Archive for North

X Fall²⁶ World Tour

Posted in Running, Statistics, Travel with tags , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , on September 21, 2026 by xi'an

As you may have noticed from previous entries, over the past three weeks I have been almost constantly travelling, with various but mostly large amounts of luck in my travels.

Starting with a Paris-Marseille round trip for our daughter birthday, where both trains ran on time with operational WiFi and Air conditioning (and the inevitable noisy junior passengers commuting back from their vacations).

Followed a few hours later by a Paris-Lugano round trip where again the stars aligned since the flight to Milano Malpensa was on time and landed 20mn before the only direct (flexi)bus to Lugano departed. Again in time. On the way back I had to leave right after my talk (apologies!) but got a direct (if slow) train to Milano and hopped the push via Montenapoleone (!) between two Milano metro lines to reach Milano Linate with one hour to go. On time again.

One day at home to sort various pump issues (from fixing all car injectors to replacing a drainage pump that failed to stop a massive rainstorm from entering our basement, to a flat bike tyre returning from PariSanté Campus) and then a quick weekend drive to Argentan, Normandy, for which the car managed and the traffic was surprisingly smooth for the last weekend of the national August vacation break), and where I enjoyed a long run in the woody hills, one month or so prior to the Argentan half-marathon, 30 years from my first participation. Enough time back home to cook a fresh, Norman, rhubarb preserve and off to to Durham, Northumbria, by another smooth, on-time, flight, with the small hitch of the RER B—just back from being closed for an entire month—unexpectedly finishing one station too early (and a particularly noisy family returning from one amusement park). And the same on the return, via Newcastle with a glimpse from the train of the Tyne and its iconic bridge. Reminding me of my visit there for the RSS meeting in 2013, travelling with Jim Hobert.

One more day at home and at work (teaching my first Monte Carlo class of the semester) and I was back in Charles de Gaulle airport for the flight to Tokyo Haneda. With enough time to have a second breakfast in the lounge and leave my phone on my seat!, fortunately recovered a few frantic minutes later. The flight took one hour less than expected, thanks to favourable winds, with the hitches of having no AC power plug available on the plane and no Wifi on either phone or laptop, a nuisance on a 12h day flight with a talk to polish. Going through customs at Haneda was even smoother than “usual” and I only took one wrong train on my way to Yokohama. (Which happened again the next days until I decided to stick Google map schedules, which are highly accurate and constantly updated). The only hitch of the trip was the attempt at bullet summiting Fuji-san, unsurprisingly as with most of my bullet attempts!, because the weather conditions were horrendous to the point of wardens turning people off at the entry of the Yoshida path and also to the point of inducing landslides on the unique route conducting to the 5th station. I thus got stuck there with 1600 people for a few hours until the route was reopened and the shuttle restarted, obviously with some further delays in entering the (third) bus, with more confusion and jostling than usual in Japan (but also with a large proportion of foreign hikers!). Taxis were not responding either and before the news came of the reopening I was getting worried about missing my flight! While the return saw no seamless connections and no express trains, leading to a total trip time close to 5 hours, incl. a cold soba stop at a station, I still managed to reach my Haneda hotel at check-in time and to have an intense training session on their treadmill to make up for the missing 15km and 1400⁺ climb. (Rescheduling my direct bus ticket on-line proved impossible from my phone without a local help as automated translation does not work with images.) The flight back to Paris went very smoothly by the Eastern route over the pole, with AC power (making my external battery delivered by amazon.jp fortunately superfluous since it is prohibited to use on AF flights) and Wifi running. Making my working on the paper associated with the Akaike lecture way more efficient.

back from Japan [flotsam, jetsam, lagan, and derelict]

Posted in Books, Mountains, pictures, Running, Travel with tags , , , , , , , , , , , , , , , , , , , , , , , , , , , , , on August 8, 2026 by xi'an

Our last day in Japan was wrecked by Japan Airlines, as our JAL flight from Sapporo to Tokyo Haneda got delayed by five hours… The worst part was being kept in the dark about the delay till the initial departure time and then more as the actual departure time was only given hours later. An opportunity to find out that EU rules about flight compensations and passenger rights do not have a Japanese equivalent..! The only plus side of spending the day at the airport was enjoying a sashimi meal at the Sapporo airport. The next day, the erupting Krasheninnikov volcano in Kamtchatka caused a slight change of flight on the way (North!) back to Paris but Air France still managed a 45mn gain on the planned arrival time. And hardly any jetlag in the following days, as opposed to the unusually long accustomisation through the nights in Nagoya and Tachikawa.

This was the only major hitch of our trip, besides a rental car delay for missing the official translation of our driving licences. Visiting both the Japanese Alps and the island of Hokkaido was a fantastic opportunity, thanks to ISBA 2026. Along enjoying the views and hikes in both locations, I could not refrain from making a connection between the geographies and histories of the Ainus on Hokkaido and of the Haidas in the Pacific Northwest, as they both got colonised and forcibly integrated at about the same epoch, with salmon canning companies enslaving them. The settlers were demoted Union soldiers in one case and former samurais (tondenhei) in the other. Small towns on Hokkaido had some similarities with those of the American and Canadian West, with one-street layout and plenty of space between houses, except for these spaces being intensely cultivated as all of the valleys I saw during that trip. (But very little wildlife, with a single sorry-looking fox, two fleeing monkeys, a single, inquisitive, squirrel, a few deers and no bear.)

On the mountains (and volcanoes) trails, I was impressed by the involvement and preparedness of most Japanese hikers, often quite senior, in climbing volcanoes and facing bear encounters, which also made me discover a very nice local outdoor brand, Mont Bell. (Also finding out that TNF Japan© is a separate franchise with its own products.) And adopt the hiking uniform of wearing shorts and tights, which proved surprisingly comfortable!

Due to a thrombosis scare, I further had the opportunity to visit (again!) the local hospital in Omachi, Nagoya Prefecture, if getting there by bike rather than by water-ambulance. With hugely efficient processing despite the language barrier (except for the doctor with whom I briefly spoke of Mont-Saint-Michel!). And the conclusion of no thrombosis, phew!

Scalable Monte Carlo for Bayesian Learning [not yet a book review]

Posted in Books, Statistics, University life with tags , , , , , , , , , , , , , , , , , , , , , on May 11, 2025 by xi'an

Silarsuaq sikullu kisimi naagalavoq

Posted in Books, Kids, Mountains, Travel with tags , , , , , , , , , , , , , , , , on January 28, 2025 by xi'an