logo
down
shadow

Grouping string variables from a dataframe by best string match to make subsets


Grouping string variables from a dataframe by best string match to make subsets

By : Phil P
Date : November 21 2020, 03:00 PM
Hope this helps I have a dataframe with a column with names of countries. Those names are written different even when they are the same country for example, there are differences in lower-upper cases, some letters missing, some extra letters and son on. , Working for you sample data set by using stringdist::phonetic
code :
library(stringdist)
example$ph=phonetic(example$country)
example
  number    country   ph
1      1     Brasil B624
2      2     brazil B624
3      3 Costa Rica C236
4      4 costarrica C236
5      5      suiza S200
6      6    Holanda H453
out <- split(example,f = example$ph )
out
$B624
  number country   ph
1      1  Brasil B624
2      2  brazil B624

$C236
  number    country   ph
3      3 Costa Rica C236
4      4 costarrica C236

$H453
  number country   ph
6      6 Holanda H453

$S200
  number country   ph
5      5   suiza S200


Share : facebook icon twitter icon
How to match against subsets of a search string in SOLR/lucene

How to match against subsets of a search string in SOLR/lucene


By : Patrik Murín
Date : March 29 2020, 07:55 AM
I hope this helps you . It sounds like you want to use ShingleFilter in your analysis, so that you index word bigrams: so add ShingleFilterFactory at both query and index time.
At index time your documents are then indexed as such:
Converting number within vector subsets to match string rows

Converting number within vector subsets to match string rows


By : SMS GATEWAYHUB
Date : March 29 2020, 07:55 AM
I hope this helps . Suppose I have a list of vectors (s) containing sublists of integers. , Perhaps:
code :
lapply(s,  function(i) originaldf[ i[ i %in% 1:length(originaldf) ] ] )
s <- list(c(23, 900, 1800, 42, 87), c(54, 8777, 13, 1, 2, 3))
origninaldf <- 

structure(list(nam = structure(c(2L, 3L, 1L), .Label = c("123_Street", 
"Apple", "Apples"), class = "factor")), .Names = "nam", row.names = c(NA, 
-3L), class = "data.frame")

> lapply(s,  function(i) origninaldf[ i[ i %in% 1:length(origninaldf)] ] )
[[1]]
data frame with 0 columns and 3 rows

[[2]]
         nam
1      Apple
2     Apples
3 123_Street
Perl Regex match something, but make sure that the match string does not contain a string

Perl Regex match something, but make sure that the match string does not contain a string


By : Farzad
Date : March 29 2020, 07:55 AM
like below fixes the issue I have files with sequences of conversations where speakers are tagged. The format of my files is: , Here is a regex you can use to match what you describe:
code :
(<SPEAKER>John<\/SPEAKER>(?:(?!<SPEAKER>).)*<SPEAKER>Lisa<\/SPEAKER>.*)
Grouping row subsets of a dataframe in Python using Pandas

Grouping row subsets of a dataframe in Python using Pandas


By : Muhammad Farooq Shah
Date : March 29 2020, 07:55 AM
I wish this help you I have the following dataframe from a dataset containing 0.3 million rows:
code :
df.groupby(['CustomerID',df.CustomerID.diff().ne(0).cumsum()],sort=False)['Revenue'].sum().rename_axis(['CustomerID','GID']).reset_index().drop('GID',axis=1)
   CustomerID  Revenue
0     17850.0    26.40
1     13047.0    35.70
2     17850.0    20.34
3     13047.0    57.00
4     17850.0    35.64
5     13047.0    71.70
6     12583.0    80.40
7     13047.0    29.70
8     12583.0   131.40
grouping values of a dataframe with string

grouping values of a dataframe with string


By : Hans Langa
Date : March 29 2020, 07:55 AM
this one helps. Initialise a mapping of substrings to categories, then use str.extract to extract, and map to classify them:
code :
mapping = dict(zip(
    ['rrc', 'as1', 'as2', 'a2'], 
    ['msg1', 'msg2', 'msg3', 'msg4']))

df['category'] = (
    df['Message'].str.extract(r'(?i)({})'.format('|'.join(mapping)), expand=False)
                 .map(mapping))
df = pd.DataFrame({'Message': ['this is as1', 'abcd rrc', 'xyz as2']})
df

