.. .. Related-works,

, SCDIoT: Social Cross-domain IoT enabling Application-to-Application Communication

.. .. Proposed-framework,

F. Challenges and . .. Research-directions, , p.153

D. .. Summary,

, SCDIoT: Social Cross-domain IoT enabling Applicationto-Application Communication Contents 6.1 Conclusion

.. .. Future-work,

Y. Saleem, N. Crespi, M. H. Rehmani, R. Copeland, D. Hussein et al., Exploitation of Social IoT for Recommendation Services, IEEE 3rd World Forum on Internet of Things (WF-IoT), pp.359-364, 2016.
URL : https://hal.archives-ouvertes.fr/hal-01468020

S. Shepard, RFID: Radio Frequency Identification, 2005.

S. Farahani, ZigBee Wireless Networks and Transceivers, 2011.

A. Zanella, N. Bui, A. Castellani, L. Vangelista, and M. Zorzi, Internet of Things for Smart Cities, IEEE Internet of Things Journal, vol.1, issue.1, pp.22-32, 2014.

A. D. Esposte, E. F. Santana, L. Kanashiro, F. M. Costa, K. R. Braghetto et al., Design and Evaluation of a Scalable Smart City Software Platform with Large-Scale Simulations, Future Generation Computer Systems, vol.93, pp.427-441, 2019.

S. Santander, Last accessed, 2019.

H. Digital, Last accessed, 2019.

G. Smart-city, Last accessed, 2019.

A. Smart-city, Last accessed, 2019.

C. Copenhagen, Last accessed, 2019.

. Mint-madrid-inteligente, Last accessed, 2019.

D. Now, Last accessed, 2019.

T. N. Pham, M. Tsai, D. B. Nguyen, C. Dow, and D. Deng, A Cloud-based Smart-parking System based on Internet-of-Things Technologies, IEEE Access, vol.3, pp.1581-1591, 2015.

L. Mainetti, L. Palano, L. Patrono, M. L. Stefanizzi, and R. Vergallo, Integration of RFID and WSN technologies in a Smart Parking System, 22nd International Conference on Software, Telecommunications and Computer Networks (SoftCOM), pp.104-110, 2014.

C. W. Hsu, M. H. Shih, H. Y. Huang, Y. C. Shiue, and S. C. Huang, Verification of Smart Guiding System to Search for Parking Space via DSRC Communication, 12th International Conference on ITS Telecommunications, pp.77-81, 2012.

P. Samarati, Protecting Respondents' Identities in Microdata Release, IEEE Transactions on Knowledge and Data Engineering, vol.13, issue.6, pp.1010-1027, 2001.

T. Li, N. Li, J. Zhang, and I. Molloy, Slicing: A New Approach for Privacy Preserving Data Publishing, IEEE Transactions on Knowledge and Data Engineering, vol.24, issue.3, pp.561-574, 2012.

L. Sweeney, k-anonymity: A Model for Protecting Privacy, International Journal of Uncertainty, Puzziness and Knowledge-Based Systems, vol.10, issue.5, pp.557-570, 2002.

A. Machanavajjhala, J. Gehrke, D. Kifer, and M. Venkitasubramaniam, l-Diversity: Privacy Beyond k-Anonymity, 22nd International Conference on Data Engineering (ICDE), pp.24-35, 2006.

N. Li, T. Li, and S. Venkatasubramanian, t-Closeness: Privacy Beyond k-Anonymity and l-Diversity, IEEE 23rd International Conference on Data Engineering, pp.106-115, 2007.

C. Dwork, Differential Privacy, Automata, Languages and Programming, pp.1-12, 2006.

J. Salas, Sanitizing and Measuring Privacy of Large Sparse Datasets for Recommender Systems, Journal of Ambient Intelligence and Humanized Computing, pp.1-12, 2019.

L. Atzori, A. Iera, G. Morabito, and M. Nitti, The Social Internet of Things (SIoT)-When Social Networks Meet the Internet of Things: Concept, Architecture and Network Characterization, vol.56, pp.3594-3608, 2012.

M. Nitti, R. Girau, A. Floris, and L. Atzori, On Adding the Social Dimension to the Internet of Vehicles: Friendship and Middleware, IEEE International Black Sea Conference on Communications and Networking, pp.134-138, 2014.

