Comp4321 The Index May 14 2026

The anatomy of a top result.

query · user imdb movi rate star · doc № 153
body match

Forward index · top stems on this page

movi 13 wong 13 user 10 imdb 10 rate 8 titl 7 chin 6 quot 5 plot 5 hong 5 dvdvhscdall 5 detail 5 comment 5 board 4

document length 558 body tokens  ·  max tf 13 (movi)  ·  vocabulary 371 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 stems0.0387
  2. cosine(query, title) × 2.0 no title overlap (×2.0 unused)0.0000
  3. weighted subtotal cosBody + 2.0 × cosTitle0.0387
  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 × pagerank0.0387

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. movi wid 0012 · df 290 body tf 13 title tf 0 idf 0.049
  4. rate wid 1518 · df 151 body tf 8 title tf 0 idf 0.990
  5. star wid 0354 · df 40 body tf 1 title tf 0 idf 2.907

Outlinks (1)