Comparing Spatial Hypertext Collections

Comparing
Spatial Hypertext
Collections
J. NATHAN MATIAS & DAVID WILLIAMS

Introduction
Diff in the Version Management Workflow

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Comparing Spatial Hypertext Collections Hypertext 2009 J. Nathan Matias & David Williams

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Introduction

Herrick

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Herrick Coleridge

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Herrick Coleridge

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Herrick Coleridge

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Herrick Coleridge

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Introduction

Slimy Things Did
Gather Ye
Crawl Upon The
Rosebuds
Slimy Sea


Introduction

Slimy Things Did
Gather Ye
Crawl Upon The
Rosebuds
Slimy Sea

DI FF!


WHY DO WE NEED
A SPECIAL APPROACH
FOR SPATIAL HYPERTEXT?


Why Spatial Hypertext is Special
One-Dimensional Diff

GNU DIFF


One-Dimensional Diff

ARAXIS MERGE



Two Dimensional



Two Dimensional

Internal Links



Two Dimensional

Internal Links

Color, and other visual
features



Two Dimensional

Internal Links

features

Implicit Structure



Two Dimensional

Internal Links

features

Implicit Structure

Hierarchy of Spaces
(sometimes)



Two Dimensional

Internal Links

features

Implicit Structure

Hierarchy of Spaces
(sometimes)

Mutable


Problems with Combined Views

VISUAL UNDERSTANDING
ENVIRONMENT


FOUR PRINCIPLES FOR COMPARING
SPATIAL HYPERTEXT COLLECTIONS

MULTIPLE VIEWS

DISTINCT PANES

DISPLAY DEPENDENCIES

CROSS-PANE INDICATORS


PRINCIPLE 1: PERMIT USERS TO
COMPARE MULTIPLE VIEWS


1: Comparing Multi-View Hypertexts

THREE
VIEWS
OF THE

SAME
THINGS



COLOR, FONT SIZE CHANGES:
OUTLINE VIEW



POSITION CHANGES NOT NOTED IN
OUTLINE VIEW

FONT SIZE CHANGES NOT NOTED IN
MAP VIEW


PRINCIPLE 1I:
DISPLAY COLLECTIONS DISTINCTLY


II: Display Collections Distinctly

INITIALLY: VERTICAL LISTS




CHANGED TO: COMPOSITE




CHANGED TO: COMPOSITE

OVERLAY RESULTS IN:
HORRENDOUS MESS

Comparing Position Differences

MOVEMENT: POSITION CHANGE
OF A SINGLE THING IS
EASILY UNDERSTOOD
WHEN OTHER THINGS
DO NOT CHANGE


Comparing Position Differences

MOVEMENT?
POSITION CHANGES
CAN ONLY BE UNDERSTOOD
BY COMPARING BOTH CONTEXTS


Comparing Link Differences

IMPLIED STRUCTURE OF LINKS
LINK SEQUENCE
BECOMES
CONNECTION BETWEEN LISTS
WITHOUT CHANGE TO THE LINK


& Side by Side

PRESERVES IMPLIED STRUCTURE

REQUIRES DETAILED HISTORY

CANNOT ASSIST MERGES


PRINCIPLE 1II: DISPLAY DEPENDENCIES FOR
TREE-STRUCTURED SPATIAL HYPERTEXT


III: Display dependencies for
Tree-Structured Spatial Hypertext

INITIAL STATE



INITIAL STATE

NEW & DELETED? RENAMED? MOVED?



INITIAL STATE

NEW & DELETED? RENAMED? MOVED?

MOVED!



DEPENDENCIES



Blake cannot become the
child of Swedenborg if it
is Swedenborg’s parent



Blake cannot become the
child of Swedenborg if it
is Swedenborg’s parent

Something else must
become the parent of
Swedenborg for Blake
to become its child.



Blake cannot become the The movement of Blake
child of Swedenborg if it to Swedenborg
is Swedenborg’s parent depends on Tennyson
becoming the parent of
Something else must Swedenborg
become the parent of
Swedenborg for Blake
to become its child.



DEPENDENCIES SHOWN



Dependencies are the most
complex calculation needed
for comparison.

That calculation is easy.


PRINCIPLE IV: IDENTIFY DIFFERENCE USING
INDICATORS WHICH CROSS VIEW PANES


IV: Identify Difference Using Indicators
Which Cross View Panes

IF ANY VISUAL INDICATOR COULD
BE IMPORTANT TO THE SPATIAL
HYPERTEXT,
HOW DO WE POINT OUT CHANGES?


IV: Identify Difference Using Indicators
Which Cross View Panes

IF ANY VISUAL INDICATOR COULD
BE IMPORTANT TO THE SPATIAL
HYPERTEXT,
HOW DO WE POINT OUT CHANGES?

INDICATORS CROSS PANE BOUNDARIES


Overview

PRINCIPLE I: PERMIT USERS TO COMPARE
MULTIPLE VIEWS

PRINCIPLE II: DISPLAY COLLECTIONS DISTINCTLY

PRINCIPLE III: DISPLAY DEPENDENCIES FOR
TREE-STRUCTURED SPATIAL
HYPERTEXT

PRINCIPLE IV: IDENTIFY DIFFERENCE USING
INDICATORS WHICH CROSS
VIEW PANES

Also In Our Paper

Web Dav
CAD

Visio


Future Research

MERGING SPATIAL HYPERTEXT


Future Research


TEXT & TRANSCLUSION ON THE SPATIAL MAP


Future Research



HISTORICAL LINKING


Future Research



HISTORICAL LINKING

NON-TREE STRUCTURES


Future Research



HISTORICAL LINKING

NON-TREE STRUCTURES

SPATIAL PARSER


Appendix & Plugs


Bibliography
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[8] Marshall C.C., Shipman F. M. Searching for the Missing Link: 2009. http://www.mywebspiration.com
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Comparing Spatial Hypertext Collections

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