TAILIEUCHUNG - Báo cáo khoa học: "Learning to Follow Navigational Directions"

We present a system that learns to follow navigational natural language directions. Where traditional models learn from linguistic annotation or word distributions, our approach is grounded in the world, learning by apprenticeship from routes through a map paired with English descriptions. Lacking an explicit alignment between the text and the reference path makes it difficult to determine what portions of the language describe which aspects of the route. | Learning to Follow Navigational Directions Adam Vogel and Dan Jurafsky Department of Computer Science Stanford University acvogel jurafsky @ Abstract We present a system that learns to follow navigational natural language directions. Where traditional models learn from linguistic annotation or word distributions our approach is grounded in the world learning by apprenticeship from routes through a map paired with English descriptions. Lacking an explicit alignment between the text and the reference path makes it difficult to determine what portions of the language describe which aspects of the route. We learn this correspondence with a reinforcement learning algorithm using the deviation of the route we follow from the intended path as a reward signal. We demonstrate that our system successfully grounds the meaning of spatial terms like above and south into geometric properties of paths. 1 Introduction Spatial language usage is a vital component for physically grounded language understanding systems. Spoken language interfaces to robotic assistants Wei et al. 2009 and Geographic Information Systems Wang et al. 2004 must cope with the inherent ambiguity in spatial descriptions. The semantics of imperative and spatial language is heavily dependent on the physical setting it is situated in motivating automated learning approaches to acquiring meaning. Traditional accounts of learning typically rely on linguistic annotation Zettlemoyer and Collins 2009 or word distributions Curran 2003 . In contrast we present an apprenticeship learning system which learns to imitate human instruction following without linguistic annotation. Solved using a reinforcement learning algorithm our system acquires the meaning of spatial words through 1. go vertically down until you re underneath eh diamond mine 2. then eh go right until you re 3. you re between springbok and highest viewpoint Figure 1 A path appears on the instruction giver s map who describes it to the .

TỪ KHÓA LIÊN QUAN
TAILIEUCHUNG - Chia sẻ tài liệu không giới hạn
Địa chỉ : 444 Hoang Hoa Tham, Hanoi, Viet Nam
Website : tailieuchung.com
Email : tailieuchung20@gmail.com
Tailieuchung.com là thư viện tài liệu trực tuyến, nơi chia sẽ trao đổi hàng triệu tài liệu như luận văn đồ án, sách, giáo trình, đề thi.
Chúng tôi không chịu trách nhiệm liên quan đến các vấn đề bản quyền nội dung tài liệu được thành viên tự nguyện đăng tải lên, nếu phát hiện thấy tài liệu xấu hoặc tài liệu có bản quyền xin hãy email cho chúng tôi.
Đã phát hiện trình chặn quảng cáo AdBlock
Trang web này phụ thuộc vào doanh thu từ số lần hiển thị quảng cáo để tồn tại. Vui lòng tắt trình chặn quảng cáo của bạn hoặc tạm dừng tính năng chặn quảng cáo cho trang web này.