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Questions tagged [moa]

MOA (MASSIVE ONLINE ANALYSIS) is stream mining toolbox. Its goal is to provide a benchmark suite for the stream mining community. MOA has close integration with weka and provides support for both classification and clustering.

MOA (MASSIVE ONLINE ANALYSIS) is java based data stream mining toolbox. MOA source code hosted in google code.

Data stream learning cycle can be summarized as follows.

  1. Process an example at a time, and inspect it only once (at most)
  2. Use a limited amount of memory
  3. Work in a limited amount of time
  4. Be ready to predict at any point

More information about MOA can be found in following documents.

Some MOA videos are host on videolectures.net

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MOA CluStream: What should we "name" the micro clusters that do not lie inside any of the macro clusters after k means is computed?

I am currently studying CluStream, and I have some doubts regarding the results. I will proceed to explain: If the micro clusters are clustered using K means, we all know that every micro cluster will belong to the closest macro cluster (computing…
onofricamila
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Java MOA Clustream WithKmeans: null center and (radius, weight = 0) for BOTH micro and macro clusters

First of all: I'm using moa-release-2019.05.0-bin/moa-release-2019.05.0/lib/moa.jar in my java project. Now, let's go to the point: I am trying to use moa.clusterers.clustream.WithKmeans stream clustering algorithm and I have no idea why this is…
onofricamila
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Stack trace java.lang.ArrayIndexOutOfBoundsException

When I learn the model and evaluate the arff data with this error, I encounter a problem solving. Thanks Failure reason: -1 *** STACK TRACE **: -1 at moa.core.DoubleVector.addToValue(DoubleVector.java:64) at…
Mahdi
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Getting number of micro cluster from Clustree in R

I am unable to retrieve number of microclusters from Clustree. Following is the code: library(streamMOA) data <- read.csv("data.csv", sep = ",", header = TRUE) stream <- DSD_Memory(data) clustree <- DSC_ClusTree(maxHeight =…
Annie
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Massive Online Analysis Framework- Split criteria

Am totally new to MOA. Am building VFDT classifier for certain number of instances(1000,10000,100000 and so on from a ArffFileStream). First, Am trying to use a learn model for the instances. Can anyone please tell me where can i find the split…
Vinod Chelladurai
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Process of Adding Classifier in MOA what is recompile it by adding a jar or java file?

I am trying only adding the .java file using cmd line, by compiling using javac and then executing using command line MOA (Massive Online Analysis). But it shows error as exception in thread main java.lang.noclassdeffounferror:moa/gui/GUI, so what I…
user1607753
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