Rolando Garcia

18 Questions 17 Answers 0 Followers

Questions related from Rolando Garcia

How to calculate protein-protein interactions using Piper and Desmond?

I'm performing protein-protein interactions using a Piper-docked pose and later Desmond, but I'm not seeing the expected residue interactions in the Desmond molecular dynamics (MD) simulation. Any...

07 October 2024 6,881 3 View

How do I advance to Docking parameters using HADDOCK?

I entered 3 molecules in the Input data tab to carry out Protein-DNA interactions (protein, chain C; DNA, chain K; DNA, chain L). In the input parameters, I entered the active residues of the...

25 January 2024 3,782 0 View

How to create a DocumentTerm matrix?

I'm trying to feed a corpus into a DocumentTermMatrix (dtm) to analyze, but I noticed that dtm doesn't keep all terms (for example, I have terms with parenthesis and semicolons that I would like...

03 November 2017 6,217 1 View

What is the best way to create a matrix from the most frequent terms (say 50) in a DocumentTermMatrix?

Im using the tm package and would like to create a matrix with the most frequent terms - say 50 in a DocumentTermMatrix.

16 May 2016 6,112 2 View

Does anyone know what version of R to run with EBImage package? Are there any other image packages in R?

Any other image processing and analysis package that one may use in R.

28 January 2016 5,360 6 View

Any suggestions on what kind of material can absorb or reflect a 9.2 GhZ radar frequency?

material that can absorb or reflect up to this frequency.

28 January 2016 4,397 3 View

Is anyone selling the MS5-DL1 stromal cell line feeder system?

I'm searching for the mouse stromal MS5 cell line that has been transduced with the NOTCH ligand delta-like-1 (DL1). Is it commercially available? Any other sources available out there that may...

13 August 2014 202 1 View

What is the optimal number of repetitions in neural networks?

Using R (nnet and neural net).

08 June 2014 3,951 1 View

What is the best way to deal with quasi-complete separation?

What is the best way to deal with quasi-complete separation of data points in a logistic regression?

06 May 2014 7,603 5 View

Can anyone help with goodness-of-fit and calibration?

Due to some drawbacks of the Hosmer-Lemeshow (H-L) goodness-of-fit test, what other alternative method to the H-L would you say does a better job in calibration of prediction models? Perhaps...

30 April 2014 6,002 3 View

Can anyone help with gene expression profiles (GEP)?

I'd like to run an analysis using different sets of GEP datasets / perhaps datasets from GEO using different platforms - all this in R. I once saw a similar post but I'm not able to find it.

26 April 2014 9,490 2 View

Hosmer-Lemeshow goodness of fit test

Can you still have a good model despite a p-value < .05 for the H-L goodness of fit test? Any alternative testing in SAS or R?

31 March 2014 2,767 2 View

What is the best R package to use for a Monte Carlo (MC) test of the accuracy of cluster analysis algorithms?

Any other open source tool that may be used for MC tests of the accuracy of cluster analysis?

16 February 2014 7,532 3 View

Stage 4 synovial sarcoma

What are the best treatments for stage 4 synovial sarcoma? Any publications you can recommend?

11 November 2013 6,003 3 View

Are there any Burkitt lymphoma cases with a bcl-2 positive (immuno-histochemistry) and abnormal cytogenetics?

Burkitt lymphoma

10 September 2013 4,614 2 View

What type of cluster analysis would you recommend for 50 variables?

Is R suitable for such analysis?

18 July 2013 655 1 View

Logistic regression: p value and odds ratio?

A logistic regression model: How can you explain a high p-value for a variable in a logistic regression (say .9587) with a point estimate (odds ratio) of >999.99. The variable has a strong...

30 April 2013 3,297 3 View

What is the best open source package for artificial neural networks?

Open source programs

12 February 2013 7,518 26 View