Comp4321 The Index May 14 2026

The anatomy of a top result.

query · book pseudomathemat relev read back · doc № 011
title ×2.0 body match

Forward index · top stems on this page

term 6 relev 6 system 5 mathemat 4 book 3 mean 3 doctrin 2 agreement 2 provid 2 back 2 recal 2 user 2 equat 2 inform 2

document length 125 body tokens  ·  max tf 6 (term)  ·  vocabulary 93 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 stems0.3996
  2. cosine(query, title) × 2.0 title boost ×2.0 applied0.6790
  3. weighted subtotal cosBody + 2.0 × cosTitle1.0786
  4. × phrase multiplier stems not within 5-token window · ×1.0×1.0
  5. × pagerank multiplier 1 + 0.5 × normalized PR (0.000)×1.0001
  6. final score weighted × phrase × pagerank1.0787

Per-query-stem · how each term contributes

  1. book wid 0011 · df 19 body tf 3 title tf 1 idf 3.981
  2. pseudomathemat wid 0032 · df 2 body tf 1 title tf 0 idf 7.229
  3. relev wid 0033 · df 2 body tf 6 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 2 title tf 0 idf 0.014

Outlinks (1)