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Book ; Online: MalStone

Bennett, Collin / Grossman, Robert L. / Locke, David / Seidman, Jonathan / Vejcik, Steve

Towards A Benchmark for Analytics on Large Data Clouds

2010

Abstract: Developing data mining algorithms that are suitable for cloud computing platforms is currently an active area of research, as is developing cloud computing platforms appropriate for data mining. Currently, the most common benchmark for cloud computing is ...

Abstract	Developing data mining algorithms that are suitable for cloud computing platforms is currently an active area of research, as is developing cloud computing platforms appropriate for data mining. Currently, the most common benchmark for cloud computing is the Terasort (and related) benchmarks. Although the Terasort Benchmark is quite useful, it was not designed for data mining per se. In this paper, we introduce a benchmark called MalStone that is specifically designed to measure the performance of cloud computing middleware that supports the type of data intensive computing common when building data mining models. We also introduce MalGen, which is a utility for generating data on clouds that can be used with MalStone.
Keywords	Computer Science - Distributed ; Parallel ; and Cluster Computing
Publishing date	2010-07-07
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Measurement of the helicity of W bosons in top quark decays

Ukegawa / Valls / Vejcik / Velev / Vidal / Vilar / Vologouev / Vucinic / Wagner / Wahl / Wallace / Walsh / Wang / Watanabe / Watts / Webb / Wenzel / Wester / Wicklund /

Williams / Wilson / Winer

Physical review letters

2000 Volume 84, Issue 2, Page(s) 216–221

Abstract: We use the transverse momentum spectrum of leptons in the decay chain t-->bW with W-->lnu to measure the helicity of the W bosons in the top quark rest frame. Our measurement uses a t&tmacr; sample isolated in 106+/-4 pb(-1) of data collected in p&pmacr; ...

Abstract	We use the transverse momentum spectrum of leptons in the decay chain t-->bW with W-->lnu to measure the helicity of the W bosons in the top quark rest frame. Our measurement uses a t&tmacr; sample isolated in 106+/-4 pb(-1) of data collected in p&pmacr; collisions at sqrt[s] = 1.8 TeV with the CDF detector at the Fermilab Tevatron. Assuming a standard V-A weak decay, we find that the fraction of W's with zero helicity in the top rest frame is F0 = 0.91+/-0. 37(stat)+/-0.13(syst), consistent with the standard model prediction of F0 = 0.70 for a top mass of 175 GeV/c(2).
Language	English
Publishing date	2000-01-10
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.84.216
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Measurement of the decay amplitudes of B0 --> J/psiK*0 and B(s)(0) --> J/psistraight phi decays

Terashi / Tether / Theriot / Thurman-Keup / Tipton / Tkaczyk / Tollefson / Tollestrup / Toyoda / Trischuk / de Troconiz JF / Tseng / Turini / Ukegawa / Vaiciulis / Valls / Vejcik / Velev / Vidal /

Vilar / Volobouev / Vucinic / Wagner / Wahl / Wallace

Physical review letters

2000 Volume 85, Issue 22, Page(s) 4668–4673

Abstract: An angular analysis of B0-->J/psiK(*0) and B(0)(s)-->J/psistraight phi has been used to determine the decay amplitudes with parity-even longitudinal ( A0) and transverse ( A( parallel)) polarization and parity-odd transverse ( A( perpendicular)) ... ...

Abstract	An angular analysis of B0-->J/psiK(*0) and B(0)(s)-->J/psistraight phi has been used to determine the decay amplitudes with parity-even longitudinal ( A0) and transverse ( A( parallel)) polarization and parity-odd transverse ( A( perpendicular)) polarization. The measurements are based on 190 B0 and 40 B(0)(s) candidates obtained from 89 pb(-1) of &pmacr;p collisions at the Fermilab Tevatron. The longitudinal decay amplitude dominates with \|A0\|(2) = 0.59+/-0. 06+/-0.01 for B0 and \|A0\|(2) = 0.61+/-0.14+/-0.02 for B(0)(s) decays. The parity-odd amplitude is found to be small with \|A( perpendicular)\|(2) = 0.13(+0.12)(-0.09)+/-0.06 for B0 and \|A( perpendicular)\|(2) = 0.23+/-0.19+/-0.04 for B(0)(s) decays.
Language	English
Publishing date	2000-11-27
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.85.4668
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Article ; Online: Dijet production by double pomeron exchange at the fermilab tevatron

Tether / Theriot / Thurman-Keup / Tipton / Tkaczyk / Tollefson / Tollestrup / Toyoda / Trischuk / de Troconiz JF / Tseng / Turini / Ukegawa / Vaiciulis / Valls / Vejcik / Velev / Vidal / Vilar /

Volobouev / Vucinic / Wagner / Wahl / Wallace / Walsh

Physical review letters

2000 Volume 85, Issue 20, Page(s) 4215–4220

Abstract: We report the first observation of dijet events with a double Pomeron exchange topology produced in &pmacr;p collisions at sqrt[s] = 1800 GeV. The events are characterized by a leading antiproton, two jets in the central pseudorapidity region, and a ... ...

