We obtain semiparametric efficiency bounds for the estimation of a location parameter in a time series model where the innovations are stationary and ergodic, conditionally symmetric martingale differences but otherwise possess general dependence and distributions of unknown form. We then...

The valuation of French Canadian paintings is analysed empirically. Using a sample of auction prices for major French Canadian painters for the period 1968 to 2005, we run hedonic regressions to determine the influence of various factors, including painter identity, on auction prices, as well as...

Although the market for Canadian paintings is now of substantial magnitude, with several works having recently been sold for well over a million dollars, it remains true that with very few exceptions, the works of Canadian painters are bought and sold only in Canada and seem to be held only by...

We consider parametric non-linear regression models with additive innovations which are serially uncorrelated but not necessarily independent, and consider the consequences of maximum likelihood and related one-step iterative estimation when the innovations are treated as being iid from their...

The valuation of Canadian paintings is analysed empirically. Using a sample of auction prices for major Canadian painters for the period 1968-2001, we run hedonic regressions to analyse the influence of various factors, including painter identity, on auction prices, as well as to construct a...

Constant-quality commercial indices generated by ordinary least squares may suffer an efficiency loss due to leptokurtosis caused by outliers in transactions data. When the subsequent nonnormality occurs, substantial improvement in index precision is obtained by estimating the hedonic model...