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Towards an emerging animal disease surveillance system based on textual media analysis S. Valentin, R. Lancelot, M. Roche S. Valentin - Living Territories - 2018/01/23 (Montpellier) Monitoring of international animal health events Official

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Towards an emerging animal disease surveillance system based on textual media analysis

S. Valentin, R. Lancelot, M. Roche

S. Valentin - Living Territories - 2018/01/23 (Montpellier)

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Monitoring of international animal health events

Official sources Unofficial sources

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PADI-web

 ‘Platform for Automated extraction of animal Disease Information

from the web’

African swine fever Foot-and- mouth disease Bluetongue Schmallenberg virus Avian Influenza

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What is done

(2) Data classification (3) Information extraction (1) Data acquisition

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Data classification

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What is done

(2) Data classification (3) Information extraction (1) Data acquisition

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Information extraction

 Based on text mining methods

 Rule-based approach (labelled corpus)  SVM classification

Type Accuracy

Location 0.80 Dates 0.88 Diseases 0.96 Cases 0.85 Species 0.96

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Challenges and issues

Identification of information Combination of information Epidemiological knowledge

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Identification of information:

How to deal with spatial ambiguity?

 Spatial ambiguities (Amitay et al. 2004)

T ype of ambiguity Example Geo/non-geo ‘This’, France vs ‘This’, preposition Geo/geo ‘Paris’, France vs ‘Paris’, Texas Geo/organization ‘the Paris-based OIE’

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Identification of information:

What are we looking for?

Symptoms

malformation hyperthermia diarrhea anorexia weakness …

Syndroms

reproductive digestive …

Heterogeneous data

zootechnical data laboratory data economical …

Weak signals

?

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Combination of information Official sources

Source 1 Source 2 … Source n

Unofficial sources

Spatial entities T emporal entities Diseases Hosts Syndroms

How to combine?

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Conclusion

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