Update README.md

README.md

@@ -16,6 +16,7 @@ This dataset comprises both positive and negative samples of audio of 1 second i
 Negative samples include music, voice, claps, whistles and vacuum cleaner noise, among other sound you may record inside a house.
 
 Caveats:
+- This is an imbalanced dataset: ~10k negatives vs ~500 positives.
 - Positive samples may include human generated barks.
 - Some (few) positive samples are false positives.
 
@@ -33,14 +34,14 @@ dataset = load_dataset("rmarcosg/bark-detection", split="train")
 
 ```
 {
-  'file_id': 'no/20221203_185908.wav',
+  'file_id': '20221203_185908.wav',
   'audio': {
-    'path': 'no/20221203_185908.wav',
+    'path': 'train/no/20221203_185908.wav',
     'array': array([ 6.10351562e-05, -3.05175781e-05, -3.05175781e-05, ...,
       6.10351562e-05, -1.22070312e-04,  1.83105469e-04]),
     'sampling_rate': 44100
   },
-  'label': 0
+  'label': 'no'
 }
 ```