Stack Overflow
Stack Overflow

Questions tagged [robust]

152 questions
0
votes
0 answers

Error in calculating confidence intervals robust regression (binomial)

For a project I want to do a robust regression with the 'robust' package in R. The data consists of prevalences of certain mutations on both X and Y axis so I used the binomial family. The problem is that whenever I try to calculate the confidence…
Tubeman
  • 71
  • 1
  • 5
0
votes
2 answers

Python - trying to perform a more robust linear fit

I have this data that I fit a linear function to and the fit determines other work (never mind, not important). I'm using numpy.polyfit, and when I simply include the data and the degree of the fit, nothing else, it produces this plot: Now, the fit…
Joshua D'Agostino
  • 39
  • 4
  • 10
0
votes
2 answers

C++ most robust way to copy a file

Okay, so I know that disk writing errors are very rare, so please just look past that because the data I am working with is very incredibly important (like SSIDs kind of important). So, I want to copy a file in the absolute most robust way using the…
Jack G
  • 4,553
  • 2
  • 41
  • 50
0
votes
1 answer

Matlab Robustfit - Coefficients Uncertainties Too Large

I have the following vectors: x = [0.0069 0.0052 0.0034 0.0024 0.0001 -0.0013 -0.0003 ... -0.0026 -0.0040 -0.0031 -0.0034 -0.0017 -0.0013 -0.0017 ... -0.0010 -0.0019 -0.0015 -0.0018 -0.0031 -0.0020 …
Good Friend of Mine
  • 1
  • 3
0
votes
1 answer

Clustered robust standard errors on country-year pairs

I want to replicate a Stata do.file (panel model) in R, but unfortunately I'm ending up with the wrong standard error estimates. The data is proprietary, so I can't post it here. The Stata code used looks like: xtreg Y X, vce(cluster…
Justus_89
  • 1
  • 1
0
votes
0 answers

Robust reconstruction of Indoor Scenes

I am very interested at this paper Robust reconstruction of Indoor Scenes(2015CVPR), but I cannot run this project provided by the author. I have already sent a email to the author, but no response. Did any one run it once. There is a problem about…
Feng Zhou
  • 1
  • 4
0
votes
1 answer

How can I use an lmRob model with factors to predict a new value?

I fit a multivariate model with lmRob in the robust package and I like the fit. How can I use the fit to make a prediction at a given point? The hackish solution is to plot it and place horizontal and vertical lines on the plot to pinpoint How can…
wdkrnls
  • 4,548
  • 7
  • 36
  • 64
0
votes
0 answers

How to deal "Error in model.frame.default(formula = y ~x ) variable lengths differ (found for)" in IRLS function

I'm trying use iteratively reweighted least squares method to estimate the coefficient of equation: y = a0 + a1 * cos(2*pi/365 * x) + b1 * sin(2*pi/365 * x) + c1 * x When I use IRLS to fit this equation I get an error: x <-…
user3689959
  • 9
  • 1
  • 5
0
votes
1 answer

Algorithm to embed invisible roubust watermarking for images

I'm doing a project on invisible robust watermarking for image security. I have to develop algorithms to accomplish following tasks. Construct watermark that cannot be totally removed from an image. Also i have to come up with an algorithm that…
Thilip Michael
  • 59
  • 1
  • 7
0
votes
0 answers

How can I fit a bounding (semi-)ellipsoid to a cluster of 3D data points?

I have a dataset of 3D points, which are arranged in clusters resembling a (semi-)ellipsoidal shape. When I try standard ellipsoid fitting as, e.g. implemented in the MATLAB function…
Michael
  • 280
  • 2
  • 13
0
votes
0 answers

how to use arima.rob

does anyone use arima.rob() function described by Eric Zivot and Jiahui Wang in { Modelling Financial Time Series with S-PLUS } ? I have a question about it: I used a dataset of network traffic flows that has anomaly, and I tried to predict the…
mnf
  • 1
  • 2
0
votes
2 answers

Increase maximum number of iterations in lmrob

How do you increase the maximum number of iterations (i.e., the maxit.scale parameter) in the lmrob function in the robustbase package in R? The default is 200, but I want to increase it.
Jason Samuels
  • 951
  • 6
  • 22
  • 40
0
votes
1 answer

Combining medcouple in ggplot's boxplot

ggplot's boxplot render any dot outside the range [Q1 - 1.5 * IQR, Q3 + 1.5 * IQR] as an outlier. As discussed in the R blog, this is not always a good idea, as false outliers may be reported due to asymmetric distributions. In that case, adjbox,…
leco
  • 1,989
  • 16
  • 30
0
votes
2 answers

Making this httpHandler more robust?

I have the following HttpHandler; I'm using it to push updates to the browser (where jQuery and GrowlUI are implemented) without the need for the browser to poll. I think all I've accomplished is moving the polling loop to the server. Can anyone…
almog.ori
  • 7,839
  • 1
  • 35
  • 49
-3
votes
1 answer

how to perform robust control on combined (electrical and mechanical) system in matlab or simulink

I'm trying to perform robust control on my plant model. i have seen examples on robust control performed on electrical system (motor) and mechanical system (spring mass damper) but i haven't seen if the systems are combined. Also I'm using linear…
kreigu
  • 1
1 2 3
…
10
11