Add dataset card (cleaned)

README.md

@@ -1,57 +1,44 @@
 ---
-dataset_info:
-  features:
-  - name: messages
-    list:
-    - name: role
-      dtype: string
-    - name: content
-      dtype: string
-  - name: metadata
-    struct:
-    - name: task_type
-      dtype: string
-    - name: description
-      dtype: string
-    - name: room_type
-      dtype: string
-    - name: difficulty
-      dtype: string
-    - name: num_steps
-      dtype: int64
-    - name: has_recovery_steps
-      dtype: bool
-    - name: has_close_open
-      dtype: bool
-    - name: has_admissible
-      dtype: bool
-    - name: num_actions
-      dtype: int64
-    - name: num_observations
-      dtype: int64
-    - name: num_detours
-      dtype: int64
-    - name: num_recovery_steps
-      dtype: int64
-    - name: has_open_action
-      dtype: bool
-    - name: subgoals
-      list: string
-    - name: total_chars
-      dtype: int64
-    - name: trajectory_outcome
-      dtype: string
-    - name: failure_reason
-      dtype: string
-  splits:
-  - name: train
-    num_bytes: 7654801
-    num_examples: 2277
-  download_size: 1475261
-  dataset_size: 7654801
-configs:
-- config_name: default
-  data_files:
-  - split: train
-    path: data/train-*
+license: mit
+task_categories:
+- text-generation
+- conversational
+language:
+- en
+tags:
+- synthetic
+- sft
+- agent
+- alfworld
 ---
+
+# ALFWorld Trajectory Dataset v5 (Cleaned)
+
+This dataset is a cleaned derivative of:
+
+- `u-10bei/sft_alfworld_trajectory_dataset_v5`
+  - https://huggingface.co/datasets/u-10bei/sft_alfworld_trajectory_dataset_v5
+
+## What was removed?
+
+We removed samples that contain the string **`Nothing happens.`** (case-insensitive) in any **user** message.
+
+Rationale: those trajectories typically correspond to invalid / non-admissible actions (e.g. hallucinated object ids)
+and can increase the probability of illegal actions after SFT.
+
+## Stats
+
+- total rows: 2502
+- removed rows: 225
+- kept rows: 2277
+
+## Schema
+
+Same as the source dataset:
+
+- `messages`: list of `{role, content}`
+- `metadata`: dict
+
+## Created
+
+- 2026-02-21T09:41:34+00:00 (UTC)