Top "Data-mining" questions

Data mining is the process of analyzing large amounts of data in order to find patterns and commonalities.

How to find the minimum support in Apriori algorithm

When the percentage values of support and confidence is given how can I find the minimum support in Apriori algorithm. …

data-mining apriori
Error in do_one(nmeth) : NA/NaN/Inf in foreign function call (arg 1)

I have a data table ("norm") containing numeric - at least to what I can see - normalized values of …

r machine-learning cluster-analysis data-mining k-means
Choosing eps and minpts for DBSCAN (R)?

I've been searching for an answer for this question for quite a while, so I'm hoping someone can help me. …

r data-mining cluster-analysis dbscan
How do I extract keywords used in text?

How do I data mine a pile of text to get keywords by usage? ("Jacob Smith" or "fence") And is …

text indexing keyword data-mining
1D Number Array Clustering

So let's say I have an array like this: [1,1,2,3,10,11,13,67,71] Is there a convenient way to partition the array into something …

arrays cluster-analysis data-mining dimension partition-problem
R Random Forests Variable Importance

I am trying to use the random forests package for classification in R. The Variable Importance Measures listed are: mean …

r statistics data-mining random-forest
Matlab - PCA analysis and reconstruction of multi dimensional data

I have a large dataset of multidimensional data(132 dimensions). I am a beginner at performing data mining and I want …

matlab data-mining pca
PCA For categorical features?

In my understanding, I thought PCA can be performed only for continuous features. But while trying to understand the difference …

python machine-learning scikit-learn data-mining
What is an intuitive explanation of the Expectation Maximization technique?

Expectation Maximization (EM) is a kind of probabilistic method to classify data. Please correct me if I am wrong if …

machine-learning cluster-analysis data-mining mathematical-optimization expectation-maximization
What is the difference between Gradient Descent and Newton's Gradient Descent?

I understand what Gradient Descent does. Basically it tries to move towards the local optimal solution by slowly moving down …

machine-learning data-mining mathematical-optimization gradient-descent newtons-method