Original: http://www.52ml.net/15063.htmlHow to choose a machine learning algorithmMay 7, 2014 machine learning smallroof How does you know the learning algorithm to choose for your classification problem? Of course, if you really care about accuracy, your best bet was to te
The article is from Professor Andrew Ng of Stanford University's machine learning course, which is a personal study note for the course, subject to the contents of the original course. Thank Bo Master Rachel Zhang's personal notes, for me to do personal study notes provide a good reference and role models.
§3. Logistic Regression of Logistic regression1 Classification classificationFirstly, the concep
Java Virtual machine learning-in-depth understanding of the JVM (1)Java Virtual machine learning-slowly pondering the JVM (2)Java Virtual machine learning-slowly pondering the working mechanism of the JVM (2-1) ClassLoaderJava Vir
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Preface:
Last sentArticleIt's almost half a month. Over the past half month, I have been exploring the way to mach
It seems that mathematics is always not enough. These days, in order to solve some problems in research, we held a textbook on mathematics in the library.
From the university to the present, the number of Mathematics Courses in the classroom and the number of self-taught mathematics courses is not very small. However, during the study, we always find that new mathematical knowledge needs to be supplemented. Learning and vision are the intersection of
Here is a list of books which I had read and feel it was worth recommending to friends who was interested in computer Scie nCE.Machine Learningpattern recognition and machine learningChristopher M. BishopA new treatment of classic machine learning topics, such as classification, regression, and time series analysis from a Ba Yesian perspective. It is a must read
Recommended BooksHere is a list of books which I had read and feel it was worth recommending to friends who was interested in computer Scie nCE.Machine Learningpattern recognition and machine learningChristopher M. BishopA new treatment of classic machine learning topics, such as classification, regression, and time series analysis from a Ba Yesian perspective. I
classifier to classify. The most obtained category is the final category of D .) Boosting: The main feature is Adaboost (Adaptive boosting ). During initialization, an equal weight of 1/N is assigned to each training instance. Then, the learning algorithm is used to train t-round training in the training set. After each training, assign a large weight to the training examples that fail to be trained, that
Chapter 1 Introduction1.1 What are machine learning?T o Solve a problem on a computer, we need an algorithm. An algorithm was a sequence of instructions that should was carried out to transform the input to output. For example, one can devise a algorithm for sorting. The input is a set of numbers and the output is their ordered list. For the same task, there is various algorithms and we may be interested in
the process of experience E.For message classification, spam and non-spam classification is the task T, the correct rate of classification is performance p, check whether the mailing label is garbage or non-spam is experience E.For machine learning algorithms can be divided into:-Supervised learning-Non-supervised learningSome
, classification, and other machine learning algorithms. The initial development of the community was "followed" by the paper published by ng et al.Map-Reduce framework (Map-reduce for machine learning on multicore) ", the Community has been committedDevelopment of machine
"Machine Learning Algorithm Implementation" series of articles will record personal reading machine learning papers, books in the process of the algorithm encountered, each article describes a specific algorithm, algorithm programming implementation, the application of practical ex
Recently in the "Machine learning actual combat" when an idea, and go to the Internet to crawl some data in accordance with the method of the book to deal with, not only can deepen their understanding of the book, the way can also be popular in GitHub Lala. Just look at the decision tree This chapter, the book's Theory and examples let me think that the theory an
, i.e., all of our training examples lie perfectly on some straigh T line.
If J (θ0,θ1) =0, that means the line defined by the equation "y=θ0+θ1x" perfectly fits all of our data.
For the To is true, we must has Y (i) =0 for every value of i=1,2,..., m.
So long as any of our training examples lie on a straight line, we'll be able to findθ0 andθ1 so, J (θ0,θ1) =0. It is not a nec
Open Course address: https://class.coursera.org/ml-003/class/index
INSTRUCTOR: Andrew Ng1. unsupervised learning introduction (Introduction to unsupervised learning)
We mentioned one of the two main branches of machine learning-supervised learning. Now we need to start
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Running for a period of time will find that the OutOfMemoryError exception was generated and a heap memory exception dump file was generated.(2). Java Virtual machine stack and local method stack overflow:Since Sun's hotspot virtual machine does not differentiate between
Scikit-learn is a very popular open source library in the field of machine learning, written in the Python language. Free to use.Website: http://scikit-learn.org/stable/index.htmlThere are a lot of tutorials, programming examples. And also made a good summary, the following figure summarizes the traditional machine
'); %set the Y-axis Lablexlabel (' Population of city in 10,000s '); %set the x-axis lable% ============================================================end A best-fit line is obtained by using gradient descent method.% defines the number of cycles % definition learning rate % compute and display initial costcomputecost (x, y, theta)% run gradient Descenttheta = gradientdescent (x, Y, Theta, alpha, iterations);Costfunction cost function implementatio
Objective
Definition: A linear classifier with the largest spacing on a feature space.
Kernel is a very important feature of SVM.
The learning strategy of support vector machine is to maximize the interval and form a problem to solve convex two-times programming.
Category 1 Linear SVM 2 linear support vector machine 3 nonlinear support vector
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