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- R. Cohen, Shlomo Havlin
- Physical review letters
- 2003

We study the diameter, or the mean distance between sites, in a scale-free network, having N sites and degree distribution p(k) proportional, variant k(-lambda), i.e., the probability of having kâ€¦ (More)

- R. Cohen, Keren Erez, Daniel ben-Avraham, Shlomo Havlin
- Physical review letters
- 2001

We study the tolerance of random networks to intentional attack, whereby a fraction p of the most connected sites is removed. We focus on scale-free networks, having connectivity distribution P(k)â€¦ (More)

- R. Cohen, Shlomo Havlin, Daniel ben-Avraham
- Physical review letters
- 2003

We present an effective immunization strategy for computer networks and populations with broad and, in particular, scale-free degree distributions. The proposed strategy, acquaintance immunization,â€¦ (More)

- R. Cohen, Shlomo Havlin
- 2013

- Lazaros K. Gallos, R. Cohen, Panos Argyrakis, Armin Bunde, Shlomo Havlin
- Physical review letters
- 2005

We study tolerance and topology of random scale-free networks under attack and defense strategies that depend on the degree k of the nodes. This situation occurs, for example, when the robustness ofâ€¦ (More)

- Tooru Tanizawa, G. Paul, R. Cohen, Shlomo Havlin, Harry Eugene Stanley
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2005

We study the robustness of complex networks to multiple waves of simultaneous (i) targeted attacks in which the highest degree nodes are removed and (ii) random attacks (or failures) in whichâ€¦ (More)

- Lidia A. Braunstein, Sergey V. Buldyrev, R. Cohen, Shlomo Havlin, Harry Eugene Stanley
- Physical review letters
- 2003

We study the optimal distance in networks, l(opt), defined as the length of the path minimizing the total weight, in the presence of disorder. Disorder is introduced by assigning random weights toâ€¦ (More)

- Sebastian Neumayer, Gil Zussman, R. Cohen, E. Modiano
- MILCOM 2008 - 2008 IEEE Military Communicationsâ€¦
- 2008

Communication networks are vulnerable to natural disasters, such as earthquakes or floods, as well as to human attacks, such as an electromagnetic pulse (EMP) attack. Such real-world events haveâ€¦ (More)

- Dong Zhou, Amir Bashan, R. Cohen, Yehiel Berezin, Nadav M. Shnerb, Shlomo Havlin
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2014

In a system of interdependent networks, an initial failure of nodes invokes a cascade of iterative failures that may lead to a total collapse of the whole system in the form of an abrupt first-orderâ€¦ (More)

- Niels Schwartz, R. Cohen, Daniel ben-Avraham, Albert-LÃ¡szlÃ³ BarabÃ¡si, Shlomo Havlin
- Physical review. E, Statistical, nonlinear, andâ€¦
- 2002

Many complex networks in nature have directed links, a property that affects the network's navigability and large-scale topology. Here we study the percolation properties of such directed scale-freeâ€¦ (More)