Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Deterministic and Randomized Diffusion based Iterative Generalized Hard
  Thresholding (DiFIGHT) for Distributed Sparse Signal Recovery   In this paper we propose a distributed iterated hard thresholding algorithm
termed DiFIGHT over a network that is built on the diffusion mechanism and also
propose a modification of the proposed algorithm, termed MoDiFIGHT, that has
low complexity in terms of communication in the network. We additionally
propose four different strategies termed RP, RNP, RGP$_r$, and RGNP$_r$ that
are used to randomly select a subset of nodes that are subsequently activated
to take part in the distributed algorithm, so as to reduce the mean number of
communications during the run of the distributed algorithm. We present
theoretical estimates of the long run communication per unit time for these
different strategies, when used by the two proposed algorithms. Also, we
present analysis of the two proposed algorithms and provide provable bounds on
their recovery performance with or without using the random node selection
strategies. Finally we use numerical studies to show that both when the random
strategies are used as well as when they are not used, the proposed algorithms
display performances far superior to distributed IHT algorithm using consensus
mechanism .

25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th