# Questions tagged [pdf]

Probability density function (PDF) of a continuous random variable gives the relative probability for each of its possible values. Use this tag for discrete probability mass functions (PMFs) too.

1,340 questions
Filter by
Sorted by
Tagged with
29 views

### What's the purpose of using “algorithm = ball_tree” in sklearn.neighbors.KernelDensity?

In sklearn.neighbors.KernelDensity，there is a parameter "algorithm = ball_tree". What is its specific role in KDE? ...
47 views

### Estimation of the conditional density functions

Suppose we have a random vector $x=[x_1, x_2, ..., x_{10}]\in\mathbb{R}^{10}$. Obviously, $x_1$, $x_2$, ..., $x_{10}$ are random variables theirselves. I have 500 observed samples of $x$ which I am ...
90 views

### Relationship between a logistic decision function and Gaussian Noise

Imagine an experiment, in which an observer has to discriminate between two stimulus categories at different contrast levels $|x|$. As $|x|$ becomes lower, the observer will be more prone to making ...
80 views

57 views

### What's the expression for convolution of a uniform[a,b] density and a normal(0,d^2) density?

Suppose I have $X\sim Uniform[a,b]$ and $Y\sim normal(0,d^2)$, what's the expression for the density of $Z=X+Y$? Let $F_{Z}(z)$ be the cdf of $Z$ evaluated at $z$, and let $\Phi(\cdot)$ and $\phi$ be ...
21 views