So each item in the list is a list of the the co-ordinates in an n-dimensional space. The array itself is 2-D.
Thanks. On Tue, Nov 26, 2013 at 1:31 PM, Raul Miller <[email protected]> wrote: > Yes? No? > > An example of two-dimensional would be an x/y coordinate system. A > vector in that coordinate system might be something like <3,4>, which > would indicate a distance in a certain direction > > An example of three-dimensional would be an x/y/z coordinate system. A > vector in that coordinate system might be something like <3,4,5>, > which would indicate a distance in a certain direction. > > Basically the length of the list is its "dimensionality". A dimension > is a measurement of some sort, such as a distance in some reference > direction. Traditionally - when talking about spatial dimensions - we > also assume that these reference dimensions are orthogonal. > > That said, you can also think of a table as a "two dimensional" > construct. Here, though, the dimensions have nothing to do with the > contents of the table but instead refer to the height and width of the > table. > > Or does this make sense to you? > > Thanks, > > -- > Raul > > > On Tue, Nov 26, 2013 at 2:01 PM, Don Guinn <[email protected]> wrote: > > You lost me. Wouldn't a list of three numbers in each item still be > > two-dimensional? > > > > > > On Tue, Nov 26, 2013 at 11:51 AM, Raul Miller <[email protected]> > wrote: > > > >> "Vectors of high dimensionality" are probably what we would call a > >> long list. (A two dimensional vector is a list of two numbers. A three > >> dimensional vector is a list of three numbers. And so on...) > >> > >> The topic of speech processing is interesting, of course. > >> > >> Thanks, > >> > >> -- > >> Raul > >> > >> > >> On Tue, Nov 26, 2013 at 4:23 AM, Anssi Seppälä <[email protected] > > > >> wrote: > >> > "Vectors of high dimensionality". Is this interesting to J ? See > below. > >> > > >> > > >> > -----Original Message----- > >> > From: [email protected] [mailto:[email protected]] On > >> Behalf Of Tomi Kinnunen > >> > Sent: 26. marraskuuta 2013 10:33 > >> > To: [email protected] > >> > Subject: NIST i-vector machine learning challenge @ Odyssey 2014 > >> > > >> > Hi all, > >> > > >> > Apologies for possible cross-postings. > >> > > >> > Attention, machine learning people: NIST organizes a new type of > machine > >> learning challenge. The first results of the challenge are presented as > a > >> part of Odyssey 2014: The Speaker and Language Recognition Workshop > >> conference that UEF hosts in 2014 > >> > (http://cs.uef.fi/odyssey2014/) > >> > > >> > National Institute of Standards and Technologies (NIST) organizes a > new > >> type of "i-vector machine learning challenge": > >> > > >> > http://www.nist.gov/itl/iad/mig/ivec.cfm > >> > > >> > The purpose is to invite researchers outside of speech & audio > >> processing fields to do voice biometrics (speaker recognition) without > any > >> knowledge required of speech or signal processing. It involves > processing > >> of feature vectors of high dimensionality, each being a descriptor of > one > >> long audio record. NIST shares an unlabeled training set and > participants > >> will then use an online platform to submit pairwise similarity scores of > >> vectors that NIST scores. > >> > > >> > Schedule: > >> > > >> > Late November 2013: Registration opens on website Late November 2013: > >> Challenge data available on website [ February 10, 2014: Odyssey papers > on > >> Challenge due -- OPTIONAL ] April 7, 2014: Last day to submit output for > >> official scoring April 8, 2014: Official scores (on evaluation subset) > >> posted > >> > > >> > Feel free to forward this to your colleagues as widely as you can! > >> > > >> > Best wishes, > >> > Tomi > >> > > >> > -- > >> > ========================================== > >> > Dr. Tomi H. Kinnunen, Researcher > >> > School of Computing > >> > University of Eastern Finland > >> > P.O. Box 111, FI-80101 Joensuu, FINLAND > >> > Email: [email protected], [email protected] > >> > WWW: http://cs.joensuu.fi/pages/tkinnu/webpage/ > >> > Tel. +358 50 442 2647, +358 44 507 0624 > >> > ========================================== > >> > > >> > ---------------------------------------------------------------------- > >> > For information about J forums see > http://www.jsoftware.com/forums.htm > >> ---------------------------------------------------------------------- > >> For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
