XSLT
So, XSLT perfectly able to handle this, it just needs tokenizing facility, like C# has and what for producing XML - IMO XSLT is the best hammer on the market.
I agree though that for pure CSV2XML conversion XSLT may be not a right tool, if it was my project, I'd make use of SAX filter or something like Chris Lovett's XmlCsvReader.
A variety of problems have been solved using this functional tokenizer -- just have a look in xsl-list.
www.tkachenko.com /blog/archives/000014.html   (361 words)

  
 Tokenizing an Arabic Script Language (ResearchIndex)   (Site not responding. Last check: 2007-10-21)
Abstract: In any natural language processing project, the input text needs to undergo tokenization before morphological analysis or parsing.
For Arabic script languages the tokenization process faces more problems and it plays a more crucial role in natural language processing (NLP) systems for Arabic script languages.
The research is based on a project for tokenization and parsing Persian, Arabic and Kurdish...
citeseer.ist.psu.edu /rezaei01tokenizing.html   (296 words)

  
 CodeGuru Forums - String Tokenizing   (Site not responding. Last check: 2007-10-21)
I tokenize the buffer to count the words, but I need to check every token to make sure it is not a number so it isn't included in the word count.
Yes, I know, but I cannot think of any other way to check if each token is a number.
Afterwards, I rescan the entire copied buffer, tokenizing it based on spaces, pushing each token onto a vector.
www.codeguru.com /forum/showthread.php?t=404637   (817 words)

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