Copy Code code as follows:
var chunker =/((?: \ ((?:\ ([^()]+\)| [^()]+)+\)|\[(?:\ [[^[\]]*\]| ['"] [^'"]*['"]| [^[\]'"]+)+\]|\\.| [^ >+~, (\[\\]+) +| [>+~]) (\s*,\s*)? ((?:.| \r|\n) *)/g,
This is the longest in the JQ, also studied for a long time, has been very ignorant, feeling or through debugging, and then step-by-step analysis of the value of a relatively easy to understand,
I try to make the graphic more intuitive, with different c
rows: If the parameter context is not an element and is not a document object, it is returned directly [];3977 rows: If the argument selector is an empty string, or is not a string, the results is returned directly.M: used to store the result of the regular chunker each match selector expression selector.set: Right-to-left lookup mode, the variable set becomes the "candidate set", the last block expression matches the element collection, the other bl
Currently, we have discussed the following splitters: Regular Expression splitters and n-gram splitters, which determine which parts are created based entirely on part-of-speech tags. However, sometimes part-of-speech tagging is insufficient to determine how a sentence should be segmented.
For example:
(3) a. Joey/NNsold/VBD the/DT farmer/NN rice/NN .//NNbroke/VBD my/DTcomputer/NNmonitor/NN./.
Although the tags are the same, the parts are obviously different.
Therefore, we need to use the word
/mfs # uninstall the MooseFS File System on the client# Mfschunkserver stop # stop the chunk server process# Mfsmetalogger stop # stop the metalogger Process# Mfsmaster stop # stop the master server processStart the MooseFS cluster safely:# Mfsmaster start # start the master Process# Mfschunkserver start # start the chunkserver Process# Mfsmetalogger start # start the metalogger Process# Mfsmount # mount the MooseFS File System on the clientIn fact, no exception is found no matter how it is star
. Block read, a total of 8 rows of data in the data1.txt, according to each block of 3 lines, will read 3 times, the first 3 lines, the second 3 rows, the third 1 rows of data to read.Note that this is different from the skip when it comes to chunking, the table header is not read as the first line, and can be understood by a comparison of two examples.Chunker = pd.read_csv (' c:\\users\\xiaoxiaodexiao\\pythonlianxi\\test0424\\data1.txt ', chunksize=3) for M in
be very difficult to store. In view of the fact that we use the data, we do not need to extract all the data out of memory. Of course, reading into the database is a wiser approach. If you don't use the database. You can split large files into small chunks and read them in chunks, which reduces memory storage and computing resource considerations: Open (File.csv) and Pandas package Pd.read_csv (file.csv): python32 bit words will limit memory, Indicates that the data is too large to cause a memo
Main processes and regular expressions are segmented
var chunker = /((?:\((?:\([^()]+\)|[^()]+)+\)|\[(?:\[[^[\]]*\]|['"][^'"]*['"]|[^[\]'"]+)+\]|\\.|[^ >+~,(\[\\]+)+|[>+~])(\s*,\s*)?((?:.|\r|\n)*)/g;
This regular expression is long and mainly used for segmentation and one-step preprocessing.
1,
2,
3,
4,
'div#test + p > a.tab' --> ['div#test','+','p','>','a.tab']Extract the corresponding type from the expression:
According to the jquery selector
, contextXML = Sizzle. isXML (context), parts = [], soFar = selector; // Reset the position of the chunker regexp (start from head) // you can specify a parallel expression, the end is now. Save the remaining parallel expressions in extra. // For example, # info. p, div. red> ado export chunker.exe c (""); m = chunker.exe c (soFar); if (m) {soFar = m [3]; parts. push (m [1]);/ /Based on the preceding chunker
Sizzle the overall structure of Sizzle 4.1
If (document. querySelectorAll) {sizzle = function (query, context) {return makeArray (context. querySelectorAll (query) ;}} else {sizzle engine implementation, mainly simulating querySelectorAll}
The code above shows that the Sizzle selector engine is compatible with querySelectorAll APIs. If all browsers support this API, there is no need for Sizzle.
