Which is a lucid standard comprehensive book to guide on psychological scale construction and its standardization?

02 March 2021 7,082 3 View

What test should I use to compare two or three means, if data is not normally distributed but sample size is > 30 in each group?

I personally feel this as a most confusing question. As per my understanding, if sample size is > 30, and sample is skewed, we can still use paramteric approach, as it will follow Z...

01 March 2021 1,587 6 View

How to calculate Ligand-active site distance in a ligand-protein complex from MD simulation?

I have run a MD simulation of a ligand-protein complex in GROMACS using CHARMM forcefield. Reviewer has asked me to calculate Ligand-activesite distance and binding free energy of ligand with...

27 February 2021 4,703 1 View

Can anyone share his experience regards Smoothing in origin?

I am working on TiO2 composite material and the results of XRD have a lot of small/junk peaks and while I apply a smooth filter in Origin then the other characteristics peaks disappear so anyone...

26 February 2021 8,183 3 View

Efficiency of Proximity Feed Patch Antenna ?

Greetings to all of You! I have searched some research papers for the designing of a proximity coupled patch antenna. Researchers are talking about the impedance bandwidth of the antenna but...

24 February 2021 7,662 3 View

Genescan gives 3 peaks instead of one?

Hi all, I am doing a genescan analysis for a deleted exon in the patient sample. The amplified region is 215 bp. In the patient sample because of homozygous deletion, no peak is observed while in...

23 February 2021 5,645 1 View

Please help in identification of this insect?

This insect is minute in size around 1 mm and not clearly visible with naked eye.

22 February 2021 5,907 11 View

How can I retrieve FASTA sequence from gene ID or UID of a Gene ? I have GeneBank IDs ?

I treid to use Entrez Batch, but it redirects me to NCBI site. Is there any script of Linux or Python through which I can download Fasta sequence of list of gene ID ?

21 February 2021 7,783 12 View

Not able to charge-discharge Li-ion coin cell at higher C rate ?

I am working on cathode material. I have made different Li-ion coin cell against Li metal using commercial available cathode materials such as LCO,LMO, LFP and NMC and also with the lab...

18 February 2021 1,450 3 View

What is causing the raw fluorescence to be negative?

Hi everyone, I would really appreciate it if someone can tell me when and why a raw fluorescence starts below zero. In the picture attached below the blue colour curve starts from a negative...

09 February 2021 4,642 3 View

How to do mono formylation of N,N-diethyl-3-methoxybenzamide?

I have attempted the formylation of the above mentioned compound using a very well reported protocol using secondary Butyl Lithium and TMEDA at - 78 degrees Celsius. I have done it quite a few...

08 February 2021 2,793 2 View

How can we apply svm for multiple classes?

for a dataset with 5 categorical classes , what would be the be the best classifiers ? size of data (670,49)

04 January 2021 5,187 6 View

Why accuracy over each k-fold corssValidation differ alot?

I have a data set with 91 Obervsation with 700 features. I have reduced the dimension of data using PCA? then I split the data set into 70/30. After that applied kfold =10 cross-validations on...

04 December 2020 1,259 4 View

LDA with another classifier?

I know that LDA can be used for classification, but I only want to use it for dimension reduction and then I would use another classifier (naive bayes, neural network etc) on LDA coordinates /...

23 July 2020 2,708 3 View

How do I make sure that all levels of a factor is resampled evenly during a train / test portion of LDA in R?

I am attempting to create train and test data for an LDA. I keep getting an error message that my test and train data have different levels of different factors for one of my factors. Here is the...

16 June 2020 8,968 3 View

What is the best way to graph an SVM classification in R or Python?

I'm trying to find a way to graph a classification made by the support vector machine algorithm. Something like a PCA or LDA chart would be excellent. Any help will be welcome.

26 April 2020 4,588 1 View

How to deal with pseudoreplicates in linear discriminant analysis?

Within a project about geographical traceability of horticultural products, we would like to apply classification models to our data set (e.g. LDA) to predict if it is possible to correctly...

13 February 2020 1,358 3 View

How good are topic modelling techniques for finding main aspects on short text like tweets?

To perform aspect-based sentiment analysis we first need to extract aspects or say topics short text like tweets. Will techniques like LDA give up to the mark performance for this kind of topic...

01 February 2020 7,474 3 View

PLS-DA or LDA for NIR analysis?

I was wondering, for discrimination or classification propose is better use LDA instead PLS-DA in NIR data?. What analysis will works better in this kinds of data?. And why? Thanks so much in...

15 October 2019 8,409 8 View

PLS-DA or LDA for NIR analysis?

I was wondering, for discrimination or classification propose is better use LDA instead PLS-DA in NIR data?. What analysis will works better in this kinds of data?. And why? Thanks so much in...

09 October 2019 1,430 9 View