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– Web 2.0 – Ubiquitous Application: Participation, Openness, and Sharing. Internet Computing Laboratory @ KUT Youn-Hee Han http://icl.kut.ac.kr. Thanks for Jaesun Han and KAIST Google SIG ( http://www.web2hub.com ). The Origin of Web 2.0. New Conference?.

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Web 2 0 ubiquitous application participation openness and sharing

– Web 2.0 – Ubiquitous Application:Participation, Openness, and Sharing

Internet Computing Laboratory @ KUT

Youn-Hee Han

http://icl.kut.ac.kr

Thanks for Jaesun Han and KAIST Google SIG (http://www.web2hub.com)


The origin of web 2 0
The Origin of Web 2.0

New Conference?

Question: What are the characteristics of

web companies surviving dot-com collapse?

(Amazon, eBay, Yahoo, Google, etc)

Web 2.0 and Web Service Computing


Web as platform
Web as Platform

Definition

“I'm talking about the emergence of what I've started to call Web 2.0, the internet as platform.... it's about the way that web sites like eBay, Amazon, and Google are becoming platforms with rich add-on developer communities”

http://www.oreillynet.com/pub/wlg/5630 Tim O'Reilly Sep. 21, 2004

Web 2.0 and Web Service Computing


Web as platform1
Web as Platform

Definition

“웹이 소프트웨어 플랫폼처럼 스스로 자생하고 생존하는 시스

템으로 진화 하고 있다.”

“데이터를 기반으로 Open API를 통해 개발자 커뮤니티를 생성

하며 가벼운 비즈니스 모델로 모든 이용자들이 혜택을 받고 있

다.”

차세대 인터넷 웹 2.0 컨퍼런스, ㈜다음커뮤니케이션 R&D 팀장, 윤석찬2006.02.15~16

Web 2.0 and Web Service Computing


Web service is a trend
Web Service is a trend

Web 2.0 and Web Service Computing


Seven principles of web 2 0
Seven Principles of Web 2.0

1. The Web as Platform

2. Harnessing Collective Intelligence

3. Data is the Next Intel Inside

4. End of the Software Release Cycle

5. Lightweight Programming Models

6. Software Above the Level of a Single Device

7. Rich User Experiences

-from Tim O’Reilly’s “What is Web 2.0?”

Web 2.0 and Web Service Computing


Web 1 0 model traditional model
Web 1.0 Model (Traditional Model)

Contents

Providers

Centralized

Information Production

Information Producer

Consume

Information Consumer

Users

Web 2.0 and Web Service Computing


Web 2 0 model
Web 2.0 Model

Providers

Contents

Web as

Platform

mashup

(web services, RSS)

tagging

Openness

Participation

Users

social

network

Sharing

Web 2.0 and Web Service Computing


Web 2 0
Web 2.0 정리

Web 2.0 and Web Service Computing


Participation
Participation

Web 2.0 and Web Service Computing


Contents production by user participation

UCC(User-Created Contents)

Contents Production by User Participation

Text

Video

Photo

Audio

Web 2.0 and Web Service Computing


Ucc services
UCC Services

Text

Photo

Audio

Video

podcasting

video storing

& sharing

photo storing

& sharing

blog & wiki

Web 2.0 and Web Service Computing


Expansion of user participation
Expansion of User Participation

User-Created Media

User-Created Software

P2P Network

 User-Generated Network

WiFi Community for free WiFi access

 User-Generated Infrastructure

Web 2.0 and Web Service Computing


Collective intelligence
Collective Intelligence

“Crowd's collective intelligence will produce better outcomes than a small group of experts (Users add value)”

 Network effects from user contributions

“The promoters of Web 2.0 venerate the amateur and distrust the professional.”

Nicholas Carr- 하바드비즈니스리뷰 전편집장

Web 2.0 and Web Service Computing


Collective intelligence google pagerank
Collective Intelligence – Google PageRank

[The Philosophy of PageRank]

PageRank relies on the uniquely democratic nature of the web by using its vast link structure as an indicator of an individual page's value. In essence, Google interprets a link from page A to page B as a vote, by page A, for page B

Web 2.0 and Web Service Computing


Collective intelligence from tagging to folksonomy
Collective Intelligence – From Tagging to Folksonomy

Traditional Classification  Hierarchical-enumerative

Web 2.0 and Web Service Computing


Collective intelligence from tagging to folksonomy1
Collective Intelligence – From Tagging to Folksonomy

Web 2.0 Classification  Tagging

Web 2.0 and Web Service Computing


Collective intelligence from tagging to folksonomy2
Collective Intelligence – From Tagging to Folksonomy

Tagging is easy!

