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Questions tagged [stability]

152 questions
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Nyquist stability of a dataset

I'm trying to find the stability of a dataset of (re, img) points I get from a circuit simulation in SPICE. In the end I would like to have a script that starting from a set of points gives you the stability of a system according to Nyquist criteria…
ClaudioC
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How could I tell from a observed oscillation frequency to determine if it is caused by the instability of the control system or not?

I have a control loop to control the vehicle on the centerline with a bandwidth of 2 rad/s, and I saw the vehicle keeps oscillating around the centerline in a sinusoid whose period is around 8 to 10 seconds; how could I tell that if the oscillation…
LHX
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How to achieve more stability in OpenCV 4.1.1 Aruco marker detection?

I am experimenting with the Aruco detection in a video. I am trying to detect Aruco markers in the video frames but the detector fails to get all of them. It is a stable image, so no movement is going on in the video. I was unable to get it working…
Robert
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should I trust the product of 500 probabilities

I thought special techniques are needed. But experiments show little difference. import numpy as np import tensorflow as tf p = np.random.rand(500) print(f'prod : {np.prod(p)}') print(f'exp-sum-log: {np.exp(sum(np.log(p)))}') e =…
user3015347
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Operations: Saving in Variables Then Operating vs Single Liners

I am writing a program in Python (using the numpy package). I am writing a program that contains a very long function that involves many terms: result = a + b + c + d +... ...whatever. These terms a, b, c, d, etc...themselves are matrices that…
user14566958
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php composer explain minimum stability with examples

Can you please help me to understand stability concept in composer What makes a package considered as a particular stability? is it tag name? is it branch name? or something else? When you create a package, how to set its stability, can you give…
Jimmix
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Go app that relies on a poller to always be running, advice on ensuring its stability

So my application relies on a goroutine that polls every x seconds. func main() { // ... go p.StartPoller(); } What are some tips to make sure this poller is always running? I'm just weary of things maybe because I don't understand fully…
Blankman
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Should I avoid using net/http/httptest in production code?

I like the ability to present a buffered net/http.ResponseWriter as a net/http.Response in some situations which net/http/httptest.ResponseRecorder would give me, but the package name makes me a bit concerned about using it in production code. I…
Loren Osborn
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r Error in stabsel function

I´m running the stabsel function on a dataset and I´m keep getting an error that I cannot overcome. The command and error message are: stab.lasso <- stabsel(x = table[, -2], y = table[, 2], fitfun = lars.lasso, cutoff = 0.75, PFER = 1) #column 2…
Jcotignola
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Is NHibernate 3.0 built-in Linq provider stable?

Can i depend on NHibernate 3.0 built-in Linq provider to perform complex queries contain aggregate functions such as Max and Min and contains string operations such as Contains, StartsWith, or EndsWith ??
Saw
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Stabillity in Drive API java app

I am not sure this is the right place for this kind of question, if not, please point me in the right direction - thanks. After searching a lot in many different places, I think You are my last hope :) I have used the Google Drive API V3 Quickstart…
Nyvang
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randomized lasso in R

I have been trying to create a Randomized Lasso function in R but it doesn't seem to generate the same results as the Python sklearn randomized lasso function. I'm applying the same philosophy here but couldn't understand the difference. The code…
Kuang Liang
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How can I speed up the front end of a web application?

We have an application that pulls in about 50 records from a database with about 13 data points for each record. Each record needs to be reviewed for accuracy, sometimes edited, and then 'approved' or 'rejected'. It seems as if the process of…
VinniV
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How can I check for stability in a sort of integers?

I'm working on an activity in which I have to determine what sort is used in a set of given methods, which I can't actually view as it's run from a .jar file which only contains .class files. All I can see is timing information (so I can determine…
Graham Mcclelland
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Microsoft Access accdb versus mdb

I have to repair and piece together a very shaky database system that is used by several members of staff in the organisation I'm working in. This system has been replicated, duplicated, shared around and otherwise abused over its lifetime, along…
Paul
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