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Fundamentals of Social Data Science

MSc in Social Data Science - Unviersity of Oxford, Michaelmas 2019

This is the course repository for the introductory python course in Oxford's Social Data Science program.

This teaches some of the skills needed to begin working in social data science. This focuses first on programming skills in Python. It includes some key basic programming skills, such as lists and functions, as well as more abstract and complex topics like API access, file types, text processing, and DataFrames.

Data science is an emerging discipline concerned with the processing and management of data. Because data is now so prevalent, complex, and volumous, there is a niche for those with specific skills in data processing. Data science has four pillars: theory, data access, data wrangling and data analysis.

This course only goes into very rudimentary detail on theory and analysis. Theory in our degree program is taught through the course "Foundations of Social Data Science". Analysis is partially taught with a focus on descriptives. Undoubtedly, a degree in data science is steeped in statistics. However, in this course statistics are used sparingly. Instead, they are taught in depth in two separate courses: Statistics for Social Data Science and Intro to Machine Learning.

The repository

This is the repository for 2019-2020 course, which consists of three main folders:

  • course work,
  • assignments,
  • supplementary data (public). These will be created and populated as time goes on and fully released once the course has completed.

About this course

Some of the information about programming in the course is partial. It's not meant to be incorrect, but we are definitely omitting or papering over certain topics for brevity's sake. The goal here is to get students the skills and wisdom to put a study together for analysis and publication. In that sense, this course is a little more directed but also more concise than a repository such as Jake Vanderplas' Python for Data Science. Jake's repository, by contrast appears to be much closer to emphasizing completeness. For what it is worth, both this course and Jake's book benefit from prior knowledge of Python as found in the Whirlwind tour of Python, which can be read as a series of Python notebooks over at GitHub.

You will also notice various Muppet-themed examples throughout the course. As a television show, The Muppets offer an extensive amount of accessible data, from episode guides to wikipedia profiles on characters. This can help give is a flavor for high dimensional data while steer a little clear of some complex theoretical issues that are sure to arise in a more focused and sustained project.

How to run these files

The course is written almost entirely in Jupyter notebooks. We recommend downloading the Anaconda package for scientific python, installing it and then launching the Anaconda Navigator. This navigator provides access to a host of scientific programming tools and particularly to Jupyter Lab. Run Jupyter Lab and then navigate to a folder that includes the .ipynb files.

If you do not have Jupyter Lab installed, then you can just click on the files in GitHub which will render them. They will not be interative but you will still be able to read them.

Readings

Core Texts

Russel, M & Klassen, M. 2019. Mining the Social Web, Third Edition. Sebastopol, CA: O’Reilly Press. [MtSW]

McKinney, W. 2017. Python for Data Analysis, Second Edition. Sebastopol, CA: O’Reilly Press. [PfDA]

Matthes, E. 2016. Python Crash Course. San Francisco: No Starch Press. [PCC]

Note that the O'Reilly books can be read freely online at http://learning.oreilly.com/. You will need to go register with your Oxford email address.

Optional Reading

Bird, S., Klein, E., & Loper, E. Natural Language Processing with Python. Sebastopol, CA: O’Reilly Press. Python 3 version available online: https://www.nltk.org/book/

Knuth, D. 1997. The Art of Computer Programming, Third Edition. Vol. 1: Fundamental Algorithms. New York: Addison Wesley. See: https://www-cs-faculty.stanford.edu/~knuth/taocp.html

Manning, C., Raghavan, P., and Schütze, H. 2009. An Introduction to Information Retrieval. Cambridge University Press. Avilable online: https://nlp.stanford.edu/IR-book/pdf/irbookonlinereading.pdf

Van Der Plas. 2016. Python Data Science Handbook. Sebastopol, CA: O’Reilly Press.

Useful code repositories and URLs

Course Outline

Week 0. Preliminary work

Prior to the start of class we will be holding a refresher on the topics featured in the pre-course notebook, found in this repository. This is about very basic use of Python.

Week 1. Introducing Python and Data Science

The first week ties some of the basic skills of Python programming to ways of thinking about the organization of data and the means to make claims from this data. We do not simply treat this as basic Python syntax but as ways of thinking how to categorize, order, and abstract from the world around us.

Week 2. The DataFrame as Key Research Tool

The DataFrame is an indispensable part of data science research in Python. This week I introduce the Series and the DataFrame. I first show how to create, query, and modify these data structures. I then show how to get data into a DataFrame via various files formats. The third lecture is on how to merge and aggregate DataFrames.

Week 3. Data Cleaning and Exploration

This week we learn about ways in which to clean, reshape, and explore data. We will parse files, explore visualisation, and take data that is skewed and rescale it so that we can make more sense of it.

Week 4. Collecting Data from the Web

Sometimes the web is a direct source of data for your research design. Sometimes it is simply the place where data is stored that you want to download. Approaches to collecting this data represent different relationships between the researcher and the data controller. Some approaches suggest a dialogue with the data controller (through registration, budgeted queries, authentication, etc.), while other approaches suggest a more passive approach of just downloading what is given. This week merely scratches the surface of what’s possible in either circumstance, but provides some means to understand how to authenticate for a data repository and how to work on a server for continuous uptime.

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