Previous
Dimensional Insight BI Tool For Linux On ZSeries
White Papers This paper provides an overview of the Dimensional Insight business intelligence (BI) tool using Linux on zSeries. The paper then examines how effectively the Dimensional Insight tool runs on a Linux guest under z/VM with an average workload.
[September 28, 2004, 3:00]
Two Dimensional Airfoil Optimisation Using CFD In A Grid Computing Environment
White Papers In this paper, a two-dimensional airfoil shape optimization problem is investigated using CFD within a grid computing environment (GCE) implemented in Matlab. The feature-based parametric CAD tool ProEngineer is used for geometry modelling.
[November 16, 2004, 23:00]
Benefits Of A Multi-Dimensional Model
White Papers The zenith of this path to structure and order is the multi-dimensional model. Oracle's Online Analytical Processing (OLAP) multi-dimensional model is unique in the market place. Every organization knows they have rapidly expanding amounts of data.
[July 25, 2006, 3:16]
Redundant Bit Vectors For Quickly Searching High-Dimensional Regions
White Papers RBVs rely on three key ideas: approximate the high-dimensional regions/distributions as tightened hyperrectangles, partition the query space to store each item redundantly in an index and use bit vectors to store and search the index efficiently.
[June 2, 2006, 1:00]
On The Generation Of 2-Dimensional Index Workloads
White Papers We investigate this idea in the context of a widely-used and widely-studied indexing workload: range queries over 2-dimensional points. A large number of database index structures have been proposed over the last two decades, and little consensus...
[August 14, 2003, 0:00]
Two-Dimensional RLS OFDM Adaptive Array Antenna Using Signals Of Adjacent Subcarriers
White Papers This paper proposes a novel two-dimensional RLS OFDM adaptive array antenna for realizing faster weight determination. Post-FFT type orthogonal frequency division multiplexing (OFDM) adaptive array antenna can reduce the co-channel interference...
[October 21, 2004, 3:00]
An Adaptive Two-Dimensional Channel Estimator For Wireless OFDM With Application To Mobile DVB-T
White Papers The estimator consists of a two-dimensional Wiener filter which is implemented as a cascade of two one-dimensional filters. In this paper an adaptive channel estimator is proposed and investigated to improve the performance of the receiver for...
[April 11, 2007, 1:01]
Introduction To The Unified Dimensional Model (UDM)
White Papers The role of a Unified Dimensional Model (UDM) is to provide a bridge between the user and the data sources. This paper provides an introduction to the Unified Dimensional Model (UDM), including the basic end-user model, and a brief overview of the...
[March 7, 2005, 2:00]
Fully Dynamic 3-Dimensional Orthogonal Graph Drawing
White Papers In a 3-dimensional orthogonal drawing of a graph, vertices are mapped to grid points on a 3-dimensional rectangular integer lattice and edges are routed along integer grid lines. This paper presentS a technique that produces a 3D orthogonal drawing...
[December 24, 2003, 3:53]
Fast Packet Classification For Two-Dimensional Conflict-Free Filters
White Papers The destination-based forwarding can be thought of as one-dimensional packet classification. Routers can use packet classification to support advanced functions such as QoS routing, virtual private networks and access control.
[August 14, 2003, 16:19]
ArcGIS 3D Analyst: Three-Dimensional Visualization, Topographic Analysis, And Surface Creation
White Papers ESRI ArcGIS 3D Analyst.is an ArcGIS extension that provides advanced tools for three-dimensional visualization, analysis, and surface generation. D Analyst includes sophisticated tools for three-dimensional modeling and analysis such as viewshed...
[August 23, 2005, 6:00]
Multi-Dimensional Storage Virtualization
White Papers This paper describes the design, implementation and evaluation of a multi-dimensional storage virtualization system called Stonehenge, which is able to virtualize a cluster-based physical storage system along multiple dimensions, including...
[March 1, 2008, 0:02]
Improved MC-CDMA Reception Employing Two-Dimensional Decision-Feedback Pilot And Data Symbol Correction
White Papers The algorithm uses the two-dimensional structure of the MC-CDMA frame to estimate the equalization error. In this paper, an algorithm is presented that recovers to a large degree the performance degradation due to channel estimation and...
[February 17, 2006, 0:01]
Beamspace-Code Transmit Diversity For Two-Dimensional Spreading OFDM-CDM Systems
White Papers This paper presents a transmit diversity scheme that allocates space-time block codes (STBC) to beamspace and spreading codes for two-dimensional spreading orthogonal frequency-division multiplexing code-division multiplexing (OFDM-CDM) downlink...
[October 26, 2004, 3:00]
Multi-Dimensional Clustering: A New Data Layout Scheme In DB2
White Papers This paper describes the design and implementation of a new data layout scheme, called multi-dimensional clustering, in DB2 Universal Database Version 8. OLAP and data warehousing, process a table or tables in a database using a multi-dimensional...
[December 9, 2006, 0:00]
Ranking Interesting Subspaces For Clustering High Dimensional Data
White Papers However, traditional clustering algorithms often fail to detect meaningful clusters because of the high dimensional, inherently sparse feature space of most real-world data sets. The paper presents a pre-processing step for traditional clustering...
[January 9, 2008, 0:01]
Independence Is Good: Dependency-Based Histogram Synopses For High-Dimensional Data
White Papers Approximating the joint data distribution of a multi-dimensional data set through a compact and accurate histogram synopsis is a fundamental problem arising in numerous practical scenarios, including query optimization and approximate query...
[April 7, 2005, 3:00]
Declustering Two-Dimensional Datasets Over MEMS-Based Storage
White Papers However, prior optimal cost and data placement approaches for processing range queries over two-dimensional datasets do not consider this property. This is because disks cannot facilitate two-dimensional sequential access which is required by the...
[August 23, 2007, 1:00]
Architectural Implications Of Multi-Dimensional Scalability In Wireless Networks
White Papers This multi-dimensional scalability creates numerous challenges in the areas of network performance and management. Future wireless networks must be "Scalable" in multiple dimensions: number of nodes and subnets, diversity of node technologies and...
[August 23, 2007, 1:00]
Subspace Selection For Clustering High-Dimensional Data
White Papers In high-dimensional feature spaces traditional clustering algorithms tend to break down in terms of efficiency and quality. Nevertheless, the data sets often contain clusters which are hidden in various subspaces of the original feature space.
[April 28, 2007, 1:00]