M. Nitti and L. Atzori, What the SIoT needs: A New Caching System or New Friendship Selection Mechanism, 2015 IEEE 2nd World Forum on Internet of Things (WF-IoT), pp.424-429, 2015.

T. Berners-lee, J. Hendler, and O. Lassila, The Semantic Web, Scientific American, vol.284, issue.5, pp.28-37, 2001.

P. Barnaghi, W. Wang, C. Henson, and K. Taylor, Semantics for the Internet of Things: Early Progress and Back to the Future, International Journal on Semantic Web and Information Systems (IJSWIS), vol.8, issue.1, pp.1-21, 2012.

A. Gyrard, Designing Cross-Domain Semantic Web of Things Applications, 2015.
URL : https://hal.archives-ouvertes.fr/tel-01217561

, D2.1 -Morphing Mediation Gateway with Management and Configuration Functions R1. Last Accessed, 2020.

, Morphing-Mediation-Gateway-with-Management-and-Configuration-Functions-R1-Final-version

, D3.2 -Integrated Platforms R2. Last Accessed, 2020.

, D2.6 -Self-Adaptive Recommendation System. Last Accessed, 2019.

, Worldwide interoperability for semantics iot (wise-iot)

A. Fernandez-ares, A. Mora, M. Arenas, P. Garcia-sanchez, G. Romero et al., Studying Real Traffic and Mobility Scenarios for a Smart City using a New Monitoring and Tracking System, Future Generation Computer Systems, vol.76, pp.163-179, 2017.

A. Ziat, B. Leroy, N. Baskiotis, and L. Denoyer, Joint Prediction of Road-Traffic and Parking Occupancy over a City with Representation Learning, IEEE International Conference on Intelligent Transportation Systems (ITSC), pp.725-730, 2016.
URL : https://hal.archives-ouvertes.fr/hal-01568009

R. Y. Lau, Toward a Social Sensor Based Framework for Intelligent Transportation, IEEE 18th International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM, pp.1-6, 2017.

C. T. Barba, M. A. Mateos, P. R. Soto, A. M. Mezher, and M. A. Igartua, Smart City for VANETs using Warning Messages, Traffic Statistics and Intelligent Traffic Lights, IEEE Intelligent Vehicles Symposium (IV), pp.902-907, 2012.

D. C. Shoup, Cruising for Parking, Transport Policy, vol.13, issue.6, pp.479-486, 2006.

, Brouter Offline Routing Engine. Last Accessed, 2018.

, Open street maps. Last Accessed, 2018.

, Traffic sensors at santander, spain. Last Accessed, 2018.

S. Poslad, S. E. Middleton, F. Chaves, R. Tao, O. Necmioglu et al., A Semantic IoT Early Warning System for Natural Environment Crisis Management, IEEE Transactions on Emerging Topics in Computing, vol.3, issue.2, pp.246-257, 2015.

G. Vojkovic, Will the gdpr slow down development of smart cities

E. Mougiakou and M. Virvou, Based on GDPR Privacy in UML: Case of e-Learning Program, 2017 8th International Conference on Information, Intelligence, Systems & Applications (IISA, pp.1-8, 2017.

P. Sotres, J. Lanza, L. Sanchez, J. R. Santana, C. Lopez et al., Breaking Vendors and City Locks through a Semantic-enabled Global Interoperable Internet-of-Things System: A Smart Parking Case, Sensors, vol.19, issue.2, p.229, 2019.

P. Sotres, J. R. Santana, L. Sanchez, J. Lanza, and L. Munoz, Practical Lessons from the Deployment and Management of a Smart City Internet-of-Things Infrastructure: The SmartSantander Testbed Case, IEEE Access, vol.5, pp.14-309, 2017.

L. Sanchez, L. Munoz, J. A. Galache, P. Sotres, J. R. Santana et al., SmartSantander: IoT experimentation over a smart city testbed, Computer Networks, vol.61, pp.217-238, 2014.

, Smart Santander Data Sets

H. Baqa, N. B. Truong, N. Crespi, G. M. Lee, and F. L. Gall, Quality of Information as an Indicator of Trust in the Internet of Things, IEEE 17th International Conference On Trust, Security And Privacy In Computing And Communications/12th IEEE International Conference On Big Data Science And Engineering, pp.204-211, 2018.
URL : https://hal.archives-ouvertes.fr/hal-01988367

D. Wuest, F. Fotrousi, and S. Fricker, Combining Monitoring and Autonomous Feedback Requests to Elicit Actionable Knowledge of System Use, International Working Conference on Requirements Engineering: Foundation for Software Quality (RefsQ), pp.209-225, 2019.

