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Data Visualization
1.
Data Visualisa*on purpose & risks 4 risks 50,000 tweets 6 years of Google trends Centre for Social Innova*on | Dr. Chris<an Voigt
2.
Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 2 Risk #1: Wie
lang dauert die Interpretation eines Chorddiagramms ? eine einfache Excel Tabelle wäre event. aussagekräftiger ... Ästhe<k vs. Funk<on Chord-Diagrams of ≈ 100 projects
3.
1st Problem, 2nd Data, 3rd Visualisa*on • Taxonomy Intro • Tweets & Co-words •
Wikipedia Access Stats • Google Trending Terms • Google related searches, • Emo<onal analysis Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 3
4.
Bloom’s Taxonomy of learning objec*ves Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 4
5.
Problem statement • Taxonomies are oQen ad hoc • … may lack empirical founda<ons (unclear origins) •
Approach tested: Can social media, google trends and access stats inform taxonomic structures? Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 5
6.
1st step: Selectors ü people: maker, hacker; ü places: makerspaces, hackerspaces, fablabs; ü ac6vi6es: DIY, 3d-prin<ng, making, hacking, maker_educa<on. … used as hashtags, search terms and wikipedia pages – ‘seed word’ concept. Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 6
7.
1st Taxonomic structures … how did we get there? Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 7
8.
CO-WORD ANALYSIS Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 8
9.
13,000 tweets with #3dprin*ng Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 9 Risk #2:
short time span & high impact events
10.
Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 10
11.
Required Steps in R • download tweets (specified by one or more hashtags, max 13.000, within last 7 days) • create corpus (i.e. combina<on of several text files) •
clean text (only alphabe<c chars, no numbers or brackets, no URL links or retweet– RT – or @names) • create term matrix (word by word matrix => gets huge) • remove sparse terms (i.e. very few combina<ons) • plot top 20 or top 30 co-words • also possible – clustering of words (Ward; k-means) ? • needed <- c ("twiheR", "tm”, "ggplot2”) • sapply(needed, require) Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 11
12.
WIKIPEDIA ACCESS STATS Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 12
13.
Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 13
14.
Some interpreta*ons • 'hackerspace’ are declining aQer 2013 • visits to 'maker_culture' page are increasing •
2013: publica<on of Chris Anderson's Makers: The New Industrial Revolu6on. • 2011 cover story from the Economist "Print me a Stradivarius" • no clear idea for decline of DIY aQer 2013 Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 14
15.
Required Steps in R • Read access stats • Plot diagram •
library (wikipediatrend) • library (ggplot2) Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 15
16.
GOOGLE TRENDING Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 16
17.
Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 17 Risk #3:
not specific enough
18.
GOOGLE RELATED SEARCHES Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 18
19.
Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 19 Risk #4:
Non-testable data generation
20.
EMOTION ANALYSIS – OUTLOOK Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 20
21.
Posi*ve emo*ons – Clear: 'Lots of great prac<cal <ps for crea<ng a library makerspace' (Eagerness) – Ambiguous: 'Huge thanks to Cargill Salt for approving our grant for our Maker-space. You're helping to foster crea<vity and innova<on!' (Liking) – False: 'Aleph objects opens new fulfilment center in Australia, offers free shipping - 3dprint.com ' (Fulfillment) Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 21
22.
Nega*ve emo*ons – Clear: 'thanks! I want to try... afraid I'll do most of the work in the minimal maker-space <me we have!' (Distress) – Ambiguous: 'Worried about #makerspace logis<cs? #fallcue is here to help! It's not just for tech! ' (Distress) – False: 'If kids can imagine it, they can build it! Perfect for blas<ng away boredom #makerspace' (Weariness) Centre for Social Innova<on | C. Voigt Data Viz & Taxonomies 22 Risk #4:
Unknown classification errors
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