networks: gephi with examples for medievalists and a ...djwrisley.com/presentations/wrisley fordham...

NETWORKS: GEPHI WITHEXAMPLES FOR MEDIEVALISTS(AND A LITTLE BIT OF PALLADIO)

@DJWrisleyFordham U Center for Medieval Studies, Dec 2014

FACEBOOK NETWORKS VIA@GRANDJEANMARTIN

December 2014 @DJWrisley

NETWORKS OF NEWSPAPERS 19TH

C VIA @RYANCORDELL


14TH C MEDIEVAL FRENCH (AROUND JEAN DEMEUN) – STYLOMETRIC ANALYSIS OF 70+ TEXTSJ RICHARDS (WUPPERTAL – GERMANY)


PLACES AND TEXTS – ANETWORK WITH GEPHI@DJWRISLEY


NETWORKS THEORY, ANALYSIS, VISUALIZATION

¢ Network analysis – a term encompassing a wide variety of practices with applications throughout (social) scientific and digital humanistic domains

¢ “Network theory concerns itself with the study of graphs as a representation of either symmetric relations or, more generally, of asymmetric relations between discrete objects.” (Wikipedia, 6 italicized words are mine—all debatable in humanist circles)

¢ Network theory has its own conceptual vocabulary to express relationships between objects (e.g. betweenness, centrality, density, path length, modularity) – how can we interpret these analytical terms for humanities data?


NETWORK THEORY, ANALYSIS, VISUALIZATION (2)

¢ Social network analysis SNA looks at relationships between actors – what is the nature of interaction?

¢ Latour adds objects in actor-network theory ANT – what could the relation of an actor and an object be?

¢ Networks once drawn (drawn by Moretti-Network Theory, Plot Analysis), are now digitally created and manipulated

¢ Powerful way of exploring multidimensional multi-scalar data (Brughmans)


@ELIJAHMEEKS ON THENETWORK

¢ "The network is not a social network or geographic network or logical network but rather a primitive object capable of and useful for the modeling and analysis of relationships between a wide variety of objects."

<https://dhs.stanford.edu/visualization/more-networks/>


THINKING ABOUTRELATIONSHIPS

¢ Three examples

¢ AIRLINE SCHEDULE

¢ RAMON LLULL (mystical text)

¢ MAASIR AL UMARA (Moghal biographical dictionary)


AIR ALGÉRIE TIMETABLEEXAMPLE 1


EXAMPLE 2RAMON LLULL, BOOK OF THE LOVERAND THE BELOVED (LATE 13TH) HTTP://WWW.AM.UB.EDU/~JMIRALDA/LLULLTRA.HTML


MAASIR AL UMARA (18TH INDIANBIOGRAPHICAL DICTIONARY) EXAMPLE 3


BASIC PRINCIPLES (1)¢ Not all study of networks is quantitative

(Brughmans on Malkin, 2011), just as every mapping is not made of spatial data onto a map interface

¢ Digital tools for network visualization and analysis use tabular data (quantification can be a challenge, metadata adds qualitative contours)

¢ Digital tools like Gephi allow both for networks to be explored visually, and for static visuals of them to be exported. It does not allow for sharing.

¢ Data visualization is a kind of “problem-posing”; we should avoid fetishizing the final visual. (McCosker/Wilke) – “diagrammatic” thinking


BASIC PRINCIPLES (2)

¢ Tabular data used by network vizplatforms are of two basic sorts� Nodes (discrete entities in a network, and

any fixed metadata about them – gender, geospatial data)

� Edges (specific instances of relations between nodes)

NB: Gephi does generate a nodes table if it is missing (option: create missing nodes)


LLULL DATA SNAPSHOTEXAMPLES@DJWRISLEY @TRACEPEDIANODES (LEFT) EDGES (RIGHT)


LLULL’S “SOCIAL” NETWORKS(@DJWRISLEY @TRACEPEDIA


LLULL “SOCIAL” NETWORKS, MINUS THE NARRATOR@DJWRISLEY @TRACEPEDIA


Fruchterman Force Atlas


JEAN GERMAIN UND SEINEMAPPEMONDE SPIRITUELLE(1449) ED. LEIST P. 103EXAMPLE 4


PALLADIO BASEDEVENT VS PLACE


PALLADIO EMPERORVS EVENT


A BRIEF COMPARISON

¢ standalone¢ open source¢ Established large user

community = many plug-ins

¢ Takes a while to learn¢ Science/humanities use¢ Not easy to share without

giving away data¢ Network statistics

¢ web-based¢ free¢ Relatively new¢ Learning curve low¢ Specifically for the

humanities¢ simple to deal with data

multi-dimensionality¢ Data is not kept¢ “without any barriers”

¢ (ALSO TRY NODEGOAT…)

Gephi Palladio


networks: gephi with examples for medievalists and a ...djwrisley.com/presentations/wrisley fordham...

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