A Superimposed Coding Scheme Based on Multiple Block Descriptor Files for Indexing Very Large Data Bases

نویسندگان

  • Alan J. Kent
  • Ron Sacks-Davis
  • Kotagiri Ramamohanarao
چکیده

A new signature file method for accessing information from large data files containing both formatted and free text data is presented. The new method, called the multiorganizational scheme is proposed for indexing very large data files containing hundreds of thousands or possibly millions of records.

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

An efficient secure channel coding scheme based on polar codes

In this paper, we propose a new framework for joint encryption encoding scheme based on polar codes, namely efficient and secure joint secret key encryption channel coding scheme. The issue of using new coding structure, i.e. polar codes in Rao-Nam (RN) like schemes is addressed. Cryptanalysis methods show that the proposed scheme has an acceptable level of security with a relatively smaller ke...

متن کامل

Indexing Fuzzy Data

Providing efficient query processing in database systems is one step in gaining acceptance of such systems by end users. We propose several techniques for indexing fuzzy sets in databases to improve the query evaluation performance. Three of the presented access methods are based on superimposed coding, while the fourth relies on inverted files. The efficiency of these techniques was evaluated ...

متن کامل

Storage Management for Files of Dynamic Records

We propose a new scheme for managing files of variable-length dynamic records, based on storing the records in large, fixed-length blocks. We demonstrate the effectiveness of this scheme for text indexing, showing that it achieves space utilisation of over 95%. With an appropriate block size and caching strategy, our scheme requires on average around two disk accesses—one read and one write—for...

متن کامل

Recognition of Visual Events using Spatio-Temporal Information of the Video Signal

Recognition of visual events as a video analysis task has become popular in machine learning community. While the traditional approaches for detection of video events have been used for a long time, the recently evolved deep learning based methods have revolutionized this area. They have enabled event recognition systems to achieve detection rates which were not reachable by traditional approac...

متن کامل

مقایسه ساختار اصطلاح نامه‌های پایگاه‌های اطلاعاتی Pubmed و Embase با استاندارد اصطلاحنامه نویسی سازمان ملی استانداردهای اطلاعاتی آمریکا و بررسی شیوه‌های نمایه سازی دو پایگاه

Introduction: According to mortality rates in Iran, cardiovascular diseases, neoplasms, perinatal mortality, and respiratory tract diseases were top rate mortality in 2003(1382). To reduce mortality rate, Iranian medical community need to know more about recent therapeutic regimens. Two main medical databases are Pubmed and Embase. Researching Pubmed and Embase indexing methods and comparing Me...

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 1988