Entity Resolution

Entity resolution is the process by which a system determines that different references — names, abbreviations, partial mentions, separate records — point to the same real-world entity, and identifies which specific entity that is. It is the operational core of entity identification, and it sits beneath disambiguation, reconciliation, and named entity recognition as the underlying mechanism each depends on. The problem entity resolution solves is pervasive. A single organization is referred to in many forms: its full legal name, a short form, an abbreviation, a former name, a brand name distinct from the corporate name, an informal reference. The same organization appears across many separate records in many systems. A founder is referenced sometimes by full name, sometimes by surname alone. Products, subsidiaries, and divisions carry their own names and their own relationships to the parent entity. Entity resolution is the work — performed by systems, and supported by entity optimization — of correctly connecting all of these references to the right single entity, and keeping distinct entities distinct. When entity resolution succeeds, a system holds a clean, unified model: it knows that these varied references all denote one organization, it knows that organization's attributes and relationships, and it does not confuse it with anything else. When entity resolution fails, the consequences are concrete retrieval problems: references are split across what the system treats as separate entities, or distinct entities are wrongly merged, and in both cases retrieval and citation degrade. For an organization, supporting entity resolution means providing systems with the signals that make correct resolution straightforward — consistent naming, explicit connection of name variants and abbreviations to the canonical entity, clear structured data, `sameAs` links, and a defined canonical entity for systems to resolve toward. Entity resolution is, in practical terms, the single most important operational concept in entity optimization: it is the function that determines whether a system can identify an organization correctly at all.