Online Tools

This page offers some useful online tools for text processing and other tasks.

Text tools

• Count how many words, lines and characters in a text
• Convert text case
• Remove empty lines and extra white spaces from a text
• Remove all line breaks from a text
• Sort lines from a text in ascending or descending order
• Compare two text files
• Calculate the frequency of each word in a text
• Calculate the frequency of each ngram in a text
• Draw the frequency distribution of words in a text file (using chart.js)

Latex tools

• Remove all lines that starts with % in a Latex text
• Remove all lines that starts with % and \cite{...} tags in a Latex text
• Insert a line break after each sentence in a Latex document.
• Merge two Latex Bib files
• Sort and filter entries from a Latex Bib file
• Draw a Latex Equation (using mathjax.js)
• Latex Editor (using ace.js)

Java tools

• Automatically indent Java code

Pattern mining tools

• Generate all subsets of a set
• Generate all substrings of a string (without gaps)
• Generate all possible association rules from an itemset
• Draw an FP-Tree
• Convert a horizontal database into a vertical database (simple tool to illustrate these concepts)
• Calculate the number of itemsets and association rules that can be created with a number of items
• The Naive Itemset Generator version A (find frequent, maximal or closed itemsets - using a naive algorithm to illustrate these concepts)
• The Naive Itemset Generator version B (find frequent correlated itemsets with their support, bond and all-confidence - using a naive algorithm to illustrate these concepts)
• Draw the Hasse diagram of a powerset
• Convert a Text to SPMF format (online tool)
• Generate a Synthetic Transaction Database in SPMF format (online tool)
• Generate a Synthetic Sequence Database in SPMF format (online tool)
• Apriori Algorithm Interactive Demo
• Eclat Algorithm Interactive Demo
• Calculate the utility of an itemset
• Calculate the utility-list of an itemset

Clustering tools

• K-Means algorithm Interactive Demo

Classification tools

• KNN algorithm Interactive Demo

Tools for researchers

• The Paper Review Generator
• Generate acronyms from a list of words

Math tools

• Draw a frequency histogram (using chart.js)
• Draw normal distributions

Music tools

• Pentatonic scale generator for guitar
• Online metronome

Other

• Password generator

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© Philippe Fournier-Viger, 2023