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For SaaS applications, multi-tenant data storage can be mixed to make full use of storage resources, which makes the single tenant's data may be spread across multiple data nodes. For queries based on shard key, they can be located directly to the relevant nodes. However, for queries based on non-shard key, they need to implement a global parallel retrieval even if there are indices on the conditions...
Relevance search in heterogeneous information networks is a basic and crucial operation which is usually used in recommendation, clustering and anomaly detection. Nowadays most existing relevance search methods focus on objects in homogeneous information networks. In this paper, we propose a method to find the top-k most relevant objects to a specific one in heterogeneous networks. It is a two phase...
MapReduce is emerging as an important programming model for massive data processing. A key challenge in MapReduce environments is the ability to efficiently control resource allocation and task scheduling for achieving Service Level Objectives (SLOs) of MapReduce jobs. However, there are few effective task scheduling methods to guarantee MapReduce jobs' SLOs. Therefore, we address this challenge by...
With the tremendous growth of the Web, it has become a huge challenge for the single-process crawlers to locate the resources that are precise and relevant to some topics in an appropriate amount of time, so it is increasingly important to use the parallel crawler. However, due to the parallelism of crawlers, one headache problem we have to face is how to distribute the URLs to crawlers to make the...
In a variety of domains, the amount of information grows rapidly; new sources and types of information are proliferating. In recent years, the world-wide web information has been growing at a dramatic pace and might have become the most important information source for most people. In daily life, when people encounter some problems, they tend to retrieve the information from the Web search engines...
User interface modeling methods based on design pattern and code generation methods are hot points in software engineering research field in recent years. However, there is no unified standard description until now. As a result, it leads to the great insufficiency in using nested component of multiple interface design patterns to construct complex user interface; meanwhile it cannot meet the need...
Web has already become the richest information resource of the world. Web sources are open, dynamic, and autonomous. Evaluating and selecting high quality Web source is a key for the success of Web-based applications. Currently, most of the web source evaluation and selection are performed by Web experts. However, there are too many Web sources in any field, this process has proved to be very time...
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