Questions about machine-learning functionality of Mathematica, for instance involving, but not restricted to, `Predict`, `Classify`, `FindClusters` and the various regression functions.

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Supervised Learning

Hi all I am just starting with mathematica. I wanted to train five fields as input and 3 fields as output in a total of 8 fields in database. I cannot find sample code for this
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1answer
86 views

How to know the internal algorithms of functions like Predict or Classify?

The document centre seems only explain how to use these functions, but just in an very brief way. I know Mathmatica is not open source, so we can not expect to see the code of the function, but are ...
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How to view ClassifierFunction's preprocessed data?

Classify apparently preprocesses your input data, for example (same example from Classify reference page, but using ...
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245 views

How to perform document classification (i.e. extracting topics from text)?

I need to build a multi-label text classifier. There are a bunch of techniques for doing this, and it's called automatic document classification. I'm trying to use the EM technique (expectation ...
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1answer
79 views

Mathematica learning resource dealing with bayesian inference

Is there any good resource dealing with both Mathematica and bayesian inference?
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49 views

How do I access the parameters in Classify using Support Vector Machine as method?

I have a dataset that I want to classify and I do the following: clf = Classify[xtrain -> ytrain, Method -> "SupportVectorMachine"] How can I use my own ...
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How to make Distance transform invariant to scale

I am using distance transform as a descriptor to encode silhouettes in order to do shape recognition task. It is clear that distribution of distance transform is invariant under rotation and ...
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2answers
173 views

How to change NeuralNetwork options?

How can I manipulate the architecture and problems of a NeuralNetwork in Predict or Classify? For example, running the following ...
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1answer
104 views

Classify Function : Sentiment Polarity

I have been working on a project involving the new Classify[] function. More specifically, the sentiment analysis function. It works perfectly well, as in the documentation: ...
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1answer
139 views

Using Predict on images

I have a dataset of some (grayscale) images (stored as a list in inputImages) varying in size and content (this is example data from Wolfram, so you can run the ...
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1answer
134 views

Sentiment analysis of tweets

I want to use Mathematica for a sentiment analysis on tweet-messages. For that purpose i selected several tweets. Each tweet is interpreted by myself as positive (pos) of negative (neg). For example: ...
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2answers
129 views

Importing multiple images for machine learning classification

I want to create a ML classifier using images just like this example. I have two classes of images in two different folders. Is there an easier way to import all images from both folders rather than ...
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1answer
321 views

How to split a Dataset into training and testing for machine learning?

Suppose I have iris data In the Dataset Format. How to split the iris data Into training and testing for Machine learning? For example,Transform the data for Classify.
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2answers
93 views

ClassifierInformation's “ClassPriors” misreporting?

To the TLDR people It seems to me that when you explicitly set ClassPriors when running Classify, it creates a ...
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1answer
191 views

How can I export my learned ClassiferFunction[] and PredictorFunction[]s?

Mathematica 10 provides beautiful high-level machine learning functionality. Sadly, the learned functions once created are rather opaque objects. I need to use them in other projects, so here is my ...
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102 views

How do I obtain the Fisher Information Matrix from a data set?

My apologies in so much as this is probably in large part a problem of me not being aware of the necessary mathematics but since this should be a common issue in machine learning and Mathematica now ...
11
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1answer
390 views

Classify command in Mathematica 10

Where can I find documentation about the methods used in the Classify command in Mathematica 10? Specifically, how does the method ...
2
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3answers
220 views

Clustering data sets with multiple variables

I am learning how to cluster large datasets and this maybe a newbie question, but I haven’t found a suitable answer in the Documentation or on this board. My question is best illustrated by an ...
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1answer
289 views

Classify the classic tennis example

When using the classic tennis data (reference here) with Classify ...