Venkatesh Raghavan

ORCID: 0000-0003-1908-5940
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About
Contact & Profiles
Research Areas
  • Advanced Database Systems and Queries
  • Data Management and Algorithms
  • Geographic Information Systems Studies
  • Geological Modeling and Analysis
  • Advanced Computational Techniques and Applications
  • Remote Sensing and Land Use
  • Image and Signal Denoising Methods
  • 3D Modeling in Geospatial Applications
  • Synthetic Aperture Radar (SAR) Applications and Techniques
  • Distributed systems and fault tolerance
  • Data Mining Algorithms and Applications
  • earthquake and tectonic studies
  • Automated Road and Building Extraction
  • Advanced Data Compression Techniques
  • High voltage insulation and dielectric phenomena
  • Land Use and Ecosystem Services
  • Data Quality and Management
  • Service-Oriented Architecture and Web Services
  • Distributed and Parallel Computing Systems
  • Landslides and related hazards
  • Brain Tumor Detection and Classification
  • Advanced Data Storage Technologies
  • Advanced Image Processing Techniques
  • Soil and Land Suitability Analysis
  • Power Transformer Diagnostics and Insulation

Osaka Metropolitan University
2023-2024

Tokyo Metropolitan University
2023-2024

Osaka City University
2000-2021

Geological Survey of Japan
2015

National Institute of Advanced Industrial Science and Technology
2015

Pivotal Labs
2014-2015

St. Joseph's Institute of Technology
2014

DELL (United States)
2012

Worcester Polytechnic Institute
2005-2011

College for Creative Studies
2006

The performance of analytical query processing in data management systems depends primarily on the capabilities system's optimizer. Increased volumes and heightened interest complex queries have prompted Pivotal to build a new

10.1145/2588555.2595637 article EN 2014-06-18

AbstractAbstractAn optimal combination of mechanical means and microwave energy to break rock material could prove beneficial for space applications in terms large scale production drilling or removal processes. In the present paper, application low power pulses was used induce thermal cracks samples, before use breakage methods. The investigation is conducted with scope possible bound terrestrial applications. Experimental studies were carried out assess (∼150 W) susceptibility basaltic...

10.1179/174328606x101902 article EN Mining Technology Transactions of the Institutions of Mining and Metallurgy Section A 2006-03-01

Demand for enterprise data warehouse solutions to support real-time Online Transaction Processing (OLTP) queries as well long-running Analytical (OLAP) workloads is growing. Greenplum database traditionally known an OLAP system with limited ability process OLTP workloads. In this paper, we augment into a hybrid serve both and The challenge address here achieve goal while maintaining the ACID properties minimal performance overhead. effort, identify engineering bottlenecks such...

10.1145/3448016.3457562 article EN Proceedings of the 2022 International Conference on Management of Data 2021-06-09

Multi-criteria decision support (MCDS) is crucial in many business and web applications such as searches, B2B portals on-line commerce. Such MCDS need to report results early; soon they are being generated so that can react formulate competitive decisions near real-time. The ease expressing user preferences web-based has made Pareto-optimal (skyline) queries a popular class of queries. However, state-of-the-art techniques either focus on handling skylines single input sets (i.e., no joins)...

10.1109/icde.2010.5447928 article EN 2022 IEEE 38th International Conference on Data Engineering (ICDE) 2010-01-01

10.1007/s10278-014-9697-9 article EN Journal of Digital Imaging 2014-05-21

The need for deep convolutional neural network is increasing medical image classification because it provides good performance. This work elucidates the significance of in making effective detection clinical diseases by categorizing images an organized manner. Clinical are difficult to predict and interpret. To from images, Stochastic Multinomial Logarithmic (SML) based method proposed. effectively eliminate noise edge-boosting locally adapted space-variant filters first applied texture MRI,...

