Comp4321 The Index May 14 2026

The anatomy of a top result.

query · information retrieval · doc № 003
phrase ×3.0 body match high pagerank

Forward index · top stems on this page

book 2 pseudomathemat 1 relev 1 read 1 back 1 main 1 articl 1 autom 1 keyword 1 classif 1 inform 1 retriev 1 gener 1 us 1

document length 19 body tokens  ·  max tf 2 (book)  ·  vocabulary 18 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 stems0.2919
  2. cosine(query, title) × 2.0 no title overlap (×2.0 unused)0.0000
  3. weighted subtotal cosBody + 2.0 × cosTitle0.2919
  4. × phrase multiplier ≥2 stems within 5-token window×3.0
  5. × pagerank multiplier 1 + 0.5 × normalized PR (0.011)×1.0055
  6. final score weighted × phrase × pagerank0.8805

Per-query-stem · how each term contributes

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

Outlinks (4)