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- 485 creator alan-demers.
- 485 creator fan-yang.
- 485 creator jayavel-shanmugasundaram.
- 485 creator johannes-gehrke.
- 485 creator nicholas-gerner.
- 485 creator nitin-gupta.
- 485 creator xin-qi.
- 485 type InProceedings.
- 485 label "A Unified Platform for Data Driven Web Applictions with Automatic Client-Server Partitioning".
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- 485 abstract "Data-driven web applications are structured into three tiers with different programming models at each tier. This division forces developers to manually partition application functionality across the tiers, resulting in complex logic, suboptimal partitioning, and expensive re-partitioning of applications.<br /><br /> In this paper, we introduce a unified platform for automatic partitioning of data-driven web applications. Our approach is based on Hilda, a high-level declarative programming language with a unified data and programming model for all the layers of the application. Based on run-time properties of the application, Hilda's run time system automatically partitions the application between the tiers to improve response time while adhering to memory or processing constraints at the clients. We evaluate our methodology with traces from a real application and with TPC-W, and our results show that automatic partitioning outperforms manual partitioning without the associated development overhead.".
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- 485 title "A Unified Platform for Data Driven Web Applictions with Automatic Client-Server Partitioning".
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- 495 creator ji-rong-wen.
- 495 creator ruihua-song.
- 495 creator zhicheng-dou.
- 495 type InProceedings.
- 495 label "A Large-scale Evaluation and Analysis of Personalized Search Strategies".
- 495 sameAs 495.
- 495 abstract "Although personalized search has been proposed for many years and many personalization strategies have been investigated, it is still unclear whether personalization is consistently effective on different queries for different users, and under different search contexts. In this paper, we study the problem and get some preliminary conclusions. We present a large-scale personalized search evaluation framework based on search logs and then evaluate five personalized search strategies (including two click-based and three profile-based ones) using 12-day MSN search logs. By analyzing the results, we reveal that personalized search has significant improvement over common web search on some queries but it also has little effect on other queries (e.g., queries with small click entropy) and even harms search accuracy under some situations. Furthermore, we show that click-based personalization strategies perform consistently and considerablely well while profile-based ones are unstable in our experiments. We also reveal that both long-term and short-term contexts are very important in improving search performance for profile-based personalized search strategies.".
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- 495 title "A Large-scale Evaluation and Analysis of Personalized Search Strategies".
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- 504 creator haifeng-jiang.
- 504 creator howard-ho.
- 504 creator lucian-popa.
- 504 creator wook-shin-han.
- 504 type InProceedings.
- 504 label "Mapping-Driven XML Transformation".
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- 504 abstract "Clio is an existing schema-mapping tool that provides user-friendly means to manage and facilitate the complex task of transformation and integration of heterogeneous data such as XML over the Web or in XML databases. By means of mappings from source to target schemas, Clio can help users conveniently establish the precise semantics of data transformation and integration. In this paper we study the problem of how to efficiently implement such data transformation (i.e., generating target data from the source data based on schema mappings). We present a three-phase framework for high-performance XML-to-XML transformation based on schema mappings, and discuss methodologies and algorithms for implementing these phases. In particular, we elaborate on novel techniques such as streamed extraction of mapped source values and scalable disk-based merging of overlapping data (including duplicate elimination). We compare our transformation framework with alternative methods such as using XQuery or SQL/XML provided by current commercial databases. The results demonstrate that the three-phase framework (although as simple as it is) is highly scalable and outperforms the alternative methods by orders of magnitude.".
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