libsvm

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getting started with EC2 for compute-intensive (non-web) parallel application

I\'m using LIBSVM for regression analysis.Works like a champ.But a 3-parameter grid search to optimize parameters for the model maxes out all four cores on my 2.66 GHz Intel box, and I still have to w[详细]

2023-04-13 02:11 分类：问答
OpenCV + HOG +SVM: help needed with SVM single feature vector

I try to implement a people detecting system based on SVM and HOG using OpenCV2.3. But I got stucked.[详细]

2023-04-03 09:29 分类：问答
bad result when using precomputed chi2 kernel with libsvm (matlab)

I am trying libsvm and I follow the example for training a svm on the heart_scale data which comes with the software. I want to use a chi2 kernel which I precompute myself. The classification rate on[详细]

2023-03-30 23:50 分类：问答
Help--100% accuracy with LibSVM?

Nominally a good problem to have, but I\'m pretty sure it is because something funny is going on... As context, I\'m working on a problem in the facial expression/recognition space, so getting 100% a[详细]

2023-03-29 18:52 分类：问答
Strict class labels in SVM

I\'m using one-vs-all to do a 21-class svm categorization. I want the label -1 to mean \"not in this class\" and the label 1 to mean \"indeed in this class\" for each of the 21 kernels.[详细]

2023-03-17 05:43 分类：问答
Java-ML(LibSVM) How can I get the classes probabilities?

We are using Java-ML(LibSVM) in order to execute the SVM algorithm over a multi-class problem Classifier clas = new LibSVM();[详细]

2023-03-15 05:54 分类：问答
How to use libsvm for text classification?

I\'d like to write a spam filter program with SVM and I choose libsvm as the tool. I got 1000 good mails and 1000 spam mails, then I classify them into:[详细]

2023-03-09 17:04 分类：问答
Why does svm_predict and svm_predict_probability give different results in java libsvm for an xor problem?

I have simple xor problem that I want to learn using the RBF kernel in libsvm.When I train the java libsvm using an XOR problem like:[详细]

2023-03-05 20:29 分类：问答
CvSVM questions

Some questions of using the opencv CvSVM What kind of svm is it using? Is it using svmligh开发者_如何转开发t? OpenCV2.2 has svmlight, but I cannot find much references to it.[详细]

2023-03-05 19:51 分类：问答
svmlib scaling vs. pyml normalization, scaling, and translation

What is the proper way to normalize feature vectors for use in a linear-kernel SVM? Looking at LIBSVM, it looks like it\'s done by just rescaling each feature to a single standard upper/lower range.H[详细]

2023-03-04 12:17 分类：问答