Memento

This group of tasks test the agent’s ability to use memory (within an episode) to pick the correct path. The agent is presented with a prompt (in the form of a sleeping monster of a specific type), and then navigates along a corridor. At the end of the corridor the agent reaches a fork, and must choose a direction. One direction leads to a grid bug, which if killed terminates the episode with +1 reward. All other directions lead to failure through a invisible trap that terminates the episode when activated. The correct path is determined by the cue seen at the beginning of the episode.

We provide three versions of this environment: one with a short corridor before a fork with two paths to choose from (MiniHack-Memento-Short-F2-v0), one with a long corridor with a two-path fork (MiniHack-Memento-F2-v0), and one with a long corridor and a four-fork path (MiniHack-Memento-F4-v0).

An example of the MiniHack-Memento-F4-v0 task:

Reward

The agent receives a reward of 1 for killing the grid bug (navigating along the correct corridor) and -1 for stepping on the trap (naving along the incorrect corridor). Both events terminate the episode.

Source

All Environments

Name

Capability

MiniHack-Memento-Short-F2-v0

Memory

MiniHack-Memento-F2-v0

Memory

MiniHack-Memento-F4-v0

Memory