subset

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Partition a Set into k Disjoint Subset

Give a Set S, partition the set into k disjoint subsets such that the difference of their sums is minimal.[详细]

2023-02-20 18:39 分类：问答
subsetting in data.table

I am trying to subset a data.table ( from the package data.table ) in R (not a data.frame).I have a 4 digit year as a key.I would like to subset by taking a series of years.For example, I want to pull[详细]

2023-02-20 15:10 分类：问答
subselection dataframe

I have a simple questioon I think. In my dataframe I would like to make subset where column Quality_scoreis equal to: Perfect, Perfect*, Perfect*, Good, Good** and Good***[详细]

2023-02-18 02:52 分类：问答
Calculating the occurrences of numbers in the subsets of a data.frame

I have a data frame in R which is similar to the follows. Actually my real ’df’ dataframe is much bigger than this one here but I really do not want to confuse anybody so that is why I try to simpli[详细]

2023-02-17 04:25 分类：问答
Data structure for querying whether a given subset exists in a collection of sets

I\'m trying to build a data structure for a word game solver. I need to store about 150,000 sets of the form {A, A, D, E, I, L, P, T, V, Y}. (They are normalized English words, i.e. ch开发者_运维知识[详细]

2023-02-15 10:28 分类：问答
Return a subset of Array using index C#

What is the best way to return a subset of a C# array given a fromIndex and toIndex?开发者_开发知识库[详细]

2023-02-15 08:59 分类：问答
How to drop columns by name in a data frame

I have a large data set and I would like to read specific columns or drop all the others. data <- read.dta(\"file.dta\")[详细]

2023-02-15 08:07 分类：问答
How can I plot subsets of temporal data?

I have input data, and subset it in order to look at only rows with an entry of 4 or 5 in a column called CODE.Next, I subsetted this data in order to be able to look at a particular species.Then, I m[详细]

2023-02-14 11:36 分类：问答
Getting a subset of an R data frame using values in the order vector

I have a vector of correlation scores myCorVector which contains a range of values from 1 to -1. The vector myCorVector has a score for each row of a data frame myDataFrame.[详细]

2023-02-13 09:01 分类：问答
How to select a subset from a DataTable through LINQ?

I am new to LINQ. I have the following DataTable NameDateprice1price2 string DateTimedecimal decimal Jan0914.01.2009开发者_运维百科 10.012.0[详细]

2023-02-11 01:49 分类：问答