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Suppose you are given some dataset drawn from an underlying probability distribution P and you want to estimate a "simple" subset S of input space such that the probability that a test point drawn… (More)

- Mark D. Reid, Robert C. Williamson
- J. Mach. Learn. Res.
- 2009

We study losses for binary classification and class probability estimation and extend the understanding of them from margin losses to general composite losses which are the composition of a proper… (More)

- Ulrike von Luxburg, Robert C. Williamson, Isabelle Guyon
- ICML Unsupervised and Transfer Learning
- 2009

We examine whether the quality of different clustering algorithms can be compared by a general, scientifically sound procedure which is independent of particular clustering algorithms. We argue that… (More)

- Darren B. Ward, Robert C. Williamson
- IEEE International Conference on Acoustics…
- 2002

Traditional acoustic source localization uses a two-step procedure requiring intermediate time-delay estimates from pairs of microphones. An alternative single-step approach is proposed in this paper… (More)

- Brian C. Lovell, Robert C. Williamson
- IEEE Trans. Signal Processing
- 1992

The authors examine the class of smoothed central finite difference (SCFD) instantaneous frequency (IF) estimators which are based on finite differencing of the phase of the analytic signal. These… (More)

- Garrie Hutchinson, Detlev Heinemann, Michael O. Symes, Robert C. Williamson
- British journal of cancer
- 1981

Peripheral blood lymphocytes (PBL) were obtained from 13 patients and tumour-intrinsic lymphocytes (TIL) from 20 patients with colorectal cancer. The PBL were separated on a Ficoll-Isopaque gradient… (More)

- Shahar Mendelson, Robert C. Williamson
- COLT
- 2002

We consider the sample complexity of agnostic learning with respect to squared loss. It is known that if the function class F used for learning is convex then one can obtain better sample complexity… (More)

Novel 2-oxy-5-isopropylidene-7-hydroxy-9-substituted-2,6-methano-3,4,5,6-tet rahydro-2H-1-benzoxocins are prepared by condensing a 5-(substituted)resorcinol with a… (More)

Surface acoustic wave propagation in shallow, normal incidence and oblique incidence gratings has been studied on YZ LiNbOj. The phase shift or slowing of the surface acoustic wave upon transmission… (More)