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Home / Proceedings / Proceedings of the AAAI Conference on Artificial Intelligence, 27 / No. 1: Twenty-Seventh AAAI Conference on Artificial Intelligence

HC-Search: Learning Heuristics and Cost Functions for Structured Prediction

March 8, 2023

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Authors

Janardhan Rao Doppa

Oregon State University


Alan Fern

Oregon State University


Prasad Tadepalli

Oregon State University


DOI:

10.1609/aaai.v27i1.8664


Abstract:

Structured prediction is the problem of learning a function from structured inputs to structured outputs with prototypical examples being part-of-speech tagging and image labeling. Inspired by the recent successes of search-based structured prediction, we introduce a new framework for structured prediction called {em HC-Search}. Given a structured input, the framework uses a search procedure guided by a learned heuristic H to uncover high quality candidate outputs and then uses a separate learned cost function C to select a final prediction among those outputs. We can decompose the regret of the overall approach into the loss due to H not leading to high quality outputs, and the loss due to C not selecting the best among the generated outputs. Guided by this decomposition, we minimize the overall regret in a greedy stage-wise manner by first training H to quickly uncover high quality outputs via imitation learning, and then training C to correctly rank the outputs generated via H according to their true losses. Experiments on several benchmark domains show that our approach significantly outperforms the state-of-the-art methods.

Topics: AAAI

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HOW TO CITE:

Janardhan Rao Doppa|| Alan Fern|| Prasad Tadepalli HC-Search: Learning Heuristics and Cost Functions for Structured Prediction Proceedings of the AAAI Conference on Artificial Intelligence, 27 (2013) 253.

Janardhan Rao Doppa|| Alan Fern|| Prasad Tadepalli HC-Search: Learning Heuristics and Cost Functions for Structured Prediction AAAI 2013, 253.

Janardhan Rao Doppa|| Alan Fern|| Prasad Tadepalli (2013). HC-Search: Learning Heuristics and Cost Functions for Structured Prediction. Proceedings of the AAAI Conference on Artificial Intelligence, 27, 253.

Janardhan Rao Doppa|| Alan Fern|| Prasad Tadepalli. HC-Search: Learning Heuristics and Cost Functions for Structured Prediction. Proceedings of the AAAI Conference on Artificial Intelligence, 27 2013 p.253.

Janardhan Rao Doppa|| Alan Fern|| Prasad Tadepalli. 2013. HC-Search: Learning Heuristics and Cost Functions for Structured Prediction. "Proceedings of the AAAI Conference on Artificial Intelligence, 27". 253.

Janardhan Rao Doppa|| Alan Fern|| Prasad Tadepalli. (2013) "HC-Search: Learning Heuristics and Cost Functions for Structured Prediction", Proceedings of the AAAI Conference on Artificial Intelligence, 27, p.253

Janardhan Rao Doppa|| Alan Fern|| Prasad Tadepalli, "HC-Search: Learning Heuristics and Cost Functions for Structured Prediction", AAAI, p.253, 2013.

Janardhan Rao Doppa|| Alan Fern|| Prasad Tadepalli. "HC-Search: Learning Heuristics and Cost Functions for Structured Prediction". Proceedings of the AAAI Conference on Artificial Intelligence, 27, 2013, p.253.

Janardhan Rao Doppa|| Alan Fern|| Prasad Tadepalli. "HC-Search: Learning Heuristics and Cost Functions for Structured Prediction". Proceedings of the AAAI Conference on Artificial Intelligence, 27, (2013): 253.

Janardhan Rao Doppa|| Alan Fern|| Prasad Tadepalli. HC-Search: Learning Heuristics and Cost Functions for Structured Prediction. AAAI[Internet]. 2013[cited 2023]; 253.


ISSN: 2374-3468


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