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5945b51cfd5a271b761b9aa34765b1fcad622050
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8 Commits

Author SHA1 Message Date
giles
5945b51cfd search: fuzzy matching via edit distance + 18 tests
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editDist as an O(m*n) row-based Levenshtein DP (naive recursion is exponential
and times out under load); fuzzyTerms/fuzzyDocs/fuzzyRankTfIdf expand a term to
indexed terms within a max edit distance. 166/166.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
 2026-06-06 21:47:56 +00:00
giles
3ab8270a58 search: result pagination (offset/limit) + 12 tests
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paginate windows a ranked list (take lim . drop off); pageTfIdf/pageBm25 and
resultCount. 148/148.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
 2026-06-06 20:55:25 +00:00
giles
9d3b775b25 search: prefix/wildcard queries + 14 tests
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prefixTerms matches indexed terms by prefix (allTerms + isPrefixOf); prefixDocs
unions their docs; prefixRankTfIdf ranks via the matched terms. 136/136.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
 2026-06-06 20:22:23 +00:00
giles
77ab827b91 search: Phase 4 federation merge + ACL post-filter + 21 tests
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fedIndex merges per-peer inverted indices (union posting lists per term) after
relabelling local DocIds to global gid = peer*1000 + local — dedupe by
(peer,doc-id) is automatic and positions survive, so ranking runs once over the
merge and interleaves peers by score. ACL is a post-rank filter over an injected
permit predicate (searchTfIdfAcl/topNTfIdfAcl/searchBm25Acl). Roadmap complete,
122/122.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
 2026-06-06 20:08:08 +00:00
giles
a3f9d4f6c9 search: Phase 3 ranking TF-IDF + BM25 + top-N + 23 tests
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rankTfIdf and rankBm25 (configurable k1/b) over the candidate set, float scores
with deterministic DocId tiebreak; topNTfIdf/topNBm25. df/idf derived from
posting-list length. Tests cover tf/idf behavior, a BM25-vs-TF-IDF flip from
length-norm + tf-saturation, the b-parameter effect, tiebreak stability. 101/101.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
 2026-06-06 19:56:50 +00:00
giles
4c84decc01 search: Phase 2 query parser + 32 tests
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Query tokenizer + recursive-descent parser: OR<AND<NOT precedence, implicit AND
on adjacency, quoted phrases, parens, case-insensitive keywords. parseQuery,
searchQuery, showQ. Worked around haskell-on-sx parser limits (ord-based
delimiters; multi-clause fns instead of []-pattern case alts). 78/78.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
 2026-06-06 19:43:10 +00:00
giles
0f0da0319c search: Phase 2 query AST + boolean/phrase eval + 28 tests
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Query ADT (Term|And|Or|Not|Phrase) and evalQuery over docid-sorted posting
lists: boolean ops as linear merges, Not over the allDocs universe, Phrase via
positional adjacency. Batched both test suites into one program eval each
(search-batch) so they finish under heavy CPU load. 46/46.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
 2026-06-06 18:47:42 +00:00
giles
b8cf3eb1b8 search: Phase 1 tokenizer + inverted index + 18 tests
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Tokenizer (lowercase, strip punctuation, positions) and a sorted assoc-list
inverted index [(Term,[(DocId,[Pos])])] with indexDoc/deleteDoc/lookupTerm/
docFreq/allTerms. Search lib is haskell-on-sx source assembled into search/src;
tests reuse hk-test counters via a search-eval helper. conformance.sh models
lib/haskell.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
 2026-06-06 18:21:49 +00:00