Update README.md

README.md

@@ -33,6 +33,9 @@ The AlphaNum dataset caters to a variety of use cases including text recognition
 ## Null Category Image Generation
 The 'null' category comprises images generated by injecting noise to mimic randomly distributed light pixels. The creation of these images is accomplished through the following Python script:
 This approach is particularly valuable as it enables the model to effectively disregard specific areas of the training data by utilizing a 'null' label. By doing so, the model becomes better at recognizing letters and can ignore irrelevant parts, enhancing its performance in reallive OCR tasks.
+
+The 'null' labelled images in this dataset have been generated using the following algorithm. 
+(Please note that this is a non-deterministic approach, so you will most likely get different results.)
 ```python
 import os
 import numpy as np