Abstract	We report the first observation of dijet events with a double Pomeron exchange topology produced in &pmacr;p collisions at sqrt[s] = 1800 GeV. The events are characterized by a leading antiproton, two jets in the central pseudorapidity region, and a large rapidity gap on the outgoing proton side. We present results on jet kinematics and production rates, compare them with corresponding results from single diffractive and inclusive dijet production, and test factorization.
Language	English
Publishing date	2000-11-13
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.85.4215
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Article ; Online: Observation of diffractive b-quark production at the fermilab tevatron

Ukegawa / Valls / Vejcik / Velev / Vidal / Vilar / Vologouev / Vucinic / Wagner / Wahl / Wallace / Walsh / Wang / Watanabe / Watts / Webb / Wenzel / Wester / Wicklund /

Williams / Wilson / Winer

Physical review letters

2000 Volume 84, Issue 2, Page(s) 232–237

Abstract: We report a measurement of the fraction of b quarks produced diffractively in &pmacr;p collisions at sqrt[s] = 1.8 TeV. Diffraction is identified by the absence of particles in a forward pseudorapidity region. From events with an electron of transverse ... ...

Abstract	We report a measurement of the fraction of b quarks produced diffractively in &pmacr;p collisions at sqrt[s] = 1.8 TeV. Diffraction is identified by the absence of particles in a forward pseudorapidity region. From events with an electron of transverse momentum 9.5<p(e)(T)<20 GeV/ c within the pseudorapidity region \|eta\|<1.1, the ratio of diffractive to total b-quark production rates is found to be R(&bmacr;b) = [0.62+/-0.19(stat)+/-0.16(syst)]%. This result is comparable in magnitude to corresponding ratios for W and dijet production but significantly lower than expectations based on factorization.<br />
Language	English
Publishing date	2000-01-10
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.84.232
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Measurement of b-quark fragmentation fractions in p&pmacr; collisions at sqrt

Turini / Ukegawa / Valls / Vejcik / Velev / Vidal / Vilar / Vologouev / Vucinic / Wagner / Wahl / Wallace / Walsh / Wang / Watanabe / Watts / Webb / Wenzel / Wester /

Wicklund / Williams / Wilson

Physical review letters

2000 Volume 84, Issue 8, Page(s) 1663–1668

Abstract: We have studied the production of B hadrons in 1.8-TeV p&pmacr; collisions. We present measurements of the fragmentation fractions, f(u), f(d), f(s), and f(baryon), of produced b quarks that yield B+, B0, B(0)(s), and Lambda;(0)(b) hadrons. ... ...

Abstract	We have studied the production of B hadrons in 1.8-TeV p&pmacr; collisions. We present measurements of the fragmentation fractions, f(u), f(d), f(s), and f(baryon), of produced b quarks that yield B+, B0, B(0)(s), and Lambda;(0)(b) hadrons. Reconstruction of five electron-charm final states yields f(s)/( f(u)+f(d)) = 0.213+/-0.068 and f(baryon)/( f(u)+f(d)) = 0.118+/-0.042, assuming f(u) = f(d). If all B hadrons produced in p&pmacr; collisions cascade to one of these four hadrons, we determine f(u) = f(d) = 0.375+/-0.023, f(s) = 0.160+/-0.044, and f(baryon) = 0.090+/-0.029. If we do not assume f(u) = f(d), we find f(d)/f(u) = 0.84+/-0.16.
Language	English
Publishing date	2000-02-21
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.84.1663
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Direct measurement of the W boson width in p&pmacr; collisions at radicals = 1.8 TeV

Theriot / Thurman-Keup / Tipton / Tkaczyk / Tollefson / Tollestrup / Toyoda / Trischuk / de Troconiz JF / Tseng / Turini / Ukegawa / Vaiciulis / Valls / Vejcik / Velev / Vidal / Vilar / Volobouev /

Vucinic / Wagner / Wahl / Wallace / Walsh / Wang

Physical review letters

2000 Volume 85, Issue 16, Page(s) 3347–3352

Abstract: This Letter describes a direct measurement of the W boson total decay width, gamma(W), using the Collider Detector at Fermilab. The measurement uses an integrated luminosity of 90 pb(-1), collected during the 1994-1995 run of the Fermilab Tevatron p& ... ...

