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fix unwrap-on-partial_cmp, dedup helpers, O(1) relation dedup

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Replace all partial_cmp().unwrap() with total_cmp() in spectral.rs
and knowledge.rs — eliminates potential panics on NaN without
changing behavior for normal floats.

Use existing weighted_distance() and eigenvalue_weights() helpers in
nearest_neighbors() and nearest_to_seeds() instead of inlining the
same distance computation.

Move parse_timestamp_to_epoch() from enrich.rs to util.rs — was
duplicated logic, now shared.

Replace O(n²) relation existence check in init_from_markdown() with
a HashSet of (source, target) UUID pairs. With 26K relations this
was scanning linearly for every link in every markdown unit.
This commit is contained in:
ProofOfConcept 2026-03-08 21:22:05 -04:00
parent 2f2c84e1c0
commit 3dddc40841
5 changed files with 55 additions and 63 deletions
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15
poc-memory/src/enrich.rs
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@ -18,20 +18,7 @@ use std::hash::{Hash, Hasher};
use crate::store::StoreView;
/// Parse a timestamp string like "2026-03-05T19:56" to unix epoch seconds.
fn parse_timestamp_to_epoch(ts: &str) -> Option<i64> {
use chrono::{Local, NaiveDateTime, TimeZone};
// Try common formats
let formats = ["%Y-%m-%dT%H:%M:%S", "%Y-%m-%dT%H:%M", "%Y-%m-%d %H:%M:%S", "%Y-%m-%d %H:%M"];
for fmt in &formats {
if let Ok(ndt) = NaiveDateTime::parse_from_str(ts, fmt) {
if let Some(dt) = Local.from_local_datetime(&ndt).earliest() {
return Some(dt.timestamp());
}
}
}
None
}
use crate::util::parse_timestamp_to_epoch;
/// Compute the store dedup key for a transcript file.
/// This is the same key experience_mine uses to mark a transcript as mined.