Chapter 8 : The Mobile Web

1
Chapter 8 The Mobile Web

• Mobile computing.
• The i-mode service.
• M-commerce.
• Personalised news and learning resources.
• Mobile web broswers.
• Information seeking on mobile devices.
• Presentation of information on mobile devices.
• The navigation problem in mobile portals.
• Mobile search.

2
Mobile Computing

• Mobility supports anywhere, anytime access.
• Limitations of mobile devices pose challenging
  problems.
• Mobile users have a shorter attention span, and
  their information needs are different.
• Wireless markup language allows developers to
  deliver information to mobile devices.

3
I-mode

• Figure 8.1 I-mode menu

4
M-commerce

• Is an extension of e-commerce.
• Potential is huge, need access to services
  including email, messaging, web browsing, voice
  interface and location detection.
• Mobile portals can provide services.

5
Delivering Personalised News

• Figure 8.2 Daily Learner adaptive news agent

6
Delivery of Learning Resources

• Figure 8.3 Map in KnowledgeSea system

7
Mobile Web Browsers

• Figure 8.4 Opera browser on mobile phone

8
Mobile Web Browsers

• Figure 8.5 Pocket Internet Explorer

9
Information Seeking on Mobile Devices

• Need to reduce the following factors
• Text input (use alternative input modes).
• Amount of displayed information (present
  summaries and reduce graphics).
• Number of clicks to find information (through
  personalisation).
• Amount of information delivered to device (store
  relevant information on the device).

10
Presenting Information on a Mobile Device

• Figure 8.9 Google search on Palm devices

11
Presenting Information on a Mobile Device

• Figure 8.10 Thumbnails and detailed views

12
The Navigation Problem in Mobile Portals

• Figure 8.13 Typical navigation session

13
The Navigation Problem in Mobile Portals

• Figure 8.14 Portal menu after personalisation

14
Mobile Search

• Figure 8.15 Web search on mobile phone

15
Focused Mobile Search

• Figure 8.18 Palm Pirate search interface

16
Personalised Mobile Search

• Only a few results can be displayed on a mobile
  device (4 on pda and 2 on phone) so they must be
  relevant.
• Use machine learning to learn the users profile.
• Results can be reranked according to the users
  preferences.

17
Location-Aware Mobile Search

• Geographic properties of web pages must be
  determined.
• Geographic search must take the location into
  account web pages whose location is closer
  should be ranked higher.
• A query may be global (find a recipe) or local
  (find a restaurant).