Papers by David Ricardo Sol Martinez
ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
An urban sensory lab (USL or LUS an acronym in Spanish) is a new and avant-garde approach for stu... more An urban sensory lab (USL or LUS an acronym in Spanish) is a new and avant-garde approach for studying and analyzing a city. The construction of this approach allows the development of new methodologies to identify the emotional response of public space users. The laboratory combines qualitative analysis proposed by urbanists and quantitative measures managed by data analysis applications. USL is a new approach to go beyond the borders of urban knowledge. The design thinking strategy allows us to implement methods to understand the results provided by our technique. In this first approach, the interpretation is made by hand. However, our goal is to combine design thinking and machine learning in order to analyze the qualitative and quantitative data automatically. Now, the results are being used by students from the Urbanism and Architecture courses in order to get a better understanding of public spaces in Puebla, Mexico and its interaction with people.
International Conference on Engineering Education, 2010
In recent years, the possibilities for distance teaching in engineering education have increased ... more In recent years, the possibilities for distance teaching in engineering education have increased tremendously. The widespread availability of the Internet has allowed the use of rich media over long distances. As visual connectivity improves, an opportunity to enrich and rethink the place of learning design in on-line and distance education is presenting itself. This paper presents a case study of
Chorems are schematized representations of territories, and so they can represent a good visual s... more Chorems are schematized representations of territories, and so they can represent a good visual summary of spatial databases. Indeed for spatial decision-makers, it is more important to identify and map problems than facts. Until now, chorems were made manually by geographers based on the own knowledge of the territory. So, an international project was launched in order to automatically discover spatial patterns and layout chorems starting from spatial databases. After examining some manually-made chorems some guidelines were identified. Then the architecture of a prototype system is presented based on a canonical database structure, a subsystem for spatial patterns discovery based on spatial data mining, a subsystem for chorem layout, and a specialized language to represent chorems.
SAPI EN. S. Surveys …, Jan 1, 2009
Chorems can be defined as representations of elementary structure of a geographic space or as sch... more Chorems can be defined as representations of elementary structure of a geographic space or as schematized representations of territories, and as such they can represent a good candidate for generating visual summaries of spatial databases. Indeed for spatial decision-makers, it is more important to identify and map problems than facts. Until now, chorems were made manually by geographers who needed an exhaustive knowledge of the territory under study, a clear-cut set of rules to decide what the salient phenomena are, and who had no problems to cartography them. Here we present a methodology based on spatial data mining, that both diminish the requirements in terms of starting knowledge, and provide a more rigorous approach to select the important features.
International Journal of Product …, Jan 1, 2007
Our work describes a model and an application to present the car traffic simulation on the Popoca... more Our work describes a model and an application to present the car traffic simulation on the Popocatepetl Volcano zone. Since 1994, Risk Management Office in Mexico has declared around 30 km from the Popocatepetl Volcano crater a danger zone. This office defined several roads to evacuate the people when a Volcano event can be presented. Our application takes data from Geography Markup Language (GML) format describing the simulation car traffic. The system which constructs the simulation was developed for the Fraunhofer FIRST team in Berlin, Germany. The data are translated to Scalable Vector Graphics (SVG) format to be visualised in a browser and to produce in an animated cartography environment the car traffic simulation on the Popocatepetl Volcano area. A new approach based on Answer Set Programming (ASP) is introduced as a proposal to work with incomplete and uncertain data.
Advances in Visual …, Jan 1, 2007
Artificial Intelligence and Computer Science: Engineering Letters, Jul 1, 2007
This paper describes a methodology based on Answer Set Programming (ASP) to work with incomplete ... more This paper describes a methodology based on Answer Set Programming (ASP) to work with incomplete geographic data. Source geographic data which describes a risk zone is translated to ASP description and it allows to solve query’s which can not be solved by a normal GIS. An evacuation plan can change when new situations are presented, for instance traffic, a zone in extreme danger or other natural modification of the zone to be evacuated. Since 1994, Risk Management Office in Mexico has declared around 30 km from the Popocat´epetl Volcano crater a danger zone. This office defined several roads to evacuate the people when a Volcano event can be presented. Our approach allows to simulate and to give support to generate new evacuation plans. The results developed by the ASP approach can be translated to a visual format and can be incorporated to a GIS to develop other kind of analysis by using the geographic data.
