Top "Sampling" questions

In signal processing, sampling is the reduction of a continuous signal to a discrete signal.

How to perform under sampling in scikit learn?

We have a retinal dataset wherein the diseased eye information constitutes 70 percent of the information whereas the non diseased eye …

python python-2.7 dataset scikit-learn sampling
What does replacement mean in numpy.random.choice?

Here explains the function numpy.random.choice. However, I am confused about the third parameter replace. What is it? And …

python sampling
Resampling a sound sample, what filter do I use?

I am trying to resample a signal (sound sample) from one sampling rate, to a higher sampling rate. Unfortunately it …

c audio filter signal-processing sampling
Low Pass Filters and Sampling Frequency

I am trying to understand the relationship between low pass filters and sampling frequency. Let's say I have a signal …

filtering signal-processing frequency sampling lowpass-filter
Resampling of two data sets of different length in MATLAB

I have two vectors: sensorA of length 927 and sensorB of length 1250. I would like to make them of the same …

matlab signal-processing sampling resampling
OpenCV, how to use arrays of points for smoothing and sampling contours?

I have a problem to get my head around smoothing and sampling contours in OpenCV (C++ API). Lets say I …

c++ opencv contour sampling
Select cells randomly from NumPy array - without replacement

I'm writing some modelling routines in NumPy that need to select cells randomly from a NumPy array and do some …

python random numpy shuffle sampling
Android: startRecording() called on an uninitialized AudioRecord when SAMPLERATE set to 44100

I get an error, when I set the sampling rate to 44100 for the AudioRecord object. When it's 22050 it works fine. 02…

java android sampling audiorecord
How to generate a random 4 digit number not starting with 0 and having unique digits?

This works almost fine but the number starts with 0 sometimes: import random numbers = random.sample(range(10), 4) print(''.join(map(…

python python-3.x random sampling
Random Sampling from Mongo

I have a mongo collection with documents. There is one field in every document which is 0 OR 1. I need to …

mongodb sampling database