Questions tagged [pattern-recognition]

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Which method should I take for my project?

I'm working on small project that will automatically detect (or classification) archetype of TCG game. But I'm really confused about which method to take during working on this. Let me explain about ...
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2answers
69 views

How to identify patterns in dataset [closed]

I have a dataset that pertains to calls received to a hospital emergency helpline. My task is to identify patterns in the data. How do I approach examining the dataset to identify patterns? Extract ...
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7 views

How to prepare/optimise data for FP-Growth algorithm

I'm using spark mllib for FP-Growth algorithm for our ML model. Description of my issue: I have taken transactional data from our production database to mine the frequent brought items recommendation. ...
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13 views

Detecting synchronization cascades in time series

I am researching delayed synchronisation in a system of coupled oscillators. There is a one-way causal connection between the oscillators, which leads to the synchronisation events occurring in a ...
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1answer
25 views

Finding a pattern in reponses in R programming [closed]

I did a study in which around 1000 participants took a test (100 questions). In this study participants were asked in each question to choose between two texts (text 1 and text 2) and decide which ...
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14 views

Direct Discriminative Pattern Mining for Effective Classification - implementation

I'm looking for any actual working code implementation of the DDPMiner algorithm mentioned in the Direct Discriminative Pattern Mining for Effective Classification article form 2008 I'm having real ...
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1answer
20 views

Help with DDP Mining algorithm for Effective Classification of data sets from 2 groups

I'm trying to implement the DDPmine algorithm from this article as part of some project, and I do not understand where in the algorithm we use the Class Label of each transaction? We have transactions ...
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14 views

LDA-like algorithm but at the character level?

I have a catalog of products and I'd like to find "topics" in their description. The problem is that you might find in the description things like GraphicsCardVendor10.2 ...
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2answers
40 views

Find repeating patterns in data

I have database of sequential events for multiple animals. The events are represented by integers so it looks something like: ...
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1answer
13 views

Extracting patterns from the spatiotemporal movement of objects

Say I have a database with x and y coordinates (30 times per second) for some objects in a 2d plane. Is there a way to extract patterns from these coordinates? If so, is there a way to visualize these ...
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8 views

A question about dual representations, kernels and notations used in Bishop's book

I'm having hard times about kernel functions and dual representations on 'Pattern recognition from and machine learning' by Bishop. Here it is the page I'm trying to understand: Of course setting the ...
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1answer
50 views

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
30 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
75 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
48 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
160 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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12 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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19 views

Advanced frequent pattern identification

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

Python dataframe iterate over rows

Dataset ...
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2answers
36 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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151 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
34 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
60 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. ...