Introduction to Natural Language Processing (600.465)Statistical Machine Translation

The Main Idea

The Necessities

The Language Model

The Translation Models

The Alignment

Alignment Mapping

Elements of Translation Model(s)

Decomposition

Decomposition and the Generative Model

Approximations

Model 1

Models 2-5

The Search Procedure

Analysis - Translation - Generation (ATG)

Training vs. Test with ATG

Analysis: Tagging and Morphology

Word Sense Disambiguation, Word Chunking

Generation