Genetic policy search using exemplar based representations

نویسنده

  • Kokolo IKEDA
چکیده

Direct policy search (DPS) is a method for machine learning, where the policy is represented by some parameters and they are optimized by evaluating the policy directly. We introduce exemplar based policy (EBP) optimization as a framework of DPS. An EBP is a policy composed of a set of exemplars which is parameter to be optimised, and a case-based action selector. An actual implementation with GA optimiser, genetic policy search, is introduced and its performances in two problem domains are shown.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Improving Exemplar-based Image Completion methods using Selecting the Optimal Patch

Image completion is one of the subjects in image and video processing which deals with restoration of and filling in damaged regions of images using correct regions. Exemplar-based image completion methods give more pleasant results than pixel-based approaches. In this paper, a new algorithm is proposed to find the most suitable patch in order to fill in the damaged parts. This patch selection ...

متن کامل

Model-Based Image Interpretation Using Genetic Algorithms

We describe the application of genetic algorithms in model-based image interpretation. The delineation of left ventricular boundaries in apical 4-chamber echocardiograms is used as an illustrative exemplar. The suitability of genetic algorithms for the model/objective-function/search procedure is presented.

متن کامل

OPTIMIZATION OF SKELETAL STRUCTURES USING IMPROVED GENETIC ALGORITHM BASED ON PROPOSED SAMPLING SEARCH SPACE IDEA

In this article, by Partitioning of designing space, optimization speed is tried to be increased by GA. To this end, designing space search is done in two steps which are global search and local search. To achieve this goal, according to meshing in FEM, firstly, the list of sections is divided to specific subsets. Then, intermediate member of each subset, as representative of subset, is defined...

متن کامل

Introduction to the special issue on exemplar-based models in linguistics

Recent years have witnessed the emergence of a cluster of approaches in linguistic theory known as exemplar-based models. Such exemplar-based models are being developed in research domains as diverse as phonetics, phonology, morphology, historical linguistics, semantics, syntax, and language acquisition. This special issue brings together, for the first time, articles applying exemplar-based mo...

متن کامل

Rapid Attentional Selection of Non-native Stimuli despite Perceptual Narrowing

Visual experiences increase our ability to discriminate environmentally relevant stimuli (native stimuli, e.g., human faces) at the cost of a reduced sensitivity to irrelevant or infrequent stimuli (non-native stimuli, e.g., monkey/ape faces)-a developmental progression known as perceptual narrowing. One possible source of the reduced sensitivity in distinguishing non-native stimuli (e.g., one ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2004