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Geographic signatures for semantic retrieval

David S. Batista, Mário J. Silva, Francisco M. Couto, Bibek Behera
2010 Proceedings of the 6th Workshop on Geographic Information Retrieval - GIR '10  
A signature can be used in multiple GIR applications, such as in building a geographic index for a document collection.  ...  However, sometimes a single scope is too restrictive and insufficient for capturing the geographic semantics of a document.  ...  Our proposal for disambiguating an extracted geographical reference in a document is to select the concepts that maximize the semantic similarity within the geographic signature to return, i.e. the concepts  ... 
doi:10.1145/1722080.1722104 dblp:conf/gir/BatistaSCB10 fatcat:a7pbkek6cbhqja67sgqhyskrs4

An Efficient Approach for Geo-Multimedia Cross-Modal Retrieval

Lei Zhu, Jun Long, Chengyuan Zhang, Weiren Yu, Xinpan Yuan, Longzhi Sun
2019 IEEE Access  
A novel framework for geo-multimedia cross-modal retrieval is proposed, which includes multi-modal feature extraction, cross-modal semantic space mapping, geo-multimedia spatial index and cross-modal semantic  ...  In this paper, we propose a novel type of cross-modal multimedia retrieval, called geo-multimedia cross-modal retrieval, which aims to find a set of geo-multimedia objects according to geographical distance  ...  It is a combination of R-Tree and signature files. The semantic representations of geo-multimedia objects are stored in the tree nodes and the geographical space is partitioned by MBR.  ... 
doi:10.1109/access.2019.2940055 fatcat:xhhjgegdkfb4vjyk7lsquo2ws4

Semantic signatures for large-scale visual localization

Li Weng, Valérie Gouet-Brunet, Bahman Soheilian
2020 Multimedia tools and applications  
Several metrics and protocols are proposed for signature comparison and retrieval. They illustrate different trade-offs between accuracy and complexity.  ...  A novel descriptor scheme called "semantic signature" is proposed to summarize this information. A semantic signature consists of type and angle information of visible objects at a spatial location.  ...  A database of semantic signatures can be built from existing data sources, such as geographic information systems.  ... 
doi:10.1007/s11042-020-08992-6 fatcat:gs3or3ajlncqznnc5eaphigl6q

Formalizing Semantic Spaces For Information Access

Sara Irina Fabrikant, Barbara P. Buttenfield
2001 Annals of the Association of American Geographers  
Graphic depiction of database content (or the database "semantics") can be based on a spatial or even a geographic metaphor.  ...  Three spatial frames of reference are presented to formalize and visualize semantic spatialized views: geographic space, cognitive space, and Benediktine space.  ...  Thanks are also due to Helen Couclelis and to André Skupin for discussion, brainstorming, and debate.  ... 
doi:10.1111/0004-5608.00242 fatcat:iouiwhirezhbdjo72u6tzpwzqi

Thematic signatures for cleansing and enriching place-related linked data

Benjamin Adams, Krzysztof Janowicz
2015 International Journal of Geographical Information Science  
or geographic information retrieval systems.  ...  For instance, in addition to information about events, actors, and objects, DBpedia contains data about hundreds of thousands of places from Wikipedia and publishes it as Linked Data.  ...  Such inter-type similarities are not only relevant for location estimation but also for semantics-based geographic information retrieval.  ... 
doi:10.1080/13658816.2014.989855 fatcat:zwktyofidfby3n5yta2w3d3ppe

An Efficient Approach for Geo-Multimedia Cross-Modal Retrieval [article]

Lei Zhu, Jun Long, Chengyuan Zhang, Ruipeng Chen, Xinpan Yuan, Zhan Yang
2018 arXiv   pre-print
a common semantic representation space for cross-modal semantic similarity measurement.  ...  In this paper, we propose a novel type of cross-modal multimedia retrieval called geo-multimedia cross-modal retrieval which aims to search out a set of geo-multimedia objects based on geographical distance  ...  For the ith object in M BR o i , its signature is denoted as S i = H SIG (o i .M I ), where H SIG (.) is a hashing function which is used to generate a signature from a semantic representation vector of  ... 
arXiv:1808.06277v1 fatcat:l7ifzlmf75dh7lwvz7xzwo6ium

Semantic Image Based Geolocation Given a Map [article]

Arsalan Mousavian, Jana Kosecka
2016 arXiv   pre-print
Most successful appearance based methods typically rely on a large database of views endowed with local or global image descriptors and strive to retrieve the views of the same location.  ...  The problem visual place recognition is commonly used strategy for localization.  ...  Government is authorized to reproduce and distribute reprints for Governmental purposes notwithstanding any copyright annotation thereon.  ... 
arXiv:1609.00278v1 fatcat:ermj7t5lorhulccpachqszbnba

Alike Scene Retrieval from Land-Cover Products Based on the Label Co-Occurrence Matrix (LCM) †

