7 Commits

Author	SHA1	Message	Date
Pyry Takala	cd782a1977	Fix: Validate stop parameter against dataset size ... Add validation in Task.__len__() to ensure stop parameter does not exceed the actual dataset size. This prevents IndexError crashes during training when invalid stop values are provided. The validation is centralized in the base Task class and preserves the original lazy evaluation behavior - num_examples() is only called when needed (for validation when stop is provided, or for default value when stop is None). Fixes issue where training would crash with IndexError when iterating over Task instances with stop > dataset_size.	2025-11-20 04:18:42 +00:00
svlandeg	c72b8b2309	add explicit UTF-8 encoding	2025-11-03 21:27:12 +01:00
Andrej Karpathy	05a051dbe9	fix tokenization bug, there should be no space before first letter. sigh	2025-10-24 15:06:06 +00:00
Andrej Karpathy	8892470f29	add the SpellingBee task so that nanochat can count r in strawberry etc. along the way we had to add a bunch of new functionality, e.g. extend the calculator to support the count function of python. possibly the current TaskMixture uses way too many synthetic examples of SpellingBee because the eval gives us exactly 100% performance on spelling. We can tune this later to reclaim some wall clock time here I think	2025-10-24 14:02:48 +00:00
Andrej Karpathy	03cddd9878	actually let's not brick code on git pull. change error to warning	2025-10-21 15:13:25 +00:00
Andrej Karpathy	fe5aed940b	add personality to nanochat. breaks previous code on git pull and requires download of a new file from s3, but there is a helpful error message so hopefully its ok	2025-10-21 15:04:58 +00:00
karpathy	3a5e0bc50b	initial commit	2025-10-13 06:49:24 -07:00