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Questions tagged [pattern-recognition]

Pattern recognition is the term given to the science of automating the classification of input into pre-determined categories, or on the other hand, of being able to recognise particular categories of input by their characteristics.

Pattern recognition is the assignment of a label to a given input value. It is a kind of classification task, such that an input is classified to pre-trained class. Pattern recognition is studied in many fields, including psychology, psychiatry, ethology, cognitive science, traffic flow and computer science.

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How to Identify Repetitive Characters in a String Using Python?

I am new to python and I want to write a program that determines if a string consists of repetitive characters. The list of strings that I want to test are: Str1 = "AAAA" Str2 = "AGAGAG" Str3 = "AAA" The pseudo-code that I come up with: WHEN…
MEhsan
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Decision Tree, What is Wrong here?

I took a contest two days ago. one of our question is as follows: decision tree with depth 2 is constructed for two binary feature. how many features are in hypothesis space that can be shown with the following tree ? The answer sheet say…
user4249446
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Extracting Customer Unique IDs from Text

I need to extract customer IDs which are unique alphanumeric character sequences from text. They can contain digits only or digits and alphabetic characters or only alphabetic characters. We can assume that they are longer than 5 characters. They…
alan turing
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What algorithm to use to obtain Objects from an Image

I would like to know what algorithm is used to obtain an image and get the objects present in the image and process (give information about) it. And also, how is this done?
Karthik.K
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Can a neural network be used for this?

I wan't to create a program that can tell what you "Want" from an input. IE: when you tell siri to find a place to eat, it knows what you mean. I was thinking of using a neural network to try and recognize what the person means based on training…
Pandamonium99
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Pattern recognition, maximum likelihood, naive Bayes classifier

I am given 2 classes ("class1.dat" and "class2.dat") that consist of rows, and each row is a vector of 20 characteristics (20 values). I take 10, arrange them with the fisher ratio and keep the best 5 results, then estimate the value of each normal…
Dimitris Dimitriadis
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How to recognize if there is a signature in a known area using openCV?

I have an area where the signature can be placed. On the white space of the paper. How would you come up with an idea to recognize if there is or not the signature? Thanks
John
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How to compress multiple lines into single/fewer lines using regular expression or wildcard character?

I want to compress multiple lines of string having some common elements into single or fewer lines by replacing the changing values with wildcard character. Example Input: Lorem ipsum dolor sit amet_0 Lorem ipsum dolor sit amet_1 Lorem ipsum dolor…
Saurabh
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Python - AttributeError: 'numpy.ndarray' object has no attribute 'input_shapes'

This is related to my question, here. I now have the updated code as follows: import tensorflow as tf from tensorflow.keras.models import Sequential from tensorflow.keras.layers import Dense, Dropout, Activation, Flatten, Conv2D, MaxPooling2D import…
Vikas Kumar Khurendra
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how create char dataset like minst_digits dataset

I have 62000 font images( 0-9,A-Z and a-z images) data set in which for single character have 1000 image.I have created csv file of 62000 row of images normalized pixel value and labels. I don't know to extract this csv file in training,validation…
vikas sonwani
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how to give image input to neural network for pattern recognition

I am working on pattern recognition of the plant disease image using back propagation neural network(in java). I knew that the different binary features can be given as input to the neural network. But I am totally confuse that how to compare the…
Paras BK
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Language to write neural network and visualize data

I am looking to create an artificial neural network that is able to recognize simple stock market patterns that occur over a few days and then I want to be able to graphically display the output. For example if a user typed in the name of a company…
James
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How can I tell what type of computers are in a coffee shop?

This is more a thought experiment than anything. I'm wondering what it would take to detect everything I legally can about the laptops in a hotspot. My first thought was to grab every MAC address I can and extract the maker from the first 24bit. The…
BCS
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Using trees generated by rpart in R to classify a new observation

Say I use the rpart function in R which fits a classification tree to a dataset. How do I then use this tree to classify a new object?
user1066113
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How to extract the address details from the given text?

How do i extract the address (39/4B.......700025) without \r\n from the below text? Text<-"From :\r\nName : NAMITA ROY\r\nAddress : 39/4B\r\n GOPALNAGAR ROAD\r\n ALIPORE\r\n KOLKATA,WEST…
kroy
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