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Questions tagged [decision-boundary]

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Deriving a boundary for a single cluster data

Summary I have a dataset of 2D points that exhibit a distinct pattern. My goal is to create a boundary that encompasses the main cluster of points while excluding outliers. In other words, if a point ...
Victor Yerz's user avatar
2 votes
0 answers
812 views

What is the relation between Linear Classifier and Linear Decission Boundary (or Non Linear Decision Boundary)?

As we know (Wikipedia Definition): Linear Classifier makes a classification decision based on the linear combination of the feature vectors. Mathematically : $y = f(\sum w_i x_i)$ So , $f$ is our ...
Girish Kumar Chandora's user avatar
4 votes
1 answer
86 views

Is a "decision boundary" incompatible with proper scoring rules?

Having a decision boundary in a binary classification problem tells me that if the point lies on one side of the boundary, classify as $0$; if the point lies on the other side, classify as $1$. What ...
Dave's user avatar
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2 votes
0 answers
109 views

Determining the decision boundary for Naive Bayes

I'd like to know if this is a sensible idea and if there exist any already formed methods to do this (I'm new to the data science area). Essentially, I have used Naive Bayes to accurately classify ...
Dan Savage's user avatar
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1 answer
225 views

Step by step explanation of answer for discriminant function [duplicate]

This is a question/answer from my first assignment (intro class on pattern recognition) I don't understand how they used the p(x given w1) and p(x given w2) in the discriminant function. For example, ...
Mrtnchps's user avatar
2 votes
1 answer
6k views

Decision boundaries and Gaussian density functions

This is for my hw, and if anyone can solve the first part of the question it will be great. Here is the question: Assume a two-class problem with equal a priori class probabilities and Gaussian class-...
ceylan's user avatar
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