Dániel Lovas

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The image-based plant identification challenge was focused on tree, herbs and ferns species identification based on different types of images. The aim of the task was to produce relevant species for each observation of a plant of the test dataset. We have elaborated a viewpoints combined classification method for this challenge. We have applied dense SIFT(More)
Search for single top quark production in p(p)over-bar collisions at root s=1.96 TeV in the missing transverse energy plus jets topology Search for single top quark production in p p collisions at ffiffi ffi s p ¼ 1:96 TeV in the missing transverse energy plus jets topology We report a search for single top quark production with the CDF II detector using(More)
Manually monitoring the population displacement of fish species and the whale individuals is a painful and definitely unscalable process. Video data about fishes often require laborious visual analysis, moreover biologists often use photos of whale caudal for further analysis as it is the most discriminant pattern for distinguishing an individual whale from(More)
Fishery video data often require laborious visual analysis, therefore a video-based fish identification challenge is announced in the LifeCLEF campaign for automatic fish categorization and enumeration. We have elaborated a complex system to detect, classify and track objects (fishes) in underwater video by examining each image frame of it. For the(More)
We study the underlying event in proton-antiproton collisions by examining the behavior of charged particles produced in association with a large transverse momentum jet ($ 2:2 fb À1) or with a Drell-Yan lepton pair ($ 2:7 fb À1) in the Z-boson mass region [70 < MðpairÞ < 110 GeV=c 2 ] as measured by CDF at 1.96 TeV center-of-mass energy. We use the(More)
Measurement of the top quark mass and p p ! t t cross section in the all-hadronic mode with the CDF II detector We present a measurement of the top quark mass and of the top-antitop (t " t) pair production cross section using p " p data collected with the CDF II detector at the Tevatron Collider at the Fermi National Accelerator Laboratory and corresponding(More)
We report the observation of electroweak single top quark production in 3:2 fb À1 of p " p collision data collected by the Collider Detector at Fermilab at ffiffi ffi s p ¼ 1:96 TeV. Candidate events in the W þ jets topology with a leptonically decaying W boson are classified as signal-like by four parallel analyses based on likelihood functions, matrix(More)
We present three measurements of the top-quark mass in the lepton plus jets channel with approximately 1:9 fb À1 of integrated luminosity collected with the CDF II detector using quantities with minimal dependence on the jet energy scale. One measurement exploits the transverse decay length of b-tagged jets to determine a top-quark mass of 166:9 þ9:5 À8:5(More)
The collection of a large number of B-hadron decays to hadronic final states at the CDF II Detector is possible due to the presence of a trigger that selects events based on track impact parameters. However, the nature of the selection requirements of the trigger introduces a large bias in the observed proper-decay-time distribution. A lifetime measurement(More)
Measurement of the t(t)over-bar production cross section in p(p)over-bar collisions at root s=1.96 TeV using soft electron b-tagging Measurement of the top quark mass and p p ! t t cross section in the all-hadronic mode with the CDF II detector We present a measurement of the top quark mass and of the top-antitop (t " t) pair production cross section using(More)