       Message
0  this is as1
1     abcd rrc
2      xyz as2

df['category'] = (
    df['Message'].str.extract(r'({})'.format('|'.join(mapping)), expand=False)
                 .map(mapping))
df

       Message category
0  this is as1     msg2
1     abcd rrc     msg1
2      xyz as2     msg3
Related Posts Related Posts :
  • Add jitter to box plot using markers in plotly
  • Adding an extra item to the legend
  • ggplot fills in data in the wrong order
  • Convert list to data frame
  • R: filtering by list(s) of strings and returning all results that start with the content of the lists
  • R:How to attach parts of a data frame with different headers and/or an overflowing piece of the dat frame
  • How to use 'par' for manipulating plot margins?
  • Can dplyr::case_when return mix of NAs and non-NAs?
  • Text preprocessing and topic modelling using text2vec package
  • Uploading multiple files in Shiny, process the files, rbind the results and return a download
  • R levelplot: color green-white-red (white on 0) according to one variable, but show the values of another variable
  • Why [i] doesn't point to the starting point in a vector
  • In R after generating a mvrnorm distribution, Y, what does Y[,1] do?
  • expand a data frame to have as many rows as range of two columns in original row
  • Getting started with R and CFA
  • Re order x-axis in ggplot so time goes from 12AM to 11PM in R
  • R - Automatically stack every nth column of a data frame and save them as new objects
  • How to format dplyr output in R into doubles (or other workable format)?
  • Dataframe to matrix conversion using tapply turns zeros to NAs
  • Smallest multiple of 1:20 - How can I make it quicker?
  • How to specify the size of a graph in ggplot2 independent of axis labels
  • How can I find the number of a vector's elements in another vector?
  • ROC curve from train/test set in caret R package
  • Random Forest for a mixture of categorical,numeric and "unwanted" variables which include missing values
  • extract certain data from multiple excel files with R
  • Matrix with counts of wins and losses between methods in R
  • Reorder does not work after adding second geom_points
  • cover POS data formate to the one can apply Arules (Apriori)
  • Matching values between data frames based on overlapping dates
  • Grouped bar chart turns into stacked bar chart ggplot
  • R: How to fill in NA Values within a Column based on grouping?
  • Two action buttons, but only the first one, that is written in the server file, works?
  • Barchart grouped by variable both count up to 100 percent
  • Converting time in R to 24 hours
  • R - Web scrapping and downloading multiple zip files and save the files without overwriting
  • Find month and year inside string
  • Append multiple csv files into one file using R
  • Use `purrr::map` with k-means
  • R - 'data' is not an exported object from 'namespace:my_package'
  • Sum vector with number by dinamic intervals without looping
  • Issues with ave function in R: error "cannot allocate vector of size 419 kb."
  • Shiny system call with continuous updates
  • Unable to un-nest some fields using google bigquery (standard)
  • How to perform row mean in matrix by 3 number of columns in sequence using R
  • Non absolute counts histogram for imbalanced groups
  • Plot_ly color not corresponding to z
  • Numeric calculations using dplyr piping commands
  • Separate a column with uneven/unequal strings and with no delimiters
  • Using lapply and which to subset dataframe by both characteristic and fuction
  • Removing factor levels from variable X based on values in Y
  • boxplot ggplot2::qplot() ungrouped and grouped data in same plot R
  • R: the x overlap in the graph
  • What's the difference between substitute and quote in R
  • Seq() producing numbers off by minute amounts (R)
  • adjusted R2 in plm package
  • Extend bars on a ggplot2 to show the data labels not squished
  • Sorting a Vector by ascending order
  • Subsetting with dplyr and lubridate
  • Difference in SECONDS between Sys.time() and origin ("1970-01-01 00:00:00 GMT"). R
  • R: How to print variable named "Q" in debug mode?
  • shadow
    Privacy Policy - Terms - Contact Us © voile276.org