1 language-based information and knowledge analysis professor khurshid ahmad department of computing...
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Language-based Information and Knowledge
Analysis
Professor Khurshid AhmadDepartment of ComputingSchool of Electronics and Physical
Sciences
University of Surrey e-Science day at the Surrey Research Park, 2 December 2002
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Talk Outline
Computing Intelligently The complexity of science The triumvirate of understanding Dealing with information deluge The Missing Link: Images and Text Need for/of the Grid Afterword
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Talk Outline
Computing Intelligently The complexity of science The triumvirate of understanding Dealing with information deluge The Missing Link: Images and Text Need for/of the Grid Afterword
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Computing Intelligently?
Knowledge
Intelligence Cognition
Language; Images Symbols; Planning; Learning, Thinking;
Creativity
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Computing Intelligently?
Knowledge
Intelligence Cognition
Language; Images Symbols; Planning; Learning, Thinking;
Creativity
Artificially intelligent computing systems attempt to solve problems based on an interpretation of work in psychology, neurobiology, linguistics, mathematics and philosophy.
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Knowledge-based
INFORMATION EXTRACTION
Cognition based INFORMATION VISUALIZATION
Intelligence based on SCIENTOMETRICS/ BIBLIOMETRICS
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Intelligent: INFORMATION RETRIEVAL
The triumvirate of understanding
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Knowledge-based INFORMATION EXTRACTION
Cognition based INFORMATION VISUALIZATION
Intelligence based on SCIENTOMETRICS/ BIBLIOMETRICS
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Intelligent: INFORMATION
RETRIEVAL
The triumvirate of understanding
Major text data bases are online:
MEDLINE (11 million papers);
Physical Review Online Archive (c. 1890 to date);
US Patent Office (all patents from 1900 onwards);
Genome Data bases
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Knowledge-based INFORMATION EXTRACTION
Cognition based INFORMATION VISUALIZATION
Intelligence based on SCIENTOMETRICS/ BIBLIOMETRICS
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Intelligent: INFORMATION
RETRIEVAL
The triumvirate of understanding
Major text and image data bases are online:
Reuters News (c. 3000 stories per day);
Spectroscopy and analytical data (NIS data bases);
Chemical Abstracts, where currently structure diagrams are ignored;
Crime-related images with annotated information
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Knowledge-based INFORMATION EXTRACTION
Cognition based INFORMATION VISUALIZATION
Intelligence based on SCIENTOMETRICS/ BIBLIOMETRICS
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Intelligent: INFORMATION
RETRIEVAL
The triumvirate of understanding
Major text and image data bases are online:
Recently, studies of how science and technology evolves have been related to issues of business management particularly the emergence of competition, disruptive technologies, and opportunities for collaboration across disciplines.
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Knowledge-based INFORMATION EXTRACTION
Cognition based INFORMATION VISUALIZATION
Intelligence based on SCIENTOMETRICS/ BIBLIOMETRICS
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Intelligent: INFORMATION
RETRIEVAL
The triumvirate of understanding
Major text and image data bases are online:
Such methods are used essentially with structured spatial and temporal data
Abstract non-spatial and atemporal data, for example, free text as found in journal papers, in
various abstracts data bases (cf MEDLINE), in electronic mail comprising user-to-expert
communication, or in web-access patterns, are typically visualised using the so-called thematic
landscapes. This would need the GRID.
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Knowledge-based INFORMATION EXTRACTION
Cognition based INFORMATION VISUALIZATION
Intelligence based on SCIENTOMETRICS/ BIBLIOMETRICS
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Intelligent: INFORMATION
RETRIEVAL
The triumvirate of understanding
Major text and image data bases are online:
Reuters News (c. 3000 stories per day);
Spectroscopy and analytical data (NIS data bases);
Chemical Abstracts, where currently structure diagrams are ignored;
Crime-related images with annotated information
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The triumvirate of understanding: Need for/of the Grid
Coordinating data sets based on common sets of metadata: need for standards beyond those for architecture of the Grid (OGSA)
Grid-enabling text analysis systems would enable processing of large volumes of distributed data
Grids provide the infrastructure for development of generic computing applications capable of dealing with and combining results of analysis of various types of data – language, images, graphs.
