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• W2990366588 abstract "One of the main obstacles for developing flexible AI systems is the split between data-based learners and model-based solvers. Solvers such as classical planners are very flexible and can deal with a variety of problem instances and goals but require first-order symbolic models. Data-based learners, on the other hand, are robust but do not produce such representations. In this work we address this split by showing how the first-order symbolic representations that are used by planners can be learned from non-symbolic inputs that encode the structure of the state space. The representation learning problem is formulated as the problem of inferring planning instances over a common but unknown first-order domain that account for the structure of the observed state space. This means to infer a complete first-order representation (i.e. general action schemas, relational symbols, and objects) that explains the observed state space structures. The inference problem is cast as a two-level combinatorial search where the outer level searches for values of a small set of hyperparameters and the inner level, solved via SAT, searches for a first-order symbolic model. The framework is shown to produce general and correct first-order representations for standard problems like Gripper, Blocksworld, and Hanoi from input graphs that encode the flat state-space structure of a single instance." @default.
• W2990366588 created "2019-12-05" @default.
• W2990366588 creator A5010562834 @default.
• W2990366588 creator A5046427368 @default.
• W2990366588 date "2019-09-12" @default.
• W2990366588 modified "2023-09-27" @default.
• W2990366588 title "Learning First-Order Symbolic Representations for Planning from the Structure of the State Space" @default.
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• W2990366588 hasPublicationYear "2019" @default.
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