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What (who) is backward octant - definition
WIKIMEDIA DISAMBIGUATION PAGE
Octant (disambiguation)
Octant
·noun The eighth part of a circle; an arc of 45 degrees.
II. Octant ·noun One of the eight parts into which a space is divided by three coordinate planes.
III. Octant ·noun An instrument for measuring angles (generally called a quadrant), having an arc which measures up to 9O°, but being itself the eighth part of a circle. ·cf. Sextant.
IV. Octant ·noun The position or aspect of a heavenly body, as the moon or a planet, when half way between conjunction, or opposition, and quadrature, or distant from another body 45 degrees.
octant
['?kt(?)nt]
¦ noun
1. an arc of a circle equal to one eighth of its circumference, or the area enclosed by such an arc with two radii of the circle.
2. each of eight parts into which a space or solid body is divided by three planes which intersect (especially at right angles) at a single point.
3. an obsolete instrument in the form of a graduated eighth of a circle, used in astronomy and navigation.
Origin
C17: from L. octans, octant- 'half-quadrant', from octo 'eight'.
Forward–backward algorithm
HIDDEN MARKOV MODEL INFERENCE ALGORITHM WHICH COMPUTES THE POSTERIOR MARGINALS OF ALL HIDDEN STATE VARIABLES GIVEN A SEQUENCE OF OBSERVATIONS, MAKING USE OF DYNAMIC PROGRAMMING TO MAKE ONLY 2 PASSES: ONE FORWARD, ONE BACKWARD
Forward/backward algorithm; Posterior decoding; Forward-backward algorithm
The forward–backward algorithm is an inference algorithm for hidden Markov models which computes the posterior marginals of all hidden state variables given a sequence of observations/emissions o_{1:T}:= o_1,\dots,o_T, i.e.
Wikipedia
Octant
Octant may refer to:
- Octant (plane geometry), one eighth of a full circle
- Octant (solid geometry), one of the eight divisions of 3-dimensional space by coordinate planes
- Octant (circle), a circular segment
- Octant (instrument) for celestial navigation
- Octans, a constellation also called The Octant
- Octant (band), from Seattle, Washington
