Comp4321 The Index May 14 2026

The anatomy of a top result.

query · space deep trek nine search · doc № 100
body match

Forward index · top stems on this page

user 10 imdb 10 rate 9 plot 7 chain 7 agent 7 movi 6 film 6 command 6 presid 6 us 5 titl 5 dvdvhscdall 5 detail 5

document length 611 body tokens  ·  max tf 10 (user)  ·  vocabulary 420 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 stems0.0275
  2. cosine(query, title) × 2.0 no title overlap (×2.0 unused)0.0000
  3. weighted subtotal cosBody + 2.0 × cosTitle0.0275
  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 × pagerank0.0275

Per-query-stem · how each term contributes

  1. space wid 0268 · df 11 body tf 0 title tf 0 idf 4.769
  2. deep wid 0506 · df 16 body tf 2 title tf 0 idf 4.229
  3. trek wid 0355 · df 4 body tf 0 title tf 0 idf 6.229
  4. nine wid 0507 · df 8 body tf 0 title tf 0 idf 5.229
  5. search wid 0153 · df 147 body tf 0 title tf 0 idf 1.029

Outlinks (1)