Enabling Computers to Read the Web

Can computers read the web?
AllRight: High Quality Knowledge Mining
from the Web
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Enabling Computers to Read the Web
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Canon PowerShot S400 digital camera specifications
Web
Digital ELPH
Canon PowerShot
S400
Item Code: 8392A001
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PowerShot S400
Canon PowerShot S400
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Consumer Products Home :: Camera :: Digital Cameras :: PowerShot S400
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Announced 27-Feb-03
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Format
More efficient knowledge acquisition.
Knowledge acquisition is CRITICAL for success!
With the Web, the situation changed dramatically:
The good “messages”
Knowledge is massively contained in the Web,
Knowledge is usually redundantly stored.
Type
1/1.8 inch charge coupled device (CCD)
Total Pixels
Approx. 4.1 million
Effective Pixels
Approx. 4.0 million
n der Lixto zählen unter anderem Pirelli, ZF
iteurope.com, T-Mobile, Österreich Werbung sowie
ernehmen in der Reise-, Automobil- und IT-Branche.
kte gemeinsam mit den Partnern IBM Global Services,
h.
Product Advisories:
4.0
Service Notice: CCD Image
Sensor Advisory (Updated
10/31/2006)
Focal Length
7.4 - 22.2mm (35mm film equivalent: 36 - 108mm)
Ultra Compact
Digital Zoom
3.6x
Price (street)
US$600
Focusing Range
Also known as
Canon Digital IXUS 400
Normal AF: 46cm/1.5 ft. - infinity Macro AF: 5 - 46cm (2.0 in. - 1.5 ft.) (W), and 30 - 46cm
(1.0 - 1.6 ft.) (T).
Manual focus: 10cm/4 in. - infinity (W), 30cm/1 in. - infinity (T)
Release Status
Discontinued
Autofocus System
9-point AiAF( Automatic Focus Point Selection)/ 1-point AF (Fixed to center)
Max resolution
2272 x 1704
Low resolution
1600 x 1200, 1024 x 768, 640 x 480
Viewfinders
Image ratio w:h
4:3
Optical Viewfinder
Real-image optical zoom viewfinder
Effective pixels
3.9 million
LCD Monitor
1.5 inch low-temperature polycrystalline silicon TFT color LCD
LCD Pixels
Approximately 118,000 pixels
Sensor photo detectors
4.1 million
LCD Coverage
100%
Sensor size
1/1.8 " (7.18 x 5.32 mm)
Sensor type
CCD
Aperture and Shutter
Colour filter array
RGB
Maximum Aperture
f/2.8 - 4.9
Sensor manufacturer
Unknown
Shutter Speed
15 - 1/2,000 sec.
ISO rating
Auto, 50, 100, 200, 400
Zoom wide (W)
36 mm
ISO Sensitivity
Zoom tele (T)
108 mm (3 x)
Light Metering
Digital zoom
Yes, 3.6 x
Image stabilization
No
Auto Focus
Yes
Manual Focus
No
Auto focus type
AiAF TTL 9-point
Normal focus range
46 cm
Macro focus range
5 cm
White balance override
6 positions plus manual
Aperture range
F2.8 - F4.9
Min shutter
15 sec
Max shutter
1/2000 sec
Built-in Flash
Yes
Flash guide no.
3.5 m (11.4 ft) 5 m
External flash
No
Flash modes
Auto, On, Off, Manual (Red Eye On/Off)
Exposure compensation
-2 to +2 EV in 1/3 EV steps
Metering
Evaluative, Center Weighted, Spot
hasKeyword
hasUnit
Mpx
hasKeyword
"Effective pixels"
"million"
www.usa.canon.com - Manufacturer
Exposure Control
AUTO or user set ISO 50/100/200/400 equivalent
Evaluative/Center-weighted average/Spot
AllRight System Architecture - Recommender System Sample
Internet
(search
engine)
3: URLs
2: Queries
6: Pages with
descriptions
4: Validation, recognition and
feedback
Search for
related Web sites
and pages
Recommender
system
Clustering of
descriptions,
extraction of
instances
Identification of
pages, attributes,
values
1: Keywords
The bad “message” (for computer systems)
Knowledge is usually available only in human readable form.
ein privates Unternehmen mit Sitz in Wien. Der Fokus
f innovativer Suchtechnologie im Web. Lixto hilft
en, bessere Ergebnisse für Ihre Anfragen im Web zu
ungen in den Bereichen Metasearch, Online Market
ntegration an.
hasValue
Lens
Import/Export
ftware GmbH
Resolution_Instance
Service Notice: PowerShot
S400 CF Card Error
www.dpreview.com - Reviewer
General Context of Research
Compact digital still camera with built-in flash and 3.0x Optical / 3.6x Digital / 11x
Combined Zoom
Image Capture Device
Newsletter
Links
hasAttribute
Specifications
Buying Guide
5: User ontology
7: Product descriptions
Knowledge
acquisition GUI
10: Facts
Relationships
extraction
9: Product
data
Existing
online
store
8: Instantiated
user ontology
Project Team
ConfigWorks GmbH
Dietmar Jannach
AllRight Results
focuses on online customer support
Lixto Software GmbH focuses on Web data extraction
Gerald Ledermüller
University Klagenfurt (Project Leader)
G. Friedrich, K. Shchekotykhin, [H. Koller until Nov. 05]
Vienna University of Technology
G. Gottlob, M. Herzog, W. Holzinger, B. Krüpl
The system was evaluated on two sample domains:
Digital Camera and Notebooks
Digital Camera: more than 400 camera descriptions found
(all actual camera models)
currently approx. 80% of each description was recognized correctly
Notebook:
Austrian Research Promotion Agency, Programm Line FIT-IT
Semantic Systems (Project AllRight, Contract 809261)
more than 300 models found
(modifications are considered as one model)
currently approx. 85% of each description was recognized correctly