Key functions:
Sizzle = function (selector, context, result, seed): entry function of the Sizzle En
. isXML (context), parts = [], soFar = selector; // Reset the position of the chunker regexp (start from head) // you can specify a parallel expression, the end is now. Save the remaining parallel expressions in extra. // For example, # info. p, div. red> ado export chunker.exe c (""); m = chunker.exe c (soFar); if (m) {soFar = m [3]; parts. push (m [1]);/ /Based on the preceding chunker regular expression,
When I learned the section "training classifier-based splitters", I encountered a problem after testing the code.
= tagged_sent == i, (word, tag) == nltk.MaxentClassifier.train(train_set, algorithm=, trace== i, word == zip(sentence, history)
= [[((w,t),c) (w,t,c) sent ===[(w,t,c) ((w,t),c) nltk.chunk.conlltags2tree(conlltags)
= {>>>chunker =>>> chunker.evaluate(test_sents)
The above is the Code provided in the book. The problem is that when you
PerfMon = new PerformanceMonitor (System.err, "sent");//Display load time postaggerme tagger = new Postaggerme ( Model);objectstreamOperation Result:6 detailsDescription: the text block is divided by the word syntax related parts, such as the noun base, verb-based text, but does not specify its internal structure, nor its role in the main sentence.API: This generalization provides an API to nurture new generalized patterns. The following sample code demonstrates how to do this:Code implementati
group of elements are returned. If the string is "# aaa", you can simply cut down the previous "#" and use getElementsById to find it! If "p span" means to retrieve the span element of all p elements, we first use document. getElementsByTagName ("p") obtains all p elements, traverses p in it, and uses currentP. getElementsByTagName ("span. But this is the ideal situation. How can we call these Apis? # Remind us to use the IE selector, but if # is contained in quotation marks, such as p ["gh # e
= selector;//Reset The position of the Chunker Reg Exp (start from head)//split fast expression, for the parallel expression encountered, the temporary end, the remaining parallel expression stored in the extra//as #info. p,div.red > ADO {chunker.exec (""); m = Chu Nker.exec (SOFAR); if (m) {Sofar = m[3];p arts.push (m[1]);//According to the above Chunker regular, if there is a parallel expression, then af
:--------------------------------------------------------------------------------$ Mkdir/home/phpdoc$ CD/home/phpdoc$ Wget "http://prdownloads.sourceforge.net/openjade/openjade-1.3.2.tar.gz"$ Wget "http://prdownloads.sourceforge.net/openjade/OpenSP-1.5.1.tar.gz"$ Tar-zxvf * .tar.gz$ Openjade-1.3.2 CD$./Configure$ Make$ Make install$ CD ../OpenSP-1.5.1$./Configure$ Make$ Make install$ CD ../--------------------------------------------------------------------------------
Then, we will obtain th
From: http://www.cnblogs.com/nuysoft/archive/2011/11/14/2248023.html
Jquery1.6.1 source code analysis series (Continuous updates)
Author: nuysoft/high cloud QQ: 47214707 Email: nuysoft@gmail.comDisclaimer: This article is an original article. If you need to reprint it, please indicate the source and retain the original article link.
Jquery source code analysis (version 1.6.1)
00 preface kaiguang
01 overall architecture
02 regular expression-Regexp-common Regular Expression
03 construct jquery
$ Cd ../
--------------------------------------------------------------------------------
Then, we will obtain the latest phpdoc version from the official php cvs server.
Code :--------------------------------------------------------------------------------
$ Export CVSROOT =: pserver: cvsread@cvs.php.net:/repository
$ Cvs-z9 checkout phpdoc
$ Cd phpdoc
$ Cvs update-dP-D "December 31,200 2 pm" xsl
$ Cvs up-A xsl/version. xml xsl/docbook/html/
metadata mirroringChangelog.*.mfs : is the moosefs file system metadata change log ( merged into Metadata.mfs once every one hours )The size of the Metadata file is dependent on the number of files ( not their size ). the size of the changelog log depends on the number of operations per hour , But the length of time ( By default, by the hour ) is configurable. to modify the limitations of the maximum file descriptor under Linux :when a large number of small files are written , a serious er
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.