1. Standardized local property graph models across browsers
Strengthen graph data application development model for decentralized applications
Dr. Theodoros Michalareas/wappier.com -
W3C workshop on web standardization for Graph Data
Berlin, March 2019

2. Standardized Graph models & d.apps
A lot of work on centralized graph databases schemas inter-operability and vocabularies
json-LD, GraphQL , SQL PGQ, SHACL, RDF*, SPARQL*
these primarily used for importing/exporting data from web to centralized graph DBs
what about World Wide WEB/decentralized apps
browser is the ultimate platform for decentralized apps development
acts on both remote/centralized & local decentralized data
limited to new browser extensions or proprietary browsers but this can change
blockchain tech identified use cases where decentralized apps make sense
GDPR and privacy aware web based solutions push
initial use cases discussed in W3C COMMUNITY GROUP FOR PROPERTY GRAPHS (EU R&D project OPEN-I)
Initial proposal for cross-browser local based ad.model in W3C workshop in Digital Marketing (Tampa, Florida, EU R&D project USEMP)

3. Example use cases for property graphs in the browser
interest graph (Brave)
localized graph data: track end-user interest [sports:40%, food:30%, news:25%, fashion:5% + prob. to transition from one interest to another]
localized app: advertising/give a set of ads decide which to show based on user interest graph
privacy graph (Chrome)
localized graph data: track end-user blocking behaviour/track page performance for each end user [page1/ad1: blocked, page2/ad2: allowed + probability to transition from one page to anothre]
localized app: decide which ads should be blocked in a page

4. What we need More discussion on d.apps use cases
what are other useful applications (personalization) – how are local property graphs to be linked together
browser vendors support for creating a new application model based on locally maintained property graphs
Standardize a query language for interacting with local property graphs across browsers
A simple development model for d.apps across browsers
schemas/vocabularies for defining the type of information that should be stored and maintained in browser property graphs across browsers
access model for local property graphs

5. D. Apps Development Model for Property graphs
User A
User B
d.App 1
D. Apps Development Model for Property graphs
d.App 1
d.App 2
d.App 2
Access Control
Local property graph A
Local property graph A
Schema
Local property graph B
Local property graph B ….
Query Language
User D
User B
d.App 1
d.App 2
d.App 1
d.App 2
Local property graph A
Local property graph B
Local property graph A
Local property graph B