Comp4321 The Index May 14 2026

The anatomy of a top result.

query · information retrieval · doc № 010
phrase ×3.0 body match

Forward index · top stems on this page

data 11 base 9 inform 5 gener 5 us 5 consid 4 retriev 3 machineread 3 bibliograph 3 though 3 book 2 primarili 2 chapter 2 system 2

document length 149 body tokens  ·  max tf 11 (data)  ·  vocabulary 91 distinct stems  ·  title 1 stems

Score breakdown

Re-derived from the same tf·idf cosine values, boost factors, and PageRank multipliers the live ranker just used. weighted = body + title × 2.0 · final = weighted × phrase × pagerank.

  1. cosine(query, body) tf·idf body · 2 resolved stems0.1849
  2. cosine(query, title) × 2.0 no title overlap (×2.0 unused)0.0000
  3. weighted subtotal cosBody + 2.0 × cosTitle0.1849
  4. × phrase multiplier ≥2 stems within 5-token window×3.0
  5. × pagerank multiplier 1 + 0.5 × normalized PR (0.000)×1.0001
  6. final score weighted × phrase × pagerank0.5548

Per-query-stem · how each term contributes

  1. inform wid 0024 · df 27 body tf 5 title tf 0 idf 3.474
  2. retriev wid 0025 · df 7 body tf 3 title tf 0 idf 5.421

Outlinks (1)