screening | An R package for efficient variable screening method | Machine Learning library
kandi X-RAY | screening Summary
kandi X-RAY | screening Summary
This package implements four popular variable screening algorithms, the sure independence screening1 (SIS), high-dimensional ordinary least squares projection2 (HOLP), rank-robust correlation screening3 (RRCS) and the Forward regression4 (FR) for efficient screening operation over large p small n models. SIS, HOLP and FR are implemented to work with both linear models and generalized linear models while RRCS works only for linear models. We refer the reader to the references and the R-help docs for detailed information.
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screening Key Features
screening Examples and Code Snippets
Community Discussions
Trending Discussions on screening
QUESTION
I have this DB for movie management in cinemas: FILM (ID_FILM, TITLE, DIRECTOR_NAME, PRODUCTION-BUDGET, RELEASE-DATE) SCREENING(ID_SCREEN, ID_FILM*, SCREEN_DATE, ROOM, City) SEEN (ID_SEEN, SPECTATOR_NAME, ID_SCREEN*, TICKET-PRICE).
I need to complete the Film type with the MySpectators method returning the whole (without duplicates) of its spectators. This is what I wrote for the signature and the body of this method :
...ANSWER
Answered 2021-Jun-04 at 00:33You haven't showed your DBACINEMA.TSET_REF_SEEN
, so I can only guess that is a collection and you need to use one more table()
:
QUESTION
I have a list of df lst1. I would like to generate an excel file for each subject ID and each file will contain mutiple sheets, which equal to the df in lst. And at the end, I would like to add label on top the col names from dfs in lst.
...ANSWER
Answered 2021-May-25 at 00:58We could transpose
after doing the match
with deframe
QUESTION
I have a list of df lst1
and a df for variable name and label Label
. How can I bind Label
with each df in lst
. I understand that all cols in lst
will be charters and won't be able to used again for analysis. But that is what I want. How should I do that?
ANSWER
Answered 2021-May-21 at 17:44For these sort of problems where you need to map names to names, I like to use named vectors (with the function setNames()
) the way you would use dictionaries in python. Then you can use it to extract the vector of labels that you want to prepend to each data.frame.
QUESTION
I try to write a function to filter a list that has muti df by ID and then add label to each dataset. However my codes did not work. Could anyone take a look of my codes and give me some guidance on what I did wrong? I am not that good working with list using map
.
My codes are:
...ANSWER
Answered 2021-May-20 at 19:49We could bind
the datasets first and then split
by 'SubjectID', loop over the list
of datasets with imap
and write to an excel file
QUESTION
I'm currently trying to create an analyzer that will match a part of a query. The main use case is with this term "3D mammogram", for some reason using my autocomplete analyzer down below, produces no results. Upon removing the "operator" : "AND" option, elastic started to return results but still the results that are expected are with less score for some reason.
Here are the settings and the mappings for my index:
MAPPINGS:
...ANSWER
Answered 2021-May-19 at 17:06Based on your index mapping and settings, the tokens generated for "Screening 3D mammogram"
will be
QUESTION
Sorry for such silly question. I have a df that looks like this:
I want to split tx with data.frame(do.call("rbind", strsplit(as.character(df$tx), "\\s{2,}" )), stringsAsFactors=FALSE)
, how can I keep Form
in the new df? Also, how can i avoid the split results auto fill if it is empty?
sample df can be build using:
...ANSWER
Answered 2021-May-15 at 03:34You can use splitstackshape::cSplit
:
QUESTION
Is it a way to tell what charToRaw() outcome means?
I have a df like this:
...ANSWER
Answered 2021-May-14 at 23:34We need sapply/lapply
QUESTION
I am trying to migrate to the new functional programming model for Spring Cloud Stream, replacing conditional StreamListener annotations like this
...ANSWER
Answered 2021-May-06 at 15:23I believe it's a bug. I opened an issue if you want to follow it:
https://github.com/spring-cloud/spring-cloud-stream/issues/2168
As a work around simply point it to the same destination
QUESTION
I have been using the R function gtsummary, but have now run into a problem with variables existing in subsets of each other. I have two screening tests that can independently be positive of one another which has created an issue with using by = with tbl_summary. This lead me to create two separate tables and combine them with the tbl_merge function.
However, I would like to calculate p-values for differences between the tests. Is there any way to do this with an object in the table_merge format or to extract information from it and calculate the statistics I need?
Per request, I post a code example from the mtcars database.
Example code ------------------------------------------------------------ ...ANSWER
Answered 2021-May-06 at 11:58I think the code example solves your problem. You'll need to supplement the code with a proper comparison of the two columns that takes into account that the two groups are not mutually exclusive.
QUESTION
Screenshot of Website with inspect element
I am trying to press the "Integrations" button by using
...ANSWER
Answered 2021-Apr-29 at 15:29You see there are class names. Use it if it's really unique.
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Install screening
A simple working example. Assume we observe 200 samples with 500 dimension, stored in x and y. Following code illustrates screening using a linear model. output$screen contains the indexes of the screened variables, which, in this case, is a 50-dimensional vector. If you opt to use extended BIC for determining the screening set, then simply replace the second line in the above code with. The package contains other two testing functions linearModelTest and logisticTest. The two functions provide integrated tests on the four screening methods. The full functionality includes simulating synthetic datasets and apply screening methods and report the result. Their codes also serve as good examples of using screening. For more detailed information, please refer to their R-help docs.
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