scikit learn examples

 Text mining paper did not find a unified benchmark, had to run their own procedures, passing through the predecessors if you know 20newsgroups or other useful public data set classification (preferably all class classification results, All or take part of the feature does not matter) trouble message to inform now benchmark, million Xie. Well, say the text. The 20newsgroups website gives 3 datasets, here we use the most primitive 20news-19997.tar.gz. It is divided into the following proce

Because of the recent intention to learn "machine learning combat" this book, so using Python may be used NumPy, matplotlib, scikit-learn These libraries, so the Internet to find how to install these libraries, look at a number of methods, after trying to find themselves very lucky, Soon it's done, and it's not complicated. Let's get down to business! 1, to th

of higher-order polynomial curve, but this method of fitting can better obtain the development trend of data. In contrast to the over-fitting phenomenon of high-order polynomial curves, for low-order curves, there is no good description of the data, which leads to the case of less-fitting. So in order to better describe the characteristics of the data, using the 2-order curve to fit the data to avoid the occurrence of overfitting and under-fitting phenomenon.Training and testingWe trained to ge

']X_new_counts =count_vect.transform (docs_new) x_new_tfidf=tfidf_transformer.fit_transform (X_new_ Counts) predicted=clf.predict (X_NEW_TFIDF) fordoc,categoryinzip (Docs_new, predicted):print '%r=>%s ' % (doc,twenty_train.target_ Names[category]Categorize 2,257 of documents in Fetch_20newsgroups Count the occurrences of each word With TF-IDF statistics, TF is the number of occurrences of each word in a document divided by the total number of words in the document, IDF is the total

data.X = [[1.,-1., 2.], [2., 0., 0.], [0.,1.,-1.]] Binarizer= preprocessing. Binarizer (). Fit (X)#The default threshold value is 0.0PrintBinarizer#Binarizer (copy=true, threshold=0.0)Printbinarizer.transform (X)#[1.0. 1.]#[1.0. 0.]#[0.1. 0.]Binarizer= preprocessing. Binarizer (threshold=1.1)#set the threshold value to 1.1Printbinarizer.transform (X)#[0.0. 1.]#[1.0. 0.]#[0.0. 0.]4. Label preprocessing (label preprocessing)4.1) Label binary value (label binarization)Labelbinarizer is typica

classifier:Articles that need to be categorized are placed in the Predict_data directory: still an article a TXT file#-*-coding:utf-8-*-# @Time: ./8/ at -: Geneva# @Author: Ouch # @Site: # @File: Bayesian classifier. py# @Software: Pycharm import reimport jiebaimport json fromsklearn.datasets Import Load_files fromsklearn.feature_extraction.text import Countvectorizer, Tfidftransformer fromsklearn.externals Import joblib # load classifier CLF= Joblib.load ('MODEL.PKL') Count_vect= Joblib.load

regression or nonlinear regression, is not as rich as the information contained in the model tree, so the model tree has higher prediction accuracy. Scikit-learn Implementation #!/usr/bin/python # Created by Lixin 20161118 import numpy as NP- numpy import * from sklearn.tree imp ORT decisiontreeregressor import Matplotlib.pyplot as PLT def plotfigure (X,X_TEST,Y,YP): plt.figure () Plt.sca

GRIDSEARCHCV function to automatically find the optimal alpha value: From Sklearn.grid_search import GRIDSEARCHCV GSCV = GRIDSEARCHCV (Model (), Dict (Alpha=alphas), cv=3). Fit (X, y) Scikit-learn also provides an inline CV model, such as From Sklearn.linear_model import Ridgecv, LASSOCV Model = RIDGECV (Alphas=alphas, cv=3). Fit (X, y)This method can get the same result as GRIDSEARCHCV, but if it

Source: http://www.cppblog.com/Leaf/archive/2009/05/16/83145.html It is said that the author of this article is ogdev's hack master. Use examples to learn about Lua (1) ---- Hello World 1. PrefaceThe scripting language is indispensable in the game. Lua is a very closely-integrated scripting language with C/C ++, with extremely high efficiency.Generally, C ++ is used to write the time requirements,

