# Multi-hop Question Answering on 2WikiMultiHopQA (official evaluation)

Source: [Multi-hop Question Answering on 2WikiMultiHopQA (official evaluation)](<https://www.sota2.com/research/sota/multi-hop-question-answering-on-2wikimultihopqa-official-evaluation>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2026-02-26T05:42:30.208Z

Evaluation of model performance on the official evaluation set of the 2WikiMultiHopQA dataset for multi-hop question answering, typically measured using Exact Match (EM).

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

| Scope | Recorded value |
| --- | --- |
| Task | Multi-hop Question Answering |
| Dataset (including any stated split) | 2WikiMultiHopQA (2WikiMQA) (official evaluation) |
| Metric | Exact Match (EM) |
| Unit | PERCENT |
| Direction | Higher is better |
| Results loaded | 17 of 17 |
| Coverage | All results currently returned for this benchmark |

Evaluation settings may differ between results. The original papers and recorded configurations are needed to establish comparability. A shared metric name alone does not establish an identical protocol.

## Metrics

- [Exact Match (EM)](<https://www.sota2.com/research/sota/multi-hop-question-answering-on-2wikimultihopqa-official-evaluation.md?metric=Exact%20Match%20(EM)>): Higher is better; unit: PERCENT.

## Recorded results

| Method | Exact Match (EM) | Result date | Report paper |
| --- | --- | --- | --- |
| HRPO | 31.8 | Not recorded | 692e7315d6b0dd3342932746 |
| M3PO | 31.4 | Not recorded | 692e7315d6b0dd3342932746 |
| GRPO | 30.3 | Not recorded | 692e7315d6b0dd3342932746 |
| PPO | 29.3 | Not recorded | 692e7315d6b0dd3342932746 |
| M3PO | 27.9 | Not recorded | 692e7315d6b0dd3342932746 |
| HRPO | 27.6 | Not recorded | 692e7315d6b0dd3342932746 |
| QA | 25 | Not recorded | 692e7315d6b0dd3342932746 |
| SFT | 24.8 | Not recorded | 692e7315d6b0dd3342932746 |
| PPO | 24.2 | Not recorded | 692e7315d6b0dd3342932746 |
| RAG | 23.5 | Not recorded | 692e7315d6b0dd3342932746 |
| RAG | 22.6 | Not recorded | 692e7315d6b0dd3342932746 |
| GRPO | 21.3 | Not recorded | 692e7315d6b0dd3342932746 |
| SFT | 21 | Not recorded | 692e7315d6b0dd3342932746 |
| RAG | 20.3 | Not recorded | 692e7315d6b0dd3342932746 |
| Search-o1 | 17.6 | Not recorded | 692e7315d6b0dd3342932746 |
| IRCoT | 14.9 | Not recorded | 692e7315d6b0dd3342932746 |
| CoT | 11.1 | Not recorded | 692e7315d6b0dd3342932746 |

### HRPO

Exact Match (EM): 31.8. Result ID: 699633a25698665ec475d5ef.

[Reporting paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa78c91e209131cea7a81d.md>)

Recorded evaluation configuration: {"Backbone":"Qwen2.5-3B-Instruct","Strategy":"Hybrid Reasoning Policy Optimization","Context Retrieval":"Top-3 documents"}. This record does not assert independent reproduction.

### M3PO

Exact Match (EM): 31.4. Result ID: 699633a25698665ec475d5f0.

[Reporting paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

[Method origin paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

Recorded evaluation configuration: {"Backbone":"Qwen2.5-3B-Instruct","Strategy":"Multi-Path Perception Policy Optimization","Context Retrieval":"Top-3 documents"}. This record does not assert independent reproduction.

### GRPO

Exact Match (EM): 30.3. Result ID: 699633a25698665ec475d5ee.

[Reporting paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa73101e209131cea5a395.md>)

[Implementation](<https://github.com/deepseek-ai/DeepSeek-Math>)

Recorded evaluation configuration: {"Backbone":"Qwen2.5-3B-Instruct","Strategy":"GRPO","Context Retrieval":"Top-3 documents"}. This record does not assert independent reproduction.

### PPO

Exact Match (EM): 29.3. Result ID: 699633a25698665ec475d5ed.

[Reporting paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa63a01e209131ce9ffdaa.md>)

Recorded evaluation configuration: {"Backbone":"Qwen2.5-3B-Instruct","Strategy":"PPO","Context Retrieval":"Top-3 documents"}. This record does not assert independent reproduction.

### M3PO

Exact Match (EM): 27.9. Result ID: 699633a25698665ec475d5ea.

[Reporting paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

[Method origin paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

Recorded evaluation configuration: {"Backbone":"Qwen2.5-1.5B-Instruct","Strategy":"Multi-Path Perception Policy Optimization","Context Retrieval":"Top-3 documents"}. This record does not assert independent reproduction.

### HRPO

Exact Match (EM): 27.6. Result ID: 699633a25698665ec475d5e9.

