search for: huygens

Hello to the R people, within ward clustering the distance calculated to decide the clustering of 2 subsets (h1 and h2) is the variation of inertia : d(h1,h2)=I(h1Uh2)-I(h1)-I(h2); i've been said that a way to calculate faster this d(h1,h2) is using the huygens theorem decomposing the inertia into "the inertia to the centroid + the distance to an axe" (that's my version ...). My problem is that i don't really see how to simplify the d(h1,h2) expression using the theorem and then go faster? Thanks in advance, cordialement, -- Nicolas B...

Good people, I'm new to samba and more experienced with the unix world than the windows world. I have set up a small system consisting of a samba server running Samba 2.2.3 and FreeBSD 4.4, two win2k systems and a win98 notebook. Networking hardware consists of 3com in the FreeBSD system, whatever 10BaseT stuff is in the motherboards of the windows systems, and 10BaseT twisted pair and hub.

...ether as "How can we make Dovecot as compatible as possible with Courier-IMAP"? Thanks, -- Ing. A.C.J. van Amersfoort (Arno) Electronics & ICT Engineer ---------------------------------------------------------------- Leiden Institute of Physics (LION), Electronics Department (ELD) Huygens Laboratory (Room 1007), Leiden University Postal Address: P.O. Box 9504, 2300 RA Leiden Visit Address : Niels Bohrweg 2, 2333 CA Leiden The Netherlands ---------------------------------------------------------------- Phone : +31-(0)71-527.1894 Fax : +31-(0)71-527.5819 E-mail : a.c.j.van.a...