A Collaborative Approach for Metadata Management for Internet of Things
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The document presents a collaborative approach for metadata management in Internet of Things (IoT) systems, addressing the challenges posed by dynamic environments that render metadata invalid. It proposes a task assignment system leveraging location and availability information from crowds to improve metadata acquisition, demonstrated through an energy management use case. The implementation shows positive results, indicating potential for further development and application across various scenarios.
A Collaborative Approach for Metadata Management for Internet of Things
- 1. Copyright 2010 Digital Enterprise Research Institute. All rights reserved. Digital Enterprise Research Institute www.deri.ie A COLLABORATIVE APPROACH FOR METADATA MANAGEMENT FOR INTERNET OF THINGS Umair ul Hassan, Murilo Bassora, Ali H. Vahid, Sean O’Riain, Edward Curry Digital Enterprise Research Institute National University of Ireland, Galway First International Workshop on Internet of Things Austin, Texas, USA C-IOT 2013
- 2. Digital Enterprise Research Institute www.deri.ie Agenda Paper Overview Motivation Architecture Task Assignment Implementation Experiment Summary 2
- 3. Digital Enterprise Research Institute www.deri.ie Paper Overview Motivation Internet of Things (IoT) based systems gather data about things and their environment Metadata describes things as well as their context and environment Dynamism Problem Changing environment and context renders metadata invalid Acquisition of metadata is difficult and expensive Contribution A collaborative approach for metadata acquisition and management through non-experts Use location and availability information of crowds to assign tasks 3
- 4. Digital Enterprise Research Institute www.deri.ie Architecture Our focus Data Management for IOT Task Management for IOT 4
- 5. Digital Enterprise Research Institute www.deri.ie Data Management for IOT Three types of information Sensor observations data Metadata about sensors and its context Data processing rules Rate of change for above information 5
- 6. Digital Enterprise Research Institute www.deri.ie Task Management for IOT Middleware to access crowds Core functionality Task Assignment Task Presentation Quality Assurance 6
- 7. Digital Enterprise Research Institute www.deri.ie Task Assignment Location and availability information enables assignment of task to appropriate person Two method of task assignment Task Pull Task Push 7
- 8. Digital Enterprise Research Institute www.deri.ie Task Assignment: Pull Link tasks with “things” using QR code QR code represents a URL URL renders task in appropriate browser 8
- 9. Digital Enterprise Research Institute www.deri.ie Task Assignment: Push Use location and availability information to route tasks Track sensor location data submitted by crowd Assignment tasks related to submitted location information 9
- 10. Digital Enterprise Research Institute www.deri.ie Implementation Use case Energy Management System for small commercial buildings Digital Enterprise Research Institute (DERI) 130 Occupants 22 Office Units Deployment 14 CoAP sensors Customer Web Application 10
- 11. Digital Enterprise Research Institute www.deri.ie Screenshot 11
- 12. Digital Enterprise Research Institute www.deri.ie Linked Dataspace A dataspace supports coexistence of heterogeneous energy data sources Linked Data to overcome interoperability issues through Web standards Linked dataspace for Energy Intelligence (LEI) Micro Tasks -> Incremental Metadata Improvement Our collaborative approach supports the incremental improvement paradigm of dataspaces 12
- 13. Digital Enterprise Research Institute www.deri.ie Building Energy Data Observations Metadata 13 { "sensorId": "coap_sensor_001", "timestamp": "2013-07-14 19:43:37", "reading": "25", "type": "temperature", "unit": "C" } { "sensorId": "coap_sensor_001", "sensorName": "DERI CoAP Sensor 1", "location": "r112" "platform": "desk" } { "roomId": "r112", "wing": "2nd-floor-south-wing", "lights": 5, "windows": 2, "heaters": 2 }
- 14. Digital Enterprise Research Institute www.deri.ie Micro Tasks Task Description Assignment Method Sensor Location This task requires participants to specify the location of sensor Task pull based on QR code Room Lights This task asks participants to specify number of fluorescent light installed in the room Task push based on per-son location Room Heaters This task asks participants to specify the number for heaters in the room Task push based on per-son location Room Windows This task asks participants to specify the number of windows in the room Task push based on per-son location 14
- 15. Digital Enterprise Research Institute www.deri.ie Experiment & Results Deployed system with no sensor locations and rooms data Building occupants received email to find sensors and scan QR codes Accuracy of crowd submitted data 15 Task Accuracy Sensor Location 85.71% Room Lights 100% Room Heaters 83.33% Room Windows 100%
- 16. Digital Enterprise Research Institute www.deri.ie Observations Proposed approach is simple Results indicate positive potential application Simple user interface and short completion time of tasks is important for non-expert contribution Future Work More use cases Large scale study Crowd motivation 16
- 17. Digital Enterprise Research Institute www.deri.ie Further Reading U. Ul Hassan, M. Bassora, A. H. Vahid, S. O'Riain and E. Curry, “Collaborative Approach for Metadata Management for IoT: Linking Micro Tasks with Physical Objects,” in First International Workshop on Internet of Things, 2013. http://deri.ie/users/umair-ul-hassan 17 First International Workshop on Internet of Things Austin, Texas, USA 20 October 2013
Editor's Notes
- #10: Show workflow with diagram