Research news

A few papers are working their way through the journal system:

Once all these are finally done, I can get back to some work on generating functions, after several years, which I am very much looking forward to.


Renee Wilson RIP

My mother died 2016-02-02 after a fairly short battle with cancer. Although aged nearly 82 she was very energetic and this was a big shock to all who knew her. It is a strange feeling when someone you thought would be around forever leaves so early. I have a memorial website to which anyone reading this who knew her should ask me for the link.

Being orphaned in middle age is much better than earlier, but still tough to handle.

The logic of journalism?

From BBC:

Intelligence tests are as much a measure of motivation as they are of mental ability, says research from the US.

Researchers from Pennsylvania found that a high IQ score required both high intelligence and high motivation but a low IQ score could be the result of a lack of either factor.

It looks like “P implies A and B” BUT “not A or not B implies not P”. This seems a strange way to write a news story, since the second statement is logically equivalent to the first.

Another interpretation is that the event “low IQ score” is not the complement of  the event “high IQ score”. This gives a little more content: “non-high” is implied a priori by lack of either factor, but in fact “low” is implied.

Of course “could” might mean that “not A and not B is not inconsistent with not P”, but that would be very much less newsworthy. Perhaps we need a standard language for journalists to deal with such issues.

Knowing your own place in the world (of science)

I just found some very interesting graphics that show how relatively (in)active various areas of science are, in terms of citations and volume of publication. I always knew there were a lot of biologists and medical researchers, but just how many was surprising.Now I have a better understanding of how universities work.

DIMACS 20th birthday

Today I attended the 20th birthday celebrations for DIMACS at Rutgers University. There were some nice talks: Ron Graham on addressing in graphs; Peter Winkler on combinatorics in statistical physics, Joan Feigenbaum on approximate privacy, Michael Trick on the DIMACS Challenges, Richard Karp on implicit set algorithms, Eva Tardos on games in networks, etc. There was also an interesting panel discussion on education (de facto national standards coming in the US are strongly opposed by some here, because of the de-emphasizing of discrete math topics) and industry (the environment is much meaner now, and managers are loath to fund projects without clearly stated benefits to the company). This was my first visit and I can see now why DIMACS has been so successful. Thanks to all the organizers and speakers for a very enjoyable day.

Note: another report by Muthu

Francis Eric Wilson RIP

My father died on Monday. I arrived 3 hours before, and was holding his hand as he died. He lived long enough to see photos of his second grandson, and recognized me when I arrived.

In case there is anyone reading who knew him, I enclose the death notice that my mother and I put in the newspaper. I intend to make a website as a memorial.

WILSON, FRANCIS ERIC passed away peacefully at home [address] on 1 September 2008 aged 77. His generous heart gave out at last. Loved husband of Renee, father of Mark, father-in-law of Golbon and grandad of Yusef and Yahya. Privately cremated. Donations in lieu of flowers to Nelson Regional Hospice Trust or NZ Heart Foundation. He drank deeply from the well of life, and took the final curtain with aplomb.

It is a strange feeling to be the “patriarch” as someone said to me today – childhood now feels officially over. It certainly has given me resolve to look after my health and try to be around until my children are 70.

Straight and crooked thinking

My Otago colleague Mike Atkinson recommended this book which he remembered from his youth. Written in 1930 by Robert Thouless, a psychologist at Cambridge, it is a superb exposition of errors of thought, dishonest rhetorical tricks, and how to combat them (the reviewers on seem to agree with me). Thouless believed in the existence of parapsychological phenomena (ESP) but was severe on purported experimental proofs of this existence. The examples in the book show his frustration with politics. It isn’t often that I find a kindred spirit from the past. Our lifespans overlapped considerably – I wish I had met him.

The book is out of print and hard to find (I found it in our university library). If anyone knows how to get such books reissued, please let me know.

The first post

Like millions of other people, I have finally decided to start a blog. I have taken the opportunity to do some extra work and start to migrate my old website here. Thus there are a lot of posts dated before this one – there is one for each research paper, for example.

I am not known for self-deprecating statements. However starting a blog takes me outside my comfort zone of normal behaviour, so I thought I would continue this by choosing such a title. If you don’t see why it is self-deprecating, see this site and perhaps this one.

The main purpose for the moment is to force me to indite, in a disciplined way, some of the many thoughts that rattle around my brain almost continuously. I hope that others may find some of these interesting and informative. I aim to post at least once a week – let’s see what happens.