Paper Citation Record · LEDGER

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems

As of 20 August 2026, this Paper Citation Record lists 35 of 35 outbound references and 4 inbound Pith citation observations for arXiv:2509.22047.

A citation records a reference. It does not transfer a finding from one paper to another.

pith.paper-citation-record.v1
2509.22047 v3

Coverage vector

measured 35 of 35 reference resolution

Typed states for the displayed outbound observations.

Source: paper_references, paper_reference_links, observed 2026-08-15T15:49:07.633786Z

measured 39 of 39 standing notices

One-hop event checks from named stored sources.

Source: scholarly_work_events, retraction_status_cache, observed 2026-08-20T06:33:59.587034+00:00

measured 4 of 4 inbound itemization

Pith citing papers itemized under the disclosed page cap.

Source: paper_references, paper_reference_links, observed 2026-08-01T08:01:22.596796Z

measured 1 of 1 external citation measurements

A source-named dated measurement, never combined with another source.

Source: arxiv_reference, observed 2026-08-05T02:28:24.338817Z

Reference resolution

35 of 35 outbound references displayed

verified exact0
verified fuzzy2
unresolved33
parse uncertain0
malformed identifier0
metadata mismatch0

External citation measurements

0
arxiv_reference, observed 2026-08-05T02:28:24.338817Z

Outbound references

Observation a3726d08-fc94-415a-b2fb-927bf1841e39 · outbound

This paper cites URL: " 'urlintro :=.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems URL: " 'urlintro :=

Reference 1

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.483220Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 66e50fcd-521d-457e-9ccd-3ec88077a324 · outbound

This paper cites write newline.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems write newline

Reference 2

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.488719Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 9a190610-c58f-4f4b-88be-babca967dd9d · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 3

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.493350Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 48324b8d-8d99-46a1-ad87-f61a763f4819 · outbound

This paper cites Concrete Problems in AI Safety.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Concrete Problems in AI Safety

Reference 4

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.499209Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation cc09a5fc-0f1d-4b49-a885-e643a163392e · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 5

Resolution: unresolved; raw_fallback, observed 2026-08-15T15:49:08.054890Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 760ba96c-ecea-41e6-a84b-43d6098f94d1 · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 6

Resolution: unresolved; raw_fallback, observed 2026-08-15T15:49:08.040279Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 4c476ffd-6f71-47da-9b68-d7ec0b870b1e · outbound

This paper cites Alegre, Ann Nowe, Ana Bazzan, El Ghazali Talbi, Gr\' e goire Danoy, and Bruno C.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Alegre, Ann Nowe, Ana Bazzan, El Ghazali Talbi, Gr\' e goire Danoy, and Bruno C

Reference 7

Resolution: verified fuzzy; raw_fallback, observed 2026-08-15T15:49:08.023659Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation c99a6e90-0a57-4def-a4a1-a03e316fb8e0 · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 8

Resolution: unresolved; raw_fallback, observed 2026-08-15T15:49:08.007318Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation da0ff5f9-e48f-4e8f-8f72-50680748e675 · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 9

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.521973Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 4129b698-f09a-4d28-8c40-669c6998dace · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 10

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.527109Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation a123be4e-6328-4b17-89c9-46ee84a7d3a8 · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 11

Resolution: unresolved; raw_fallback, observed 2026-08-15T15:49:07.984262Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 0cdecf5c-ab15-49e9-90d5-0e3b2c68a704 · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 12

Resolution: unresolved; raw_fallback, observed 2026-08-15T15:49:07.972283Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 7cb53439-b37c-46ac-a318-7ddb1aed75c9 · outbound

This paper cites The Llama 3 Herd of Models.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems The Llama 3 Herd of Models

Reference 13

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.541356Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation ee9dc9f2-ed03-451f-b8e3-6b8b7c43b9b7 · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 14

Resolution: unresolved; raw_fallback, observed 2026-08-15T15:49:07.958926Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation e810e80a-1e2c-41ed-9040-29ecc7dfa711 · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 15

Resolution: unresolved; raw_fallback, observed 2026-08-15T15:49:07.945528Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 3cde26d9-8acb-466c-b53a-8b8d9b873093 · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 16

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.554403Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation e021a919-49f1-4e17-a82c-b6afdea50566 · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 17

Resolution: unresolved; raw_fallback, observed 2026-08-15T15:49:07.932670Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation d8f6086f-edbb-444a-ad56-e6c81bfe27ab · outbound

This paper cites DeepSeek-V3 Technical Report.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems DeepSeek-V3 Technical Report

Reference 18

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.562204Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation d896acf7-ec33-4129-aec3-2e9a403b4625 · outbound

This paper cites Understanding R1-Zero-Like Training: A Critical Perspective.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Understanding R1-Zero-Like Training: A Critical Perspective

Reference 19

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.566529Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 20c222c6-1e6b-4426-a944-ae9d3b266aa9 · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 20

Resolution: unresolved; raw_fallback, observed 2026-08-15T15:49:07.920052Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation e23f06e1-02aa-418a-9697-73c43e8af065 · outbound

