We study the coupling of basic quantitative portfolio selection strategies with a financial news article prediction system, AZFinText. By varying the degrees of portfolio formation time, we found that a hybrid system using both quantitative strategy and a full set of financial news articles, performed the best. With a 1-week portfolio formation period we achieved a 20.79% trading return using a...

Landing is a challenging aspect of flight because, to land safely, speed must be decreased to a value close to zero at touchdown. The mechanisms by which animals achieve this remain unclear. When landing on horizontal surfaces, honey bees control their speed by holding constant the rate of front-to-back image motion (optic flow) generated by the surface as they reduce altitude. As inclination i...

of network pricing. We collected data to empirically model the workload. The data shows temporal locality of reference in all traces. LRU based holding time policies use this temporal locality eeectively and perform better than any other strategy examined. To our surprise, timer based schemes perform poorly. However, the LRU-delay scheme, which corresponds to a xed system-wide timeout, is eeect...

We consider a bus stop that is located a short distance upstream of a signalized intersection. A bus that dwells at this so-called " nearside stop " can impede queued cars upstream as they discharge during their green time at the intersection. Added car delays and residual queues can result. All else equal, the closer the stop's location to the intersection, the greater the potential damage to ...

The actual bus headway often deviates from the planned departure frequency because of external factors, such as traffic conditions and public transport demand, leading to transit resource waste and reducing the quality of service. In view of the existing shortcomings of the current dispatching strategy, a mixed integer programming model, integrating a bus-holding and stop-skipping strategy, is ...

The strategies and traits males evolve to mate with females are incredible in their diversity. Theory on the evolution of secondary sexual characters suggests that evolving any costly trait or strategy will pay off and stabilise in the population if it is advantageous compared to the alternative less costly strategy, but quantifying the relative success of the two can be difficult. In Lake Mala...

This paper uses data on actual returns on taxable bonds, tax-exempt bonds, and a small sample of equity mutual funds over the 1962-1998 period to compare two asset location strategies for retirement savers who invest in equities through equity mutual funds. The first strategy, ‘defer stocks first,’ gives priority to holding equity mutual funds in a saver’s tax-deferred account, while the second...