Introduction Internet and Online Services

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Introduction- Internet and Online Services -

• Online services
• Information retrieval
• From home pages to integrated content
• Digital economy
• Reports by U.S. Department of Commerce
• Electronic commerce
• Online self-service
• Toward integration of information and knowledge

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Information Retrieval on Internet
Distributed Content
Integrated Content
Machine- understandable
Searchable Content
Advertising/ Intermediary
Semantic Structure
Registration/ Collection
Web Home Page
Machine- readable
Search Engine
Individual
Integrated
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Search Engine

• Keyword search for textual portion
• Software robots periodically collect HTML files
  from millions of URLs
• Huge indices are created and updated from the
  textual portion of collected HTML files
• Presenting hit lists for specified keywords
• Scoring with weights for individual keywords
  based on TF/IDF
• User assistance
• Directory service (Yahoo! etc.)
• Keyword recommendation

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Machine-readable Information

• Semantics is left to the human user
• Users intervention is indispensable
• There is a growing gap between the ever-expanding
  information on Internet and the constant human
  capacity
• Machine-understandable information is necessary
  for E-Commerce/CALS/EDI
• Round-trip flight ticket from Narita to San
  Francisco departing on Dec. 9 for 50,000 yen or
  less can not be specified with keywords

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Semantic Structure of Information
Semantically Unstructured
Semantically Structured
Overhead in Creation
Good
Bad
Fair
Good
Search Precision
Automated Processing (Semantic)
Bad
Good
Text
Database
Target Information Source
HTML
XML
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Searchable Content

• Search function for semantically structured
  information
• Electronic catalogs for products and services
• Timetables
• Search function for products and services from
  multiple vendors
• Corporations which already collect information
  from multiple vendors (e.g. Recruit Co., Ltd.)

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Integrated Content

• Cross-catalog Search
• Simultaneous search for catalog information on
  distributed servers
• Applications such as virtual catalog
• One-after-another search
• Integrated search for different kinds of related
  information from multiple servers
• Applications such as travel planning

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Digital Economy

• Three official reports by U.S. Department of
  Commerce
• The Emerging Digital Economy May 1998
• The Emerging Digital Economy II June 1999
• The Emerging Digital Economy 2000 June 2000

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Areas of E-Commerce
Virtual Product
The Core of E-Commerce
E-Commerce Areas
Virtual Process
Digital Product
Digital Process
Traditional Commerce
Physical Product
Physical Process
Virtual Player
Physical Agent
Digital Agent
The Economics of Electronic Commerce
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Online Self-service

• Availability check service
• Hotel, train, flight etc.
• Tracking service
• Delivery (e.g. FedEx and postal service)
• Flight status
• Order status
• Web front office
• Configuration service etc.
• Digital clerk
• Services based-on back-end mission-critical
  systems

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Toward Integration of Information and Knowledge

• Information integration along chains
• Supply-chain, value-chain, demand-chain
• Systems and services from different owners
• Information sources are disparate
• Realizing online self-service
• Multiple use of assets such as back-end
  mission-critical systems is important
• Integration of information and knowledge

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Loyalty Reward Program

• Frequent flyer program (FFP)
• Frequent stayer program (FSP)
• Frequent shopper program (FSP)