datastore queries and caching
Báo cáo khoa học: "Search in the Lost Sense of “Query”: Question Formulation in Web Search Queries and its Temporal Change" pptx
... from Q -queries and an increasing gap in click positions between Qqueries and Q -queries In addition, we also observe an upward trend for the overall incoming query traffic accounted for by Q -queries ... Quantifiers Ambiguous Total Results Characteristics of Q -queries Are Q -queries really questions? We examine 100 random queries from the least frequent Q -queries in our dataset Only two are false-positives: ... better), we observe improvements for both Q -queries and Q -queries over time (and the gap is shortening) However, the average click position for Q -queries is consistently higher in rank throughout...
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Báo cáo khoa học: "SEHANTICS OF TEHPORAL QUERIES AND TEHPORAL DATA" pot
... Tempera! Queries This section considers four types of queries Involving temporal data, and briefly outlines the capaDilites that a temporal knowledge model must have in order to understand and answer ... affect the way we think and talk about time such as day and night, the days of the wee~, etc McDermott [13] shows how his tempo~ al logic can describe periodic events, and Anderson [2] includes ... state-of-the-world on a given date (Query 4) or during an interval of time (Query 5) Understanding and answering these queries requires rules for deducing the situation at a given time, as a result of...
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Báo cáo hóa học: " Research Article Cooperative Coding and Caching for Streaming Data in Multihop Wireless Networks" ppt
... data segments, and we refer to it as Cooperative Coding and Caching (C ); compre for example Network Coding (NC) and no coding at all (Non-NC ) 3.1 Overview of Cooperative Coding and Caching 3.1.1 ... of M and B are M = N and B = 1, which are their lower bounds for valid schemes 2.2 Network-Coding-Based Caching: Superiority and Problems We now show that network coding, in particular, random ... concludes the paper and presents some future directions Preliminaries 2.1 Model and Notation We now give the a formal description of the system Our caching model is quite similar with the caching model...
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Advanced similarity queries and their application in data mining
... PhD candidature time, a very precious and memorable period of my life, in which there is an end and there is a beginning, in which there are happiness and joyfulness and also depression and sadness, ... datasets and is efficient and scalable with regard to both the dimensionality and the size of the input datasets Experimental studies on both synthetic and real-world datasets are conducted and presented ... previous methods significantly and answers RkNN queries in high-dimensional data spaces and of large values of k efficiently and effectively To the end, we show how the kNN join and RkNN query can be utilized...
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Design, analysis, and experimental verification of continuous media retrieval and caching strategies for network based multimedia services
... to clients Caching concerns the use of the cache to avoid delays and/ or overheads in accessing the origin There are two typical caching - memory caching and disk caching In memory caching, the ... video can be fully utilized [148, 149] On-demand caching and on-command caching This is a problem on when to cache the documents In the on-demand caching strategy [102], documents are cached ... the bandwidth and the space) only once for every interval and every stream, and therefore past interval-level caching algorithms clearly cannot handle the case of the variable retrieval bandwidth...
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Tài liệu NOTES AND QUERIES: A MEDIUM OF INTER-COMMUNICATION FOR LITERARY MEN, ARTISTS, ANTIQUARIES, GENEALOGISTS, ETC pdf
... daies old, and that is counted verie early and with the soonest The child of man thus untowardly borne, and who another day is to rule and command all other, loe how he lyeth bound hand and foot, ... skailes, and fleeces of wool The verie trunkes and stemmes of trees and plants, shee hath defended with bark and rind, yea, and the same sometime double against the injuries both of heat and cold: ... several Wills, and Funeral Certificates Survey, temp Philip and Mary, of the Manors of Crosthole, Landren, Landulph, Lightdurrant, Porpehan and Tynton, in Cornwall; Aylesbeare and Whytford, co...
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Báo cáo khoa học: "Parsing and Generation as Datalog Queries" doc
... the left, λx.λy.M is abbreviated to λxy.M, and α → β → γ stands for α → (β → γ) We refer the reader to Hindley, 1997 or Sørensen and Urzyczyn, 2006 for standard notions used in simply typed λ-calculus ... Det → (e→t)→(e→t)→t, N → e→t}) A rule that has A on the left-hand side and B1 , , Bn as right-hand side nonterminals has its left-hand side annotated with a well-formed λ-term M that has type ... Institute of Science and Technology Beeri, Catriel and Raghu Ramakrishnan 1991 On the power of magic Journal of Logic Programming 10, 255–299 Engelfriet, J and E M Schmidt 1977 IO and OI, part I The...
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Báo cáo khoa học: "Jigs and Lures: Associating Web Queries with Structured Entities" potx
... 1.00 High Island Hammock/Stand Combo high island hammocks 1.00 1.00 hammocks and stands 0.10 Table 3: Example query-product association scores for a random sample of five products Bold queries resulted ... Set Sample: uniform random sample of 100 queries from the unique queries in the one-month log; and (b) Query Bag Sample: weighted random sample, by query frequency, of 100 queries from the query ... International Conference on Acoustics, Speech and Signal Processing, pages 181–184 [Kurland and Lee2004] O Kurland and L Lee 2004 Corpus structure, language models, and ad-hoc information retrieval In...
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Expressing and Optimizing Sequence Queries in Database Systems pdf
... X.price < Y.price AND Y.price < Z.price AND Z.price < T.price ) OR ( X.price > 55 AND X.price < 57 AND Y.price > 55 AND Y.price < 57 AND Z.price > 55 AND Z.price < 57 AND T.price > 55 AND T.price < ... WHERE X.name=’IBM’ AND X.price > X.previous.price AND 30 < Y.price AND Y.price < 40 AND Z.price < Z.previous.price AND T.price > T.previous.price AND 35 < U.price AND U.price < 40 AND V.price < V.previous.price ... date AS (X, Y, Z, T, U) WHERE X.name=’IBM’ AND Y.price < X.price AND Z.price < Y.price AND 40 < Z.price < 50 AND Z.price < T.price AND T.price < 52 AND T.price < U.price GENERAL PREDICATES The...
