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This work was supported by the FP7-ICT project CARRE (No. 611140), funded in part by the
European Commission.
George Drosatos
Avi Arampatzis and Eleni Kaldoudi
School of Medicine
Dept. of Electric and Computer Engineering
Democritus University of Thrace
G. Drosatos, IUPESM – World Congress 2015: 2
e-Health Application
e.g.:
 Personal
 Clinical
intentions,
plans,
beliefs,
etc.
mental
personal
health
records
personal
sensors
physical
electronic
health
records
health
insurance
financial
Personal Data
Privacy
G. Drosatos, IUPESM – World Congress 2015: 3
 It is a EU funded project in the area of cardiorenal with focus to
provide personalized health
 Personal data: Sensor data (e.g. activity and blood pressure), PHR
and patient’s intentions (travel, diet, diseases, etc)
G. Drosatos, IUPESM – World Congress 2015: 4
‒ Capture Personal Information
◦ Goal: Detect intentions
‒ Possible Sources:
◦ Social Media: Facebook, Twitter, etc
◦ Browsing History
◦ Web Searches
‒ First choice: Web searches to extract intentions
◦ Good source to reveal user’s interests and intentions
◦ Web search engines are one of the most popular uses of the web, e.g.
>70% of internet users report looking online for health information
*The Pew Research Center. (2013) Health Online 2013.
http://www.pewinternet.org/2013/01/15/health-online-2013/
G. Drosatos, IUPESM – World Congress 2015: 5
 What is privacy?
◦ “The right to be let alone” [Warren and Brandeis, 1890]
◦ “The right of the individual to decide what information about himself
should be communicated to others and under what circumstances”
[Westin, 1970]
◦ The right to informational self-determination [1983]
 Personal Data: Any information that refers to a person
 Related Legislation: e.g. EU Data Protection Directive 95/46/EC
◦ Indicative principles:
 Reported and transparent processing
 Finality & Purpose Limitation
 Personal data quality
 Security
 Personal data traffic outside EU
G. Drosatos, IUPESM – World Congress 2015: 6
main principle: preserve the patients’ privacy
G. Drosatos, IUPESM – World Congress 2015: 7
(1) Offline, initialization process
◦ predefine query categories (~250)
◦ create index of documents = the
collection of top most related
documents to each category from
a set representative of the entire
web (ClueWeb 09_b)
(2) Real-time repetitive process
◦ run user query in the index
◦ based on the results, associate
user query with predefined
categories
*Agrawal R., Yu X et al. , Neural Information Proc., Springer, 7064 of LNCS, pp 148-157, 2011
privacy preserving: step #2 process is performed on user-side
G. Drosatos, IUPESM – World Congress 2015: 8
‒ Query Detector as a browser extension
◦ Firefox
◦ Chrome
‒ User Intention Extractor as a Java application
◦ Platform independent
G. Drosatos, IUPESM – World Congress 2015: 9
‒ Query Detector as a browser extension
◦ Firefox
◦ Chrome
‒ User Intention Extractor as a Java application
◦ Platform independent
G. Drosatos, IUPESM – World Congress 2015: 10
‒ Query Detector as a browser extension
◦ Firefox
◦ Chrome
‒ User Intention Extractor as a Java application
◦ Platform independent
G. Drosatos, IUPESM – World Congress 2015: 11
G. Drosatos, IUPESM – World Congress 2015: 12
 Conclusions
◦ Provide a proof of concept
◦ Apply a privacy by design approach in our methodology
 Work in Progress
◦ Improve the technique of query classification
◦ Determine the safe detected intentions based on classification technique
(without a fixed limit, e.g. n=3)
◦ Perform a user study in the side of patients in order to determine the
correctness of intentions
 Future Work
◦ Detect intentions from other online activities (e.g. social media) of patient
◦ Investigate how to utilize the intentions in a Decision Support System (DSS)
G. Drosatos, IUPESM – World Congress 2015: 13
 Slides & Reprints: http://www.drosatos.info
 Online Demonstration: http://youtu.be/IMHlIbwcDRY
 You can find binaries and source codes at:
https://www.carre-project.eu/innovation/web-lifestyle-data-aggregator/
G. Drosatos, IUPESM – World Congress 2015: 14
This work was supported by the FP7-ICT project CARRE (No. 611140),
funded in part by the European Commission.
CARRE Project: Personalized patient empowerment and shared
decision support for cardiorenal disease and comorbidities.

