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HCI
2007
13 years 6 months ago
A Navigation System Using Ultrasonic Directional Speaker with Rotating Base
This paper proposes new method for object reference which enables a person to find surrounding objects and develops a navigation system named CoCo. CoCo employs an ultrasonic direc...
Kentaro Ishii, Yukiko Yamamoto, Michita Imai, Kazu...
COCO
2007
Springer
126views Algorithms» more  COCO 2007»
13 years 11 months ago
On Derandomizing Probabilistic Sublinear-Time Algorithms
There exists a positive constant α < 1 such that for any function T(n) ≤ nα and for any problem L ∈ BPTIME(T(n)), there exists a deterministic algorithm running in poly(T...
Marius Zimand
COCO
2007
Springer
92views Algorithms» more  COCO 2007»
13 years 11 months ago
Halfspace Matrices
A halfspace matrix is a Boolean matrix A with rows indexed by linear threshold functions f, columns indexed by inputs x ∈ {−1,1}n, and the entries given by Af,x = f(x). We dem...
Alexander A. Sherstov
COCO
2007
Springer
94views Algorithms» more  COCO 2007»
13 years 9 months ago
On Approximate Majority and Probabilistic Time
We prove new results on the circuit complexity of Approximate Majority, which is the problem of computing Majority of a given bit string whose fraction of 1's is bounded away...
Emanuele Viola
COCO
2007
Springer
142views Algorithms» more  COCO 2007»
13 years 11 months ago
Quantum t-designs: t-wise Independence in the Quantum World
A t-design for quantum states is a finite set of quantum states with the property of simulating the Haar-measure on quantum states w.r.t. any test that uses at most t copies of a...
Andris Ambainis, Joseph Emerson