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How to use Media Queries to optimize markup for Devices and Features
... media="handheld, all" /> Reference Rate Calculator http://designintellection.com/ratecalc/ Media queries = neat Media: Types & Features Types: all screen print handheld ... OR How to use media queries to optimize the same markup for different devices and features Reference The League of Moveable Type http://www.theleagueofmoveabletype.com/ ... device-aspect-ratio color color-index monochrome resolution scan grid Reference Media Queries http://www.w3.org/TR/css3-mediaqueries/ Detect mobile index.php
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Using SQL queries to insert update, delete, and view data
... transactions and commit data to the database • Create search conditions in SQL queries • Understand how to update and delete database records, and how to truncate tables • Learn how to create and use ... Learn how to create SQL queries that join multiple tables • Learn how to create nested SQL queries • Understand how to combine query results using set operators • Create and use database views ... Creating Nested Queries • • Used to select results based on the result of a query Consists of a main query and one or more subqueries – Main query: first query that appears in the SELECT command – Subquery...
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Evaluation and selectivity estimation of XML queries
... store and query XML data requires proper mapping methods to convert XML data and XML queries to relational data and SQL queries respectively The problem is solved by path index solutions and structural ... Fabric [32] and BLAS [25] DataGuides [38] and 1-Index [63] summarize raw paths starting from the root to node in an XML document These index structures not support branch queries and XML queries ... suffix queries However, for branch queries and simple queries involving the ancestor-descendant relationship, BLAS must decompose them into a set of suffix queries and carry out join operations to...
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Efficient processing of KNN and skyjoin queries
... points and keeping a window of candidate skyline points in memory When a data point is fetched and compared with the candidate skyline points it may: (a) be dominated by a candidate point and discarded; ... and present two simple and yet efficient indexing methods, the diagonal ordering technique [18] and the SA-tree [13] In addition, we extend the skyline computation to the skyjoin operation, and ... suggestion, guidance, and constant support His advice, insights and comments have helped me tremendously I am also thankful to Dr Cui Bin and Ms Xia Chenyi for their suggestion and help during the...
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Efficient search of general and or keyword queries in XML data
... Thus the original query can be easily broken down to smaller and simpler subqueries Those subqueries can be AND queries, OR queries, or queries only containing one keyword Different processing approaches ... Chapter Keyword Search Queries 24 VLDB AND ((XML AND views) OR (Jag AND Lakshmanan)) The query asks for any information containing ’VLDB’ as well as ’XML’ and ✷ ’views’, or ’Jag’ and ’Lakshmanan’ 4.2 ... 24 6.1 Pure AND Queries 48 6.2 CNF Queries 50 6.3 DNF Queries 52 6.4 Queries With Depth of ...
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Location dependent data caching with handover and replacement for mobile ad hoc networks
... node and the data server There are several advantages of using data caching: Data caching reduces bandwidth consumption, thereby decreasing network traffic and lessens network congestion Data caching ... tuning parameter used to vary the randomness; S and D are constants representing the mean values of speed and direction as n → ∞ ; and Sxn−1 and Dxn−1 are random variables from a Gaussian distribution ... 30 4.1 Random Waypoint Figure 4.1: Random Mobility Model randomly chooses a destination (waypoint) in the simulation area and a constant speed uniformly chosen between maximum(vmax ) and minimum...
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Research on smart caching and content sharing for mobile networks
... WiMAX and LTE 39 华 中 科 技 大 学 博 士 学 位 论 文 The ZigBee physical layer supports three frequency bands: a 2450 MHz band (with 16 channels), a 915 MHz band (with 10 channels) and a 868 MHz band ... system and CCN with adaptive streaming is a suitable solution for dynamic patients and physicians In VANET, motivated by the increasing demand for efficient and reliable information dissemination and ... works and their drawback (14) 2.2 Popularity Prediction and Cooperative Caching (PPCC) (15) 2.3 PPCC algorithm simulation and results (21) 2.4 Fine-Grained Popularity-based Caching...
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EMBEDDED LINUX SYSTEM DESIGN AND DEVELOPMENT.pdf
... Ⅲ Understand the embedded Linux development environment Ⅲ Understand and create Linux BSP for a hardware platform Ⅲ Understand the Linux model for embedded storage and write drivers and applications ... memory leaks and memory corruption in applications and drivers Ⅲ Learn methods to profile applications and the kernel Ⅲ Understand uCLinux architecture and its programming model Ⅲ Understand the embedded ... Ltd Ⅲ Windows, WinCE and Microsoft are registered trademarks and MS-DOS and DirectX are trademarks of Microsoft Corporation Ⅲ Solaris and Java are registered trademarks and ChorusOS is a trademark...
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09 Physical and Chemical Characteristics of DDGS revisions.
... during transport and handling – particle and ingredient segregation (separation) occurs when particles of different sizes and bulk densities are blended together and transported or handled Pellet ... Size, Bulk Density and pH Particle size and particle size uniformity of feed ingredients are important considerations of livestock and poultry nutritionists when selecting sources and determining ... Characteristics of U.S DDGS Physical and chemical characteristics of distiller’s dried grains with solubles (DDGS) vary among sources and can influence its feeding value and handling characteristics These...
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