Stock market prediction (SMP) is a challenging task due to its uncertainty, nonlinearity, and volatility. Machine learning models, such as artificial neural networks (ANNs) support vector regression (SVR), have been widely used for stock achieved high performance in the sense of "minimum errors." In context SMP, however, it more meaningful measure using cost." For example, false positive error ...

In many organizations and financial institutions, we don't always have acsses to inputs and outputs to evaluate the decision-making units (DMUs), but rather only a ratio of inputs to outputs ( or reverse) might be available. In DEA, cost efficiency determines input standards based on input costs. In multi-stage network DEA processes, in addition to input standards, cost efficiency would determi...

this paper deals with a multi-period fixed charge production-distribution problem associated with backorder and inventories. the objective is to determine the size of the shipments from each supplier and backorder and inventories at each period, so that the total cost incurred during the entire period towards production, transportation, backorder and inventories is minimised. a 0-1 mixed intege...

Though BitTorrent is an extremely popular and cost efficient P2P file distribution system, it is not able to efficiently utilize all available bandwidth. BitTorrent employs fairness and anti-freeriding mechanisms that function optimally in scenarios when broadband connections are symmetric. However, the majority of peers in BitTorrent swarms have asymmetric broadband connections. This makes it ...

BACKGROUND Admission to hospital can lead to persistent deterioration in physical functioning, particularly for the more vulnerable older population. As a result of this physical deterioration, older people who have been recently discharged from hospital may be particularly high users of health and social support services. Quantify usage and costs of services in older adults after hospitalisati...

The ecosystem health concept is an integrative approach to environmental management and while conceptually logical, it is difficult to implement. The false dichotomy of nature and culture, and the way in which knowledge is constructed has led to many of these problems. To understand the relationship between knowledge systems, the ecosystem health concept is explored here by assessing the condit...

We propose the use of a game with a purpose (GWAP) to facilitate crowd-sourcing of phraseequivalents, as an alternative to expert or paid crowd-sourcing. Doodling is an online multiplayer game, in which one player (drawer), draws pictures on a shared board to get the other players (guessers) to guess the meaning behind an assigned phrase. In this paper we describe the system and results from se...