Web 2.0 and Web Service Computing


Collective intelligence from tagging to folksonomy3
Collective Intelligence – From Tagging to Folksonomy

Tag Cloud

Web 2.0 and Web Service Computing


Collective intelligence from tagging to folksonomy4
Collective Intelligence – From Tagging to Folksonomy

Folk: 일반 대중들 + Taxonomy: 분류법

Web 2.0 and Web Service Computing


Collective intelligence from tagging to folksonomy5
Collective Intelligence – From Tagging to Folksonomy

Web 2.0 and Web Service Computing


Collective intelligence recommendation
Collective Intelligence – Recommendation

So many

Recommendations!

Web 2.0 and Web Service Computing


Collective intelligence recommendation1
Collective Intelligence – Recommendation

  • Pandora (www.pandora.com)

    • Created by the Music Genome Project

      • The most comprehensive analysis of music

      • Over the past 6 years, the songs of over 10,000 different artists are analyzed the musical qualities of each song one attribute at a time.

    • Musical Genome (Hundreds of musical attributes)

      • melody, harmony, rhythm, instrumentation, orchestration, arrangement, lyrics, singing and vocal harmony, etc

Web 2.0 and Web Service Computing


Collective intelligence recommendation2
Collective Intelligence – Recommendation

Collaborative Filtering

4) Request

Recommendations

1) Submit Ratings

6) Select Items &

Recommend them

C.F. Engine

5) Identify

Neighbors

2) Store Ratings

3) Compute

Correlations

Ratings

Correlations

Web 2.0 and Web Service Computing


Collective intelligence recommendation3
Collective Intelligence – Recommendation

Collaborative Filtering

User-Item Matrix

Meg & David: similarity -0.59

Meg & Amy: similarity 0.67

Meg & Joe: similarity 0.47

Recommendations for Meg:

Movies 7

Web 2.0 and Web Service Computing


Personalization

Personalized News

Personalization

Personalized Search

Personalized Homepage

Web 2.0 and Web Service Computing


Personalization1
Personalization

Web 2.0 and Web Service Computing


The long tail
The Long Tail

http://www.wired.com/wired/archive/12.10/tail.html?pg=3

Web 2.0 and Web Service Computing


The long tail1
The Long Tail

  • The Long Tail

    • Coined by Chris Anderson

    • Infrequent events (the long tail) can cumulatively outweigh the initial portion of the graph, such that in aggregate they comprise the majority

    • Overcoming space-time limitation of offline market

  • Long Tail in Online Ads Market

Web 2.0 : Google AdSense

Web 1.0 : DoubleClick

Web 2.0 and Web Service Computing


Wikipedia
Wikipedia

Web 2.0 and Web Service Computing


Wikipedia1
Wikipedia

  • [Wikipedia의 기본 방침]

  • 편견을 배제한다.: 중립적인 관점에서 내용 작성

  • 저작권을 침해하지 않는다.: 저작권이 보호되는 자료는 올려지지 않는다.

  • 백과사전 이외의 목적은 없다.

  • 다른 회원에게 경의를 표한다.

    • : Wikipetiket

Wikipedia

An article

작성

추가

추가 및 수정

수정

Radical Trust (진보적 성선설)에 입각한 Collective Intelligence의 전형적인 결과물

Web 2.0 and Web Service Computing


Openness
Openness

Web 2.0 and Web Service Computing


Web service computing definition
Web-Service Computing - Definition

  • Web Service Computing

    • 웹을 구성하는 표준 프로토콜인 HTTP/TCP(UDP)/IP 를 기반으로

    • 구조화된 데이터 (Structured Data) 전달이 가능한 XML을 활용하여

    • 네트워크로 접근 가능한 연산, 어플리케이션, 서비스 컴포넌트들을 활용하는 Distributed Computing 기술

Web ServiceComputing(A web-based distributedcomputing for ‘service’ sharing)

Traditional Client/Server Model

Browser-based Simple Access

Distributed Computing (CORBA, JAVA RMI, DCOM)

Application-based Interaction (XML)

Agent-based + Semantic-Web

Selling “Service” on the net

Service-based Computing

Web-based Computing

Web 2.0 and Web Service Computing


Features

XML

XML

Features

  • Web Service Computing 의 특징 (1/3)

    • Use standardized Internet protocols

      • 표준화된 웹 기반 인터넷 프로토콜(HTTP, TCP/IP)을 통하여 구현

    • XML-based

      • XML을 통하여 모든 Communication 이 이루어짐

Vendor, Platform, Language에 독립적

Web 2.0 and Web Service Computing


Features1
Features

  • Web Service Computing 의 특징 (2/3)

    • Component-based

      • 하나의 웹 서비스는 대규모 웹 서비스의 일부 기능을 담당

개발이 용이하고 시간을 단축시킴

Web 2.0 and Web Service Computing


Features2
Features

  • Web Service Computing 의 특징 (3/3)

    • Interact through abstracted Interfaces (service description)

      • 추상화된 인터페이스 (Interface)를 통해서 웹 서비스의 기능이 보여짐

      • 약속된 계약사항만 준수하면 모든 동작이 수행됨

Provider의 비즈니스 로직(Logic) 변경 용이

Web 2.0 and Web Service Computing


Open api
Open API

  • Open API

    • 원래는 운영체제나 언어가 제공하는 기능을 제어할 수 있는 인터페이스를 API라 지칭

    • 이것을 외부에서 사용할 수 있도록 공개한 것이 Open API며, 웹 서비스의 개방지향적인 성격을 잘 나타내고 있음.

