4

2 months AGO
views

I have an error message when i tried to run the scripst andrews curves. The column vegetable is not recognized. I got he following error message: PythonWorker | ERROR: ‘Vegetable’ I would apprfeciate your helping me with that. Thanks…

1

4 months AGO
views

Hi everyone. Is there a way to obtain values of Cook’s distance in MLR? I am trying to identify influential observations by use of studentized residuals and Cook’s D statistics. This was kind of advised procedure for a specific problem I am currently dealing with. Thanks in advance.…

1

6 months AGO
views

I tried making the model with SVMR on my data set having 75% as training set and rest for external prediction the R squared value for calibration and cross validation were quite good, but how to get the R squared value for the Prection data set, I also tried copying the results into excel and [&hell…

1

6 months AGO
views

Greeting. Please, which option in Uscramblr 10.3 gives me: Equal scale in PLS predicted vs. measured plot. (I prefer sometimes equal scale instead of auto scale sometimes). Thanks for your cooperation.…

2

7 months AGO
views

In a univariate experiment one can add known amounts of an analyte to a sample. The equation of the linear regression line y=ax+b can then be extrapolated to where y=0. The concentration of the analyte is then equal to the absolute value of x. I like to use this method with near-infrared spectrome…

1

8 months AGO
views

Hello, Is it possible to do variable selection methods with the Unscrambler X program. I am working with ICP-MS data and want to calculate F-ratios for each element and subsequently perform degree of class separation to try and refine the elements i’m using within my PCA plots, for the purpose…

1

9 months AGO
views

Hello, is it possible to use a LDA directly on spectroscopic data without a PCA for data reduction? Does it make sense? In general there is always the combination PCA-LDA on spectroscopic data. In literature it is not usual just using the LDA directly. But are there any reasons besides the data redu…

3

9 months AGO
views

Hello, I have just begun to use Python script in Unscrambler 11, and I have created my first Random Forest Classification model. I have first crated the model with “RandomForestClassifierBuildModel”, then I applied it to data with RandomForestClassifierClassify”. Apparently all wen…

2

10 months AGO
views

Hi, I am new to NIR and Multivariate Data Analysis but i am getting better at it; i started using the Unscrambler software for my analysis and it seems to give good visualization and results. I like to ask few questions please. I am trying to use Cross-Validation and Test Set Validation methods f…

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## Latest replies

LeslieMetrics

New python script for classification performance metrics is now available. This includes generation of a confusion matrix, accuracy, sensitivity, specificity, etc. Access it from here: https://community.camo.com/?p=2120#classification…

New python script for classification performance metrics is now available. This includes generation of a confusion matrix, accuracy, sensitivity, specificity, etc. Access it from here: https://community.camo.com/?p=2120#classification…

External Admin

Remember to include the category variable and the spectral variables when selecting the input for the script. The category variable must be named 'Vegetable' in the column header.…

Remember to include the category variable and the spectral variables when selecting the input for the script. The category variable must be named 'Vegetable' in the column header.…

External Admin

Camo offers an Unscrambler plug-in for analysis of batch data. If you want to do batch-wise PLS analysis, you first have to perform batch modelling using this plug-in to convert the data into relative time (to solve for the challenge of having batche…

Camo offers an Unscrambler plug-in for analysis of batch data. If you want to do batch-wise PLS analysis, you first have to perform batch modelling using this plug-in to convert the data into relative time (to solve for the challenge of having batche…