Semantic Interpreter <i>Pythia</i> : GIS-based Expert Knowledge Algorithm for Automated Geotechnical Soil Profiling of Applicable Data


  • Maria Apostolos Papadopoulou Thessaly local government Greece



Geotechnical Engineering, Geographical Information Systems (GIS), Semantic Interpreter (SI), Online Engineering (OE), Spatial Reasoning/Intelligence, Spatial Data Infrastructure, Data Integration


Although the fields of geospatial data are growing rapidly, the result is still not satisfactory for the needs of engineers. No systematic information is available about geotechnical subsurface soil conditions and underground artificial infrastructures. This old-age problem is two-fold: (a) inadequate available digital geotechnical data, and (b) no concepts to improving the applicability and to updating data for engineering applications. On the second, the paper proposes the innovative GIS-based model-driven data processing methodology implemented into an expert knowledge algorithm named Semantic Interpreter Pythia (thereafter SI). From the point of view of geotechnical engineering, the subject of SI is the automated multi-thematic geotechnical soil profiling (GSP) by which it determines the geometry, the properties and the stratigraphy of the site-specific subsoil. From the point of view of geographic information science, the subject of this expert is to relate multi-thematic sets of data from databases, to interpret these data with a specialized data fusion model and, ultimately, to lead to unified information in a core relational database. The paper presents the innovative idea of this algorithm to propose the development of automated SI tools by the modern GIS and internet technology. These tools could help disseminate useful and up-to-date data for a wide range of uses. Based on the experiences distilled from an extensive geotechnical case study, the paper specifies what content is appropriate for engineering studies. The notions of data applicability and geotechnical semantic interpretation arise.



INSPIRE, Directive 2007/2/EC of the European Parliament and of the Council, establishing an …Infrastructure for Spatial Information in the European Community, at

Papadopoulou Maria. A. (under review). “HelGeoRDaS_uTH: A Multi-Thematic Geotechnical Database System About The Subsurface Soil And Underground Infrastructures In Thessaly (Greece)â€, International Journal of Spatial Data Infrastructures Research (

Papadopoulou Maria A. (2019- accepted) “Geotechnical Geospatial Semantics and Interoperable GIS: the Case of GeoSeism for Automated Seismic Microzonation Studiesâ€, Asian Journal of Engineering and Technology Vol. 7, No. 1 (ISSN: 2321 – 2462).

Papadopoulou, M. A., G. S. Ioannidis (2018 a). “Mobilizing the Semantic Interpreter Pythia – Teaching Engineering Students to Integrate GIS and Soil Data During In Situ Measurementsâ€, In: Auer M., Tsiatsos T. (eds) Interactive Mobile Communication Technologies and Learning. IMCL 2017 (Advances in Intelligent Systems and Computing), vol. 725, Springer, Cham, 2018 a. DOI

ISO/TC 211, “Geographic_information/Geomaticsâ€, “Geographic_data_and_informationâ€.

Wikipedia, “Knowledge representation and reasoning (KR, KR², KR&R)â€.

Wikipedia, “Expert Computer Systemâ€.

Wikipedia, “Semantic Interpretationâ€.

Marr J. Andrew, Pascoe T. Richard, Benwell L. George, “Interoperable GIS and Spatial Process Modellingâ€, Proceedings of GeoComputation ‘97 & SIRC ’97, 1997.

Wikipedia, “Interoperabilityâ€.

Goodchild Michael , Egenhofer Max , Fegeas Robin , Kottman Cliff , “Interoperating Geographic Information Systemsâ€, (Book), 1991. DOI

Wikipedia, “Semantic Interoperabilityâ€.

Papadopoulou Maria A. “Automated methodology for seismic hazard microzonation studies of interoperable geographic information systems – The case study of a Hellenic cityâ€, Doctoral Thesis, Department of Civil Engineering, University of Thessaly, Greece, 2017. (in Greek, at .

Kulhawy F. H. and P. W. Mayne. “Manual on estimating soil properties for foundation designâ€, Report EL6800. Electric Power Research Institute, Palo Alto, 306 p, 1990.

OGC - Open Geospatial Consortium, “Fusion Standards Study, Phase 2â€, Engineering Report, Date: 2010-12-13, Reference number of this document: OGC 10-184, Category: (Public) Engineering Report, 2010.

Steinberg A. N., Bowman C. L., & White F. E., “Revisions to the JDL Data Fusion Modelâ€, ERIM International, Inc, 1999.

Dasarathy B. V., “Decision Fusionâ€, IEEE Computer Society Press, 1994.

Hayes-Roth Frederick, Waterman Donald, Lenat Douglas, “Building Expert Systemsâ€, Addison-Wesley, (Book), 1983. ISBN 0-201-10686-8




How to Cite

Papadopoulou, M. A. (2018). Semantic Interpreter <i>Pythia</i> : GIS-based Expert Knowledge Algorithm for Automated Geotechnical Soil Profiling of Applicable Data. Asian Journal of Engineering and Technology, 6(6).