README: add P75_bottle, refresh stats (26 trials / 700 eps / 65.8 min)

README.md

@@ -18,13 +18,13 @@ A multimodal egocentric manipulation dataset combining **Project Aria** smart-gl
 
 ## Overview
 
-- **25 trials**, **649 episodes**, **~62.7 min** of segmented manipulation, ~1.9 GB
+- **26 trials**, **700 episodes**, **~65.8 min** of segmented manipulation, ~2.0 GB
 - **Recording dates**: 2026-01-10, 2026-01-21, 2026-01-28, 2026-04-30, 2026-05-06
 - **Camera**: Project Aria RGB (1408×1408, **10 fps**, H.264)
 - **Tactile**: bilateral force totals (`action.tactile.left.force_total`, `action.tactile.right.force_total`)
 - **Hand pose**: Aria MPS hand tracking (left + right, validity flags, confidence)
 - **Gaze**: Aria MPS general eye gaze (yaw/pitch + depth)
-- **Mean episode length**: 5.8 s (37,633 frames @ 10 fps)
+- **Mean episode length**: 5.6 s (39,497 frames @ 10 fps)
 
 ## Dataset statistics
 
@@ -36,21 +36,23 @@ A multimodal egocentric manipulation dataset combining **Project Aria** smart-gl
 | 2026-01-21 |      7 |      137 | 11,106 |           18.5 |
 | 2026-01-28 |      5 |      132 |  8,481 |           14.1 |
 | 2026-04-30 |      2 |       82 |  4,761 |            7.9 |
-| 2026-05-06 |      8 |      256 |  9,720 |           16.2 |
-| **Total**  | **25** |  **649** | **37,633** |     **62.7** |
+| 2026-05-06 |      9 |      307 | 11,584 |           19.3 |
+| **Total**  | **26** |  **700** | **39,497** |     **65.8** |
 
 ### By object category
 
 | Category | Trials | Episodes | Frames | Duration (min) |
 |----------|-------:|---------:|-------:|---------------:|
+| Bottle   |      5 |      237 | 10,811 |           18.0 |
 | Jelly    |      6 |      115 | 10,232 |           17.1 |
-| Bottle   |      4 |      186 |  8,947 |           14.9 |
 | Sponge   |      3 |      107 |  6,548 |           10.9 |
 | Water    |      4 |       70 |  4,860 |            8.1 |
 | Wangzai  |      4 |      116 |  4,294 |            7.2 |
 | Coke     |      2 |       19 |  1,512 |            2.5 |
 | Chip     |      2 |       36 |  1,240 |            2.1 |
 
+The **Bottle** category includes a fill-level gradient (`Empty_bottle_1`, `P25_bottle`, `P50_bottle`, `P75_bottle`, `Full_bottle_1`) for studying tactile cues of liquid mass and slosh.
+
 ## Layout
 
 Datasets are grouped by recording session date. Trial names encode the manipulation outcome where relevant (e.g. `Chip_intact` = potato chip not crushed, `Chip_crushed` = chip crushed during grasp).
@@ -62,7 +64,7 @@ FeelAuthors/FEEL-Benchmark/
 ├── 20260128/  Half_water_{3,4}, Sponge_{1,2,3}                                           (5 trials)
 ├── 20260430/  Empty_bottle_1, Full_bottle_1                                              (2 trials)
 └── 20260506/  Chip_intact, Chip_crushed, Empty_Want_Milk, Empty_wz, P25_bottle,
-              P50_bottle, Want_Milk, Wz                                                   (8 trials)
+              P50_bottle, P75_bottle, Want_Milk, Wz                                       (9 trials)
 ```
 
 Each `*_lerobot/` directory follows LeRobot v3.0:
@@ -75,7 +77,7 @@ Each `*_lerobot/` directory follows LeRobot v3.0:
 │   ├── stats.json
 │   └── tasks.jsonl
 ├── data/chunk-000/episode_NNNNNN.parquet
-└── videos/chunk-000/main/episode_NNNNNN.mp4
+└── videos/chunk-000/observation.images.main/episode_NNNNNN.mp4
 ```
 
 ## Feature schema