In this paper, we present a fast and scalable Spreading Activation Network (SAN) framework for improving weakly annotated data which is typically generated by an automated information extraction system from Web documents. Weakly annotated data suffers from two major problems; (i) might contain incorrect ontological role assignments, and (ii) might have many missing attributes. The SAN model des...

Most wide-area information servers are instrumented to collect statistics about documents that clients retrieve. However, instrumenting wide-area information servers presents a limited picture of client access patterns. To characterize client patterns that involve several protocols and many servers in a wide-area information system, it is necessary to instrument clients as well as servers. Prec...

42 Computer W ith the advent of distributed computing and the Internet, and with dramatically faster processor clock rates and complete systems on chips, computing is increasingly concerned with the efficient movement of data—across the interconnects within a machine, the system area network within a machine room, and the local area or wide area network. An increasingly critical issue in the de...

In recent years, many high speed congestion control algorithms have been proposed for utilizing network pipes with large bandwidth-delay product, and some of them have also been implemented in popular operating systems. Since the Internet is and tends to be lightly-loaded and there are many bandwidth-greedy applications, high speed congestion control algorithms may be used by many flows of the ...

We present a protocol for general state machine replication – a method that provides strong consistency – that has high performance in a wide-area network. In particular, our protocol Mencius has high throughput under high client load and low latency under low client load even under changing wide-area network environment and client load. We develop our protocol as a derivation from the well-kno...

We present a protocol for general state machine replication – a method that provides strong consistency – that has high performance in a wide-area network. In particular, our protocol Mencius has high throughput under high client load and low latency under low client load even under changing wide-area network environment and client load. We develop our protocol as a derivation from the well-kno...

A new protocol which could be used for the transport of telecommunication signalling messages over an IPbased network is currently being discussed within the IETF. The protocol is called Stream Control Transmission Protocol (SCTP). In this paper we shortly describe SCTP and an implementation of SCTP. Furthermore, we evaluate how the protocol performs in an wide area network, especially when com...

Content distribution networks are the dominant technology for distributing shared media on todays Internet. There are several types of content for which these systems have been proven highly successful: static databases, streaming media, online gaming. At the same time this architecture is not appropriate for other types of applications such as transactional databases that require both strong c...