Previous research has addressed the scalability and availability issues associated with the construction of cluster-based network services. This paper studies the clustering of replicated services when the persistent service data is frequently updated. To this end we propose Neptune, an infrastructural middleware that provides a flexible interface to aggregate and replicate existing service mod...

All athletes must train hard in order to improve their performance. Some athletes fail to recover from training, become progressively fatigued, and suffer from prolonged underperformance. They may also suffer from frequent minor infections (particularly respiratory infections). This has been called the over training syndrome, burnout, staleness, or sports fatigue syndrome, but in the absence of...

Federated learning (FL) is a promising paradigm that enables collaboratively shared model across massive clients while keeping the training data locally. However, for many existing FL systems, need to frequently exchange parameters of large size with remote cloud server directly via wide-area networks (WAN), leading significant communication overhead and long transmission time. To mitigate bott...

Some confusion exists in relation to what the over-training syndrome actually is. This is mainly due to a lack of consensus with regard to the terminology that is used to describe the syndrome. Over-training, over-reaching, overtraining syndrome, staleness, burnout and chronic fatigue syndrome are terms that are often used interchangeably when referring to symptoms of the over-training syndrome...

Current data storage on smartphones mostly inherits from desktop/server systems a flash-centric design: The memory (DRAM) effectively acts as an I/O cache for the relatively slow flash. To improve both app responsiveness and energy efficiency, this paper proposes MobiFS, a memory-centric design for smartphone data storage. This design no longer exercises cache writeback at short fixed periods o...

We study the problem of graph tracking with limited information. In this paper, we focus on updating a social network snapshot. Say we have an existing partial snapshot of a network G1. Over time G1 becomes out of date. We want to update G1 through a public API, restricted by the number of API calls allowed. Periodically recrawling every node in the snapshot is prohibitively expensive. We propo...

Conflict-free Replicated Data Types (CRDTs) are data types whose operations do not conflict with each other and, therefore, can be replicated with minimal coordination among replicas. Relevant examples of data types that can be implemented as CRDTs are counters and sets. While it is easy to ensure that all replicas of CRDTs become eventually consistent when the system becomes quiescent, differe...

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The goal of our work is to give a user equipped with an RFID-enabled mobile handset (mobile phone, PDA, laptop. . . ) the ability to know the contents of distant passive RFID tags, without physically moving to them and without using a Wireless Area Network. The existing architectural patterns involving passive tags do not meet simultaneously all of these requirements. Our RFID-based distributed...

The web is one of the important sources of information for different data integration systems. Semantic web represents the knowledge in web through ontologies. When knowledge is to be shared across different sources, integration of ontologies is achieved by means of ontology mapping and merging. When the ontology evolves from one state to another the mapping becomes stale and the user may not r...