P. Sotres, C. L. De-la-torre, L. Sanchez, S. Jeong, and J. Kim, Smart City Services Over a Global Interoperable Internet-of-Things System: The Smart Parking Case, Global Internet of Things Summit, pp.1-6, 2018.

R. E. Barone, T. Giuffre, S. M. Siniscalchi, M. A. Morgano, and G. Tesoriere, Architecture for Parking Management in Smart Cities, IET Intelligent Transport Systems, vol.8, issue.5, pp.445-452, 2013.

C. Shiyao, W. Ming, L. Chen, and R. Na, The research and implement of the intelligent parking reservation management system based on zigbee technology, Sixth International Conference on Measuring Technology and Mechatronics Automation (ICMTMA), pp.741-744, 2014.

L. Lambrinos and A. Dosis, DisAssist: An Internet of Things and Mobile Communications Platform for Disabled Parking Space Management, IEEE Global Communications Conference (GLOBECOM), pp.2810-2815, 2013.

. Fiware and . Last, oneM2M -Standards for M2M and the Internet of Things, vol.56, 2019.

. Fiware-data-models, Last accessed, 2019.

, Open Mobile Alliance, NGSI Context Management, 2012.

, FIWARE Data Model for Parking, 2019.

, Available: https, 2019.

D. Barth, The Bright Side of Sitting in Traffic: Crowdsourcing Road Congestion Data, Google Official Blog, 2009.

, Orion Context Broker. Last accessed, 2019.

Y. Saleem and N. Crespi, Mapping of Sensor and Route Coordinates for Smart Cities, 2018 IEEE 42nd Annual Computer Software and Applications Conference (COMPSAC), vol.1, pp.570-576, 2018.
URL : https://hal.archives-ouvertes.fr/hal-01988425

D. Protection, Rules for the Protection of Personal Data Inside and Outside the EU, 2018.

, GDPR Explained In 5 Minutes: Everything You Need to Know

C. Bettstetter and S. Konig, On the Message and Time complexity of a Distributed Mobility-Adaptive Clustering Algorithm in Wireless Ad Hoc Networks, Proceedings of the Fourth European Wireless Conference, pp.128-134, 2002.

, Clustering Overhead and Convergence Time Analysis of the Mobility-based Multi-Hop Clustering Algorithm for Mobile Ad Hoc Networks, author=Er, Inn Inn and Seah, Winston KG, journal=Journal of Computer and System Sciences, volume=72, vol.7, pp.1144-1155, 2006.

P. Sotres, C. L. Torre, L. Sanchez, S. Jeong, and J. Kim, Smart city services over a global interoperable internet-of-things system: The smart parking case, Global Internet of Things Summit, GIoTS, 2018.

, Business Requirements, and Draft High-Level Architecture. Last Accessed, 2019.

, Open snow map routing engine. Last Accessed, 2018.

, GraphHopper Routing Engine. Last Accessed, 2019.

M. E. Andrés, N. E. Bordenabe, K. Chatzikokolakis, and C. Palamidessi, Geo-indistinguishability: Differential Privacy for Location-based Systems, Proceedings of the ACM Conference on Computer and Communications Security, pp.901-914, 2013.

J. Ni, K. Zhang, Y. Yu, X. Lin, and X. Shen, Privacy-Preserving Smart Parking Navigation Supporting Efficient Driving Guidance Retrieval, IEEE Transactions on Vehicular Technology, vol.67, issue.7, pp.6504-6517, 2018.

J. Ni, K. Zhang, X. Lin, Y. Yu, and X. S. Shen, Cloud-Based Privacy-Preserving Parking Navigation Through Vehicular Communications, International Conference on Security and Privacy in Communication Systems, pp.85-103, 2016.

I. Chatzigiannakis, A. Vitaletti, and A. Pyrgelis, A Privacy-preserving Smart Parking System using an IoT Elliptic Curve based Security Platform, Computer Communications, vol.89, issue.90, pp.165-177, 2016.

