Questions tagged [error-handling]

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Errorbars on a weighted average (of a non gaussian distribution)

I have some datapoints $x_i$ and errors $\sigma_i$ which are the absolute value of some datapoints $w_i$ with (supposed) gaussian errorbars (the $\sigma_i$). The $x_i$ are amplitudes so we did not ...
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851 views

XgBoost error: contrasts can be applied only to factors with 2 or more levels

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0answers
48 views

Modified Voting Algorithm to find the best recommendation

I have to find the best 10 items from the set of items for x number of given features. I don't know what the best recommendation will be. User data is not available to validate it. After reading a ...
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1answer
42 views

How to create a system to detect text structure of a file?

Let's say I want to create a Machine Learning system that has a lot of log files of some few types (F1, F2,.. Fn) and I get a new Log file with maybe some errors or ...
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1answer
62 views

Importing Excel format data into R/R Studio and using glmnet package?

I have no problem importing Excel formatted data into R/R Studio and use all other R packages that I use. But, when I want to use the glmnet package to develop a regularization model, I invariably ...
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0answers
21 views

binary classification for counting - estimating the error on counts due to error on prediction score

Ok, so I have the following set up: I have a binary classification problem and I am classifying events into signal and background. Ultimately, I want to count how many background events and how many ...
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35 views

k nearest neighbors method, temporal trend in error

I have this set of data that looks like this I was asked o build a $k$-nearest neighbors algorithm for it which I just finished building. I have this question in regards to the data that I do not ...
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17 views

Implementation of reliable rule learning

I want to perform "reliable rule learning", i.e. mining a set of rules with a very low number of false negatives. I recently read the paper "Reliable agnostic learning" by Kalai et al. (https://doi....
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20 views

How to calculate error in omega having error in cos(omega*x)?

I have an equation $cos(\omega \times x) = c$. How can I calculate uncertainty in $\omega$ knowing (for each $x$) $c$ and uncertainty in $c$?
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23 views

Operands Could not be Broadcast with Shapes (19,)(0,)

I have googled and read something similar to the problem I have but I do not seem to know how to fix the error I got from this particular code: ...
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15 views

CNN models comparison

I coded a 38 layer CNN and 8 layer CNN but there's something wrong in my 38 layer CNN, which doesn't learn anything. Not able to fugure out what's wrong. They were trained on CIFAR.
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1answer
42 views

Making Sense of this Error Message

I am using a book and a video to learn how to use KNN method to classify movies according to their genres.This is my code: ...
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50 views

How to describe accuracy/error without ground truth?

I am using machine learning regression models to predict motor scores among a population with spinal cord injury using features derived from their actual movements. Although the clinical measure we ...
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8 views

Error using imread function in matlab code

I was doing some sort of speech recognition pattern for recognition of sound but I stuck at imread error in matlab, any advice what to change in picture below you can find code and error. Code Error ...
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9 views

How to find a model for data with anomalous error

I have some data which seems to be distributed along a line with large negative erros $Y \sim X - \epsilon \,\, $ with $\, \, \epsilon \in [0, \infty)$. Somehow, the error is not gaussian and ...
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1answer
2k views

PySpark: java.io.EOFException

System: 1 name node, 4 cores, 16 GB RAM 1 master node, 4 cores, 16 GB RAM 6 data nodes, 4 cores, 16 GB RAM each 6 worker nodes, 4 cores, 16 GB RAM each around 5 Terabytes of storage space The data ...
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1answer
18 views

Can an R^2, or coefficient of determination be used on non-linear data?

I have used the $R^2$ metric to determine how well my neural network performs a non-linear regression. And it seems to work. The plots look almost identical, and I get an $R^2$ value of 0.93... it ...