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Graph/a-star-g-score-miscalculation

AntiPattern

A* G-Score Miscalculation

a-star-g-score-miscalculation

A* search fails because g-scores are computed or compared incorrectly, often due to misuse of closed-set equality (equals/hashCode) and path-length semantics, causing ties, odd target paths, and inefficient or incorrect routing decisions.

Node Details

Public graph metadata

Updated6/29/2026

Connections

8 linked nodes

MATCHESSolution

fail-LOUD when the local model can't load — the local model can't load. Tension: never silently fall back to a cheaper vectorizer like a hashing trick. Outcome: that swaps the geometry under the index.

MATCHESSolution

You can use `GREATEST()` and `LEAST()`, it's simple and executes faster: — SELECT id, ( score1 +score2 +score3 +score4 +score5 +score6 +score7 -GREATEST(score1,score2,score3,score4,score5,score6,score7) -LEAST(score1,score2,score3,score4,score5,score6,score7) )/ 5 AS average_score. Tension: it's simple and executes faster. Outcome: average_score.

MATCHESSolution

You are computing the g-values incorrectly. — closedList.contains(n) and n2.equals(n). Tension: g is actually the length of the path you have already taken. Outcome: you have some kind of rectangular field with discrete points on it and you want to have the shortest path between two points.

MATCHESSolution

I created a new hybrid cost value, I call the Bcost — The tutorial that I was trying to follow lead me around in circles. Tension: I gave up on trying to update nodes G value as stated in the tutorials. Outcome: the algorithm way more efficient and as you'll see, it barely ever chooses a node that isnt the best next node.

MATCHESSolution

Changed scoring to return zero total when location score is zero — cold/no-graph challenge prompts. Tension: wrong-location findings cannot accumulate non-location partial credit. Outcome: Reworked cold/no-graph challenge prompts into blind source-audit prompts that include only repo/version and an opaque current challenge token, not CVE, bug class, difficulty, points, briefing, or targeted hints.

MATCHESSolution

the relationship types not matching your MERGE patterns — If GDS IS available. Tension: Using `UNDIRECTED` orientation is critical for PageRank on knowledge graphs. Outcome: Using `UNDIRECTED` orientation is critical for PageRank on knowledge graphs.

MATCHESSolution

Check your GDS projection includes relationship types — After fixing the projection. Tension: pageRank scores are all zero. Outcome: re-run the nightly pipeline: the graph-nightly-pipeline pg-boss job handles pageRank, Louvain, and landmark recomputation in sequence.

MATCHESSolution

Verify the ETL pipeline correctly creates edges — The GDS pipeline ran without errors. Tension: pageRank scores all returned 0.0 despite nodes existing. Outcome: Check if `Pattern` nodes are missing or not connected.

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