Abstract	This Letter describes a direct measurement of the W boson total decay width, gamma(W), using the Collider Detector at Fermilab. The measurement uses an integrated luminosity of 90 pb(-1), collected during the 1994-1995 run of the Fermilab Tevatron p&pmacr; collider. The width is determined by normalizing predicted signal and background distributions to 49 844 W-->enu candidates and 21 806 W-->μnu candidates in the transverse-mass region M(T)<200 GeV and then fitting the predicted shape to the 438 electron events and 196 muon events in the high- M(T) region, 100<M(T)<200 GeV. The result is gamma(W) = 2.04+/-0.11(stat)+/-0.09(syst) GeV.<br />
Language	English
Publishing date	2000-10-16
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.85.3347
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Transverse momentum and total cross section of e(+)e(-) pairs in the Z-boson region from p&pmacr; collisions at sqrt

Vejcik / Velev / Vidal / Vilar / Vologouev / Vucinic / Wagner / Wahl / Wallace / Walsh / Wang / Watanabe / Watts / Webb / Wenzel / Wester / Wicklund / Williams / Wilson /

Winer / Winn / Wolbers

Physical review letters

2000 Volume 84, Issue 5, Page(s) 845–850

Abstract: The transverse momentum and total cross section of e(+)e(-) pairs in the Z-boson region of 66

Abstract	The transverse momentum and total cross section of e(+)e(-) pairs in the Z-boson region of 66<M(ee)<116 GeV/c(2) from p&pmacr; collisions at sqrt[s] = 1.8 TeV are measured using 110 pb(-1) of collisions taken by the Collider Detector at Fermilab during 1992-1995. The total cross section is measured to be 248+/-11 pb. The differential transverse momentum cross section is compared with calculations that match quantum chromodynamics perturbation theory at high transverse momentum with the gluon resummation formalism at low transverse momentum.<br />
Language	English
Publishing date	2000-01-31
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.84.845
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Search for a fourth-generation quark more massive than the Z0 boson in p&pmacr; collisions at radicals = 1.8 TeV

Trischuk / de Troconiz JF / Truitt / Tseng / Turini / Ukegawa / Valls / Vejcik / Velev / Vidal / Vilar / Vologouev / Vucinic / Wagner / Wahl / Wallace / Walsh / Wang / Watanabe /

Waters / Watts / Webb / Wenzel

Physical review letters

2000 Volume 84, Issue 5, Page(s) 835–840

Abstract: We present the results of a search for pair production of a fourth-generation charge -1 / 3 quark (b(')) in sqrt[s] = 1.8 TeV p&pmacr; collisions using 88 pb(-1) of data obtained with the Collider Detector at Fermilab. We assume that both quarks decay ... ...

Abstract	We present the results of a search for pair production of a fourth-generation charge -1 / 3 quark (b(')) in sqrt[s] = 1.8 TeV p&pmacr; collisions using 88 pb(-1) of data obtained with the Collider Detector at Fermilab. We assume that both quarks decay via the flavor-changing neutral current process b(')-->bZ(0) and that the b(') mass is greater than m(Z)+m(b). We studied the decay mode b(')b(');-->Z(0)Z(0)b&bmacr; where one Z0 decays into e(+)e(-) or μ(+)μ(-) and the other decays hadronically, giving a signature of two leptons plus jets. An upper limit on the sigma(p&pmacr;-->b(')b(');)x[B(b(')-->bZ(0))](2) is established as a function of the b(') mass. We exclude at 95% confidence level a b(') quark with mass between 100 and 199 GeV/c(2) for B(b(')-->bZ(0)) = 100%.
Language	English
Publishing date	2000-01-31
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.84.835
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Production of Upsilon(1S) mesons from chi(b) decays in p&pmacr; collisions at sqrt

Toyoda / Trischuk / de Troconiz JF / Truitt / Tseng / Turini / Ukegawa / Valls / Vejcik / Velev / Vidal / Vilar / Vologouev / Vucinic / Wagner / Wahl / Wallace / Walsh / Wang /

Watanabe / Waters / Watts / Webb

Physical review letters

2000 Volume 84, Issue 10, Page(s) 2094–2099

Abstract: We have reconstructed the radiative decays chi(b)(1P)-->Upsilon(1S)gamma and chi(b)(2P)-->Upsilon(1S)gamma in p&pmacr; collisions at sqrt[s] = 1.8 TeV, and measured the fraction of Upsilon(1S) mesons that originate from these decays. For Upsilon(1S) ... ...

Abstract	We have reconstructed the radiative decays chi(b)(1P)-->Upsilon(1S)gamma and chi(b)(2P)-->Upsilon(1S)gamma in p&pmacr; collisions at sqrt[s] = 1.8 TeV, and measured the fraction of Upsilon(1S) mesons that originate from these decays. For Upsilon(1S) mesons with p(Upsilon)(T)>8.0 GeV/c, the fractions that come from chi(b)(1P) and chi(b)(2P) decays are [27.1+/-6.9(stat)+/-4. 4(syst)]% and [10.5+/-4.4(stat)+/-1.4(syst)]%, respectively. We have derived the fraction of directly produced Upsilon(1S) mesons to be [50.9+/-8.2(stat)+/-9.0(syst)]%.
Language	English
Publishing date	2000-03-06
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.84.2094
Database	MEDical Literature Analysis and Retrieval System OnLINE

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