Can you help me with a natural language processing text tagging problem?

I have the following project where I need to tag news items with company names to which these news items are relevant to (company names are mentioned in the news items and in many cases, in the...

06 July 2014 7,904 17 View

Can anyone provide a survey article on algorithms in use for text tagging?

I am new to Natural Language Processing. I am wondering if someone can help me by indicating recent reviews/survey article(s) which deals with recent advancement in text tagging.

05 June 2014 4,277 4 View

How to sample a smaller data set from a very large data set ?

I have a very large dataset with dimension given by (203000 x 150), with some of the columns (attributes) have a very large number of missing values, denoted by NA. I need to sample a smaller...

08 September 2013 1,789 14 View

Regarding Prime numbers.

I happen to notice the following interesting property of some of the prime integers: For example, 13 and it's permutation, 31 are primes. 17 and it's permutation 71 are both primes. But not 19 ,...

03 April 2013 3,216 7 View

Is it always an integer ?

I am trying to figure out if the following expression: (n^2 - n)! / ( n! ((n-1)!)^n ) is an integer for all positive integer n. I tried the induction, but the induction case is running into...

31 December 2012 377 17 View

Is the product of k consecutive positive integers divisible by k! ?

I have checked several cases numerically and it works. I don't have a concrete proof. Does anyone have any thought on this to share ?

31 December 2012 2,966 80 View

Is there an R implementation of the HITON algorithm?

HITON is an algorithm for markov blanket discovery of a target variable. The algorithm first appear in this paper: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1480117/ I am looking for an R...

07 August 2012 3,666 2 View

Does anyone know if a causal relationship among methylation data has been worked upon already ? Does it make sense?

My expertise is in mathematics. I am not an expert in computational biology. So I may be wrong entirely.

03 April 2012 4,807 2 View

Non negative matrix factorization

Does anyone know how many different versions of the Non Negative Matrix factorization exist and what they are ? I did a Google search, but couldn't figure out any definitive answer.

03 April 2012 7,883 4 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View