نتایج جستجو برای: spark

تعداد نتایج: 8455  

2013
G. Lakshmi K. Rajendar J. Pratap

The aim of this project is to introduce Spark Clouds, which integrate spark lines into a tag cloud to convey trends between multiple tag clouds. Spark Clouds ability is to show trends compares favorably to the alternative visualizations. In the Existing System, Tag clouds are used to display the relative tag frequency, popularity, or importance by font size. They serve as a visual summary of do...

2014
Hua Wang Bin Wu Shuai Yang Bai Wang Yang Liu

Decision tree is one of the most widely used classification methods. For massive data processing, MapReduce is a good choice. Whereas, MapReduce is not suitable for iterative algorithms. The programming model of Spark is proposed as a memory-based framework that is fit for iterative algorithms and interactive data mining. In this paper, C4.5 is implemented on both MapReduce and Spark. The resul...

2017
Shelly Grossman Sara Cohen Shachar Itzhaky Noam Rinetzky Shmuel Sagiv

Apache Spark is a popular framework for writing large scale data processing applications. Our long term goal is to develop automatic tools for reasoning about Spark programs. This is challenging because Spark programs combine database-like relational algebraic operations and aggregate operations, corresponding to (nested) loops, with User Defined Functions (UDFs). In this paper, we present a no...

2016
Shelly Grossman Sara Cohen Shachar Itzhaky Noam Rinetzky Mooly Sagiv

Spark is a popular framework for writing large scale data processing applications. Our goal is to develop tools for reasoning about Spark programs. This is challenging because Spark programs combine database-like relational algebraic operations and aggregate operations with User Defined Functions (UDF s). We present the first technique for verifying the equivalence of Spark programs. We model S...

Journal: :CoRR 2015
Oren Segal Philip Colangelo Nasibeh Nasiri Zhuo Qian Martin Margala

We introduce SparkCL, an open source unified programming framework based on Java, OpenCL and the Apache Spark framework. The motivation behind this work is to bring unconventional compute cores such as FPGAs/GPUs/APUs/DSPs and future core types into mainstream programming use. The framework allows equal treatment of different computing devices under the Spark framework and introduces the abilit...

Journal: :PVLDB 2017
Michael J. Anderson Shaden Smith Narayanan Sundaram Mihai Capota Zheguang Zhao Subramanya Dulloor Nadathur Satish Theodore L. Willke

Apache Spark is a popular framework for data analytics with attractive features such as fault tolerance and interoperability with the Hadoop ecosystem. Unfortunately, many analytics operations in Spark are an order of magnitude or more slower compared to native implementations written with high performance computing tools such as MPI. There is a need to bridge the performance gap while retainin...

2015
Jie Huang

Spark is gaining wide industry adoption due to its superior performance, simple interfaces, and a rich library for analysis and calculation. Like many projects in the big data ecosystem, Spark runs on the Java Virtual Machine (JVM). Because Spark can store large amounts of data in memory, it has a major reliance on Java’s memory management and garbage collection (GC). New initiatives like Proje...

Journal: :PVLDB 2015
Juwei Shi Yunjie Qiu Umar Farooq Minhas Limei Jiao Chen Wang Berthold Reinwald Fatma Özcan

MapReduce and Spark are two very popular open source cluster computing frameworks for large scale data analytics. These frameworks hide the complexity of task parallelism and fault-tolerance, by exposing a simple programming API to users. In this paper, we evaluate the major architectural components in MapReduce and Spark frameworks including: shuffle, execution model, and caching, by using a s...

1999
David B. Kittelson Megan Arnold Winthrop F. Watts

.........................................................................................................................3 INTRODUCTION ................................................................................................................5 DIESEL ENGINE TECHNOLOGY AND EMISSION REGULATIONS .............................7 PHYSICAL AND CHEMICAL NATURE OF DIESEL AEROSOL ......................

2010
B Peterson

The spark energy transferred under the highly stratified conditions during late injection in a spray-guided spark-ignition direct-injection (SG-SIDI) engine is not well characterized. The impact of high pressures, temperatures, velocities, and variations in local fuel concentration along with temporal and/or spatial variations on spark performance must be better characterized. Previous spark ig...

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