    • 일반적으로 웹 서비스 API등의 용어와 혼용하여 사용.

  • Google commences it for any users!

Web 2.0 and Web Service Computing


Soap example by using google open api
SOAP Example by using Google Open API

  • SOAP Example with Google

package com.google.soap.search;

public class GoogleGo {

public static void main(String args[]) throws Exception {

GoogleSearchService_Impl webservice = new GoogleSearchService_Impl();

GoogleSearchPort searchPort = (GoogleSearchPort) webservice.getGoogleSearchPort();

GoogleSearchResult r = searchPort.doGoogleSearch(

"Gkk9/zVQFHIPOjMt5LtYCAn9UDZzBZWN", //java.lang.String key

args[0], //java.lang.String query_word

1, 10, //int start, int maxResults

false, null,//boolean filter, java.lang.String restrict

false, //boolean safeSearch

null, //java.lang.String lr

"UTF-8", //java.lang.String ie

"UTF-8" //java.lang.String oe

);

ResultElement[] re = r.getResultElements();

for (int i = 0 ; i < re.length ; i++) {

System.out.println("---");

System.out.println(re[i].getTitle());

System.out.println(re[i].getURL());

System.out.println(re[i].getSnippet());

}

}

}

Web 2.0 and Web Service Computing


Open api1
Open API

  • Amazon activates it!

Web 2.0 and Web Service Computing


Open api2
Open API

  • Amazon makes money by Open API

Web 2.0 and Web Service Computing


Open api3
Open API

  • Naver starts to serve it!

Web 2.0 and Web Service Computing


Open api4
Open API

  • Daum make it active!

Web 2.0 and Web Service Computing


REST

  • REST (Representational State Transfer )

  • REST란 대규모 네트워크 시스템을 위한 아키텍처

  • 2000년 Roy Fielding의 박사 학위 논문에서 처음 제안.

    • Architectural Styles and the Design of Network-based Software Architectures (DOCTOR OF PHILOSOPHY)

http://www.ics.uci.edu/~fielding/pubs/dissertation/top.htm

  • REST의 원래 뜻

    • 웹과 같은 대규모 네트워크 시스템을 위한 원칙들의 모음

  • 요즘 추가된 뜻

    • XML과 HTTP를 사용하는 단순한 웹 기반 인터페이스를 지칭

    • 즉, REST의 원칙을 따르는 Web Services를 통칭하게 됨)

Web 2.0 and Web Service Computing


REST

  • REST (Representational State Transfer )

    • SOAP, XML-RPC보다 간단

    • OPEN-API 구현에 많이 사용

    • Naver의 OPEN API들도 REST 방식이라고 할 수 있다.

  • 많은 웹2.0 회사들이 Open API의 구현 방법으로 많이 사용.

  • 구글, 플리커, 아마존 등의 Open API가 REST 방식으로 구현되어 공개

  • 서비스의 서버 플랫폼 구축에 있어 필수적인 아키텍쳐

  • REST는 실제 표준은 아니지만 HTTP/URL/MIME Type같은 웹 표준을 사용.

Web 2.0 and Web Service Computing


Rest vs soap
REST vs. SOAP

REST (XML over HTTP) 85%

SOAP 15%

- 아마존이 제공한 두 가지 인터페이스의 점유율

Web 2.0 and Web Service Computing


Rest vs soap1
REST vs. SOAP

  • - 구글의 SOAP 기반 검색 API가 2006년 12월 5일에 중단

  • - 대신 구글은 REST 기반의 Ajax Search API를 대안으로 제시

Web 2.0 and Web Service Computing


REST방식의 호출

요청

http://wisefree.com/employee

응답

<?xml version="1.0"?><p:Employee  xmlns:p="http://wisefree.com" xmlns:xlink="http://www.w3.org/1999/xlink"><Employee id="603045"  xlink:href="http://wisefree.com/employee/603045"/><Employee id="741146" xlink:href="http://wisefree.com/employee/741146"/></p:Employee>

Web 2.0 and Web Service Computing


REST방식의 호출

요청

http://wisefree.com/employee/603045

응답

<?xml version="1.0"?><p:Employee xmlns:p="http://wisefree.com" xmlns:xlink="http://www.w3.org/1999/xlink"><Employee-ID>741146</Employee-ID><Name>jisu park</Name><Resume xlink:href="http://wisefree.com/employee/741146/resume/"/></p:Employee>

