Approximation-aware Dependency Parsing by Belief - PowerPoint PPT Presentation

Nov 02, 2022 •378 likes •833 views

Approximation-aware Dependency Parsing by Belief Propagation Matt Gormley Mark Dredze Jason Eisner September 19, 2015 TACL at EMNLP 1

Approximation-‑aware ¡ ¡ Dependency ¡Parsing ¡by ¡ ¡ Belief ¡Propagation ¡ Matt ¡Gormley ¡ Mark ¡Dredze ¡ Jason ¡Eisner ¡ September ¡19, ¡2015 ¡ TACL ¡at ¡EMNLP ¡ 1 ¡
Motivation ¡#1: ¡ ¡ Approximation-‑ un aware ¡Learning ¡ Problem: ¡ Approximate ¡inference ¡causes ¡standard ¡ learning ¡algorithms ¡to ¡go ¡awry ¡ ¡ (Kulesza ¡& ¡Pereira, ¡2008) ¡ ¡ with ¡approx. ¡inference: ¡ with ¡exact ¡inference: ¡ Can ¡we ¡take ¡our ¡ ¡ approximations ¡ ¡ into ¡account? ¡ 2 ¡
Motivation ¡#2: ¡ ¡ Hybrid ¡Models ¡ Graphical ¡models ¡ let ¡you ¡ Neural ¡nets ¡ are ¡really ¡ encode ¡domain ¡ good ¡at ¡fitting ¡the ¡data ¡ knowledge ¡ discriminatively ¡to ¡make ¡ good ¡predictions ¡ … ¡ … ¡ … ¡ Could ¡we ¡define ¡a ¡neural ¡net ¡ ¡ that ¡incorporates ¡ ¡ domain ¡knowledge? ¡ 3 ¡
Our ¡Solution ¡ Key ¡idea: ¡ Treat ¡your ¡ unrolled ¡approximate ¡ inference ¡algorithm ¡as ¡a ¡ deep ¡network ¡ … ¡ …" … ¡ …" …" Chart parser: … ¡ …" …" …" …" 4 ¡

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