Close Strong Long (CSL)

Close Strong Long (CSL)

coined by Jason Barnard in 2015.
Factual definition
A relationship scoring framework that measures inherited credibility between entities. Close measures topical relevance (same niche = high transfer). Strong measures collaboration depth (founding/partnership = high transfer). Long measures duration (calculated from relationship dates - older = more training data = stronger). Formula: (Close × Strong × Long) / 10 = 0-100% inheritance potential.
Jason Barnard definition of Close Strong Long (CSL)
Close Strong Long is the PageRank for Knowledge Graphs. It answers: how much credibility flows between connected entities? Close = are you in the same niche? Strong = do you actively collaborate? Long = how many years has this relationship existed? The kicker: Long is calculated from dates, so ADD DATES TO EVERYTHING.
Why Jason Barnard perspective on Close Strong Long (CSL) matters
Use when evaluating relationship value, prioritizing authority-building partnerships, or explaining why some entity connections transfer more credibility than others. CSL scoring applies to both KG relationships and LLM embedding proximity.
ASCII Diagram

Close Strong Long (CSL) as the relationship scoring framework for inherited credibility between entities in both KG and LLM systems.

┌─────────────────────────────────────────────────────────────┐
│              CLOSE STRONG LONG (CSL) FRAMEWORK              │
│         Inherited Credibility = (C × S × L) ÷ 10            │
└─────────────────────────────────────────────────────────────┘

┌─────────────────┐  ┌─────────────────┐  ┌─────────────────┐
│     CLOSE       │  │     STRONG      │  │      LONG       │
│ Topical         │  │ Collaboration   │  │ Duration        │
│ Relevance       │  │ Depth           │  │ (from dates)    │
├─────────────────┤  ├─────────────────┤  ├─────────────────┤
│ 10: Same niche  │  │ 10: Founding    │  │ 10: 10+ years   │
│  8: Same area   │  │  8: Partnership │  │  8: 5-10 years  │
│  6: Adjacent    │  │  6: Ongoing     │  │  6: 2-5 years   │
│  4: Related     │  │  4: Periodic    │  │  4: 1-2 years   │
│  2: Tangential  │  │  2: Single      │  │  2: < 1 year    │
│  1: Unrelated   │  │  1: Mention     │  │  1: Just started│
└─────────────────┘  └─────────────────┘  └─────────────────┘
         │                   │                   │
         └───────────────────┼───────────────────┘
                             ▼
              ┌──────────────────────────────┐
              │  EXAMPLE: founderOf (2015)   │
              │  C=10 × S=10 × L=10 ÷ 10     │
              │  = 100% inheritance          │
              └──────────────────────────────┘

CRITICAL: Long is CALCULATED from dates. ADD DATES TO EVERYTHING.          
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