Data cleaning: Difference between revisions

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16 bytes added ,  20 September 2019
counting
(counting)
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Excel:  
Excel:  
* [http://superuser.com/questions/307837/how-to-count-number-of-repeat-occurrences microsoft excel - How to count number of repeat occurrences - Super User] {{exclaim}} long number issue: [https://superuser.com/questions/783840/countif-incorrectly-matches-long-number microsoft excel - Countif incorrectly matches long number - Super User]
* [http://superuser.com/questions/307837/how-to-count-number-of-repeat-occurrences microsoft excel - How to count number of repeat occurrences - Super User] {{exclaim}} long number issue: [https://superuser.com/questions/783840/countif-incorrectly-matches-long-number microsoft excel - Countif incorrectly matches long number - Super User]
=== Other ===
* symbol e.g. data-mining or data_mining
== Counting ==


=== Counting number of occurrences (or frequency) of string ===
=== Counting number of occurrences (or frequency) of string ===
Cygwin
Cygwin
* (1) separate each string by [[Return symbol | return_symbol]] (2) [https://www.computerhope.com/unix/uuniq.htm uniq command] on Cygwin of {{Win}} or {{Linux}}: {{kbd | key=<nowiki>sort <file.txt> | uniq -c</nowiki>}}<ref>[https://unix.stackexchange.com/questions/134446/counting-the-occurrences-of-the-string text processing - Counting the occurrences of the string - Unix & Linux Stack Exchange]</ref>
* (1) separate each string by [[Return symbol | return_symbol]] (2) [https://www.computerhope.com/unix/uuniq.htm uniq command] on Cygwin of {{Win}} or {{Linux}}: {{kbd | key=<nowiki>sort <file.txt> | uniq -c</nowiki>}}<ref>[https://unix.stackexchange.com/questions/134446/counting-the-occurrences-of-the-string text processing - Counting the occurrences of the string - Unix & Linux Stack Exchange]</ref>
=== Other ===
* symbol e.g. data-mining or data_mining


== Outlier / Anomaly detection ==
== Outlier / Anomaly detection ==

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