1. A Survey of Web Mapping Part 3: Linking DARMC and PLEIADES Guoping Huang, ghuang@cga.harvard.edu

2. http://darmc.harvard.edu

3. Present Past Space/Location DARMC Time Event/Feature Reference

4. http://pleiades.stoa.org

8. DARMC has: DARMC has: Name, location XY, source PLEIADES has: PLEIADES has: PID(URL), Name, map sheet no., grid no., source (Barrington Atlas)

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

10. Challenges: Challenges with place names: Challenges with place names: PLEIADES: typos in OCR, spelling variations DARMC: typos in digitization, original names replaced by commonly used alternative names

11. Challenges: Challenges with place names: Challenges with place names: One name, many places

12. Challenges: Challenges with sheet no.: Challenges with sheet no.:Inserts

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

14. Challenges: Challenges with source: Challenges with source: Some original BA points replaced by TIB points

15. Grid no. Name Sheet no. Source PLEIADES ID

16. Grid no. Name Sheet no. Source PLEIADES ID Street no. Street name Zip code City X,Y State

17. Advantages : Alternative place names Alternative place names (Alias table) (Alias table) Fuzzy match: allow spelling variations Fuzzy match: allow spelling variations (Spelling sensitivity) (Spelling sensitivity) Interactive match Interactive match (Candidate score) (Candidate score)

24. Results 24,030 Roman places/points in DARMC 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 = 14,922 points are matched with PLEIADES ID = 84% of named Roman places in DARMC