achieving high throughput with array processing

... in Figure Array (microphones 1, 2, 3), array (microphones 1, 2, 4), array (microphones 1, 3, 4), array (microphones 2, 3, 4), and array (microphones 1, 2, 3, 4) are used as individual arrays, and ... multiple-microphone processing using a single decoder (i.e., single-decoder processing) is proposed in Section 4.2 In Section 4.3, we combine multiple-decoder processing or single-decoder processing with the ... single-microphone array, because only microphone -array processing may yield estimation error We integrated a set of the delay-and-sum beamforming with multiple- or single-decoder processings In...

Ngày tải lên: 22/06/2014, 23:20

... implementation that offers much promise with disease detection and management Target molecules Initially the COPD specific microarray chip would be arrayed with antibodies, oligonucleotides and ... microarray chip onto which ligands to the biomolecular components of the COPD-specific molecular fingerprint are arrayed (Figure 4) This diagnostic test examining levels of the biomolecules within ... working COPD specific microarray chip The principles of SPR, when combined with the use of an imaging step (SPR imaging; SPRi), allows a gold surface to be prepared in an array format providing the...

Ngày tải lên: 12/08/2014, 14:20

... scalar sensor array case in which a plane array with large aperture is required to achieve the same goal Analytical results on source resolution using vector sensor arrays and comparisons with their ... A1, A2 hold uniformly on the array: A3: Plane wave across the array: In addition to A1, for each source the array size dA has to be much smaller than the source to array distance, so that the ... MSAES can increase without bound with decreasing source angular separation for CR sources with the same ellipticity and spin direction, but remarkably it remains bounded for sources with different...

Ngày tải lên: 08/11/2013, 12:15

... across the array For example, in GSM the inverse signal bandwidth is µs, whereas the travel time across the array is, at most, a few ns This is the narrowband assumption in array processing The ... m-dimensional vector, called the array response vector defined as a(θl ) = [a1 (θl ) a2 (θl ) am (θl )]T where (·)T denotes matrix transpose In array processing literature the array vector a(θ ) is also ... between the array and the temporal manifold TABLE 68.2 The Duality Between the Array and the Time Manifold Manifold Indexed by: Characterizes: Array Time Angle θ Delay τ Antenna array response...

Ngày tải lên: 16/12/2013, 04:15

... enhancement opportunities via array processing algorithms Array processing algorithms are typically realized through the implementation of narrowband or broadband arrays These two arrays are discussed ... Multisensor arrays typically achieve this adjustment through the use of an array processing algorithm Most applications of multisensor arrays involve a fixed pattern of transducers, such as a linear array ... Look-Direction Constraint • Pilot Signal Constraint 30.4 Broadband Arrays 30.5 Inverse Formulations for Array Processing Narrowband Arrays • Broadband Arrays • Row-Action Projection Method 30.6 Simulation...

Ngày tải lên: 25/12/2013, 06:16

... in size, simple processing using a single processor with the capability of processing with a speed of megabyte/second would take 120 days and nights of processing time If this processing time ... operations) Compared with a single processing element, an 8 -processing element machine would attain a speed up of not but somewhere around 3, even though the processing element cost is times higher 1.3 ... but needs to work with a large volume of data 1.3 Parallel Query Processing: Objectives 1.3 PARALLEL QUERY PROCESSING: OBJECTIVES The primary objective of parallel database processing is to gain...

Ngày tải lên: 21/01/2014, 18:20

... divisor with the high skew remains quite steady compared with the one without skew This indicates that skew can adversely affect the performance to a great extent For example, the divisor without ... each processing element may not be balanced, and this is called processing skew Note that even when data skew may not exist at the start of the processing, skew may exist at a later stage of processing ... distributions Table 2.2 Divisors (with vs without skew) N 16 32 64 128 256 Divisor without skew 16 32 64 128 256 2.08 2.72 3.38 4.06 4.74 5.43 6.12 Divisor with skew distribution, jRj is divided...

Ngày tải lên: 21/01/2014, 18:20

... both data skew and processing skew degrees are high OR no skew, then use parallel partitioned sort In this chapter, three parallel algorithms for processing GroupBy queries in high- performance ... records and examine whether it is matched with Ed/2 In this case, Ed/11 found a match with Health/11 The same is the case with Joanna/2, which found a match with CompSc/2 Other records in table R ... when a high degree of skewness is involved As a rule of thumb for selecting an appropriate parallel sorting algorithm, the following rules can be adopted: Ž If processing skew degree is high, ...

Ngày tải lên: 21/01/2014, 18:20

... 6.2.3 Early GroupBy with Replication Scheme The early GroupBy with replication scheme is similar to the early GroupBy with partitioning scheme The similarity is due to the group-by processing to be ... of the most important operations in high- performance query processing The join operation itself is one of the most expensive operations in relational query processing, and hence the parallelizing ... simplicity of description and without loss of generality, we consider queries that involve only one aggregate function and a single join High- Performance Parallel Database Processing and Grid Databases,...

Ngày tải lên: 21/01/2014, 18:20

... highly influenced by common practices of array/ set comparison in programming An array can be compared with another array by evaluating each pair of elements from the same position of the two arrays ... order or the semantic of the elements Arrays are one-dimensional arrays with variable length, and they allow duplicates The main difference between a list and an array is in the method used to store ... nil List or array intersection is not yet defined by ODMG, and hence the semantics of list /array intersection is still unclear One simple way to deal with collections of type list or array is done...

