Comp4321 The Index May 14 2026

The anatomy of a top result.

query · user imdb space station rate · doc № 136
body match

Forward index · top stems on this page

user 10 imdb 10 rate 8 new 7 movi 6 plot 6 nighthawk 6 cop 6 titl 5 quot 5 film 5 york 5 dvdvhscdall 5 detail 5

document length 687 body tokens  ·  max tf 10 (user)  ·  vocabulary 457 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 · 5 resolved stems0.0358
  2. cosine(query, title) × 2.0 no title overlap (×2.0 unused)0.0000
  3. weighted subtotal cosBody + 2.0 × cosTitle0.0358
  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 × pagerank0.0358

Per-query-stem · how each term contributes

  1. user wid 1045 · df 289 body tf 10 title tf 0 idf 0.054
  2. imdb wid 1084 · df 288 body tf 10 title tf 0 idf 0.059
  3. space wid 0268 · df 11 body tf 0 title tf 0 idf 4.769
  4. station wid 0269 · df 6 body tf 1 title tf 0 idf 5.644
  5. rate wid 1518 · df 151 body tf 8 title tf 0 idf 0.990

Outlinks (1)