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Natural Language Processing

Stemming and Lemmatization using NLTK

This Jupyter Notebook showcases the different ways of stemming and lemmatization a text using nltk.

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Visualization

Statwing

Statwing is an easy-to-use, web-based tool for data analysis and visualization. Upload data, select variables of interest, and Statwing automatically selects statistical tests and visualizations, then distills the results into plain English sentences (as well as traditional statistical output for those so inclined). Free trial available, as well as multiple pricing plans: Statwing Silver — $50/month (unlimited datasets up to 50 MB each) Statwing Gold — $100/month (unlimited datasets up to 500 MB each) Statwing Enterprise — Inquire for cost (unlimited datasets up to 5 GB each, optional on-premise deploy)

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Analysis

Statistical Package for the Social Sciences (SPSS)

SPSS is software for managing data and calculating a wide variety of statistics. It delivers a robust set of features that lets your organization extract actionable insights from its data.

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Analysis

Statistical Lab

Statistical Lab is a graphical user interface designed to make statistical analysis easier to understand. This interactive tool will connect and display data frames, frequency tables, random numbers or matrixes. Statistical Lab uses R to run calculations, conduct analyses and perform multiple simulations and manipulations.

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StatCrunch

StatCrunch is web-based statistical analysis and data-sharing software.

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Natural Language Processing

STASEL (Stylistic Treatment at the Sentence Level)

STASEL (Stylistic Treatment at the Sentence Level) is a historically important program designed to analyze text. It was intended for language and style instruction, but had research-based applications.

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Natural Language Processing

STAP

STAP (State Transition Network Analysis Procedure) was a program for parsing developed in the 1960s. It could determine correct parsing by following all possible branches until all possibilities permitted by its ruleset were exhausted.

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Visualization

Stanford Vis Group: Protovis

Protovis is a free, open source tool for composing custom views of data from simple elements such as bars or dots. Marks are defined through dynamic properties to allow inheritance, scales and layouts for simplified visualization construction. This tool uses JavaScript and SVG in order to ensure web-native visualizations. Protovis is no longer under active construction; many of the concepts used in its development have been implemented in its successor, D3.js.

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Analysis

Stanford Vis Group: Data Wrangler

Data Wrangler is free web-based tool for interactive data cleaning and transformation. It takes raw data and transforms it into data tables for further analysis and cleaning. The results can be exported in a variety of data table formats, including Excel, R, Tableau and Protovis.

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Natural Language Processing

Stanford Sentiment Analysis

The Stanford NLP Group's Sentiment Analysis tool is a free, web based live demo based on a sentiment analysis treebank, trained to predict the sentiment in movie reviews. Users can test out the sentiment analysis model with their own text in the box provided. The dataset and code is available for download, and the sentiment analysis model is now integrated into Stanford CoreNLP.

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