Ngày tải lên: 21/01/2014, 18:20

... Scheduling and Optimization processing node P5 processing node R4 P3 processing node processing node processing node P2 P4 processing node R2 R3 processing node P1 processing node R1 processing node Figure ... and ð p for join operation processing node P2 processing node processing node P1 P5 processing node R4 P3 R1 processing node processing node R2 P4 processing node R3 processing node Figure 9.13 ... the processing nodes with medium to high level loads will be reallocated to lightly loaded nodes (v) Subquery Partition: When there is no high load of processing nodes across the system, a processing...

Ngày tải lên: 21/01/2014, 18:20

... The process is activated by any high load processing node when there exists a low load processing node For each subquery Qi in the ready queue, For each low load processing node j, Calculate cost ... without actually being executed, must be avoided 9.6.3 Partition The partition process is invoked by a medium load processing node when there is at least one low load processing node but no high ... request message to processing node si, If an accepted message is received, Qi is migrated to node si, Else Qi is marked as non-migratable If processing node load level is still high and there is...

Ngày tải lên: 21/01/2014, 18:20

... Protocols, e.g GridFTP Figure 13.1 Grid database architecture with high- level replication management service databases interact with each other with the help of Grid middleware The Grid middleware provides ... the comparison of the Grid-ACP with centralized and distributed recovery models Correctness of the recovery protocol is also given High- Performance Parallel Database Processing and Grid Databases, ... GT j precedes and conflicts with GTi at data site DBi This contradicts with proposition 11.1 Thus GT j cannot precede GTi at DBi Suppose GT j precedes and conflicts with GTi at any other data...

Ngày tải lên: 21/01/2014, 18:20

... partial sums Thus the total processing time is that required for adding together n C m values Denoting by T r / the total processing time for processing r values, this processing time may be written ... tools used for Business Intelligence is Online Analytic Processing (OLAP) Unlike Online Transaction Processing (OLTP), which is mostly concerned with updates, OLAP focuses mainly on analysis The amount ... data level is highly aggregated While OLTP focuses largely on current data, OLAP often must involve a significant degree of temporal and historical data processing Because of its high data intensity...

Ngày tải lên: 21/01/2014, 18:20

... parallelism focuses on how the target results, which are the output of the processing, can be parallelized during the processing stage without having 16.2 Data Mining: A Brief Overview 439 produced any ... wsize D This means that all transactions within the 3-days window are grouped into one, and patterns will be derived only among windows, not within a window With wsize D 3, two transactions from ... within a cluster because they are “similar” to each other, without necessarily knowing what their common properties are Most important is the fact that if a record is clustered in a cluster with...

Ngày tải lên: 21/01/2014, 18:20

... The sublevel processing is also applied to the subsequent levels For example, Figure 17.17 shows the processing of level 3a To highlight that a node is currently being processed within a sublevel, ... materials from [9] with kind permission from Elsevier, from [5,8] with kind permission from IEEE Section 6.2 contains materials from [5] with kind permission from IEEE, and from [4] with kind permission ... decision tree is built with a serial decision tree algorithm b Assuming that there are three available processors, demonstrate with a walk-through how a decision tree is built with a data parallelism...

Ngày tải lên: 26/01/2014, 15:20

... Load imbalance, 133–134 Load information exchange, 273–275 high load processing node, 273 low load processing node, 273 medium load processing node, 273 INDEX Load skew in single-table queries, ... 275 Dynamic Query Processing, 271–272 Early distribution scheme, GroupBy-Before-Join query processing, 143–144 distribution phase, 143 GroupBy-Join phase, 143–144 Early GroupBy with partitioning ... Parallel Processing (ICPP), pp 365–372, 2004 Jin, R., Yang, G., and Agrawal, G., “Parallel Data Cube Construction: Algorithms, Theoretical Analysis, and Experimental Evaluation”, Proceedings of High...

Ngày tải lên: 26/01/2014, 15:20

... Load imbalance, 133–134 Load information exchange, 273–275 high load processing node, 273 low load processing node, 273 medium load processing node, 273 INDEX Load skew in single-table queries, ... 275 Dynamic Query Processing, 271–272 Early distribution scheme, GroupBy-Before-Join query processing, 143–144 distribution phase, 143 GroupBy-Join phase, 143–144 Early GroupBy with partitioning ... Parallel Processing (ICPP), pp 365–372, 2004 Jin, R., Yang, G., and Agrawal, G., “Parallel Data Cube Construction: Algorithms, Theoretical Analysis, and Experimental Evaluation”, Proceedings of High...

Ngày tải lên: 26/01/2014, 15:20

... and outcomes, are highly correlated with GDP There are two possible main channels through which GDP can affect spending efficiency First, a higher GDP is associated with a higher cost of service ... salary levels are highly correlated with GDP, which makes it hard to distinguish between the effect on efficiency of salary levels, GDP, and other factors that are highly correlated with GDP (Table ... than other G7 and OECD countries highly urbanized Luxembourg Somewhat surprisingly, the data not provide evidence for a higher cost of service delivery in countries with large areas which are relatively...

Ngày tải lên: 14/02/2014, 09:20

... reductions with longer-term strategic cost initiatives will leave banks much better positioned for future high performance This approach can yield cost reductions up to 20 percent, help variabilize a high ... and experience with European financial services companies Of course, banks' cost distribution varies widely from region to region, and even within regions But the point is clear: high- performance ... world's most successful companies, Accenture collaborates with clients to help them become highperformance businesses and governments With more than 180,000 people in 49 countries, the company...

Ngày tải lên: 16/02/2014, 11:20