|Title||Write, Execute, Assess: Program Synthesis with a REPL|
|Publication Type||Conference Proceedings|
|Year of Publication||2019|
|Authors||Ellis, K, Nye, M, Pu, Y, Sosa, F, Tenenabum, JB, Solar-Lezama, A|
|Conference Name||Neural Information Processing Systems (NeurIPS 2019)|
|Conference Location||Vancouver, Canada|
We present a neural program synthesis approach integrating components which write, execute, and assess code to navigate the search space of possible programs. We equip the search process with an interpreter or a read-eval-print-loop (REPL), which immediately executes partially written programs, exposing their semantics. The REPL addresses a basic challenge of program synthesis: tiny changes in syntax can lead to huge changes in semantics. We train a pair of models, a policy that proposes the new piece of code to write, and a value function that assesses the prospects of the code written so-far. At test time we can combine these models with a Sequential Monte Carlo algorithm. We apply our approach to two domains: synthesizing text editing programs and inferring 2D and 3D graphics programs.
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