Comp4321 The Index May 14 2026

The anatomy of a top result.

query · rate user imdb film plot · doc № 107
body match

Forward index · top stems on this page

user 10 imdb 10 space 8 station 8 rate 8 tv 6 insid 6 detail 6 movi 5 titl 5 dvdvhscdall 5 comment 5 board 4 quot 4

document length 394 body tokens  ·  max tf 10 (user)  ·  vocabulary 253 distinct stems  ·  title 3 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 stems0.0817
  2. cosine(query, title) × 2.0 no title overlap (×2.0 unused)0.0000
  3. weighted subtotal cosBody + 2.0 × cosTitle0.0817
  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 × pagerank0.0817

Per-query-stem · how each term contributes

  1. rate wid 1518 · df 151 body tf 8 title tf 0 idf 0.990
  2. user wid 1045 · df 289 body tf 10 title tf 0 idf 0.054
  3. imdb wid 1084 · df 288 body tf 10 title tf 0 idf 0.059
  4. film wid 1258 · df 162 body tf 2 title tf 0 idf 0.889
  5. plot wid 1110 · df 288 body tf 4 title tf 0 idf 0.059

Outlinks (1)