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Extracting Intention from Web Queries– Application in eHealth Personalization

  • 1. This work was supported by the FP7-ICT project CARRE (No. 611140), funded in part by the European Commission. George Drosatos Avi Arampatzis and Eleni Kaldoudi School of Medicine Dept. of Electric and Computer Engineering Democritus University of Thrace
  • 2. G. Drosatos, IUPESM – World Congress 2015: 2 e-Health Application e.g.:  Personal  Clinical intentions, plans, beliefs, etc. mental personal health records personal sensors physical electronic health records health insurance financial Personal Data Privacy
  • 3. G. Drosatos, IUPESM – World Congress 2015: 3  It is a EU funded project in the area of cardiorenal with focus to provide personalized health  Personal data: Sensor data (e.g. activity and blood pressure), PHR and patient’s intentions (travel, diet, diseases, etc)
  • 4. G. Drosatos, IUPESM – World Congress 2015: 4 ‒ Capture Personal Information ◦ Goal: Detect intentions ‒ Possible Sources: ◦ Social Media: Facebook, Twitter, etc ◦ Browsing History ◦ Web Searches ‒ First choice: Web searches to extract intentions ◦ Good source to reveal user’s interests and intentions ◦ Web search engines are one of the most popular uses of the web, e.g. >70% of internet users report looking online for health information *The Pew Research Center. (2013) Health Online 2013. http://www.pewinternet.org/2013/01/15/health-online-2013/
  • 5. G. Drosatos, IUPESM – World Congress 2015: 5  What is privacy? ◦ “The right to be let alone” [Warren and Brandeis, 1890] ◦ “The right of the individual to decide what information about himself should be communicated to others and under what circumstances” [Westin, 1970] ◦ The right to informational self-determination [1983]  Personal Data: Any information that refers to a person  Related Legislation: e.g. EU Data Protection Directive 95/46/EC ◦ Indicative principles:  Reported and transparent processing  Finality & Purpose Limitation  Personal data quality  Security  Personal data traffic outside EU
  • 6. G. Drosatos, IUPESM – World Congress 2015: 6 main principle: preserve the patients’ privacy
  • 7. G. Drosatos, IUPESM – World Congress 2015: 7 (1) Offline, initialization process ◦ predefine query categories (~250) ◦ create index of documents = the collection of top most related documents to each category from a set representative of the entire web (ClueWeb 09_b) (2) Real-time repetitive process ◦ run user query in the index ◦ based on the results, associate user query with predefined categories *Agrawal R., Yu X et al. , Neural Information Proc., Springer, 7064 of LNCS, pp 148-157, 2011 privacy preserving: step #2 process is performed on user-side
  • 8. G. Drosatos, IUPESM – World Congress 2015: 8 ‒ Query Detector as a browser extension ◦ Firefox ◦ Chrome ‒ User Intention Extractor as a Java application ◦ Platform independent
  • 9. G. Drosatos, IUPESM – World Congress 2015: 9 ‒ Query Detector as a browser extension ◦ Firefox ◦ Chrome ‒ User Intention Extractor as a Java application ◦ Platform independent
  • 10. G. Drosatos, IUPESM – World Congress 2015: 10 ‒ Query Detector as a browser extension ◦ Firefox ◦ Chrome ‒ User Intention Extractor as a Java application ◦ Platform independent
  • 11. G. Drosatos, IUPESM – World Congress 2015: 11
  • 12. G. Drosatos, IUPESM – World Congress 2015: 12  Conclusions ◦ Provide a proof of concept ◦ Apply a privacy by design approach in our methodology  Work in Progress ◦ Improve the technique of query classification ◦ Determine the safe detected intentions based on classification technique (without a fixed limit, e.g. n=3) ◦ Perform a user study in the side of patients in order to determine the correctness of intentions  Future Work ◦ Detect intentions from other online activities (e.g. social media) of patient ◦ Investigate how to utilize the intentions in a Decision Support System (DSS)
  • 13. G. Drosatos, IUPESM – World Congress 2015: 13  Slides & Reprints: http://www.drosatos.info  Online Demonstration: http://youtu.be/IMHlIbwcDRY  You can find binaries and source codes at: https://www.carre-project.eu/innovation/web-lifestyle-data-aggregator/
  • 14. G. Drosatos, IUPESM – World Congress 2015: 14 This work was supported by the FP7-ICT project CARRE (No. 611140), funded in part by the European Commission. CARRE Project: Personalized patient empowerment and shared decision support for cardiorenal disease and comorbidities.