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Computing Intelligently?
A knowledge-based system can be programmed to reason over a set of facts, propositions, rules and rules of thumb and, sometimes, the system may come to the same conclusion as a human being.
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Computing Intelligently – with rules of thumb about
images?
Recognising and reasoning about the visual environment something that people do extraordinarily well;
In these abilities an average three year old makes the most sophisticated computer vision system look embarrassingly inept
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Computing Intelligently – with rules of thumb about
images?
The Vision Problem?
Three-dimensional physical structure in the scene, containing pictures of objects
related to other (probably) known objects, which projects into two
dimensional structure in the image.
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Computing Intelligently – with rules of thumb about words?
Natural Language. A person’s native tongue; organic, ambiguous, creative, wilful
Natural Language Processing. Processing of natural language (e.g., English) by a computer to facilitate communication with the computer or for other purposes, such as word processors, computer-based dictionaries and thesauri, summarizers, machine translators, text filters, grammar checkers……….
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Talk Outline
Computing Intelligently The complexity of science The triumvirate of understanding Dealing with information deluge The Missing Link: Images and Text Need for/of the Grid Afterword
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Complexity of science
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'30 '40 '45 '50 '60 '65 '70 '80 '90
Nature
Science
ScientificAmerican
LEX
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IFFIC
ULTY
YEAR OF PUBLICATION (BETWEEN 1930 & 1990)
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Complexity of science
Lexical processes used by scientists involve:
repetition of lexical items comprising the specific vocabulary of a subject domain
inventing new words borrowing words from other domains re-defining words or terms
Such processes contribute significantly to the organisation and communication of tacit and explicit knowledge.
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Complexity of scienceWe have developed a computer-based method that compares the relative occurrence of single words in a English-scientific paper (or a collection or corpus of papers) with the occurrence of the words in a representative sample of contemporary English language.
The British National Corpus is a 100 million digital collection of written (and spoken) English written/spoken during 1975-1993. Three-quarters of the text is drawn from (A-level+) natural, social, applied sciences, from arts and culture, commerce and finance. The other quarter includes works of fiction and popular science.
BNC type corpora are used extensively in producing dictionaries for general use.
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Complexity of science Leo Esaki discovered a new semi-conductor device, the
tunnel diodes in 1957. The super-fast, current-switching device earned Esaki a
Nobel Prize, and yet technological obstacles hindered widespread use in conventional, silicon-based circuits.
Recent developments in tunnel diodes could help chip-makers boost silicon's speed while further shrinking chips.
• We have developed a text corpus, comprising 100-odd journal papers, published between 1980-2000, containing over 430,000 words, on the topic of tunnel diodes or more precisely on resonant tunnel diodes.
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Complexity of science A lexico-morphological signature of discovery?
Weird/excessive use of tunnel:Frequency relative to BNC
Surrey Corpus
(a)
British National Corpus
(b)
tunnel 50 1
tunnels 3 2
tunnelled 70 1
tunnelling 685 1
Magnetotunneling does not exist in the British National Corpus
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Complexity of science A lexico-morphological signature of the discovery of tunnel diodes?
Lexical ‘productivity’ of tunnel & resonant: Frequently used compound words
resonant tunneling 172resonant tunneling diodes 25resonant tunneling diode 19resonant magnetotunneling 16resonant tunneling structures 8resonant tunneling peak 8
barrier resonant tunneling structure 6resonant tunneling structure 6resonant tunneling spectroscopy 6resonant tunneling processes 4resonant tunneling system 4
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unipolar resonant tunneling diode
bipolar light-emitting resonant tunneling diode
resonant interband tunneling diode - RITD
interband resonant tunneling diode
delta doped resonant tunneling diode
quantum well resonant tunneling diode
resonant tunneling diode
double-barrier resonant tunneling diode
interband double barrier tunneling diode
tunneling diode
Same thing?