,

C. Huang, R. Lu, X. Lin, and X. Shen, Secure Automated Valet Parking: A Privacy-Preserving Reservation Scheme for Autonomous Vehicles, IEEE Transactions on Vehicular Technology, vol.67, issue.11, pp.11-169, 2018.

R. Lu, X. Lin, H. Zhu, and X. Shen, SPARK: A New VANET-Based Smart Parking Scheme for Large Parking Lots, Proceedings -IEEE INFOCOM, pp.1413-1421, 2009.

, An Intelligent Secure and Privacy-Preserving Parking Scheme Through Vehicular Communications, IEEE Transactions on Vehicular Technology, vol.59, issue.6, pp.2772-2785, 2010.

G. Yan, W. Yang, D. B. Rawat, and S. Olariu, SmartParking: A Secure and Intelligent Parking System, IEEE Intelligent Transportation Systems Magazine, vol.3, issue.1, pp.18-30, 2011.

A. Alqazzaz, I. Alrashdi, E. Aloufi, M. Zohdy, and H. Ming, SecSPS: A Secure and Privacy-Preserving Framework for Smart Parking Systems, Journal of Information Security, vol.9, issue.4, pp.299-314, 2018.

R. Garra and S. Mart, A Privacy-Preserving Pay-by-Phone Parking System, IEEE Transactions on Vehicular Technology, vol.66, issue.7, pp.5697-5706, 2017.

J. Hu, D. He, Q. Zhao, and K. K. Choo, Parking Management: A Blockchain-Based Privacy-Preserving System, IEEE Consumer Electronics Magazine, vol.8, issue.4, pp.45-49, 2019.

T. Zhu, G. Li, W. Zhou, and P. S. Yu, Differentially Private Data Publishing and Analysis: A Survey, IEEE Transactions on Knowledge and Data Engineering, vol.29, issue.8, pp.1619-1638, 2017.

J. Soria-comas, J. Domingo-ferrer, D. Sanchez, and D. Megias, Individual Differential Privacy: A Utility-Preserving Formulation of Differential Privacy Guarantees, IEEE Transactions on Information Forensics and Security, vol.12, issue.6, pp.1418-1429, 2017.

K. Lefevre, D. J. Dewitt, and R. Ramakrishnan, Incognito: Efficient full-domain K-anonymity, Proceedings of the ACM SIGMOD International Conference on Management of Data, pp.49-60, 2005.

R. J. Bayardo and R. , Data Privacy Through Optimal k-Anonymization, 21st International Conference on Data Engineering, pp.217-228, 2005.

W. Fan, J. He, M. Guo, P. Li, Z. Han et al., Privacy Preserving Classification on Local Differential Privacy in Data Centers, Journal of Parallel and Distributed Computing, vol.135, pp.70-82, 2020.

,

X. Su, G. Sperli, V. Moscato, A. Picariello, C. Esposito et al., An Edge Intelligence Empowered Recommender System Enabling Cultural Heritage Applications, IEEE Transactions on Industrial Informatics, vol.15, issue.7, pp.4266-4275, 2019.

J. Bobadilla, F. Ortega, A. Hernando, and A. Gutiérrez, Recommender systems survey, Knowledge-Based Systems, vol.46, pp.109-132, 2013.

J. Yu, M. Gao, W. Rong, Y. Song, and Q. Xiong, A Social Recommender Based on Factorization and Distance Metric Learning, IEEE Access, vol.5, pp.21-557, 2017.

L. E. Holmquist, F. Mattern, B. Schiele, P. Alahuhta, M. Beigl et al., Smart-its Friends: A Technique for Users to Easily Establish Connections Between Smart Artefacts, international conference on Ubiquitous Computing, pp.116-122, 2001.

J. Bleecker, A Manifesto for Networked Objects-cohabiting with Pigeons, Arphids and Aibos in the Internet of Things, Proc. of the 13th International Conference on Human-Computer Interaction with Mobile Devices and Services, MobileHCI, pp.1-17, 2006.

E. Nazzi and T. Sokoler, Walky for Embodied Microblogging: Sharing Mundane Activities through Augmented Everyday Objects, Proceedings of the 13th International Conference on Human Computer Interaction with Mobile Devices and Services, pp.563-568, 2011.

P. Mendes, Social-driven Internet of Connected Objects, IAB workshop on Interconnecting Smart Objects with the Internet, 2011.

