# Questions tagged [pattern-recognition]

The tag has no usage guidance.

98 questions
Filter by
Sorted by
Tagged with
178 views

### Getting speed difference between signal comparison using Dynamic Time Warping

I understand that Dynamic Time Warping is an algorithm to find a matching between two signals with different length and speed But is there a possible way to find the speed difference between the two ...
20 views

### How do i construct a code for this problem? [duplicate]

In a village there are n houses , some have electricity some dont. Those having electricity are labeled as 1 and others 0. Houses are arranged in a line from left to right (1 to n). let x1 x2 x3........
10k views

### Machine Learning: Identify Patterns in Time-Series Data

I work in renewable energy. My company gathers a lot of data from equipment. This typically includes process data (such as transformer temperature, line voltages, currents, etc.) and discrete alarms (...
15 views

### What is the term for the object to be identified in a pattern recognition problem?

What is the term for the object to be identified in a pattern recognition problem? So, for example, if one were matching a glyph expected to be an alphabetic letter to a set of templates, what is the ...
38 views

### Using Taylor series in 1D Grayscale Image

Could someone point me in the direction of how to solve this? I = [I1, . . . , In] is a 1D grayscale image and D = [D1, . . . , Dn] represents the second derivative of I. I am given the four pixel ...
850 views

### Normalized measure from dynamic time warping

I am trying to find the similarity between two time series, but not in terms of distance, in something more sensible such as percentage of similarity. In other words I need something that shows the ...
711 views

### How to identify labels in unsupervised learning?

Let's say I am working on handwritten digit recognition (0 to 9). I know for instance that if I use clustering then I need to look for 10 clusters. But once I have the 10 clusters,how do I identify ...
363 views

### Training Error & Convergence to True Error

I Take some online class for Machine Learning. one of teacher say this sentence. if we have m data points, the training error converges to the true error as m → ∞. i thought, this sentence not ...
756 views

### Partial polygon matching

I am looking for fast procedures for polygon matching, i.e. checking polygon similarity under different transforms translation only, translation + rotation, translation + scaling, translation + ...
448 views

175 views

### How does facial recognition work?

I'm interested in learning about how facial recognition works. I'm especially interested in the algorithms or approach that is used. What are the leading methods for facial recognition? Is there a ...
428 views

### Unsupervised anomaly detection: assigning the clusters to normal and anomaly

Having a unsupervised algorithm done on a dataset (e.g. K-means), how can I determine which cluster is normal and which is anomalous (for 30 clusters, for example)? If the dataset contains normal ...
256 views

### Is developing an OCR considered a research project? [closed]

Is developing an optical character recognition system for an alphabet which has no previous ocr considered a reputable conference or journal worthy research project, given the fact that there are so ...
323 views

### Handwritten character recognition as characters are being traced

I'm looking for an OCR technique (PCA or SVM or anything else) in a peculiar setting. I want to detect the motion of the finger so that if someone writes something in front of the camera in the air, I ...
160 views

### Speech vs Music classification

I want to determine which parts of an audio file contain speech respectively music. I hope someone has a made something like this or can tell me where to start. Can you please suggest some method or ...
832 views

### Difference between HSI and YCbCr for pattern recognition by color

I am doing a project on face detection in C#. I want to find the skin area by using skin color segmentation. For that purpose, I have to extract the skin area. I know I can use HSI or YCbCr, but what ...