A Comparative Study ofID 3 and Backpropagationfor English Text - to -

نویسنده

  • Thomas G. Dietterich
چکیده

The performance of the error backpropaga-tion (BP) and ID3 learning algorithms was compared on the task of mapping English text to phonemes and stresses. Under the distributed output code developed by Sejnowski and Rosenberg, it is shown that BP consistently out-performs ID3 on this task by several percentage points. Three hypotheses explaining this diierence were explored: (a) ID3 is overrtting the training data, (b) BP is able to share hidden units across several output units and hence can learn the output units better, and (c) BP captures statistical information that ID3 does not. We conclude that only hypothesis (c) is correct. By augmenting ID3 with a simple statistical learning procedure, the performance of BP can be approached but not matched. More complex statistical procedures can improve the performance of both BP and ID3 substantially. A study of the residual errors suggests that there is still substantial room for improvement in learning methods for text-to-speech mapping.

برای دانلود رایگان 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

The Comparative Effect of Antonym in-Text Glosses and Description in-Text Glosses on EFL Learners' Reading Comprehensio

The present study was carried out to investigate the comparative effect of antonym in-text glosses and description in-text glosses on a group of Iranian EFL learners' reading comprehension. To fulfill the purpose of this study, 60 female intermediate students between 18 and 19 years old were selected among a total number of 90 through their performance on a piloted PET. These 60 participants we...

متن کامل

Collaborative Output Tasks and their Effects on Learning English Comparative Adjectives

This study aimed to examine the effect of two types of collaborative output tasks on Iranian EFL learners’ comparative adjectives with two or more syllables. Thirty Iranian EFL learners participated in this study which were then divided into two experimental and one control groups; one experimental group received dictogloss task in 4-pairs and the other experimental group was given text reconst...

متن کامل

A Comparative Study of Personal and Impersonal Meta-discourse in Academic Writing

The purpose of the present study was to investigate the use of personal and impersonal metadiscourse (MD) by Persian- and English-speaking writers in academic writing. For this purpose, 80 abstracts were selected (40 written by Persian-speaking writers and 40 by English-speaking ones) and analyzed. These abstracts were selected from endocrinology and metabolism journals published during 2010 to...

متن کامل

A Comparative Study of Discourse Markers: The Case of three English Applied Linguistic Texts with their Farsi Translations

This research was an attempt to find the relationship between English discourse markers and their Farsi translations. It was conducted in order to find out whether DMs translations completely demonstrate source texts orientation and to what extent DMs translations are functionally appropriate compared to the original text? Six instruments were used. Three of them were the original English books...

متن کامل

Metadiscourse Markers in Iranian Medical Articles: A Comparative Study

Background and purpose: Metadiscourse markers (MDMs) play a significant role in academic witting. They act as a bridge between writers and readers and make a text more understandable. Therefore, this study aimed at investigating the use of MDMs in introduction, methods, results, and discussion (IMRaD) sections of English medical research articles (RAs) published in Iranian and American ISI jour...

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

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1990