---
library_name: sentence-transformers
pipeline_tag: text-ranking
tags:
- convmemory
- memory
- agent-memory
- validity
- reranking
- cross-encoder
license: mit
---

# ConvMemory v3 Validity Context Model Card

This document separates the three source-of-truth layers for ConvMemory v3:

1. method-level evaluation;
2. the exported representative checkpoint;
3. package-level API measurement with that checkpoint.

These are intentionally different provenance layers.  Method-level numbers
estimate the v3 approach across seeds.  The checkpoint is a representative
implementation of that approach.  The package-level benchmark is the number a
user should expect when loading that checkpoint through the public API on the
fixed dense Memora retrieval benchmark.

## Scope

ConvMemory v3 adds validity evidence to the existing v1/v2 retrieval path.
The default v3 use is `validity_mode="context"`: it attaches a structured
`validity` field to returned memories and preserves the candidate set and
ranking order.

`validity_mode="demote"` is explicit opt-in. It is intended for dense
current-state/update workloads where a top-1 source evidence policy is
available. It preserves the candidate set and may reorder by applying a validity
penalty.

ConvMemory v3 does not make full automatic dependency-graph propagation the
default retrieval path. Multi-hop graph propagation is used as an evidence-path
and analysis capability unless the caller supplies a workload where graph
construction has been validated.

## Checkpoint

The representative v3 validity checkpoint is exported by the v557 recipe:

| Field | Value |
|---|---|
| Module | ConvMemory v3 Validity Context Layer |
| Backbone | `nli-deberta-v3-base` |
| Parameters | `184,423,682` |
| Export seed | `7` |
| Training rows | `5,520` |
| Dev rows | `1,400` |
| Threshold | `0.5` |
| Max length | `192` |
| Source policy | `top1` |
| Default mode | `context` |
| Hub repository | `Purdy0228/ConvMemory-v3-Validity-Context` |
| Checkpoint upload commit | `0883a43fe6df608030ebe9ec29286280e83c857c` |
| `cross_encoder/model.safetensors` SHA256 | `446ee0cf6df4a8967e1a78c46d2ff3a2d777de65efbf475d2278d99468faa8d9` |
| `validity_config.json` SHA256 | `81eddb5f2ff4545dcf4b7655fedd1f7cf846248ad8962394195e6960a2e07849` |

The checkpoint implements the v511 query-conditioned validity method.  It
should not be used as a replacement for the v511 multi-seed method-level
estimate when reporting method quality.

## Input Format

The validity scorer uses the v506/v511 query/source/target format:

```text
USER_QUERY:
...

SOURCE_EVIDENCE:
...

TASK: Decide whether the target memory should be demoted for this user query.
```

paired with:

```text
TARGET_MEMORY:
...
```

The package exposes two scoring paths:

- `ValidityEvidenceModule.apply(...)`: annotate or demote `RerankResult`
  objects while preserving the mode contracts.
- `ValidityEvidenceModule.score_evidence_pairs(...)`: batch explicit
  query/source/target pairs after source evidence has already been selected.

The second path is the preferred dense-workload path because it avoids per-pair
CrossEncoder calls.

## Method-Level Evaluation

The v511 5-seed Memora-retrieval benchmark is the method-level estimate. It
scores `69,200` source-query rows across seeds `[7, 11, 23, 31, 47]`.

Top-1 retrieved source, max aggregation:

| Metric | v511 method-level |
|---|---:|
| Pair accuracy | `98.6% +/- 0.2%` |
| Demote recall | `92.9% +/- 1.1%` |
| Protect recall | `99.4% +/- 0.1%` |
| Old-target all-type consistency | `92.8% +/- 1.1%` |
| Event all-type consistency | `89.1% +/- 1.3%` |
| Current active H@1 | `95.7% +/- 1.2%` |
| Scoring cost | `1.9291` ms/source-query pair |

This table is the right citation for method-level claims.

## Package-Level Check

The v558 public API benchmark loads the exported v557 checkpoint through
`ValidityEvidenceModule.from_pretrained(...)` and scores the same top-1 source
policy through the package API.

Top-1 retrieved source, max aggregation:

| Metric | v558 package/API check |
|---|---:|
| Source-query rows | `6,920` |
| Target predictions | `20,760` |
| Pair accuracy | `98.7%` |
| Demote recall | `93.6%` |
| Protect recall | `99.4%` |
| Old-target all-type consistency | `93.1%` |
| Event all-type consistency | `89.6%` |
| Current active H@1 | `96.5%` |
| API scoring batch size | `512` |
| Scoring cost | `1.5844` ms/source-query pair |
| Module load time | `2.16` s |

The v558 number is the package-level reproducibility check for this checkpoint.
It is a single-checkpoint measurement, not a replacement for the v511
multi-seed method-level estimate.