This paper cites Bradley Knox, Chelsea Finn, and Scott Niekum.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Bradley Knox, Chelsea Finn, and Scott Niekum

Reference 21

Resolution: verified fuzzy; raw_fallback, observed 2026-08-15T15:49:07.905287Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation eb683d59-e733-45c2-b54a-fd10b31088b4 · outbound

This paper cites Magistral.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Magistral

Reference 22

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.580795Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 514b1e38-43e0-4bd5-a606-2a4150296a47 · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 23

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.584960Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 1a6ce09f-1bb0-455f-a487-bf80d7821883 · outbound

This paper cites DeepSeekMath: Pushing the Limits of Mathematical Reasoning in Open Language Models.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems DeepSeekMath: Pushing the Limits of Mathematical Reasoning in Open Language Models

Reference 24

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.589161Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 6771ef64-3ba7-43f3-b4e3-647754b8e4b1 · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 25

Resolution: unresolved; raw_fallback, observed 2026-08-15T15:49:07.887315Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 14c1781f-c34e-4d4d-ae53-b8619391bfc8 · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 26

Resolution: unresolved; raw_fallback, observed 2026-08-15T15:49:07.872941Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 9d1b11e7-5133-4d5a-b163-084082d8ac14 · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 27

Resolution: unresolved; raw_fallback, observed 2026-08-15T15:49:07.858387Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 6d7cbe3a-90be-465c-9e47-0fa424104b69 · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 28

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.605435Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation 968d5be7-7c4c-4c75-bfca-aba6ac703d52 · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 29

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.609159Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation be2d50b4-5f92-4b7b-9444-e13a3ae5bbe5 · outbound

This paper cites BNPO: Beta Normalization Policy Optimization.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems BNPO: Beta Normalization Policy Optimization

Reference 30

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.612952Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation bd5654c1-11e8-495d-aa80-613796a2a4f0 · outbound

This paper cites Qwen3 Technical Report.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Qwen3 Technical Report

Reference 31

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.616957Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation d1c491fc-cc26-41cc-820f-ab52ce302f17 · outbound

This paper cites Group Sequence Policy Optimization.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Group Sequence Policy Optimization

Reference 32

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.621278Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation a1e784c5-8604-4ff7-aa4a-d9fa2cb420a2 · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 33

Resolution: unresolved; raw_fallback, observed 2026-08-15T15:49:07.836779Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation ec15d00e-3a95-4f00-8c22-c978c59cd61b · outbound

This paper cites an unresolved cited work.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Unresolved cited work

Reference 34

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.629420Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Observation adc5925d-4d6f-4cfe-acad-35db3d87ebff · outbound

This paper cites Fine-Tuning Language Models from Human Preferences.

MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems Fine-Tuning Language Models from Human Preferences

Reference 35

Resolution: unresolved; no resolver link, observed 2026-08-15T15:49:07.633786Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.

Pith citing papers

Observation 48dbd911-a145-4704-a5fb-8372531e2bb0 · inbound

Signal Reshaping for GRPO in Weak-Feedback Agentic Code Repair cites this paper.

Signal Reshaping for GRPO in Weak-Feedback Agentic Code Repair MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems

Reference 10

Resolution: verified exact; arxiv_id, observed 2026-07-24T01:23:00.114209Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 7406bf45-c10e-4699-a55d-e05fd9c9b6e3 · inbound

LC-ERD: Mining Latent Logic for Self-Evolving Reasoning via Consistency-Regulated Reward Decomposition cites this paper.

LC-ERD: Mining Latent Logic for Self-Evolving Reasoning via Consistency-Regulated Reward Decomposition MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems

Reference 13

Resolution: verified exact; arxiv_id, observed 2026-07-24T01:23:00.114209Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 6a1c1148-0f65-4735-b945-e1745b9a9113 · inbound

CAT-Translate: Building Compact Open-Source Models for Japanese-English Translation cites this paper.

CAT-Translate: Building Compact Open-Source Models for Japanese-English Translation MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems

Reference 20

Resolution: verified exact; arxiv_id, observed 2026-07-24T01:23:00.114209Z

Source-reported events for the cited work

No event found in the named queried sources as of 2026-08-20T06:33:59.587034+00:00.

Observation 5e56dbc7-b428-44ad-acbf-d3500a46a56b · inbound

The Dark Room in the Reward Channel: Dense Prediction Rewards Collapse GRPO-Trained LLM Agents -- and The Channel, Not the Content, Decides What Works cites this paper.

The Dark Room in the Reward Channel: Dense Prediction Rewards Collapse GRPO-Trained LLM Agents -- and The Channel, Not the Content, Decides What Works MO-GRPO: Mitigating Reward Hacking of Group Relative Policy Optimization on Multi-Objective Problems

Reference 7

Resolution: unresolved; no resolver link, observed 2026-08-01T08:01:22.596796Z

Source-reported events for the cited work

Unavailable: canonical work link unavailable.