Complexity of scienceLexicomorphological signature: Compound Words
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Complexity of science
Semiconductor Devices(5)
Tunnel Devices(1)
Tunnel Diode Leo Esaki
1980
Semiconductor Devices(2)
Heterojunction Devices(2)
Tunnel Devices (3)
Memory Devices(9)
L. L. Chang, L. Esaki, W. E. Howard, R. Ludekeand N. Schul, MBE in GaAs and AlAsJournal, J. Vac. Sci. Technol. 10, 655(1973)
H. Sakaki, L. L. Chang, R. Ludeke, C. A.Chang, G. A. Sai-Halasz and L. Esaki;Molecular Beam Epitaxy, Appl. Phys.Lett. 31, 211 (1977)
C. A. Chang, R. Ludeke, L. Chang, and L.Esaki, MBE of InGaAs and GaSbAs, Appl.Phys. Lett. 31, 759 (1977).
Information from journals is passed into patents.
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Complexity of scienceVisualising fashions in science and technology: The movement of iconic terms.
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Talk Outline
Computing Intelligently The complexity of science The triumvirate of understanding Dealing with information deluge The Missing Link: Images and Text Need for/of the Grid Afterword
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The triumvirate of understanding
Knowledge
Intelligence Cognition
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The triumvirate of understanding with apologies to Plato
Knowledge about, knowledge by description: knowledge of a person, thing, or perception gained through information or facts about it rather than by direct experience.
An impersonation of intelligence; an intelligent or rational being; esp. applied to one that is or may be incorporeal; a spirit
COGNITION: The action or faculty of knowing taken in its widest sense, including sensation, perception, conception, etc., as distinguished from feeling and volition.
Language; Images Symbols; Planning; Learning, Thinking;
Creativity
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The triumvirate of understanding
with apologies to AristotleKnowledge of a person, thing, or other entity (e.g. sense-datum, universal) by direct experience of it, as opposed to knowing facts about it. So knowledge of, by, acquaintance
INTELLIGENCE: Knowledge as to events, communicated by or obtained from another; information, news, tidings.
COGNITION: A product of such an action: a sensation, perception, notion, or higher intuition
Language; Images Symbols; Planning; Learning, Thinking;
Creativity
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Knowledge-based
INFORMATION EXTRACTION
Cognition based INFORMATION VISUALIZATION
Intelligence based on SCIENTOMETRICS/ BIBLIOMETRICS
I R
Intelligent: INFORMATION RETRIEVAL
The triumvirate of understanding
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Talk Outline
Computing Intelligently The complexity of science The triumvirate of understanding Dealing with information deluge The Missing Link: Images and Text Need for/of the Grid Afterword
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Dealing with information deluge•There are over 2,000 news wires produced by Reuters Financial together with on-line reports from banks, brokerage houses, regulatory bodies. Filtering the relevant from the not-so-relevant is a major problem.
•All major journals in science and technology, together with pre-prints, textbooks, conference proceedings, technical reports, research road-maps, (US) patent documents, are all available (almost) freely. Extracting relevant document from this intellectual deluge is challenging the limits of documentation and has a serious impact on innovation and technology transfer.
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Dealing with information deluge
•The news report is one of the most commonly occurring linguistic expressions.
•Despite being a good example of open-world data, a news report is a contrived artefact:
• each report has a potentially attention grabbing headline;
• the opening few sentences generally comprise a good summary of the contents of the report;
• there are slots for the date of origin and slots for photographs and other graphic material.
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Dealing with information deluge
Event News Market (Price)
Information
The relationship between Events, News and Markets
(price) through Information.
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Dealing with information deluge
Movement from Feb 2001 to Jan 2002. Note the dip on and around Sep 11th 2001, although all markets were falling before this.
Sep 11, 2001
Germany DAX(PERF) Nasdaq Composite Index
Japan NIKKEI AVERAGE INDEX(225) Dow Jones Industrial Average
Sep 11, 2001
Sep 11, 2001
Sep 11, 2001
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Dealing with information deluge
•Francis Knowles has written about the use of health metaphors used in the financial news reports:
•markets are full of vigour and are strong or the markets are anaemic or are weak (1996);
•most newspapers also use animal metaphors – there are bull markets and bear markets, the former refer to expansion, and indirectly to fertility, and the latter to shy, retiring and grizzly behaviour much like that reported about bears in popular press and in literature for children.
