Machine learning algorithms must act on data. The nature of data determines whether the applied machine learning algorithms are suitable, and the quality of data determines the performance of algorithms. Therefore, it is important to study and analyze data. This article, as the first part of the study data series, lists four of the most popular machine learning datasets.Iris
Iris, also known as Iris flower
(Ping, ping scan, trace route, Name Lookup, name scan, DNS lookup, Port Scan, service scan, finger, Whois, and throughput), packetgrabber is a remote datagram collection program. the peek SDK is also provided to help you develop plug-ins on your own. The SDK documentation is in the 1033/documents/peek sdk/directory of the installation path.Etherpeek for Windows is an award-winning Ethernet traffic and protocol analyzer. etherpeek establishes "Easy to use" industry standards. etherpeek is the be
In 1975, Charles Iris published an article in the Financial Analyst monthly, describing investment as a "loser game" for the first time ". At that time, iris observed that in the entire investment field, thousands of people rushed forward to compete for the "undiscovered" stock in front of them. These people were trained to look at the problem in the same way, constantly making "unforced mistakes"-this is a
I found some materials today. However, I feel that Java is more open-source and has a Chinese version. It is much easier for me to read English. The Java open source summary web site is: http://www.open-open.com/index.htm
Below is the Open Source of. net, mainly in SF. net
Project
URL
Introduction
Rainbow
Http://www.rainbowportal.net/Http://sourceforge.net/projects/rainbowportal/
The Rainbow Project is an Open Source Initiative to build a comprehensive co
I won't talk about anything else. I just went to the code,JSP Version The code is as follows:Copy code String ua = request. getHeader ("User-Agent"). toLowerCase ();If (ua. matches ("(? I ). * (android | bb \ d + | meego ). + mobile | avantgo | bada \/| blackberry | blazer | compal | Eline | fennec | hiptop | iemobile | ip (hone | od) | iris | kindle | lge | maemo | midp | mmp | netfront | opera m (ob | in) I | palm (OS )? | Pho
] a A B CLevels:a b C[1] 1.2 2.3a.1l a.2l b.3l b.4l1 1 2) 3 4Finally, let's look at a bit more complex R code execution in python." " Library (randomforest) # import Random Forest Package # # Use data Set irisdata = Iris # using the Iris DataSet table (data$species) # # Create a randomforest m Odel to classfy the iris species# create a random forest model for
, FUN = NULL, ..., simplify = TRUE)Parameter list:
X: Vector
Index: The indexes used for grouping
Fun: a custom call function
...: Receive multiple data
Simplify: Whether array, when the value array, the output results are grouped by array
For example, calculate the mean of the petal (Iris) length of different varieties of irises.# 通过iris$Species品种进行分组> tapply(
touches the tip of the nose. Using the nose as a key object, align the ellipse to the nose. To do this, you need to select 2 shapes and hold down the ALT key when you click the nose shape. You will see a thick stroke around your nose to indicate the key object. Go to the Alignment panel and click the Horizontal center alignment.
Then select the Anchor Point tool (SHIFT-C) and move down the anchor handle of the bottom anchor point to about 45 °. Use a guide to move the anchor handle to
convert the data according to this set of "bases".Scikit-learn itself provides some examples of data, the more common is the Anderson Iris flower data set, handwritten image dataset and so on. Now use IRIS data set Iris to write a simple machine learning example. For this data set, you can read the "R Language Data Mining Practice-Introduction to data mining"#-*
canopy, they must fit in memory) and a list of Vectors
Vectordump
Dump vector to text file
Dump vectors from a sequence file to text
Viterbi
Viterbi algorithm
Viterbi decoding of hidden states from given output states sequence
Of course, some of the above Chinese translation is not very accurate, and did not use, the specific use of a lot of details.
Mahout provides a number of clustering, classification, recommendation (collaborative filtering
actual output y=sign (w*x+b)
5, Update weight vector w (n+1) =w (n) +a[d-y (n)]*x (n), 0
6, the judgment, if satisfies the convergence condition, the algorithm completes, otherwise returns 3
Note that the learning rate a for the stability of the weight should not be too large, in order to reflect the error on the weight of the correction should not be too small, in the final analysis, this is an empirical problem.
From the previous narration, the Perceptron has a certain convergence for the lin
human face recognition in vivo detection
In biometric systems, in order to prevent malicious people from forging and stealing other people's biological characteristics for identity authentication, biometric systems need to have a live detection function, that is, to determine whether the submitted biological characteristics come from living individuals.
In vivo detection of biological characteristics, the use of human physiological characteristics, for example, in vivo fingerprint detection can
1. Overview
A feature column is a bridge between the original data and the model. In general, the essence of artificial intelligence is to do weights and offset operations to determine the shape of the model.
Before using the TensorFlow version, the data must be processed in a kind and distributed way before it can be used by the artificial intelligence model. The appearance of feature columns makes the work of data processing much easier. 2, the function of the feature column
The characteristi
advantages of the PLYR package, see two examples below:(1) For simple problems, the PLYR and apply functions have the same effect.> M> Apply (M,1,mean)[1] 1.666667 3.333333 3.000000 4.000000> aaply (M,1,mean)1 2 3 41.666667 3.333333 3.000000 4.000000(2) Here's a complicated one.A linear regression model was set up for each flower, and the results were given by the iris Iris DataSet.> Attach (
, has a tail that stays outside when the card is inserted.
Hardware specifications are the highlight of this update. The new 15-inch retina-screen MacBook Pro features a 2.3GHz Core i7 Haswell four-core processor and the corresponding Iris Pro 5200 HD graphics, with 8GB or 16GB memory, 256GB or 512GB solid-state drives. If you are willing to face higher prices, you can also opt for the Nvidia GeForce GT 750M discrete graphics card. This year, Apple h
I. PrefaceThe new version of Foxmail provides the "express mail" function. At first, I did not know how to use it. Later I learned to set the IP address of the local DNS server in tools> System Options.I think this new function is quite useful. You do not need to use the SMTP proxy to directly send emails to the mail exchanger in which the mailbox is located. At the beginning of the summer vacation, I want to implement this function in VC ++. After capturing the package with
, and the future price of a stock is predicted to be a return task because the price has a continuous value attribute. Both tasks aim to train a model so that the error between the predicted value of the target variable and the actual value is minimized. Predictive models can be used to determine customer responses to product promotions, to predict disturbances in the Earth's ecosystems, or to determine whether a patient suffers from a disease based on the results of the examination.Example 1.1
Tags: DNS Server Linux socket DNS protocol details
I. PrefaceThe new version of Foxmail provides the "express mail" function. At first, I did not know how to use it. Later I learned to set the IP address of the local DNS server in tools> System Options.I think this new function is quite useful. You do not need to use the SMTP proxy to directly send emails to the mail exchanger in which the mailbox is located. At the beginning of the summer vacation, I want to implement this function in VC ++. Af
. Net open source project LINK
Project
URL
Introduction
Rainbow
Http://www.rainbowportal.net/Http://sourceforge.net/projects/rainbowportal/
The Rainbow Project is an Open Source Initiative to build a comprehensive content management system using Microsoft's ASP. NET and C # technologies.
Data Access Application Block
Http://www.gotdotnet.com/workspaces/workspace.aspx? C20d12b0-af52-402b-9b7c-aaeb21d1f431
Dotnetnuke
Ht
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