Truth revelation in approximately efficient combinatorial auctions

D Lehmann, LI Oćallaghan, Y Shoham - Journal of the ACM (JACM), 2002 - dl.acm.org
… The size of the set O of allocations is exponential in k, if there are at least two bidders,
and … di (a) over all a’s in the set O that is of exponential size. One may suspect that this an …

Double blind, placebo controlled trial of two probiotic strains in interleukin 10 knockout mice and mechanistic link with cytokine balance

J McCarthy, L O'mahony, L O'callaghan, B Sheil… - Gut, 2003 - gut.bmj.com
Background: Prophylactic efficacy against colitis following lactobacillus consumption in
interleukin 10 (IL-10) knockout (KO) mice has been reported. Whether this applies equally to …

Clustering data streams: Theory and practice

…, N Mishra, R Motwani, L O'Callaghan - IEEE transactions on …, 2003 - ieeexplore.ieee.org
The data stream model has recently attracted attention for its applicability to numerous types
of data, including telephone records, Web documents, and clickstreams. For analysis of …

Streaming-data algorithms for high-quality clustering

L O'callaghan, N Mishra, A Meyerson… - … Conference on Data …, 2002 - ieeexplore.ieee.org
Streaming data analysis has recently attracted attention in numerous applications including
telephone records, Web documents and click streams. For such analysis, single-pass …

Maintaining variance and k-medians over data stream windows

…, M Datar, R Motwani, L O'Callaghan - Proceedings of the twenty …, 2003 - dl.acm.org
… with relative error of at most ε using O(1/ ε 2 log N) … O(k/τ4 N 2τ log 2 N) memory, where
τ < 1/2 is a parameter which trades off the space bound with the approximation factor of O(2 O

Better streaming algorithms for clustering problems

M Charikar, L O'Callaghan, R Panigrahy - … of the thirty-fifth annual ACM …, 2003 - dl.acm.org
We study clustering problems in the streaming model, where the goal is to cluster a set of
points by making one pass (or a few passes) over the data using a small amount of storage …

Relative roles of source composition, fractional crystallization and crustal contamination in the petrogenesis of Andean volcanic rocks

…, PW Francis, L O'Callaghan - … Transactions of the …, 1984 - royalsocietypublishing.org
There are well established differences in the chemical and isotopic characteristics of the calc-alkaline
basalt—andesite-dacite-rhyolite association of the northern (nvz), central (cvz) and …

Ignimbrites of the cerro Galan caldera, NW Argentina

…, RD Hamer, RJ Pankhurst, LO O'callaghan… - Journal of Volcanology …, 1985 - Elsevier
The 35 × 20 km Cerro Galán resurgent caldera is the largest post-Miocene caldera so far
identified in the Andes. The Cerro Galán complex developed on a late pre-Cambrian to late …

[BOOK][B] A history of Ireland

M Cronin, L O'Callaghan - 2018 - books.google.com
… The lack of an agreement between Henry and O’Connor could have caused problems in
the future if O’Connor had ever chosen to rise against the new English ruler of Ireland. It is …

Differential cytokine response from dendritic cells to commensal and pathogenic bacteria in different lymphoid compartments in humans

L O'Mahony, L O'Callaghan… - American Journal …, 2006 - journals.physiology.org
Resident host microflora condition and prime the immune system. However, systemic and
mucosal immune responses to bacteria may be divergent. Our aim was to compare, in vitro, …