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pith:YAIKOTFA

pith:2026:YAIKOTFA2SWU5JNNKGPKYCKNIS

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Robust Player-Conditional Champion Ranking for League of Legends: Style Similarity, Mastery Priors, and Archetype-Constrained Discovery

Min Heo, Pranav Kadiyam, Prasun Panthi

A framework ranks League of Legends champions for specific players by blending population strength, style similarity, mastery experience, and archetype constraints.

arxiv:2605.18338 v1 · 2026-05-18 · stat.AP · cs.LG

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Claims

C1strongest claim

The proposed framework combines four information sources: a population-strength proxy, player-style similarity, direct and indirect mastery priors, and archetype-level guardrails to produce interpretable player-conditional champion rankings under sparse, noisy, and non-stationary behavioral data.

C2weakest assumption

That robust median/MAD normalization, logarithmic transforms, recency-weighted style vectors, mastery-weighted champion-pool vectors, weighted cosine similarity, and k-means++ archetype clustering can be combined into stable, meaningful rankings without post-hoc tuning that undermines the claimed interpretability and robustness.

C3one line summary

A modular framework for interpretable, player-conditional champion ranking in League of Legends is specified using style similarity, mastery priors, archetype guardrails, and robust normalization on behavioral data.

References

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[1] We formulate champion recommendation as a content-based, player-conditional ranking problem with decomposable utility components

[2] We define a robust preprocessing pipeline using me- dian/MAD normalization, sign correction for nega- tive metrics, clipping, and log transforms for skewed event counts

[3] We construct player representations from both recency-weighted match behavior and mastery- weighted champion-pool behavior

[4] We introduce a weighted cosine fit score whose fea- ture weights depend on both population dispersion and player-specific behavioral salience

[5] Robust Player-Conditional Champion Ranking for League of Legends: Style Similarity, Mastery Priors, and Archetype-Constrained Discovery 2026 · arXiv:2605.18338

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Robust Player-Conditional Champion Ranking for League of Legends: Style Similarity, Mastery Priors, and Archetype-Constrained Discovery

Receipt and verification

First computed	2026-05-20T00:05:55.897045Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c010a74ca0d4ad4ea5ad519eac094d44a3f2d0608d02c10db4c2925954ed021d

Aliases

arxiv: 2605.18338 · arxiv_version: 2605.18338v1 · doi: 10.48550/arxiv.2605.18338 · pith_short_12: YAIKOTFA2SWU · pith_short_16: YAIKOTFA2SWU5JNN · pith_short_8: YAIKOTFA

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curl -sH 'Accept: application/ld+json' https://pith.science/pith/YAIKOTFA2SWU5JNNKGPKYCKNIS \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: c010a74ca0d4ad4ea5ad519eac094d44a3f2d0608d02c10db4c2925954ed021d

Canonical record JSON

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    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.AP",
    "submitted_at": "2026-05-18T12:52:16Z",
    "title_canon_sha256": "5b789214bf27b698a89c11241bd96e001f1fc0cfa50dcf7d3fd7fe843f486d6f"
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