## Safety Contracts

The package-level safety checks from v558 all pass:

| Contract | Status |
|---|---:|
| `context` mode preserves order | `pass` |
| `context` mode preserves ranks | `pass` |
| `context` mode attaches validity metadata | `pass` |
| `demote` mode preserves candidate set | `pass` |
| `demote` mode preserves result count | `pass` |

The test suite also covers off-mode byte identity, context-mode rank
preservation, demote candidate-set preservation, explicit opt-in semantics,
forbidden-field rejection, safe evidence output, checkpoint round-trip, and
batched CrossEncoder scoring.

## Operating Policy

| Workload | Recommended mode | Source policy | Ranking mutation |
|---|---|---|---|
| General ConvMemory retrieval | `context` | top-1 evidence when available | no |
| Dense current-state/update retrieval | `demote` opt-in | lexical top-1 source | yes, candidate set preserved |
| Multi-hop graph explanation | `context` | conservative graph evidence | no |

Top-3/top-5 source aggregation is not the default policy because earlier v499,
v502, and v503 runs showed that adding more sources can introduce false
positive demotions. Full top-500 graph construction is also not the default
path because learned graph errors can be amplified by propagation.

## Source-Of-Truth Ledger

| Claim or artifact | Value or role | Source file | Provenance layer | Availability |
|---|---|---|---|---|
| v3 method-level dense benchmark | v511 5-seed top1: old-target all-type `92.8% +/- 1.1%`, current active H@1 `95.7% +/- 1.2%` | `results/v511_memora_retrieval_demotion_benchmark_5seed/REPORT.md` | method-level evaluation | author-retained results |
| v3 frozen configuration policy | default context mode; demote opt-in for dense current-state/update workloads; top1 source | `results/v514_v3_freeze_config/final_config.json` | configuration freeze | author-retained results |
| exported checkpoint manifest | seed-7 representative checkpoint; `184,423,682` params; threshold `0.5`; Hub repo `Purdy0228/ConvMemory-v3-Validity-Context` | `results/v557_v3_validity_checkpoint/seed_7/MANIFEST.json` | checkpoint export | checkpoint artifact / author-retained manifest |
| checkpoint scorer config | `mode_default="context"`, `source_policy="top1"`, `cross_encoder_num_labels=2` | `results/v557_v3_validity_checkpoint/seed_7/validity_config.json` | checkpoint export | checkpoint artifact / author-retained config |
| package API benchmark | v558 top1 package check: old-target all-type `93.1%`, current active H@1 `96.5%` | `results/v558_v3_public_api_benchmark_batch/REPORT.md` | package-level measurement | author-retained results |
| package API latency | `1.5844` ms/source-query pair, API batch size `512` | `results/v558_v3_public_api_benchmark_batch/summary.json` | package-level measurement | author-retained results |
| validity module code | `ValidityEvidenceModule`, `ValidityEvidenceConfig`, `score_evidence_pairs` | `convmemory/validity.py` | package code | public package when tagged `v0.6.0` |
| public API integration | `load_validity_module`, `validity_mode`, retrieve/rerank integration | `convmemory/api.py` | package code | public package when tagged `v0.6.0` |
| result payload | `RerankResult.validity` | `convmemory/reranker.py` | package code | public package when tagged `v0.6.0` |
| safety tests | `41 passed` after v558 batch update | `tests/test_validity_context.py` and existing package tests | machine-checkable tests | public package when tagged `v0.6.0` |
| user documentation | mode semantics, safety contracts, scorer format | `docs/VALIDITY_CONTEXT.md` | package documentation | public package when tagged `v0.6.0` |

The `results/...` packets are source-of-truth evaluation artifacts kept with
the author workspace unless explicitly packaged with a release. The package
code, tests, and documentation are the public reproducibility surface once tag
`v0.6.0` is cut.

## Known Boundaries

- The v3 checkpoint is trained for query-conditioned validity decisions with
  source evidence. It is not a generic factuality judge.
- Automatic demotion is intended for dense current-state/update workloads.
  General sparse retrieval should use context annotation by default.
- Broad learned source retrieval and automatic strict dependency graph
  construction are not part of the default v3 retrieval contract.
- The v511 method-level estimate and v558 package-level benchmark use different
  but connected provenance layers; report them with their layer names.