Update README.md

README.md

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----
-license: mit
-configs:
-- config_name: default
-  data_files:
-  - split: train
-    path: data/train-*
-dataset_info:
-  features:
-  - name: instance_id
-    dtype: string
-  - name: patch
-    dtype: string
-  - name: repo
-    dtype: string
-  - name: base_commit
-    dtype: string
-  - name: hints_text
-    dtype: string
-  - name: created_at
-    dtype: string
-  - name: test_patch
-    dtype: string
-  - name: problem_statement
-    dtype: string
-  - name: version
-    dtype: string
-  - name: environment_setup_commit
-    dtype: string
-  - name: FAIL_TO_PASS
-    sequence: string
-  - name: PASS_TO_PASS
-    sequence: string
-  - name: meta
-    struct:
-    - name: failed_lite_validators
-      sequence: string
-    - name: has_test_patch
-      dtype: bool
-    - name: is_lite
-      dtype: bool
-  splits:
-  - name: train
-    num_bytes: 101732749
-    num_examples: 6426
-  download_size: 27722795
-  dataset_size: 101732749
----
+---
+license: mit
+configs:
+- config_name: default
+  data_files:
+  - split: train
+    path: data/train-*
+dataset_info:
+  features:
+  - name: instance_id
+    dtype: string
+  - name: patch
+    dtype: string
+  - name: repo
+    dtype: string
+  - name: base_commit
+    dtype: string
+  - name: hints_text
+    dtype: string
+  - name: created_at
+    dtype: string
+  - name: test_patch
+    dtype: string
+  - name: problem_statement
+    dtype: string
+  - name: version
+    dtype: string
+  - name: environment_setup_commit
+    dtype: string
+  - name: FAIL_TO_PASS
+    sequence: string
+  - name: PASS_TO_PASS
+    sequence: string
+  - name: meta
+    struct:
+    - name: failed_lite_validators
+      sequence: string
+    - name: has_test_patch
+      dtype: bool
+    - name: is_lite
+      dtype: bool
+  splits:
+  - name: train
+    num_bytes: 101732749
+    num_examples: 6426
+  download_size: 27722795
+  dataset_size: 101732749
+---
+
+# Dataset Summary
+SWE-bench Extra is a dataset that can be used to train or evaluate agentic systems specializing in resolving GitHub issues. It is based on the methodology used to build SWE-bench benchmark and includes 6,448 Issue-Pull Request pairs sourced from 2,133 Python repositories.
+
+# Dataset Description
+The SWE-bench Extra dataset supports the development of software engineering agents capable of autonomously solving GitHub issues. The data collection process, based on the SWE-bench methodology, involves the following steps:
+
+1. **Issue and Pull Request Collection**: Issues are gathered and linked with pull requests that successfully resolve them.
+2. **Filtering**: Instances are filtered based on attributes such as issue descriptions, relevant code paths, and test patches.
+3. **Execution-based Validation**: The project environments are set up and tests are run to verify that they execute correctly.
+
+For a more detailed description of the data collection process, please refer to our blog post. [link]
+
+As an example use case of this dataset, we’ve used SWE-bench-extra instances to generate a dataset of 84,480 trajectories (`nebius/swe-agent-trajectories` [link]). We’ve then trained an action generator model, that achieves a score of 19.2% on the subset of 50 random instances from the SWE-bench Verified benchmark, outperforming its parent model `Qwen2.5-72B-Instruct` by 30% relative improvement. Further augmenting the action generator with a guided search based on a critic model, also trained on this data, achieves 40.6% on the full SWE-bench Verified benchmark, which is state-of-the-art among agents using solely open-weight models. You can read more about this agent in our blog post, *“Leveraging Training and Search for Better Software Engineering Agents”* [https://nebius.com/blog/posts/training-and-search-for-software-engineering-agents].
+
+# How to Use
+
+```python
+from datasets import load_dataset
+ds = load_dataset('nebius/SWE-bench-extra')
+```
+
+# Dataset Statistics
+Average, 75th percentile, and maximum values characterizing various attributes of the collected instances. Statistics are micro-averaged without grouping by repository.
+
+| Data          | Type               | Mean     | p75      | Max       |
+|---------------|--------------------|----------|----------|-----------|
+| Issue text    | Length (words)     | 111.5    | 146      | 1,294     |
+| Code base     | Files (Non-test)   | 71.71    | 72.00    | 2,264     |
+|               | Lines (Non-test)   | 15,163.38| 13,777   | 1,039,288 |
+| Gold patch    | Files edited       | 2.6      | 3        | 7         |
+|               | Lines edited       | 56       | 76       | 300       |
+| Tests         | Fail to Pass       | 10.94    | 5        | 4,941     |
+|               | Total              | 58.5     | 49       | 7,820     |
+
+# Dataset Structure
+The dataset contains the following fields. It includes all fields from SWE-bench and adds a `meta` column, which indicates whether the instance meets the "lite" criteria and, if not, lists the failed validators.
+
+| Field name                 | Type   | Description                                                                                     |
+|----------------------------|--------|-------------------------------------------------------------------------------------------------|
+| `instance_id`              | str    | A formatted instance identifier, usually as `repo_owner__repo_name-PR-number`.                 |
+| `patch`                    | str    | The gold patch, the patch generated by the PR (minus test-related code), that resolved the issue. |
+| `repo`                     | str    | The repository owner/name identifier from GitHub.                                              |
+| `base_commit`              | str    | The commit hash of the repository representing the HEAD of the repository before the solution PR is applied. |
+| `hints_text`               | str    | Comments made on the issue prior to the creation of the solution PR’s first commit creation date. |
+| `created_at`               | str    | The creation date of the pull request.                                                         |
+| `test_patch`               | str    | A test-file patch that was contributed by the solution PR.                                     |
+| `problem_statement`        | str    | The issue title and body.                                                                      |
+| `version`                  | str    | Installation version to use for running evaluation.                                            |
+| `environment_setup_commit` | str    | Commit hash to use for environment setup and installation.                                     |
+| `FAIL_TO_PASS`             | str    | A JSON list of strings that represent the set of tests resolved by the PR and tied to the issue resolution. |
+| `PASS_TO_PASS`             | str    | A JSON list of strings that represent tests that should pass before and after the PR application. |
+| `meta`                     | str    | A JSON dictionary indicating whether the instance is lite, along with a list of failed lite validators if it is not. |
+
+To execute instances within SWE-bench, you need to provide a default recipe for dependency installation. The constants required for running these instances are described in this [link].
+
+# Licensing Information
+All dataset contents are available under the MIT license.