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Learning Haskell Data Analysis [推广有奖]

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Nicolle 学生认证  发表于 2015-7-3 08:50:37 |显示全部楼层 |坛友微信交流群
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wb123456 发表于 2015-7-3 09:05:59 |显示全部楼层 |坛友微信交流群
Chapter 1 Summary

This chapter looked at Haskell from the perspective of a data analyst. We looked at Haskell's feature set (functional, type-inferred, and lazy). We saw how each of these features benefit a data analyst. We also spent some time getting acquainted with our environment, which includes the setting up of Haskell, cabal, Git, and tmux. We ended the chapter with a simple program that computes the median of a list of values and creates a function to find the vowels in a string.

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auirzxp 学生认证  发表于 2015-7-3 09:13:04 |显示全部楼层 |坛友微信交流群
Chapter 2 Summary

This chapter looked at Haskell data types from the perspective of data analysis. You are responsible for the conversions of data within Haskell. This is both a blessing and a curse. Haskell will never manipulate your data without your consent, even in those moments where some data manipulation can be forgiven. We also explored the task of navigating through three common data sources—the Haskell command line where you enter data yourself, csv files, and SQLite3 files. The command line is limited since we can only type so much data ourselves without getting tired. CSV files are the most common source of datasets found on the web. We also explored the difficulties in working with csv files; everything in a csv file is a String type and you, as an analyst, have to be dependent on the metadata that accompanies a dataset. We also explored SQLite3, which allows us to leverage two powerful worlds into an environment—functional programming and SQL. Using SQL will give us wonderful versatility over csv files, as we will demonstrate in forthcoming future chapters.

The next chapter will look at the necessary task of cleaning and organizing our datasets. We will look at Haskell's regular expression library in order to filter data based on specific properties of fields.

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Nicolle 学生认证  发表于 2015-7-3 09:29:16 |显示全部楼层 |坛友微信交流群
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Nicolle 学生认证  发表于 2015-7-3 09:30:04 |显示全部楼层 |坛友微信交流群
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Nicolle 学生认证  发表于 2015-7-3 09:30:48 |显示全部楼层 |坛友微信交流群
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Nicolle 学生认证  发表于 2015-7-3 09:31:29 |显示全部楼层 |坛友微信交流群
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Nicolle 学生认证  发表于 2015-7-3 09:35:14 |显示全部楼层 |坛友微信交流群
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Nicolle 学生认证  发表于 2015-7-3 09:39:17 |显示全部楼层 |坛友微信交流群
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