Lilian Weng on long-term memory

Lilian Weng on long-term memory:

There are two subtypes of LTM:

• Explicit / declarative memory: This is memory of facts and events, and refers to those memories that can be consciously recalled, including episodic memory (events and experiences) and semantic memory (facts and concepts).
• Implicit / procedural memory: This type of memory is unconscious and involves skills and routines that are performed automatically, like riding a bike or typing on a keyboard.

This is from a post from 2023 about autonomous agents, best known for laying out the LLM + memory + tool concept.