Update README.md

README.md

@@ -98,18 +98,25 @@ The dataset was created by **Vilnius University** (Institute of Data Science and
 ## Dataset Structure
 
 ### Data Format
-* **Audio:** `.wav` format, 16 kHz sampling rate, 16-bit quantization, 1 channel (mono).
-* **Annotations:** `.eaf` format.
-
-### Data Instances
-Each data instance consists of a `.wav` audio file and its corresponding `.eaf` text annotation.
-
-### Data Content
-The recordings cover a wide range of topics and styles to ensure acoustic diversity (sequences of words/phrases, read and spontaneous speech). The content includes:
-* Excerpts from books by Lithuanian and foreign authors.
-* Current news broadcasts.
-* Texts for children, fairy tales, and myths.
-* **Specific Domains:** Art (graphics, music, theater, movies), Politics, Education/School, Psychology, Memoirs, Geography, Recipes, History, Nature, Automotive, IT, Sports, Origins of objects, etc.
+This dataset is **SLICED** for ASR training. Each row represents a single audio segment (utterance or noise event).
+
+*   **Audio**: The sliced audio segment (WAV, 16kHz).
+*   **Text**: The transcription of the segment.
+    *   For **Noise Segments** (`is_noise=True`), the text contains the noise label (e.g., `+BREATH+`, `+SMACK+`, `+GARBAGE+`).
+*   **Metadata Fields**:
+    *   `is_noise`: **Boolean**. `True` if the segment represents a noise event, `False` for speech. **Note**: The dataset explicitely includes noise segments as separate rows for training stability/negative sampling.
+    *   `speaker_id`: Unique speaker identifier.
+    *   `gender`: `Female` / `Male`.
+    *   `age_group`: e.g., `26-60`, `0-12`.
+    *   `duration_ms`: Length of segment in milliseconds.
+    *   `tags`: List of entry-level tags (e.g., `['abc']` for alphabet reading).
+    *   `annotator`: 2-letter code of the annotator (derived from Speaker ID).
+    *   `entry_id`: ID of the original recording (EAF file).
+    *   `segment_id`: ID of the segment within the recording.
+    *   `start_ms` / `end_ms`: Timestamp in the original file.
+
+### Original Documentation
+For the full labeling protocol and noise class definitions, please refer to the **[readme.pdf](./doc/LIEPA-2-readme.pdf)** included in the repository root.
 
 ## Additional Information
 
@@ -120,7 +127,7 @@ The LIEPA-2 dataset is distributed under the **CC BY (Creative Commons Attributi
 When using this dataset for the development of other products, please mention in your product description that the dataset was created at **Vilnius University** under the project **"Lietuvių šneka valdomų paslaugų plėtra – LIEPA 2"**.
 
 ### Contact
-For access to the full dataset, please contact: **gediminas.navickas@mif.vu.lt**
+For access to the original dataset, please contact: **gediminas.navickas@mif.vu.lt**
 
 * **Project Website:** [liepa2.rastija.lt](http://liepa2.rastija.lt)
 * **Creators:** Vilnius University (Institute of Mathematics and Informatics, Faculty of Philology).