Questions tagged [pattern-recognition]

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Subsequence parttern matching for time series

I have a set of time series data (just like voice sequence data) with the pattern as shown in the first figure (theoratical data). The measured data is given as presented in the second figure. What I ...
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1answer
25 views

Machine learning algorithms for Geometrical objects shapes identification

Are there Machine learning algorithms which will take input dataset of all geometrical objects shapes as images in gif,jpg,tiff formats & output the geometrical shapes names? i.e. Geometrical ...
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2answers
69 views

Learn (common) grammar / pattern from set of sample strings?

So I currently have a text pattern detection challenge to solve at work. I am trying to make an outlier detection algorithm for a database, for string columns. For example let's say I have the ...
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1answer
40 views

Similar algorithm to apriori to find unpopular sequential patterns

I am working with a dataset that looks like similar to this one but it is way larger (approx. 30.000 arrays): ...
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1answer
63 views

Simple Binary Classification Example in Python

I'm not sure the correct place to ask, but I'm trying to develop a simple function/algorithm that outputs a predicted number from a sequence of numbers (I have a background in Python, but little to no ...
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0answers
9 views

During modeling binarized handwritten digit images using a BMM and EM algorithm, why must, during initialization, the value of means sum to 1?

This is my first question on StackExchange. So please pardon any mistakes that I might've made. I'm reading about Multivariate Bernoulli Mixture Models and the EM algorithm from Pattern Recognition ...
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1answer
26 views

Find the time between two events by customer id [closed]

I need to find a customer has bought P1, and after how many days customer will buy P2. I am unable to find the days between order of P1 and the next order of P2 by the same customer. I have data as ...
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0answers
24 views

Characterizing nonlinear pattern inside the noise from the scatter plot

I have the following scatter plot. The following scatter plot example consists of 1) two traces of curve and 2) background noise as you can easily characterize by just looking at them. In this case, I ...
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0answers
18 views

Advanced frequent pattern identification

I have some dictionary data like this: ...
2
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1answer
77 views

Python dataframe iterate over rows

Dataset ...
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2answers
34 views

Which algorithm to use to identify clusters with a similar value?

Here, an example of my problem: 10000 observations of people with several features [age, gender, region, number of sons, ...] and a value to predict "income". There is not a general relationship ...
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0answers
11 views

Learnable distance measure for segments of periodic multichannel signal?

We have a set of users, each with several sessions, each session represented as multichannel signal. Users behave differently, but if we visualize several sessions of the same user we can often see a ...
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0answers
114 views

Root cause analysis using Machine Learning or NN

I am trying to build a predictive model that will analyze pattern from a snapshot file (log) and give the root cause analysis of the file i.e the class to which the pattern in the logs belongs to. I ...
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1answer
32 views

Is pattern recognition the same as unsupervised learning? Is machine learning the same as supervised learning?

Firstly, here is the definition of a well-posed learning problem: A computer program is said to learn from experience E with respect to some task T and some performance measure P, if its ...
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3answers
58 views

Predict Data Linking

I've two different datasets A(x1, x2, x3...xn) and B(y1, y2, y3...yn). Each instance in A is linked with an instance in B i.e. only one unique pair exists. ...