Slides of talk at HistoInformatics '16 Presenters: Melvin Wevers & Pim Huijnen

1. Visualizing Concepts overTime
Translantis Project
Digital Humanities Approaches to Reference
Cultures: The Emergence of the United States
in Dutch Public Discourse 1890-1990
Carlos Martinez-Ortiz,Tom Kenter, Melvin Wevers,
Pim Huijnen, JaapVerheul, and Joris van Eijnatten
DESIGN AND
IMPLEMENTATION OF SHICO

2. SHICO: SHIFTING
CONCEPTS OVERTIME
• The emergence and transformation of
concepts, ideas, and thoughts
• How can we study concepts in large
digitized corpora?

3. OUR APPROACH
• Data: >600.000 digitized
newspaper issues from the
Dutch National Library
• Multi-dimensional word-
vector space using Google’s
word2vec (word embeddings)
• Semantic and syntactic
information representation by
geometry (Baroni &
Kruszweksi, 2014;Wijaya &
Yeniterzi, 2011)
1950 1960 1970
1 model = 10 years
40 models for period
between 1950-1990

4. TRACING CONCEPTS
• Concept is a network of words
• Find closely related words to seed word
based on distance
• One or more words as entry-points into
concept
• Weighting based on frequency + sum distance
• Tracing concepts: which words remain and
disappear from network
• See: Kenter,Wevers, Huijnen, de Rijke (2015)
“Ad Hoc Monitoring of Vocabulary Shifts
over Time”
expand to
semantic graph
with
semantic space
for time t+1
vocabulary at time t
prune
t = t + 1

5. VISUALIZATION
• ADD SCREENSHOT INTERFACE

6. THREETYPES OF
VISUALIZATIONS
• Stream Graphs
• Network Graphs
• Vocabularies (lists of words in
network)

7. Propaganda: Adaptive & Non-Adaptive

8. Non-adaptive Model
Adaptive Model
Propaganda: Adaptive & Non-Adaptive

9. Propaganda: Adaptive & Non-Adaptive

10. DOPING: STREAM GRAPH

11. DOPING:VOCABULARIES

12. DOPING: NETWORK GRAPHS

13. INTEGRATION

14. DO-IT-YOURSELF
• Code / how-to-manual is on Github:
• https://github.com/NLeSC/ShiCo
• Models are also on Github
• Easy to integrate into other tools

15. Thank you!