Comp4321 The Index May 14 2026

The anatomy of a top result.

query · test page new crawler get · doc № 002
title ×2.0 body match high pagerank

Forward index · top stems on this page

new 4 back 1 main 1 bbc 1 cnn 1

document length 8 body tokens  ·  max tf 4 (new)  ·  vocabulary 5 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 · 4 resolved stems0.0001
  2. cosine(query, title) × 2.0 title boost ×2.0 applied0.0085
  3. weighted subtotal cosBody + 2.0 × cosTitle0.0085
  4. × phrase multiplier stems not within 5-token window · ×1.0×1.0
  5. × pagerank multiplier 1 + 0.5 × normalized PR (0.007)×1.0037
  6. final score weighted × phrase × pagerank0.0086

Per-query-stem · how each term contributes

  1. test wid 0000 · df 6 body tf 0 title tf 0 idf 5.644
  2. page wid 0001 · df 154 body tf 0 title tf 0 idf 0.962
  3. new wid 0010 · df 292 body tf 4 title tf 1 idf 0.039
  4. crawler wid 0002 · df 2 body tf 0 title tf 0 idf 7.229

Outlinks (3)