Comp4321 The Index May 14 2026

The anatomy of a top result.

query · book pseudomathemat relev read back · doc № 267
body match

Forward index · top stems on this page

film 21 ghost 16 dog 15 samurai 15 user 10 imdb 10 movi 9 great 9 rate 9 wai 8 plot 7 code 7 mafia 6 deep 6

document length 903 body tokens  ·  max tf 21 (film)  ·  vocabulary 549 distinct stems  ·  title 4 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 stems0.0064
  2. cosine(query, title) × 2.0 no title overlap (×2.0 unused)0.0000
  3. weighted subtotal cosBody + 2.0 × cosTitle0.0064
  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 × pagerank0.0064

Per-query-stem · how each term contributes

  1. book wid 0011 · df 19 body tf 1 title tf 0 idf 3.981
  2. pseudomathemat wid 0032 · df 2 body tf 0 title tf 0 idf 7.229
  3. relev wid 0033 · df 2 body tf 0 title tf 0 idf 7.229
  4. read wid 0008 · df 17 body tf 0 title tf 0 idf 4.141
  5. back wid 0016 · df 297 body tf 1 title tf 0 idf 0.014

Outlinks (1)