Matrices In R, matrices are an extension of numeric or character vectors. All columns in a matrix must have the same mode and the same length. Also, similar to atomic vectors, the elements of a matrix must be of the same data type. The general representation of a matrix is shown in th...
As more degrees of freedom, n, are added to a problem, the growth in memory and processing time can be O(n2) and O(n3), respectively.doi:10.1007/978-1-4612-0351-3_8Reid PinchbackBirkhauser Boston Inc.
I introduced methods to measure which part of a given code is slow. The second part lists general techniques to make R code faster. The third part deals with parallelization. In this part we are going to have a look at the challenges that come with large datasets. ...
weitrix GitHub page Documentation site This is an R package for working with matrices with precision weights. BiocManager::install("weitrix") Bleeding-edge development can be installed from github with: BiocManager::install("pfh/weitrix")
To test this hypothesis, we constructed two parallel versions of a task that requires WM updating: one with neutral and the other with emotional stimuli. In addition, performance-based measures of both gF and EI were used in the research. Using the structural equation approach, we sought to ...
R, just like other programming languages, has different types of objects. Matrices, arrays, data.frames, lists, vectors, tables, etc. But by far the most important for working with baseball data is going to be dataframes.I'm not sure of the level of ex..
In a microarray experiment, the data set often contains one or more matrices that have the same number of rows and columns and identical row names and column names. ExptData class is designed to contain and coordinate one or more data matrices having identical row and column names with the ...
[26]Raven J (1998) Manual for Raven's progressive matrices and vocabulary scales. Oxford: Oxford Psychologists. [27]Piper BJ, Li V, Eiwaz MA, Kobel YV, Benice TS, et al. (2012) Executive function on the Psychology Experiment Building Language tests. Behav Res Methods 44: 110–123. ...
Streamlines with a length of <10 mm were removed75. For the construction of structural connectivity matrices, the brain was parcellated into 374 regions (seeSupplemental Information). To map these parcellations into subject space, we applied a nonlinear registration implemented in DSI Studio. We...
Control processes associated with working memory play a central role in human cognition, but their underlying dynamic brain circuit mechanisms are poorly understood. Here we use system identification, network science, stability analysis, and control theo