Web 2.0 and Web Service Computing


REST방식의 호출

"서버 주소 + 서비스 이름 + 자원"

X

http://wisefree.com/employee/getEmployee?id=603045

O

http://wisefree.com/employee/603045

Web 2.0 and Web Service Computing


Example daum api rest
Example) Daum 오픈 API의 REST

Web 2.0 and Web Service Computing


Example daum api rest1
Example) Daum 오픈 API의 REST

Web 2.0 and Web Service Computing


Example daum api rest2
Example) Daum 오픈 API의 REST

Web 2.0 and Web Service Computing


Daum api rest
Daum 오픈 API의 REST

<?php

error_reporting(E_ALL);$request = 'http://apis.daum.net/search/blog?apikey=[사용자 인증키]&q='.urlencode('다음');$response = file_get_contents($request);if ($response === false) {    die('Request failed');}$phpobject = simplexml_load_string($response);if ($phpobject === false) {    die('Parsing failed');}// Output the data// SimpleXML returns the data as a SimpleXML object$channel = $phpobject->channel;echo "<h1>".$channel->title."</h1><br />";echo "<h2>검색결과: ".$channel->totalCount."</h2><br />";foreach($channel->item as $value) {    echo "제목: ".$value->title."<br />";        echo "내용: ".$value->description."<br />";    echo "<hr />";}

?>

PHP를 이용한 샘플코드

Web 2.0 and Web Service Computing


Openness mashup
Openness & Mashup

  • Mashup

    • Website or web application that seamlessly combines content from more than one source into an integrated experience

  • Examples

    • Google News : News aggregation

    • Newsmap : News visualization (Using Google News)

    • WingBus : Travel info service (Aggregating blog posts on traveling)

    • Housingmaps.com = Google Maps + Craigslist

    • Amazon Light = Amazon + Other Searches + Yahoo News + …

    • Chicago Crime Map = Google Maps + CPD's Citizen ICAM Web site

    • Aladdin TTB Review = Aladdin + Blog APIs

Web 2.0 and Web Service Computing


Openness mashup1
Openness & Mashup

  • Housingmaps.com

Web 2.0 and Web Service Computing


Openness mashup2
Openness & Mashup

  • xwire.co.kr

Web 2.0 and Web Service Computing


Openness mashup3
Openness & Mashup

  • 스프링노트 + MSN 메신저

Web 2.0 and Web Service Computing


Web as platform2
Web as Platform

Web 2.0 and Web Service Computing


Case study ebay business platform
Case Study: eBay Business Platform

Business and Solution Partner

  • 45% of auction items are exposed to partner sites through API

  • 2 billion API requests every month

  • 30,000 registered external developers who make services and tools for eBay

  • the number of customers using these services and tools increase at the rate

  • of 45% every year

Auction &

Open Market

Electronic Payment

eBay Business Platform

Shopping mall

Construction

VoIP

Online comparison shopping

Web 2.0 and Web Service Computing


Web as platform enabling technologies

Server Tech.

JSP, ASP, LAMP

Ruby, Ruby on Rails,

Web Frameworks, …

Client Tech. (RIA)

Ajax, Flash&Flex, XAML,

XUL, SVG, Widgets …

Contents Tech.

Blog, Wiki, RSS, Tagging,

Podcasting, Mashup …

Web as Platform : enabling technologies

  • How can Web evolve into platform?

     Web technologies become mature!

Global Platform Tech.

Development, Deployment,

Operation, Management …

Web 2.0 and Web Service Computing


Client technologies
Client Technologies

  • Web Browsers : Client program of Web Platform

    • Limitations: restricted interactivity and user interface

  • RIA (Rich Internet Application) technologies

    • Ajax (Asynchronous Javascript and XML)

    • Macromedia Flash & Flex

    • SVG (Scalable Vector Graphics)

    • Laszlo

    • XAML on Windows Vista

    • XUL Application for Firefox

    • Yahoo! Widget (aka. Konfabulator)

    • Apple Dashboard

Web 2.0 and Web Service Computing


Server technologies
Server Technologies

  • Importance of server technologies

    • Network computing era

    • Rapid development and Low operating cost of services

  • Agile Web Development

    • Script languages for web development

      • JSP, PHP, Python, Ruby

    • Web frameworks

      • J2EE with JSP/Servlet, POJO, Ruby on Rails(RoR), Struts, PEAR

      • Ajax frameworks (Dojo, Prototype, DWR, Atlas, Google Web Toolkit(GWT))

Web 2.0 and Web Service Computing


Web 2.0

Big

Picture

Web 2.0 and Web Service Computing


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