Volcanoes are a very important component in the geological description of the earth. A volcano ca... more Volcanoes are a very important component in the geological description of the earth. A volcano can modify the geographical description where it is localized when an event arrives. An important activity is the observation of volcanic events to make predictions and to reduce the impact hazard (eruption, volcanic ash) on the population. Around the Popocatepetl volcano there are about 200,000 persons in several towns. The volcano events can be identified and placed on a map to help make a decision. A first work has been developed with old cartography of the zone. A first prototype has been built, and now it is used to develop an application with a geographical database. The work is made in collaboration with the Plan Popocatepetl Office from the Puebla government and CENAPRED (Centro Nacional de Prevencion de Desastres) in Mexico City. Some tools are developed to place the application in a network context. The application will be a tool to help the decision makers to protect the population.
Cuarto Congreso Internacional de Métodos Numéricos en Ingeniería y Ciencias Aplicadas, Sep 1, 2007
Our work describes a model and an application to present the car traffic simulation on the Popoca... more Our work describes a model and an application to present the car traffic simulation on the Popocatépetl Volcano zone. Since 1994, Risk Management Office in Mexico has declared around 30 km from the Popocatépetl Volcano crater a danger zone. This office defined several roads to evacuate the people when a Volcano event can be presented. Our application takes data from GML format (Geography Markup Language) describing the simulation car traffic. The system who constructs the simulation was developed for the Fraunhofer FIRST team in Berlin, Germany. The data are translated to SVG (Scalable Vector Graphics) format to be visualized in a browser and to produce in an animated cartography environment the car traffic simulation on the Popocatépetl Volcano area.
Research on Computing Science …, Jan 1, 2004
In this work, we present current results of our research which goal is to develop a decision supp... more In this work, we present current results of our research which goal is to develop a decision support system using Answer Set Programming as an extension of a Geographic Information System to model vehicular evacuation plans. We also present why an Answer Set Programming approach seems to be appropriate to explore in order to create this extension. In order to achieve our objective, we first model the disaster scenario where we are taking advantage of different features of Answer Set Programming. Once we have modeled the disaster scenario, we will define an action language to model and give solution to vehicular evacuation plans, named ALEP. We present our current results about the main features of the language ALEP. Finally, we plan to incorporate a Case Based Reasoning component to deal with real time situations, and to test ALEP language defining a DSS, as an extension of a GIS, in order to give support in developing evacuation plans in volcano Popocatepetl. We think that this DSS will be advantageous to the “Plan Operativo Popocatepetl ” office in Mexico
This paper presents a proposal to create a graph representation for GIS, using both spatial and n... more This paper presents a proposal to create a graph representation for GIS, using both spatial and non-spatial data and also including spatial relations between spatial objects. Because graphs are a powerful and flexible knowledge representation we will be able to combine spatial and non-spatial data at the same time and this is one of the strengths of the proposal. We hope to apply this knowledge representation to the data mining process with GIS data including three types of spatial relations: topological, orientation and distance.
Tercer Encuentro Internacional de Ciencias de la …, Jan 1, 2001
This paper describes a work in process to model 2D and 3D geospatial data. There are several opti... more This paper describes a work in process to model 2D and 3D geospatial data. There are several options to manage this type of data but we are looking to work with formats which allow the data exchange in a network context. In addition, the format should support analysis and visualization of data in a risk management environment. The model described in this paper will be tested with the Popocatépetl volcano data. In this context, decision making is a very important activity, about 200,000 people distributed in 50 towns are in danger when the volcano starts its activity. Plan Operativo Popocatépetl office at Puebla is responsible to coordinate the actions to help and to keep the integrity of these people. Visualization of geographic data allows an expert to analyze the different risk situations The actual work will support the decision making process and will describe a geo-spatial data model in the context of disaster management. Several tests have been made in the context of the volcano, we already have a geographic database and an Internet interface.
ict.udlap.mx
Nuestro trabajo presenta el diseño y la implementación de Objetos Geográficos (OG) que permitan e... more Nuestro trabajo presenta el diseño y la implementación de Objetos Geográficos (OG) que permitan el manejo de datos en un Sistema de Información Geográfica (SIG). Utilizando una Base de Datos Objeto-Relacional (Informix Universal Server IUS), es posible manejar la persistencia de los OG. El modelo describe OG del mundo real, así como conceptos del enfoque orientado a objetos tales como la herencia, la asociación y la clasificación. Un visualizador de objetos geográficos apoya en la administración del almacenamiento y la recuperación de objetos geográficos, permitiendo así el manejo de la persistencia. De esta manera los objetos geográficos no necesitan ser armados y desarmados para su utilización.