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Dealing with information deluge
Mainly Good News Stories Rather Bad News Stories
Naval shipbuilder and military contractor Vosper Thornycroft has boosted its civil arm by buying facilities manager Merlin Communications (Nov 14, 2001)
Heavyweight banking and oil stocks have dropped up the leading share index as investors bet on fresh interest rate cuts.’ (Nov 21, 2001).
The FTSE 100 stock index looks set to open stronger today after Wall Street added to gains seen at the London close and with U.S. stock index futures boosted by rumours that Osama bin Laden had been captured.’(Nov 15, 2001).
The European Commission has slashed its official growth forecasts for the euro zone [..], predicting the most serious slowdown since the 1990s recession, with lower growth in 2002 than this year.’ (Nov 21, 2001).
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Dealing with information deluge
We created a corpus of 1,539 English financial texts from one source (Reuters) on the World Wide Web, published during a 3 month period (Oct 2001-January 2002) comprising over 310,000 tokens. The corpus comprised a blend of both short news stories and financial reports. Most of the news is business news from Britain with thirty percent of the news is from Europe and from the United States. Week (5 day week) Good Word
FrequencyBad Word Frequency
1 58 40
2 71 75
3 77 66
4 73 59
5 72 28
Total 351 268
Frequency of Good and Bad words in Nov 2001. The underlined figures in the 2nd and 3rd columns indicate the minimum value of the frequency and the numbers in italics are the maximum value.
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Dealing with information deluge
Market correlation between ‘good’ word frequency and FTSE index.
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Good words FTSE100
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Dealing with information deluge
Good and bad word frequency correlated with FTSE 100.
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Dealing with information deluge
SYSTEM QUIRK
Reuters News Feed
Up
Down
Time Series of Up and Down
FTSE 100INDEX
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Good w ords FTSE100
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Good w ords FTSE100
Generate Signal (Buy / Sell)
Ibermatica, Madrid
Finsoft, London
JRC GmBH, Berlin
Partners
This work is being carried out under the auspices of the EU-IST sponsored GIDA project. The project aims to create a novel service type in the financial investment business. Its novelty lies in the integration of financial analysis with news analysis
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Dealing with information deluge
FTSE 100 plotted against ‘bad news’ 20 February 2002 one of the lowest days.The SATISFI system keeps track of news reports with bad (and good) news.
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Dealing with information deluge
• SATISFI Sentiment and Time Series: Financial analysis System is being developed at the University of Surrey for the EU-IST GIDA Project.
Good News
FTSE 100
SATISFI is based on our existing text analysis system, System Quirk, together with programs for time series analysis, text summarisation and organising large text collections, and programs for creating thesauri and term bases. Systems for learning the behaviour of the markets are also being developed.
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Profiting from information deluge?
See also: http://www.vicefund.com/
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Dealing with information deluge
We have used a neural computing system that creates its own categories given a class of computational objects, say digitised, computer-understandable version of a set of news stories – a set of keywords representing the whole set. Some keywords will be present in some stories or absent from the stories.
The system has to be trained on a set of keywords and creates categories.
Then the system will categorise unseen stories into the categories it has already created.
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Dealing with information deluge
Our text corpus consisted of 100 Associated Press (AP) news wires selected from 10 pre-classified news categories shown together with their icons. The average length of the articles was 622 words.
Automatic Categorization of Texts Based on Keywords Using a
neural computing system
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Dealing with information deluge
Text Categories
1 Bioconversion 6Exportation of Industry
2Pollution Recovery
7 Foreign Trade
3Alternative Fuels
8Int. Drug Enforcement
4 Fossil Fuels 9Foreign Car Makers
5 Rain Forests 10Worldwide Tax Sources
Text categories used in the TIPSTER – SUMMARY program, but were not known to our system
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Dealing with information deluge
1 percent 15 mexico 29 mazda 43 enforcement
2 tax 16 emissions 30 gases 44 warming
3 billion 17 drugs 31 shale 45 smog
4 drug 18 fuels 32 deficit 46 ozone
5 reagan 19 senate 33 export 47 massachusetts
6 cars 20 auto 34 recycling 48 imports
7 taxes 21 proposal 35 epa 49 automobile
8 environmental 22 gasoline 36 honda 50 trafficking
9 pollution 23 exports 37 methanol
10 fuel 24 vehicles 38 automakers
11 federal 25 ohio 39 panama
12 dukakis 26 greenhouse 40 corp
13 bush 27 dioxide 41 forests
14 congress 28 marine 42 cocaine
Salient single words identified automatically by System Quirk
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Dealing with information deluge
Results of a Full Text Map trained using exponentially decreased neighbourhood and learning rate.
