This paper discusses the way of processing time-series subsequence matching under time warping. Time warping enables sequences to be found with similar patterns even when they are of different lengths. The prefix-querying method is the first index-based approach that efficiently performs time-series subsequence matching under time warping without false dismissals. This method employs the L dist...

This paper describes SIMPLE: a performance evaluation tool environment for parallel and distributed systems based on monitoring of concurrent interdependent activities. We emphasize the tool environment as a prerequisite for successful performance evaluation. All tools use the data access interface TDL/POET which can decode measured data of arbitrary structure, format and representation. This m...

In this paper we explore the performances and the opportunities provided by the European satellite Sentinel-1 for water resource management applications in low-income countries. The analysis is supported by a synthetic aperture radar (SAR) simulator, which allowed the quantification of the expected characteristics of Sentinel-1 products in three applications: interferometric digital elevation m...

TradeNet, an electronic data interchange (EDI) system, has been touted as one of the most successful implementations of information technology at a nationwide level. To date, assessments of the benefits arising from TradeNet are anec(total and focus primarily on the benefits accruing to the sponsor, i.e., the government agency. Notably absent is a systematic assessment of TradeNet from the pers...

This paper addresses the large-scale acquisition of end-toend network performance. We made two distinct contributions: ordinal rating of network performance and inference by matrix completion. The former reduces measurement costs and unifies various metrics which eases their processing in applications. The latter enables scalable and accurate inference with no requirement of structural informat...