Jun Liu, Bin Luo, Qianqing Qin, Guopeng Yang
2017 Remote Sensing  
Finally, by combining the signatures in the base signature library, the user can acquire the retrieval result faster .  ...  In this study, we built a base signature library for the National Land Cover Database (NLCD) for 2006 [31, 32] . The library consisted of the signature of every base block (100 × 100 pixels).  ...  Determining the Signature of the Candidate Scene by Combining the Signatures in the Base Signature Library In contrast to the traditional retrieval systems (for which the reference scene can only be of  ... 
doi:10.3390/rs9090912 fatcat:3im2kc5j35hshor6wkq2slyt5u

Semantically guided location recognition for outdoors scenes

Arsalan Mousavian, Jana Kosecka, Jyh-Ming Lien
2015 2015 IEEE International Conference on Robotics and Automation (ICRA)  
Existing techniques use either local features or (semi)-global image signatures and consider the retrieval either in the context of topological mapping or loop closure detection.  ...  We also demonstrate additional capability of identifying individual buildings and estimating their extent in images, providing the essential building block for sub-sequent geo-location.  ...  Government is authorized to reproduce and distribute reprints for Governmental purposes notwithstanding any copyright annotation thereon.  ... 
doi:10.1109/icra.2015.7139877 dblp:conf/icra/MousavianKL15 fatcat:2rccpkxftvbr7dmwxwq42s4qee

Spatial Cloud Detection and Retrieval System for Satellite Images

Noureldin, Ayman Nasr, Motaz ElSaban, Hoda Onsi
2012 International Journal of Advanced Computer Science and Applications  
system (SCDRS) that introduce a complete framework for specific semantic retrieval system.  ...  While there are many approaches that deal with different semantic meaning, there are rarely approaches that deal specifically with cloud detection and retrieval.  ...  RESULTS ANALYSIS For our semantic concept which is cloud; first we have used two categories of polygons shapes, one used for building cloud signature database and the other is tied with each input scene  ... 
doi:10.14569/ijacsa.2012.031235 fatcat:uz7vserfpnezrj374kh7uozgme

Correlated Networks for Content Based Image Retrieval

Aun Irtaza, M. Arfan Jaffar, Eisa Aleisa
2013 International Journal of Computational Intelligence Systems  
For measuring the similarity, Pearson correlation is used as a distance measure; and for retrieving the semantically similar images in response of query images, Neural Network based architecture for content  ...  how they retrieve the semantically similar images in response of a query image.  ...  Overview of technique We perform two types of retrievals from signature repository for any query image.  ... 
doi:10.1080/18756891.2013.823005 fatcat:7aqneqtwlffnrbi6fkx4sdnise

What you are is when you are

Mao Ye, Krzysztof Janowicz, Christoph Mülligann, Wang-Chien Lee
2011 Proceedings of the 19th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems - GIS '11  
Feature types play a crucial role in understanding and analyzing geographic information.  ...  While feature types also underlie most Location-Based Services (LBS), assigning a consistent typing schema for Points Of Interest (POI) across different data sets is challenging.  ...  Together with our work on Spatial-Semantic Interaction [24] , we aim at introducing Semantic Signatures as analogy to spectral signatures from remote sensing.  ... 
doi:10.1145/2093973.2093989 dblp:conf/gis/YeJML11 fatcat:3o4qduragvh2hlcmrrtncz7bdy

Building a Geographical Ontology for the Nile River

Enas M.F.ElHouby, Ahmed M. D. E. Hassanein
2014 International Journal of Computer Applications  
It will enable search engine to perform a spatially aware search with providing support for query expansion and relevance ranking which will result in the retrieval of relevant web resources.  ...  In this research the full model of the Nile River geographical ontology has been developed to meet the needs of the recognition of the terminologies and the semantic relationships between geographical  ...  Ontology, which plays a key role in the semantic web, offers an advanced approach for managing, retrieving and processing information.  ... 
doi:10.5120/15202-3591 fatcat:zm3yiyeevrahreh43fjh3jypmy

Classical and Probabilistic Information Retrieval Techniques: An Audit

Qaiser Abbas
2021 Lahore Garrison University research journal of computer science and information technology  
Each of these models usually are used for evaluating the connection between the question and the retrievable documents.  ...  The incredible increase in information resources on the Internet formulates the information retrieval procedure, a monotonous and complicated task for users.  ...  Geographic Information Retrieval Recovery of geographical information (GIR) improves the retrieval of geographical information.  ... 
doi:10.54692/lgurjcsit.2021.0503221 fatcat:z5becjxpdvdzhabyixmx6pfjl4

Modeling and Querying Moving Objects with Social Relationships

Hengcai Zhang, Feng Lu, Jianqiu Xu
2016 ISPRS International Journal of Geo-Information  
space and social relationships for mass moving objects.  ...  This paper combines moving-object database and social network systems and presents a novel data model called Geo-Social-Moving (GSM) that enables the unified management of trajectories, underlying geographical  ...  We use signature α × β → δ to define operation signatures and semantics.  ... 
doi:10.3390/ijgi5070121 fatcat:jvlypenlv5fh3oz4ylyuvlbdhy
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