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Dealing with information deluge
Results of a Full Text Map trained using exponentially decreased neighbourhood and learning rate.
Evaluation of summary accuracy of 30 texts by 4 defence intelligence assessors
30 full text documents and corresponding summaries given to 4assessors to decide whether the summary was acceptable. Resultsper participant below.
Participant YES NO “Yes” %British Telecom 85 34 71
Univ. of Surrey 72 48 60IBM 71 49 59SRA 67 52 56
Centre for InfoRes (Russia) 61 59 51New Mexico SU 54 66 45
Univ. of Pennsylvania 51 69 42National Taiwan Univ. 50 70 42
CGI/Carnegie-Mellon Uni. 39 80 32Lexis-Nexis 35 85 29
GE 31 88 26Cornell/SabIR 25 95 14
Intelligent Algorithms 23 96 14USCalifornia-ISI 14 106 11
Total 678 997 40
Dealing with information deluge
TEXT SUMMARISATION: Surrey’s Program Telepattern
THE PROGRAMS WERE EVALUATED by the US DoD’s TREC AND TIPSTER Programmes
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Talk Outline
Computing Intelligently The complexity of science The triumvirate of understanding Dealing with information deluge The Missing Link: Images and Text Need for/of the Grid Afterword
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The Missing Link: Images and TextThe administration of justice requires systematic prosecution of the perpetrators of crime. One key element in this system is the collection, analysis and dissemination of information collected safely and securely from the scene where the crime was committed. The information comprises images of the scene, the descriptions and interpretations of these images. In a murder case there maybe over 2000 scene of crime images and the case can take upto two years to come to courts. It is important for these images to be indexed appropriately and be retrieved efficiently.
Scene-of-crime officers (SoCOs) play a key role in the collection of this vital multi-modal information; they describe the image and the context in which the images were collected. The police officers involved in the administration of justice provide the interpretation.
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The Missing Link: Images and Text
The collateral texts – written texts or speech (fragments) closely or loosely related to an image or objects within the image.
CLOSELY CLOSELY COLLATERAL TEXTSCOLLATERAL TEXTS
CAPTION
CRIME SCENE
REPORT
BROADLY BROADLY COLLATERAL TEXTSCOLLATERAL TEXTS
NEWSPAPER ARTICLE
DICTIONARY DEFINITION
The collateral texts are special language texts and comprise keywords that may help in indexing and retrieving the images.
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The Missing Link: Images and Text
The EPSRC-sponsored SoCIS project, involving Universities of Surrey and Sheffield, is developing methods and techniques for automatically indexing images with the descriptions provided by Scene of Crime Officers.
9 mm browning high power
pistol
Footwear impression
in blood
Body on floor showing
adjacent table
Fingerprints showingridges
Typical Scene of Crime Images
The SoCIS project is investigating how the results of the project can be generalised such that the methods and techniques can be applied to an arbitrary domain.
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The Missing Link: Images and Text
What SOCO’s do now? Forms, forms and more forms
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The Missing Link: Images and TextThe SoCIS project is developing methods and techniques for automatically indexing images taken at a crime scene with the descriptions provided by scene of crime officers. Five UK Police Forces are working closely with our project: They provide knowledge of their subject domain, test our system and advise us generally.
Hampshire Constabulary
Metropolitan Police
Surrey Police
South Yorkshire Police
Kent Constabulary
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The Missing Link: Images and TextThe SoCIS project is developing methods and techniques for automatically indexing images with the descriptions provided by scene of crime officers.
Edit ButtonShape Buttons
Save Button
Select Button
Delete Button
Show All Hotspots Button
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DESCRIBING IMAGES – THE LINK BETWEEN IMAGES AND TEXT, THE
MISSING LINK?
