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Entity Resolution in Plnnr, Imri Goldberg by Mind Map: Entity Resolution in Plnnr, Imri Goldberg
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Entity Resolution in Plnnr, Imri Goldberg


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What is it

Possible solutiona


The problem

They collect lots of data

Need resolve many representations of the same entity

Plnnr need aggregate info on tourist attractions




Missing information in some sources

Need allow manual coorrection

Process must be repeatable & deterministic


DB holds table of POI's

Each source POI point to its combined version


Entity resolution in general

Many use cases

Properties of the problem

Single or multiple entity types

Are their standard/strong identifiers

Do entities have relations between them

Entity resolution across

Conflicting versions (across sources or time)

These properties dimensions cause that there isn't a silverbullete single solution

Design goals

Quality results

Repeatable & determinstic

Reasonably fast

DRY code

Possible design decisions

Relational or Schema-less DB

Fragments (source entities) in the same table as combined entity

Combine only source entities, or use past results

Relevant design patterns

Actual data needs to be explicit

Always use slugs, or UUIDs at the least

Data-sources for everything

Avoid n^2 algorithms by taking advantage of data properties

Don't allow new data to ruin old matches easily


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