## My research

My more theoretical work is broadly defined as nonparametric regression. There are several Bristol statisticians interested in this research theme. My main areas of interest are:

- Controlling local extreme values
- Regression on a graph
- Total variation penalties
- Image analysis
- Multiresolution

I also do more applied statistical work with dietary patterns, and epidemiology. My areas of interest here are:

- Principal components analysis
- Cluster analysis
- Dietary patterns and fat/lean mass
- Multilevel modelling

### Publications

Northstone, K., Smith, A.D.A.C., Newby P.K. & Emmett, P.M. Longitudinal comparisons of dietary patterns derived by cluster analysis in 7- to 13-year-old children, British Journal of Nutrition, in press. doi:10.1017/S0007114512004072

Smith, A.D.A.C., Emmett, P.M., Newby P.K. & Northstone, K. Dietary patterns obtained through principal components analysis: the effect of input variable quantification, British Journal of Nutrition, in press. doi:10.1017/S0007114512003868

Smith, A.D.A.C., Emmett, P.M., Newby P.K. & Northstone, K. (2011).
A comparison of dietary patterns derived by cluster and principal components analysis in a UK cohort of children,
European Journal of Clinical Nutrition, **65**, p.1102-9.

Kovac, A. & Smith, A.D.A.C. (2011).
Nonparametric regression on a graph,
Journal of Computational and Graphical Statistics, **20**, p.432-47.

Smith, A.D.A.C. & Wand, M.P. (2008).
Streamlined variance calculations for semiparametric mixed models,
Statistics in Medicine, **27**, p.435-48.

This is a preprint of an article published in
Statistics in Medicine.
Copyright © John Wiley & Sons, Ltd.

### Invited talks

L_{1}-penalised regression on a graph. Statistics Seminar, Université catholique de Louvain. abstract

Penalised regression on a graph. Statistics Seminar, University of Birmingham. abstract

Closing Remarks. MINGLE 2012.

Describing childhood diet with cluster analysis. RSS 2012. abstract

Total variation on a graph. Recent Developments in Statistical Multiscale Methods. abstract

Generalisations of penalised regression with the Manhattan norm. Statistics seminar, University of Bristol. abstract

Dietary patterns in the ALSPAC cohort: Cluster analysis. EUCCONET. abstract

Quadratic Programming and Penalised Regression. 17th EYSM. abstract

Penalised regression with the Manhattan norm. Bristol-Bath postdoc talks, University of Bath. abstract

Nonparametric regression with the Manhattan norm. Bristol-Oxford postdoc seminar, University of Oxford. abstract

Denoising UK House Prices. RSS 2010. abstract

Regression on a Graph. Statistics seminar, Cardiff University. abstract

Nonparametric Regression on a Graph. RSS 2009. abstract

### Contributed talks

Describing childhood diet with cluster analysis. YSM 2011, awarded first prize for best talk. abstractNonparametric Regression on a Graph. Statworks. abstract

Penalised Regression on a Graph. Sustain Sparsity Workshop. abstract

Nonparametric Regression on a Graph. NSSL 2010. abstract

Denoising UK House Prices. 33rd RSC, awarded first prize for best talk. abstract video 1 video 2

Denoising UK House Prices. YSM 2010, awarded third prize for best talk. abstract video 1 video 2

Regression on a Graph. MINGLE 2009. abstract

Nonparametric Regression on a Graph. 32nd RSC, awarded second prize for best talk. abstract

Image Analysis and Total Variation Denoising 31st RSC. abstract

Image Analysis and Total Variation Denoising YES-I. abstract

### Conferences attended

Oct 2012 | MINGLE 2012, Bristol. |

Sep 2012 | RSS Conference 2012, Telford. |

Jul 2012 | Workshop on Recent Developments in Statistical Multiscale Methods, Georg-August-Universität Göttingen. |

Oct 2011 | Nutrition resources in longitudinal studies; what can we learn from each other? EUCCONET International Workshop, in Bristol. |

Sep 2011 | 17th European Young Statisticians Meeting, FCT, UNL, Lisbon. |

Apr 2011 | Young Statisticians' Meeting 2011, Southampton. |

Sep 2010 | RSS Conference 2010, Brighton. |

June 2010 | Statistical modelling and inference for networks, organised by SuSTaIn, in Bristol. |

June 2010 | Sparse structures: statistical theory and practice, organised by SuSTaIn, in Bristol. |

May 2010 | Conference on Nonparametric Statistics and Statistical Learning (NSSL 2010), Ohio State University. |

April 2010 | 33rd Research Students' Conference in Probability and Statistics, University of Warwick. |

Mar 2010 | Young Statisticians' Meeting 2010, University of Liverpool. |

Oct 2009 | MINGLE 2009, Bristol. |

Sep 2009 | RSS Conference 2009, Edinburgh. |

Mar 2009 | 32nd Research Students' Conference in Probability and Statistics, Lancaster University. |

June 2008 | Workshop on Nonparametric Inference (WNI2008), Coimbra, Portugal |

April 2008 | 31st Research Students' Conference in Probability and Statistics, University of Nottingham. |

Nov 2007 | Modern challenges of curve modelling: inverse problems and qualitative constraints, organised by SuSTaIn, in Bristol. |

Oct 2007 | Young European statisticians Workshop (YES-I) on 'Shape Restricted Inference', EURANDOM, Eindhoven, Netherlands. |