SOCIS: A prototype image and text storage and retrieval system. Automatic Labelling (or INDEXING) of images by keywords in the
descriptions provided by the SOCO’s. Automatic Extraction of terms and their relationship to other terms
(ontology) from the descriptions and other texts.EVIDENCE
TRACE EVIDENCE
FIBREBLOOD DNA
INORGANIC FIBRE
MANUFACTURED POLYMERIC FIBRE
DYE FIBRE
The above hierarchy tree is based on our 0.7 million word forensic science text corpus
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DESCRIBING IMAGES – THE LINK BETWEEN IMAGES AND TEXT, THE
MISSING LINK?
SANNC: A neural computing system that learns how to relate textual descriptions with images.
Automatic Clustering of similar images in an image collection. Automatic Identification of the position of objects in an image or
image.
Nine millimetre browning high power self-loaded pistol
Nine millimetre browning high power self-loaded pistol
SELF ORGANISING MAP
HEBBIAN NETWORK
IMAGE
TEXT
SELF ORGANISING MAP
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DESCRIBING IMAGES – THE LINK BETWEEN IMAGES AND TEXT, THE
MISSING LINK?
IDENTIFICATION LOCATION ELABORATION
[1] Close up view of exhibit ABC/3 [.]
[2] Red and silver knife handle.
On alleyway floor
Adjacent to building and metal gate
[SOCO 1 – spontaneous free text:] Close up view of exhibit ABC/3 red and silver knife handle on alleyway floor adjacent to building and metal gate.
Indexer Variability: Given the image descriptions are in free text, perhaps each SOCO gives a different description of the image?
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DESCRIBING IMAGES – THE LINK BETWEEN IMAGES AND TEXT, THE
MISSING LINK?
SOCO 5 Close up item 3.
SOCO 7 Close up of item 3 -
SOCO 1 Close up of knife.
SOCO 8 Close up view item 3 -
SOCO 2 Close up view of ex 3
SOCO 4 Close up view of exhibit 3
SOCO 3 Close up view of exhibit ABC/3
SOCO 6 Close view of marker 3
Indexer Variability: Given the image descriptions are in free text, perhaps each SOCO gives a different description of the image?
Not really: there are three ‘structures’ – identification, location and elaboration. The linguistic description shows little or no variation. Research continues.
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Variation amongst SOCO’s?
SOCO 2 a red handled lock knife
SOCO 6 against red handled knife.
SOCO 5 Knife handle.
SOCO 3 red and silver knife handle
SOCO 4 red handled flick knife
SOCO 8 red handled flick knife.
SOCO 7 red penknife.
SOCO 1 Red sides. Metal ends.
Indexer Variability: Given the image descriptions are in free text, perhaps each SOCO gives a different description of the image?
Not really: there are three ‘structures’ – identification, location and elaboration. The linguistic description shows little or no variation. Research continues.
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Talk Outline
Computing Intelligently The complexity of science The triumvirate of understanding Dealing with information deluge The Missing Link: Images and Text Need for/of the Grid Afterword
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Need for/of the Grid
Data Grids Management of large volumes of text, images,
financial data, …. Computational Grids
Processing of large volumes of such data Collaborative Grids
Activities in research – virtual crime investigation
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Need for/of the Grid
Coordinating data sets based on common sets of metadata: need for standards beyond those for architecture of the Grid (OGSA)
Grid-enabling System Quirk would enable processing of large volumes of distributed data
Grids provide the infrastructure for development of generic computing applications capable of dealing with and combining results of analysis of various types of data
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Talk Outline
Computing Intelligently The complexity of science The triumvirate of understanding Dealing with information deluge The Missing Link: Images and Text Need for/of the Grid Afterword
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Afterword: The Department of Computing
Software Engineering Theoretical Computing Knowledge Management Neural Computing Information Extraction and Multi-media
Group
A research-active Department
•Applied to EPSRC to be involved with e-Science Programme
•Looking to develop industrial collaborations for ALL research activities
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Afterword: The Department of Computing
A Department that has or is looking forward to active collaboration within the University:
•Computer Vision (CVSSP – the new JIF Lab)•Satellite Engineering (SSTL – Best Practice)
•Linguistics & Dance
A Department that is looking forward to active collaboration outside the University with:
Unis Sheffield, Southampton, Metropolitan Police College, Queen Mary London
A Department that looking forward to exploit its software systems especially financial prediction systems, language engineering systems.