Using OpenRefine
Cód:
491_9781783289080
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With this book on OpenRefine, managing and cleaning your large datasets suddenly got a lot easier! With a cookbook approach and free datasheets included, youll quickly and painlessly improve your data managing capabilities.Key FeaturesCreate links between your dataset and others in an instantEffectively transform data with regular expressions and the General Refine Expression LanguageSpot issues in your dataset and take effective action with just a few clicksBook DescriptionData today is like gold - but how can you manage your most valuable assets? Managing large datasets used to be a task for specialists, but the game has changed - data analysis is an open playing field. Messy data is now in your hands! With OpenRefine the task is a little easier, as it provides you with the necessary tools for cleaning and presenting even the most complex data. Once its clean, thats when you can start finding value.Using OpenRefine takes you on a practical and actionable through this popular data transformation tool. Packed with cookbook style recipes that will help you properly get to grips with data, this book is an accessible tutorial for anyone that wants to?maximize the value of their data.This book will teach you all the necessary skills to handle any large dataset and to turn it into high-quality data for the Web. After you learn how to analyze data and spot issues, well see how we can solve them to obtain a clean dataset. Messy and inconsistent data is recovered through advanced techniques such as automated clustering. Well then show extract links from keyword and full-text fields using reconciliation and named-entity extraction.What you will learnImport data in various formatsExplore datasets in a matter of secondsApply basic and advanced cell transformationsDeal with cells that contain multiple valuesCreate instantaneous links between datasetsFilter and partition your data easily with regular expressionsUse named-entity extraction on full-text fields to automaticall
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