, The Curve editor and so on are all graphview.Now you should be able to understand why I said that the topology diagram component can make almost any other component, and of course it takes time and effort cost to customize other components, otherwise there is no need for other components to exist, and the development of Qici Engine products is another story that is not started today. HTML5 game is not a new thing, but the game development tool is entirely based on HTML5 can run in the browser

　　Girlfriend is not learning computer, but now engaged in computer industry, do technical support, she wants to learn programming, so I intend to teach her a little, accumulate, take her to learn programming, if other beginners interested, can follow the study.In order to introduce the table simple, vivid, with actual combat, I spent 3.5 hours, wrote 5 columns, the table some of the key knowledge to speak,

This series of articles is an online prolog learning material: Www.learnprolognow.org's Chinese translation. Hope to be able to translate this learning materials, to achieve two purposes: first, the system to learn prolog knowledge; second, improve the understanding of English articlesand translation capabilities.Content Summary:Give some simple examples of Prolog programming;The basic structure of Prolog:

? Learn how to use regular expressions in ASP through several practical examples We know that regular expressions are supported in VBScript 5.0. Below we use several common application examples to help usUnderstand and use thisProgramWriting format1 first, password verification our password verification rules are: the first letter of the password cannot be a nu

Through the shell example to learn the syntax of the loop structure: the so-called useful is to learn to use it all the time. it is useless if you forget it. On the other hand, it is very likely that the leaders have great expectations for you. So what we learn should be used frequently in practice... information n use shell

Renderer.setapplybackgroundcolor (true); Renderer.setbackgroundcolor (Color.gray); //Set the color of each column simpleseriesrenderer sr = new Simpleseriesrenderer (); Sr.setcolor (Color.yellow); Renderer.addseriesrenderer (SR); //Set whether values are displayed on each pillar Renderer.getseriesrendererat (0). Setdisplaychartvalues (true); approximate number of coordinates of the//x-axis (this does not show the horizontal axis) Renderer.setxlabels (0); approximate nu

what we want, why is this synchronized the steward? We see the red part of the main method in the ThreadStart class, we create an instance of Safethread and its reference before starting the thread, and use its reference as a parameter to initialize the thread class ThreadRead1, That's when the reference to the Safethread instance is a sweet Bobo, who gets who can lock the synchronized locked block of code and execute the block code.Here's an example of what you can do with your own practice an

Speaking, last year, under the leadership of Ms. Yue, the embedded system was contacted to compile and transplant. And now we're getting into touch with the Android system's build and porting. The first chapter mainly introduces the compiling and transplanting technology of Android system. In fact, Android and embedded very similar. The main process involved in Android porting is roughly six steps: 1. Download the Android Linux kernel.2. Install the cross-tool chain. 3. Porting the Android Linux

= 3PERSON_PHONE_FIELD.has_default_value = falsePERSON_PHONE_FIELD.default_value = {}PERSON_PHONE_FIELD.message_type = PERSON_PHONENUMBERPERSON_PHONE_FIELD.type = 11PERSON_PHONE_FIELD.cpp_type = 10PERSON.name = "Person"PERSON.full_name = ".tutorial.Person"PERSON.nested_types = {PERSON_PHONENUMBER}PERSON.enum_types = {PERSON_PHONETYPE}PERSON.fields = {PERSON_NAME_FIELD, PERSON_ID_FIELD, PERSON_EMAIL_FIELD, PERSON_PHONE_FIELD}PERSON.is_extendable = falsePERSON.extensions = {}ADDRESSBOOK_PERSON_FIE

Follow the examples to learn java multithreading 6-how to correctly publish thread-safe objects, java6- Everything we mentioned above is only for the purpose of correctly releasing a thread-safe object. I. Closed threads This is easy to understand. If a variable changes its status in a thread, the variable must be thread-safe. We often use stack closures and ThreadLocal classes. There is a virtual machine s

that is placed concurrently to access the instance synchronized Protection block, which is valid only for the current instance, and the static Synchronized is a common monitoring block for all instances of the class, and the placement thread accesses the protection block of all instances of the class concurrently, synchronized the equivalent of this.synchronized, andThe static synchronized is equivalent to something.synchronized.2: How the deadlock, the active question all produces.The followin