H. Ning and Z. Wang, Future Internet of Things Architecture: Like Mankind Neural System or Social Organization Framework?, IEEE Communications Letters, vol.15, issue.4, pp.461-463, 2011.

L. Ding, P. Shi, and B. Liu, The Clustering of Internet, Internet of Things and Social Network, 3rd International Symposium on Knowledge Acquisition and Modeling (KAM), pp.417-420, 2010.

D. Guinard, M. Fischer, and V. Trifa, Sharing Using Social Networks in a Composable Web of Things, PerCom Workshops, pp.702-707, 2010.

M. Kranz, L. Roalter, and F. Michahelles, Things that Twitter: Social Networks and the Internet of Things, What can the Internet of Things do for the Citizen (CIoT) Workshop at The Eighth International Conference on Pervasive Computing, pp.1-10, 2010.

J. An, X. Gui, W. Zhang, and J. Jiang, Nodes Social Relations Cognition for Mobility-aware in the Internet of Things, 2011 International Conference on Internet of Things and 4th International Conference on Cyber, pp.687-691, 2011.

K. Rasch, Smart Assistants for Smart Homes, 2013.

D. Hussein, S. N. Han, G. M. Lee, and N. Crespi, Social Cloud-Based Cognitive Reasoning for Task-Oriented Recommendation, IEEE Cloud Computing, vol.2, issue.6, pp.10-19, 2015.
URL : https://hal.archives-ouvertes.fr/hal-01331993

J. E. Kim, X. Fan, and D. Mosse, Empowering End Users for Social Internet of Things, IEEE/ACM Second International Conference on Internet-of-Things Design and Implementation (IoTDI, pp.71-82, 2017.

R. Girau, S. Martis, and L. Atzori, Lysis: A Platform for IoT Distributed Applications over Socially Connected Objects, IEEE Internet of Things Journal, vol.4, issue.1, pp.40-51, 2017.

J. F. Colom, H. Mora, D. Gil, and M. T. Signes-pont, Collaborative Building of Behavioural Models based on Internet of Things, vol.58, pp.385-396, 2017.

S. Lee, S. Kim, K. Choi, and T. Shon, Game theory-based Security Vulnerability Quantification for Social Internet of Things, Future Generation Computer Systems, 2017.

A. Ahmad, M. Khan, A. Paul, S. Din, M. M. Rathore et al., Toward Modeling and Optimization of Features Selection in Big Data based Social Internet of Things, Future Generation Computer Systems, vol.82, pp.715-726, 2018.

G. Han, L. Zhou, H. Wang, W. Zhang, and S. Chan, A Source Location Protection Protocol based on Dynamic Routing in WSNs for the Social Internet of Things, Future Generation Computer Systems, vol.82, pp.689-697, 2018.

Z. Song, Y. Sun, J. Wan, L. Huang, Y. Xu et al., Exploring Robustness Management of Social Internet of Things for Customization Manufacturing, Future Generation Computer Systems, vol.92, pp.846-856, 2019.

M. Z. Hasan and F. Al-turjman, SWARM-based data delivery in Social Internet of Things, Future Generation Computer Systems, vol.92, pp.821-836, 2019.

F. Al-turjman, 5G-enabled Devices and Smart-spaces in Social-IoT: An Overview, Future Generation Computer Systems, vol.92, pp.732-744, 2019.

B. Afzal, M. Umair, G. A. Shah, and E. Ahmed, Enabling IoT Platforms for Social IoT Applications: Vision, Feature Mapping, and Challenges, Future Generation Computer Systems, vol.92, pp.718-731, 2019.

X. Chen, L. Sun, H. Zhu, Y. Zhen, and H. Chen, Application of Internet of Things in Power-Line Monitoring, International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery (CyberC), pp.423-426, 2012.

L. Atzori, A. Iera, and G. Morabito, SIoT: Giving a social structure to the Internet of Things, IEEE communications letters, vol.15, issue.11, pp.1193-1195, 2011.

V. Beltran, A. M. Ortiz, D. Hussein, and N. Crespi, A Semantic Service Creation Platform for Social IoT, IEEE World Forum on Internet of Things (WF-IoT), pp.283-286, 2014.
URL : https://hal.archives-ouvertes.fr/hal-01263317

, FIESTA-IoT -Federated Interoperable Semantic IoT Testbeds and Applications, 2019.

