A Survey of Web Mapping Part 3:

Linking DARMC and PLEIADES

Guoping Huang, ghuang@cga.harvard.edu

http://darmc.harvard.edu

PresentPast

Space/Location

DARMC

Time

Event/Feature

Reference

http://pleiades.stoa.org

DARMC has: Name, location XY, source

PLEIADES has:PID(URL), Name, map sheet no., grid

no., source (Barrington Atlas)

DARMC has: Name, location XY > sheet no., grid no.source PLEIADES has:PID(URL), Name, sheet no., grid no.,

source (BA)

Challenges:

Challenges with place names:PLEIADES: typos in OCR, spelling

variationsDARMC: typos in digitization, original

names replaced by commonly used alternative names

Challenges:

Challenges with place names:One name, many places

Challenges:

Challenges with sheet no.:Inserts

Challenges:

Challenges with grid no.:Geo-correction changed original location

Challenges:

Challenges with source:Some original BA points replaced by TIB

points

Grid no.

Name

Sheet no.

Source

PLEIADES ID

Grid no.

Name

Sheet no.

Source

PLEIADES ID

Street no.

Street name

Zip code

City

X,Y

State

Advantages :

Alternative place names

(Alias table)

Fuzzy match: allow spelling variations

(Spelling sensitivity)

Interactive match (Candidate score)

Results

24,030 Roman places/points in DARMC

6,171 points don't have names

20,995 points are indicated as from Barrington Atlas

14,922 points are matched with PLEIADES ID =

84% of named Roman places in DARMC