classification

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Classification functions in linear discriminant analysis in R

After completing a linear discriminant analysis in R using lda(), is there a convenient way to extract the classification functions for each group?[详细]

2023-02-23 14:52 分类：问答
Event correlation and filtering - How to, where-to start?

Got an asynchronous stream of events, where each event has information like - Agency (one of many Agencies possible to be served by my solution)[详细]

2023-02-21 07:59 分类：问答
dimension reduction of matrix TFIDF

Icalculate the TFIdf(term frequency,inverse document frequency) and i have seen that after this step it is necessary to reduce the dimension of My Matrix withusingmethods like LSI ,chi -square test...[详细]

2023-02-20 11:38 分类：问答
Feature selection and unsupervised learning for multilingual data + machine learning algorithm selection

Questions I want to classify/categorize/cluster/group together a set of several thousand websites. There\'s data that we can train on, so we can do supervised learning, but it\'s not data that we\'ve[详细]

2023-02-19 02:23 分类：问答
Google Summer of Code: web classification dataset

I heard that Google hosted (or will host) a web classification competition and they provided a large (170k+ d开发者_如何学运维ocuments) dataset of web sites that were classified into multiple categori[详细]

2023-02-18 20:19 分类：问答
Calculating the perplexity of a language model for email classification

I have a feature set of 500 of the most frequently occuring uni-grams from a corpus of emails. I have been using this to classify e开发者_C百科mails using c5.0 based on the occurence/absence of each o[详细]

2023-02-18 14:50 分类：问答
Plotting a decision boundary in matlab

I have two classes of data which are plotted in 2D and I w开发者_运维知识库ish to plot the nearest-neighbours decision boundary for a given value of k.[详细]

2023-02-18 10:29 分类：问答
Image Descriptors with SIFT/VLFEAT

I want to perform a classification task in which I map a given image of an object to one of a list of predefined constellations that object can be in (i.e. find the most probable match).[详细]

2023-02-17 21:52 分类：问答
PHP Frameworks - Is there a "best" one? [closed]

As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references,or expertise, but this question will likely solicit debate, a[详细]

2023-02-17 08:44 分类：问答
How to apply classifier in Weka's Explorer?

Let\'s say, I\'ve build a model (e.g. J4.8 tree) and evaluated it with cross-validation. How can I use this model to classify new dataset? I know, I can set a file with the data to classify with \"Sup[详细]

2023-02-17 05:35 分类：问答