M. Nitti, L. Atzori, and I. P. Cvijikj, Network Navigability in the Social Internet of Things, IEEE World Forum on Internet of Things (WF-IoT), pp.405-410, 2014.

A. Gyrard, C. Bonnet, and K. Boudaoud, Enrich Machine-to-Machine Data with Semantic Web Technologies for Cross-domain Applications, IEEE World Forum on Internet of Things (WF-IoT), pp.559-564, 2014.
URL : https://hal.archives-ouvertes.fr/hal-01343226

C. Savaglio and G. Fortino, Autonomic and Cognitive Architectures for the Internet of Things, International Conference on Internet and Distributed Computing Systems, pp.39-47, 2015.

, An example of coordinates mapping having no deviation. The lines originating from and terminating at map markers, represent the routes. The arrowhead lines represent the direction of the route (i.e., starting and ending points) and the "Part xyz" above the arrowhead lines corresponds to the matching parts mentioned in Algorithm 1

, The lines originating from and terminating at map markers, represent the routes. The arrowhead lines represent the direction of the route (i.e., starting and ending points) and the "Part xyz" above the arrowhead lines corresponds to the matching parts mentioned in Algorithm 1

. Santander and . .. Spain,

, Mapping of traffic sensors coordinates into routing coordinates

, Percentage of correct detection of sensors on the routes

, Percentage of missed detection (non-detection) of sensors on the routes

, Percentage of false detection of sensors on the routes

, Spain (a) traffic sensor deployment, (b) parking sensor deployment

, OnStreetParking (parking area) and TrafficFlowObserved (traffic information) entities

, UML component diagram of the IoTRec interfaces

, Aggregation of parking spots into parking areas

, (a) view of free and occupied parking spots; (b) recommendation of a parking spot and a route; (c) walking route to the parked car; and (d) an example of parking areas occupancy statistics, vol.87

. .. , Evaluation results of the quality of recommended routes and parking spots, p.89

, Evaluation results of the functionalities of the recommendations for parking spot availability, route calculation, walking route to a parked car and parking area statistics

, Evaluation results of the ease of use of the navigation, route calculation and route analysis, p.90

, Evaluation results of the reliability of the provided parking spot data and parking area occupancy statistics

, An overview of Chamrousse ski resort

, Skiing route for advanced users by IoT recommender and Open Snow Map

, Skiing route for intermediate users by IoT recommender and Open Snow Map

, Skiing route for beginner users by IoT recommender and Open Snow Map

, 97 3.25 UML component diagram of the interfaces of IoT recommender for smart skiing, p.99

, System architecture of privacy preserving parking system

. .. , Performance evaluation of k-anonymity when QIA = 1 (user latitude), p.115

. .. , Performance evaluation of k-anonymity when QIA = 2 (user latitude, user longitude), vol.118

, Performance evaluation of k-anonymity when QIA = 3 (user latitude, user longitude, parking id), p.122

, Performance evaluation of k-anonymity when QIA = 3 (user latitude, user longitude, timestamp), p.125

, Performance evaluation of k-anonymity when QIA = 4 (user latitude, user longitude, timestamp, parking id)

, Performance evaluation of k-anonymity for all QIA = 1, 2, 3, 4

. .. =1, MAE and RMSE for varying privacy budget when sensitivity ( f ), p.134

. .. =2, 134 4.10 MAE and RMSE for varying privacy budget when sensitivity ( f )=3, MAE and RMSE for varying privacy budget when sensitivity ( f )

. .. =4, MAE and RMSE for varying privacy budget when sensitivity ( f ), p.135

. .. =5, MAE and RMSE for varying privacy budget when sensitivity ( f ), p.136

. .. , MAE and RMSE for varying privacy budget when sensitivity ( f )=1, 2, 3, 4, 5, p.137

, 145 5.2 A sample application scenario in which different applications benefit from the SIoT by using other application's data

. .. Proposed-framework-of-scdiot, 151 3.1 Properties of parking spot, parking area (OnStreetParking) and traffic information (TrafficFlowObserved) entities

, Example of Status-wise Storage of Parking Sensor Data

, Example of Storage of Parking Spot Occupancy Statistics for 52 weeks

, Example of Storage of Parking Area Occupancy Statistics

, Questionnaire for the evaluation of the IoTRec functionalities through the prototype, p.88

, An example snapshot of data table for parking recommendation

, Description of the experimentation database for anonymization