Archive for homeless

homeless hosted in my former office

Posted in pictures, Travel with tags , , , , , , , , , on September 24, 2020 by xi'an

merry Xmas

Posted in Kids, pictures with tags , , , , , on December 24, 2019 by xi'an

cement homeless

Posted in pictures, Travel with tags , , , , , , , , on February 2, 2019 by xi'an

Reykjavik nights [book review]

Posted in Books, Travel with tags , , , , , , , , on March 26, 2016 by xi'an

While this is the latest book in the Erlendur series by Icelandic author Arnaldur Indriðason, Reykjavik Nights [or Reykjavíkurnætur] is also the earliest in the chronology of the series since it relates to the first years of Erlendur in the Icelandic police and to murders that took place in 1974 in Reykjavik. The book may appeal mostly to those who have already read (the) other books in the series, as it explains very little about Erlendur’s past and the reasons he is so fascinated by missing persons. It is however a great read, despite or thanks to very little action when touring the nights of Reykjavik and arresting drunks weekend after weekend. (There is a slight interlude when Erlendur takes part in policing the 1100 anniversary celebrations of the settlement of Iceland at Þingvellir where the Alþing, the original Icelandic parliament stood.) Actually, I find the detective part less than convincing but it hardly matters since the development of the character of Erlendur is very well conducted. With a constant focus throughout the series on themes like domestic violence and drunkenness. A very pleasant read.

capture-recapture homeless deaths

Posted in Statistics, Travel, University life with tags , , , , , , , on August 28, 2014 by xi'an

Paris and la Seine, from Pont du Garigliano, Oct. 20, 2011In the newspaper I grabbed in the corridor to my plane today (flying to Bristol to attend the SuSTaIn image processing workshop on “High-dimensional Stochastic Simulation and Optimisation in Image Processing” where I was kindly invited and most readily accepted the invitation), I found a two-page entry on estimating the number of homeless deaths using capture-recapture. Besides the sheer concern about the very high mortality rate among homeless persons (expected lifetime, 48 years; around 7000 deaths in France between 2008 and 2010) and the dreadful realisation that there are an increasing number of kids dying in the streets, I was obviously interested in this use of capture-recapture methods as I had briefly interacted with researchers from INED working on estimating the number of (living) homeless persons about 15 years ago. Glancing at the original paper once I had landed, there was alas no methodological innovation in the approach, which was based on the simplest maximum likelihood estimate. I wonder whether or not more advanced models and [Bayesian] methods of inference could [or should] be used on such data. Like introducing covariates in the process. For instance, when conditioning the probability of (cross-)detection on the cause of death.