Encuentro Nacional de Ciencias de la Computación, Jun 15, 2001
Our paper describes a model and an application to manage urban data. This work presents the catas... more Our paper describes a model and an application to manage urban data. This work presents the catastrophe model. The goal of this model is to represent the dynamic of urban zones. New constructions and buildings can be placed inside an urban area. These constructions can produce a modification and an impact on the land. The urban area needs to keep a structure and a balance between its parameters. The parameters are those related to each polygon inside the urban area: the cost of the land, the size and use, for instance. The model proposes to combine these parameters to generate a unique number. The mechanism used to combine the parameters is the Gödel’s codification number. Qualitative data is translated into quantitative data. The application which implements the model can manage important differences between the Gödel´s numbers to show discontinuities in the studied area. The application shows the results of these analysis in 3D and includes modules to store and retrieve data from a database. The spatial data representation is supported by the OpenGIS specification consortium. Our experiment shows how data models help in real applications like urban analysis.
… information systems incorporating GIS & remote …, Jan 1, 2000
This paper describes the design and implementation of geographic data in an object/relational dat... more This paper describes the design and implementation of geographic data in an object/relational database. Infomix Universal Server (IUS) is a tool that permits the description of persistent geographic objects. The geographic objects were designed by using the OMT methodology.The application was built with the Java programming language.The objects were made persistent by using the IUS database management system. A web user interface was developed to show the geographic data. Data modeling was done by using points, lines, polylines and polygons.The data stored in the database could be exported and used by a client who runs a web user interface. Our representation gives the description to have an homogeneous geographic data representation to be used in a geographic database server.
Preferences are useful when the space of feasible solutions of a given problem is dense but not a... more Preferences are useful when the space of feasible solutions of a given problem is dense but not all these solutions are equivalent w.r.t. some additional requirements. In this case, the goal is to find feasible solutions that most satisfy these additional requirements. In order to represent preferences, in this paper we
use an extension of ordered disjunction programs. Ordered disjunction is an approach based on answer sets that allows us to represent alternative, ranked options for a problem. Moreover, we give a brief overview of two real applications of extended ordered programs in two different domains. The first one is in planning: evacuation planning. The second one is in argumentation: organ transplantation. In particular, we show the role of negated negative literals in extended ordered programs to obtain the preferred solution of each application
The paper proposes the integration of CR-prolog and se-
mantic contents in ASP to add planning ca... more The paper proposes the integration of CR-prolog and se-
mantic contents in ASP to add planning capabilities to a Geographical Information System. Nowadays, cr-rules are used to restore the consistency of a program giving the diagnosis of possible causes of failure in a plan. However, in this paper we propose to use cr-rules to obtain an alternative plan in case of the ideal plan fails, i.e., we give an additional use for cr-rules. In particular, we show the use of cr-rules in a situation related to the risk zone of volcano Popocatepetl. We show an example about how we can obtain alternative evacuation routes, using cr-rules.
Keywords: Answer sets, GIS, Planning.
Proc. of the Encuentro Nacional de Computación ENC, Jan 1, 2001
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Papers by David Ricardo Sol Martinez
use an extension of ordered disjunction programs. Ordered disjunction is an approach based on answer sets that allows us to represent alternative, ranked options for a problem. Moreover, we give a brief overview of two real applications of extended ordered programs in two different domains. The first one is in planning: evacuation planning. The second one is in argumentation: organ transplantation. In particular, we show the role of negated negative literals in extended ordered programs to obtain the preferred solution of each application
mantic contents in ASP to add planning capabilities to a Geographical Information System. Nowadays, cr-rules are used to restore the consistency of a program giving the diagnosis of possible causes of failure in a plan. However, in this paper we propose to use cr-rules to obtain an alternative plan in case of the ideal plan fails, i.e., we give an additional use for cr-rules. In particular, we show the use of cr-rules in a situation related to the risk zone of volcano Popocatepetl. We show an example about how we can obtain alternative evacuation routes, using cr-rules.
Keywords: Answer sets, GIS, Planning.
use an extension of ordered disjunction programs. Ordered disjunction is an approach based on answer sets that allows us to represent alternative, ranked options for a problem. Moreover, we give a brief overview of two real applications of extended ordered programs in two different domains. The first one is in planning: evacuation planning. The second one is in argumentation: organ transplantation. In particular, we show the role of negated negative literals in extended ordered programs to obtain the preferred solution of each application
mantic contents in ASP to add planning capabilities to a Geographical Information System. Nowadays, cr-rules are used to restore the consistency of a program giving the diagnosis of possible causes of failure in a plan. However, in this paper we propose to use cr-rules to obtain an alternative plan in case of the ideal plan fails, i.e., we give an additional use for cr-rules. In particular, we show the use of cr-rules in a situation related to the risk zone of volcano Popocatepetl. We show an example about how we can obtain alternative evacuation routes, using cr-rules.
Keywords: Answer sets, GIS, Planning.