Tools
Sorted by:
Try your query at:
 |
 |
 |
 |
 |
 |
Results 1 - 10
of
38
Analysis of Geographic Queries in a Search Engine Log
, 2008
"... Geography is becoming increasingly important in web search. Search engines can often return better results to users by analyzing features such as user location or geographic terms in web pages and user queries. This is also of great commercial value as it enables location specific advertising and im ..."
Abstract
-
Cited by 30 (0 self)
- Add to MetaCart
of geographic search (geo) queries based on a manual examination of several thousand queries. Based on these observations, we build a classifier that separates the trace into geo and non-geo queries. We then investigate the properties of geo queries in more detail, and relate them to web sites and users
Re-Ranking for Geo-Relevance With Non-Contextual Heuristics at GeoCLEF 2007
"... Abstract. Geographic Information Retrieval (GIR) in an attempt to improve relevance by taking geographic information in textual documents into account. We describe out experiments carried out at the GeoCLEF 2007 evaluation [1] that investigate further the role of geo-filtering based re-ranking and q ..."
Abstract
- Add to MetaCart
-ranking and query expansion with geographic terms. Our main findings are that manual query expansion with geo-terms is moderately effective and simple automatic geo-filtering based reranking suffers from robustness across queries. 1
DESIGN OF A SPATIAL DATA WAREHOUSE BASED ON AN INTEGRATED NON- SPATIAL DATABASE AND GEO-SPATIAL INFORMATION
"... Accessing multiple, distributed, heterogeneous and autonomous information sources storing spatial or non-spatial data and integration of those data sources has been an important issue as distributed data processing and management became available with today’s technology. Common solutions to data int ..."
Abstract
- Add to MetaCart
built surrounding DW for efficient data analysis. Main processes to construct a spatial data warehouse are; collecting data from information sources (data warehousing), organizing data in a geo-spatial data store (warehouse organization) and querying and visualizing data. This study covers
Window query processing in highly dynamic geo-sensor networks: Issues and solutions
- In NSF Workshop on Geo Sensor Network (GSN’03
"... Wireless sensor networks have recently received a lot of attention due to a wide range of applications such as object tracking, environmental monitoring, warehouse inventory, and health care [15, 29]. In these applications, physical data is continuously collected by the sensor nodes in order to faci ..."
Abstract
-
Cited by 5 (2 self)
- Add to MetaCart
and the dynamic characteristics of sensor networks. In this paper, we investigate how to process a window query in highly dynamic GeoSensor networks and propose several innovative ideas on enabling techniques. The networks considered are highly dynamic because the sensor nodes can move around (by self
Mapping Geographic Coverage of the Web
"... In this paper, we describe a methodology to estimate the geographic coverage of the web without the need for secondary knowledge or complex geo-tagging. This is achieved by randomly selecting toponyms from the Ordnance Survey 50K gazetteer to create search queries and thus gather document counts fro ..."
Abstract
- Add to MetaCart
In this paper, we describe a methodology to estimate the geographic coverage of the web without the need for secondary knowledge or complex geo-tagging. This is achieved by randomly selecting toponyms from the Ordnance Survey 50K gazetteer to create search queries and thus gather document counts
Geographic intention and modification in web search
- International Journal of Geographical Information Science
, 2007
"... Web searchers signal their geographic intent by using place-names in search queries. They also indicate their flexibility about geographic specificity by reformulating their queries. By examining this data we can learn to understand web searcher flexibility with respect to geographic intent. We exam ..."
Abstract
-
Cited by 17 (2 self)
- Add to MetaCart
rewriting, with manual relevance judgements of geo-modified queries. We find geo-specification in 12.7 % of user query rewrites in search sessions, and show the breakdown into sub-classes such as same-city, same-state, same-country and different-country. We also measure the dependence between US
Spatial Databases, The Final Frontier
, 1995
"... This paper is divided into two parts. In Section 1 we discuss five different geomatic data models. All of them are intentional, i.e. they give a finite representation of the mostly infinite and even non-enumerable 2 set of points of the spatial objects that are described by the database. In the Ras ..."
Abstract
-
Cited by 27 (1 self)
- Add to MetaCart
This paper is divided into two parts. In Section 1 we discuss five different geomatic data models. All of them are intentional, i.e. they give a finite representation of the mostly infinite and even non-enumerable 2 set of points of the spatial objects that are described by the database
SUMMARY
"... Usability has become an important issue for improving web design. However, specific studies on determining elements for geo-web usability are almost non-existent. Therefore, this paper describes our first approach to uncover the main elements of geo-web-usability. Three main elements have been ident ..."
Abstract
- Add to MetaCart
Usability has become an important issue for improving web design. However, specific studies on determining elements for geo-web usability are almost non-existent. Therefore, this paper describes our first approach to uncover the main elements of geo-web-usability. Three main elements have been
The University of Lisbon at GeoCLEF 2008
- GeoCLEF 2008, CLEF 2008
"... This paper reports the participation of the XLDB team from the University of Lisbon at the 2008 GeoCLEF task. We focused on developing a better text annotation tool for geo-parsing the documents, handling both explicit geographic evidence (as given by placenames) and im-plicit geographic evidence (a ..."
Abstract
-
Cited by 5 (1 self)
- Add to MetaCart
(as given by monuments, for example). The query processing and geographic ranking approaches were redesigned to handle thematic and geographic criteria of each search in a non-segregation way. We detail the GIR system, describe the optimisation procedure that preceded the run generation, and dissect
Integrating GIS and Imagery through XML-based Information Mediation
- In P. Agouris and A. Stefanidis (Eds.) Integrated Spatial Databases: Digital Images and GIS, Lecture Notes in Computer Science
, 1999
"... this paper, we propose a mediation-based approach for integrating information from two types of information sources, viz. spatial information systems such as GIS and searchable databases of geo-referenced imagery. As in [14,19], our goal is to enable users to issue a single query in order to search ..."
Abstract
-
Cited by 22 (5 self)
- Add to MetaCart
this paper, we propose a mediation-based approach for integrating information from two types of information sources, viz. spatial information systems such as GIS and searchable databases of geo-referenced imagery. As in [14,19], our goal is to enable users to issue a single query in order to search
Results 1 - 10
of
38