10.1080/13682199.2023.2183621 article EN The Imaging Science Journal 2023-03-06

In many business and consumer applications, queries have cardinality constraints. However, current database systems provide minimal support for assurance. Consequently, users must adopt a cumbersome trial-and-error approach to find that are close the original query but also attain desired cardinality. this demonstration, we present QRelX novel framework automatically generate alternate meet closeness criteria. employs an innovative space transformation strategy, proximity-based search...

10.1145/1807167.1807323 article EN 2010-06-06

Big Data analytics often include complex queries with similar or identical expressions, usually referred to as Common Table Expressions (CTEs). CTEs may be explicitly defined by users simplify query formulations, implicitly included in generated business intelligence tools, financial applications and decision support systems. In Massively Parallel Processing (MPP) database systems, pose new challenges due the distributed nature of processing, overwhelming volume underlying data scalability...

10.14778/2824032.2824068 article EN Proceedings of the VLDB Endowment 2015-08-01

Rapid urbanization can change local climate by increasing land surface temperature (LST), particularly in metropolitan regions. This study uses two decades of remote sensing data to investigate how urbanization-induced changes use/land cover (LULC) affect LST the Beijing Region, China. By focusing on key issue and its contributing variables through buffer zones, we determined influence across zones—core, transit, suburban areas. approach is crucial for identifying prioritizing each zone,...

10.3390/rs16234502 article EN cc-by Remote Sensing 2024-11-30

In Power system, the reliable power supply plays a vital role in Generation, Transmission and Distribution. It is necessary to facilitate uninterrupted by continuous monitoring of apparatus. this regard, prevention insulation failure becomes essential for functioning equipments. paper deterioration Insulation Insulators determined from analysis Partial Discharge signals. The signals are produced localized ionization within electrical field. Hence numerical Electric field can provide...

10.1109/icectech.2011.5941868 article EN 2011-04-01

Physical design for shared-nothing databases includes decisions regarding the placement of data across a cluster database servers. In particular, each table in distribution policy must be specified. general, choice affects performance query workloads significantly as individual queries may have to redistribute on-the-fly part execution. As is case with number other physical decisions, problem hard and poses substantial difficulties administrators. this paper, we present FINDER, tool that...

10.1109/icdew.2012.45 article EN 2012-04-01

Availability of a variety urban growth models make model selection to be an important factor in simulation studies. In this regard, comparative evaluation available helps choose suitable for the study area. Thus, we selected three open-source namely FUTURES, SLEUTH and MOLUSCE compare their simplest state provide guidance Colombo. The extent maps 1997, 2005, 2008, 2014 2019 derived from Landsat imageries were used calibration validation models. Models implemented with minimum required data...

10.52939/ijg.v17i3.1897 article EN International Journal of Geoinformatics 2021-06-01

A prototype online Spatial Information System for Geologic Modeling (SISGeM) has been developed. SISGeM successfully implemented by integrating the GIS and relational database management system (RDBMS) with Internet. The spatial data is carried out using Geographic Resource Analysis Support (GRASS) GIS. Online access to GRASS functions enabled basic framework of GRASSLinks interface. Several additional modules were incorporated into web interface tailor its present needs. PostgreSQL RDBMS...

10.6010/geoinformatics.14.63 article EN GEOINFORMATICS 2003-01-01

We demonstrate ProgXe, a practical approach to support Multi-Criteria Decision Support (MCDS) applications that need report results as they are being generated enable the user make competitive decisions. ProgXe transforms execution of MCDS queries involving skyline over joins be non-blocking by progressively generating early and often. The demonstration highlights key features our progressive framework optimizes for output generation by: (1) evaluating query at multiple levels abstraction,...

10.1145/1807167.1807300 article EN 2010-06-06

10.17491/jgsi/1989/340203 article EN Journal of the Geological Society of India 1989-08-01

10.1007/s12652-020-01741-5 article EN Journal of Ambient Intelligence and Humanized Computing 2020-02-20
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