Richard Olsen – författare

Liquid markets generate hundreds or thousands of ticks (the minimum change in price a security can have, either up or down) every business day. Data vendors such as Reuters transmit more than 275,000 prices per day for foreign exchange spot rates alone. Thus, high-frequency data can be a fundamental object of study, as traders make decisions by observing high-frequency or tick-by-tick data. Yet most studies published in financial literature deal with low frequency, regularly spaced data. For a variety of reasons, high-frequency data are becoming a way for understanding market microstructure. This book discusses the best mathematical models and tools for dealing with such vast amounts of data.This book provides a framework for the analysis, modeling, and inference of high frequency financial time series. With particular emphasis on foreign exchange markets, as well as currency, interest rate, and bond futures markets, this unified view of high frequency time series methods investigates the price formation process and concludes by reviewing techniques for constructing systematic trading models for financial assets.

It costs more to place a child in the care of a local authority than it does to send a child to a top boarding school, and there are substantial variations in costs both between and within authorities.This book gets to the bottom of the costs of care and provides an insight into how these variations in cost relate to differences in children's needs, and most importantly, whether higher costs reflect better services and better outcomes for children.Costs and Consequences for Children Placed Away from Home draws from new original research, and considers the implications for best practice and future policy. It also features information about a newly pioneered resource: a fully workable decision analysis model designed for use in local authorities which uses historical data for each child to calculate the probable cost consequences of difference placement choices.This book sheds light on how to calculate the financial and social costs of care, and will be invaluable to both social work managers and policy makers working in children's services.