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Data Science

Fall 2021 - Section 001 - Aleksi Aaltonen

Data Science

MIS 0855.004 ■ Spring 2023 ■ Aleksi Aaltonen
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Blog

MapReduce and Hadoop Technology

March 22, 2023

Here is a simple introduction to the concepts behind MapReduce and Hadoop Big Data technologies.

https://youtu.be/43fqzaSH0CQ

Note that the products themselves are less interesting than the idea of how we can process huge amounts of data effectively.

Filed Under: Blog

Key Performance Indicator

March 22, 2023

Wikipedia has fairly good articles on KPIs (https://en.wikipedia.org/wiki/Performance_indicator) and the SMART criteria (https://en.wikipedia.org/wiki/SMART_criteria).

Filed Under: Blog

Relative vs. Absolute Cell References in Excel

March 15, 2023

Here is a short clip explaining how relative cell references differ from absolute cell references in Excel.

Here is also a link to my Excel demo spreadsheet.

https://youtu.be/iDg9s7BJ2m4

Filed Under: Blog

What is a Relational Database?

March 15, 2023

This video demonstrates differences between a relational database and an Excel spreadsheet for storing data:

https://youtu.be/iKK3P11OCyM

Filed Under: Blog

How Bad Data Ruins Your Day

March 1, 2023

Here are some of my favorite horror stories how things went wrong due to bad data:

https://www.simscale.com/blog/2017/12/nasa-mars-climate-orbiter-metric/

(A blog post with examples – including the classic NASA mishap – of how things go wrong when people get data types wrong.)

Filed Under: Blog

Infographics

February 18, 2023

Differences between infographics and data visualizations are discussed in this blog post:

https://www.statsilk.com/blog/real-difference-between-infographics-and-data-visualizations

We use Piktochart to create an infographic on MIS0855, but there a numerous other web-based tools available:

https://www.creativebloq.com/infographic/tools-2131971

Filed Under: Blog

Beware of Online Filter Bubbles

February 1, 2023

An old but still relevant TED talk by Eli Pariser on how the web is being inconspicuously personalized for individual tastes creating bubbles of like-minded people.

…and its critique:

https://slate.com/news-and-politics/2011/06/eli-pariser-s-the-filter-bubble-is-web-personalization-turning-us-into-solipsistic-twits.html

…and a more recent take on the topic:

https://www.theverge.com/interface/2019/11/12/20959479/eli-pariser-civic-signals-filter-bubble-q-a

Filed Under: Blog

A Simple Vocabulary of Data Science Concepts

January 25, 2023

A short summary of important data science concepts we discuss during the course in Aleksi Aaltonen’s blog:

https://aleksiaaltonen.medium.com/a-simple-vocabulary-of-data-science-concepts-dc29c633f5ee

It’s just 2 min read and gives you an overview of many important concepts we will discuss during the semester.

Filed Under: Blog

Correlation without Causation

January 24, 2023

Here are some brilliant examples of correlations that surely do not indicate causation!

https://www.tylervigen.com/spurious-correlations

Filed Under: Blog

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Lecture recordings

Recordings of our sessions are available from here.

Recent Announcements

  • Groups!
  • Submit Your Individual Assignment 2
  • Extra Office Hours!
  • MapReduce and Hadoop Technology
  • Key Performance Indicator

TEACHING TEAM

Aleksi Aaltonen (Instructor)
aleksi@temple.edu

I am available to meet students on Wednesdays 2–3pm at Speakman 206D. If the time is not convenient for you or you want to meet virtually using Zoom, please send me an email.

Rhiannon Adeel (Information Technology Assistant and B4USoar mentor)
radeel@temple.edu

Email Rhiannon to arrange a meeting. Zoom link: https://temple.zoom.us/j/3979325337

Great Data Sites

  • FiveThirtyEight
  • Guardian Data Blog
  • Flowing Data
  • Financial Times Data Blog
  • Pew Research Data
  • US Government Open Data
  • OpenDataPhilly

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