Comp4321 The Index May 14 2026

The anatomy of a top result.

query · street search sesam live titl · doc № 208
title ×2.0 body match

Forward index · top stems on this page

user 10 imdb 10 take 10 rate 10 movi 9 live 8 plot 6 new 5 photo 5 titl 5 quot 5 film 5 dvdvhscdall 5 detail 5

document length 738 body tokens  ·  max tf 10 (user)  ·  vocabulary 498 distinct stems  ·  title 2 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 · 5 resolved stems0.0367
  2. cosine(query, title) × 2.0 title boost ×2.0 applied0.5015
  3. weighted subtotal cosBody + 2.0 × cosTitle0.5382
  4. × phrase multiplier stems not within 5-token window · ×1.0×1.0
  5. × pagerank multiplier PageRank not computed for this page · ×1.0×1.0000
  6. final score weighted × phrase × pagerank0.5382

Per-query-stem · how each term contributes

  1. street wid 0106 · df 24 body tf 0 title tf 0 idf 3.644
  2. search wid 0153 · df 147 body tf 0 title tf 0 idf 1.029
  3. sesam wid 0105 · df 2 body tf 0 title tf 0 idf 7.229
  4. live wid 0075 · df 61 body tf 8 title tf 1 idf 2.298
  5. titl wid 1103 · df 288 body tf 5 title tf 0 idf 0.059

Outlinks (1)