[Reporting paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa78c91e209131cea7a81d.md>)

Recorded evaluation configuration: {"Backbone":"Qwen2.5-1.5B-Instruct","Strategy":"Hybrid Reasoning Policy Optimization","Context Retrieval":"Top-3 documents"}. This record does not assert independent reproduction.

### QA

Exact Match (EM): 25. Result ID: 699633a25698665ec475d5e0.

[Reporting paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

Recorded evaluation configuration: {"Backbone":"Qwen2.5-7B-Instruct","Strategy":"Direct inference","Context Retrieval":"Top-3 documents"}. This record does not assert independent reproduction.

### SFT

Exact Match (EM): 24.8. Result ID: 699633a25698665ec475d5eb.

[Reporting paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

Recorded evaluation configuration: {"Backbone":"Qwen2.5-3B-Instruct","Strategy":"Supervised Fine-Tuning","Context Retrieval":"Top-3 documents"}. This record does not assert independent reproduction.

### PPO

Exact Match (EM): 24.2. Result ID: 699633a25698665ec475d5e7.

[Reporting paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa63a01e209131ce9ffdaa.md>)

Recorded evaluation configuration: {"Backbone":"Qwen2.5-1.5B-Instruct","Strategy":"PPO","Context Retrieval":"Top-3 documents"}. This record does not assert independent reproduction.

### RAG

Exact Match (EM): 23.5. Result ID: 699633a25698665ec475d5e4.

[Reporting paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa69b91e209131cea23c26.md>)

[Implementation](<https://github.com/huggingface/transformers/blob/master/examples/rag/>)

Recorded evaluation configuration: {"Backbone":"Qwen2.5-7B-Instruct","Strategy":"Retrieval-Augmented Generation","Context Retrieval":"Top-3 documents"}. This record does not assert independent reproduction.

### RAG

Exact Match (EM): 22.6. Result ID: 699633a25698665ec475d5ec.

[Reporting paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa69b91e209131cea23c26.md>)

[Implementation](<https://github.com/huggingface/transformers/blob/master/examples/rag/>)

Recorded evaluation configuration: {"Backbone":"Qwen2.5-3B-Instruct","Strategy":"Retrieval-Augmented Generation","Context Retrieval":"Top-3 documents"}. This record does not assert independent reproduction.

### GRPO

Exact Match (EM): 21.3. Result ID: 699633a25698665ec475d5e8.

[Reporting paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa73101e209131cea5a395.md>)

[Implementation](<https://github.com/deepseek-ai/DeepSeek-Math>)

Recorded evaluation configuration: {"Backbone":"Qwen2.5-1.5B-Instruct","Strategy":"GRPO","Context Retrieval":"Top-3 documents"}. This record does not assert independent reproduction.

### SFT

Exact Match (EM): 21. Result ID: 699633a25698665ec475d5e5.

[Reporting paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

Recorded evaluation configuration: {"Backbone":"Qwen2.5-1.5B-Instruct","Strategy":"Supervised Fine-Tuning","Context Retrieval":"Top-3 documents"}. This record does not assert independent reproduction.

### RAG

Exact Match (EM): 20.3. Result ID: 699633a25698665ec475d5e6.

[Reporting paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa69b91e209131cea23c26.md>)

[Implementation](<https://github.com/huggingface/transformers/blob/master/examples/rag/>)

Recorded evaluation configuration: {"Backbone":"Qwen2.5-1.5B-Instruct","Strategy":"Retrieval-Augmented Generation","Context Retrieval":"Top-3 documents"}. This record does not assert independent reproduction.

### Search-o1

Exact Match (EM): 17.6. Result ID: 699633a25698665ec475d5e3.

[Reporting paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa76911e209131cea6dca9.md>)

[Implementation](<https://github.com/sunnynexus/Search-o1>)

Recorded evaluation configuration: {"Backbone":"Qwen2.5-7B-Instruct","Strategy":"Search-o1","Context Retrieval":"Top-3 documents"}. This record does not assert independent reproduction.

### IRCoT

Exact Match (EM): 14.9. Result ID: 699633a25698665ec475d5e2.

[Reporting paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa6fd81e209131cea4791d.md>)

[Implementation](<https://github.com/stonybrooknlp/ircot>)

Recorded evaluation configuration: {"Backbone":"Qwen2.5-7B-Instruct","Strategy":"Interleaved retrieval with CoT","Context Retrieval":"Top-3 documents"}. This record does not assert independent reproduction.

### CoT

Exact Match (EM): 11.1. Result ID: 699633a25698665ec475d5e1.

[Reporting paper](<https://www.sota2.com/research/paper/692e7315d6b0dd3342932746.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa6e571e209131cea3f27b.md>)

Recorded evaluation configuration: {"Backbone":"Qwen2.5-7B-Instruct","Strategy":"Chain-of-Thought","Context Retrieval":"Top-3 documents"}. This record does not assert independent reproduction.

Page 1 of 1. This is an index page, not the full collection.
