Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Linear Representation Meta-Reinforcement Learning for Instant Adaptation   This paper introduces Fast Linearized Adaptive Policy (FLAP), a new
meta-reinforcement learning (meta-RL) method that is able to extrapolate well
to out-of-distribution tasks without the need to reuse data from training, and
adapt almost instantaneously with the need of only a few samples during
testing. FLAP builds upon the idea of learning a shared linear representation
of the policy so that when adapting to a new task, it suffices to predict a set
of linear weights. A separate adapter network is trained simultaneously with
the policy such that during adaptation, we can directly use the adapter network
to predict these linear weights instead of updating a meta-policy via gradient
descent, such as in prior meta-RL methods like MAML, to obtain the new policy.
The application of the separate feed-forward network not only speeds up the
adaptation run-time significantly, but also generalizes extremely well to very
different tasks that prior Meta-RL methods fail to generalize to. Experiments
on standard continuous-control meta-RL benchmarks show FLAP presenting
significantly stronger performance on out-of-distribution tasks with up to
double the average return and up to 8X faster adaptation run-time speeds when
compared to prior methods.

20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics