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Nikolay Gagunashvili - Professor Emeritus

Nikolay Gagunashvili

–

School of Engineering and Natural Sciences

Nikolay Gagunashvili

Professor Emeritus

Location
Gróska / Gr-316
Phone
5254727
Email
nikolay [at] hi.is

Unit
Computer Science
Published Work
Nikolay Gagunashvili - published work

Curriculum Vitae
Nikolay Gagunashvili - Curriculum Vitae
ORCID site
https://orcid.org/0000-0002-8473-6933
Research portal – Nikolay Gagunashvili

Published works

2026

Comparative analysis of Richardson-Lucy deconvolution and data unfolding with mean integrated square error optimizationComputer Physics Communications

2025

Data unfolding with mean integrated square error optimizationComputer Physics Communications

2021

ErratumPhysical Review Letters
ErratumPhysical Review Letters

2020

Parametric unfoldingEuropean Physical Journal Plus

2019

CHICOMComputer Physics Communications

2018

CHIWEIComputer Physics Communications

2017

Tests for comparing weighted histograms. Review and improvementsEuropean Physical Journal Plus

2015

Densities mixture unfolding for data obtained from detectors with finite resolution and limited acceptanceNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Densities mixture unfolding for data obtained from detectors with nite resolution and limited acceptanceNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Chi-square goodness of fit tests for weighted histograms. Review and improvementsJournal of Instrumentation

2012

CHIWEI: A code of goodness of t tests for weighted and unweighted histogramComputer Physics Communications
CHICOM: A code of tests for comparing unweighted and weighted histograms and two weighted histogramsComputer Physics Communications
CHIWEIComputer Physics Communications
RAVEN - Boosting data analysis for the LHC experiments

2011

Parametric fitting of data obtained from detectors with finite resolution and limited acceptanceNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

2010

Classifying extremely imbalanced data setsProceedings of Science
Chi-square tests for comparing weighted histogramsNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Classifying extremely imbalanced data sets
RAVEN – a Random Access, Visualization and Exploration Network for the Analysis of Petabyte Sized Data Sets

2009

Application of the rule-growing algorithm RIPPER to particle physics analysis

2008

Application of the rule-growing algorithm RIPPER to particle physics analysisProceedings of Science
Application of the rule-growing algorithm RIPPER to particle physics analysisProceedings of Science
Goodness of fit tests for weighted histogramsNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

2007

Pearson's Chi-Square test modifications for comparison of unweighted and weighted histograms and two weighted histogramsProceedings of Science
Pearson's Test Modifications for Comparison of Unweighted and Weighted Histograms and Two Weighted Histograms

2006

Chi squre test for the Comparison of weighted and Unweighted Histograms
X² test for the comparison of weighted and unweighted histograms
Data unfolding for particle Physics Experiments
Unfolding with system identification

2005

Event-wise pt fluctuations in Au-Au collisions at sNN=130 GeVPhysical Review C - Nuclear Physics
φ Meson production in Au + Au and p + p collisions at ^sNN = 200GeVPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Distributions of charged hadrons associated with high transverse momentum particles in pp and Au+Au collisions at sNN=200GeVPhysical Review Letters

2004

An update from STAR - Using strangeness to probe relativistic heavy ion collisionsJournal of Physics G: Nuclear and Particle Physics
ρ⁰Production and possible modification in Au + Au and p + p collisions at √S_NN= 200 GeVPhysical Review Letters
Rapidity and centrality dependence of proton and antiproton production from¹⁹⁷Au+¹⁹⁷Au collisions at √S_NN=130 GeVPhysical Review C - Nuclear Physics
Identified Particle Distributions in pp and Au + Au Collisions at √S_NN= 200 GeVPhysical Review Letters
Cross sections and transverse single-spin asymmetries in forward neutral-pion production from proton collisions at √s = 200 GeVPhysical Review Letters
Kaon production and kaon to pion ratio in Au + Au collisions at √s_NN = 130 GeVPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Azimuthally sensitive Hanbury Brown-Twiss interferometry in Au + Au collisions at √s_NN= 200 GeVPhysical Review Letters
Photon and neutral pion production in Au+Au collisions at √s_NN=130 GeVPhysical Review C - Nuclear Physics
Azimuthal Anisotropy at the Relativistic Heavy Ion ColliderPhysical Review Letters
Particle-Type Dependence of Azimuthal Anisotropy and Nuclear Modification of Particle Production in [Formula presented] Collisions at [Formula presented]Physical Review Letters

2003

Disappearance of back-to-back high-p_T Hadron correlations in central Au + Au collisions at √S_NN = 200 GeVPhysical Review Letters
ErratumPhysical Review Letters
Transverse-momentum and collision-energy dependence of high-[formula presented] hadron suppression in [formula presented] collisions at ultrarelativistic energiesPhysical Review Letters
Azimuthal Anisotropy and Correlations in the Hard Scattering Regime at RHICPhysical Review Letters
Net charge fluctuations in [Formula Presented] collisions at [Formula Presented]Physical Review C - Nuclear Physics
Strange antiparticle-to-particle ratios at mid-rapidity in √S _NN = 130 GeV Au + Au collisionsPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
The STAR endcap electromagnetic calorimeterNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Transverse-Momentum and Collision-Energy Dependence of High-p_THadron Suppression in Au + Au Collisions at Ultrarelativistic EnergiesPhysical Review Letters
STAR detector overviewNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Evidence from d + Au measurements for final-state suppression of high-p_T hadrons in Au + Au collisions at RHICPhysical Review Letters
Three-pion hanbury brown–twiss correlations in relativistic heavy-ion collisions from the star experimentPhysical Review Letters
Narrowing of the balance function with centrality in Au + Au collisions at √S_NN = 130 GeVPhysical Review Letters
Net charge fluctuations in Au+Au collisions at √S_NN=130 GeVPhysical Review C - Nuclear Physics
Pion-Kaon Correlations in Central Au + Au Collisions at √S_NN= 130 GeVPhysical Review Letters
Evidence from [Formula presented] Measurements for Final-State Suppression of High-[Formula presented] Hadrons in [Formula presented] Collisions at RHICPhysical Review Letters
Disappearance of Back-To-Back High-[Formula presented] Hadron Correlations in Central [Formula presented] Collisions at [Formula presented]Physical Review Letters
Pion-kaon correlations in central [formula presented] collisions at [formula presented]Physical Review Letters
Narrowing of the Balance Function with Centrality in [Formula presented] Collisions at [Formula presented]Physical Review Letters

2002

Strangeness in Au+Au collisions at √s_NN = 130 GeV observed with the STAR detectorJournal of Physics G: Nuclear and Particle Physics
Azimuthal Anisotropy of [Formula presented] and [Formula presented] Production at Midrapidity from [Formula presented] Collisions at [Formula presented]Physical Review Letters
Elliptic flow from two- and four-particle correlations in Au+Au collisions at [Formula Presented]Physical Review C - Nuclear Physics
Midrapidity Λ and Λ̄ production in Au + Au collisions at √s_NN = 130 GeVPhysical Review Letters
Coherent ρ⁰ production in ultraperipheral heavy-ion collisionsPhysical Review Letters
[Formula Presented] production in relativistic heavy ion collisions at [Formula Presented]Physical Review C - Nuclear Physics
Coherent [Formula presented] Production in Ultraperipheral Heavy-Ion CollisionsPhysical Review Letters
Centrality dependence of high-p_t hadron suppression in Au + Au collisions at √S_NN = 130 GeVPhysical Review Letters
Midrapidity [Formula presented] and [Formula presented] Production in [Formula presented] Collisions at [Formula presented]Physical Review Letters
K*(892)⁰ production in relativistic heavy ion collisions at √S_NN = 130 GeVPhysical Review C - Nuclear Physics
Midrapidity [Formula Presented] production in Au+Au collisions at [Formula Presented] GeVPhysical Review C - Nuclear Physics
Centrality Dependence of High-[Formula presented] Hadron Suppression in [Formula presented] Collisions at [Formula presented]Physical Review Letters
Midrapidity φ production in Au+Au collisions at √S_NN = 130 GeVPhysical Review C - Nuclear Physics
Results from the STAR experimentNuclear Physics A
Azimuthal anisotropy of K_S⁰ and Λ + Λ̄ production at midrapidity from Au + Au collisions at √S_NN = 130 GeVPhysical Review Letters

2001

Measurement of inclusive antiprotons from Au + Au collisions at √^sNN = 130 GeVPhysical Review Letters
Multiplicity distribution and spectra of negatively charged hadrons in Au + Au collisions at √S_NN = 130 GeVPhysical Review Letters
d̄ and ³He Production in √S_NN = 130 GeV Au + Au collisionsPhysical Review Letters
Elliptic flow in Au + Au collisions at √S_NN = 130 GeVPhysical Review Letters
Identified particle elliptic flow in √^sNN = 130 GeVPhysical Review Letters
Multiplicity distribution and spectra of negatively charged hadrons in Au + Au collisions at ⊡^sNN = 130 Ge VPhysical Review Letters
Pion interferometry of √^sNN = 130 GeV Au + Au Collisions at RHICPhysical Review Letters
D- and ³He- production in √^sNN = 130GeV Au + Au collisionsPhysical Review Letters
ErratumPhysical Review Letters
Midrapidity antiproton-to-proton ratio from Au + Au collisions at √S_NN = 130 GeVPhysical Review Letters
Identified particle elliptic flow in Au + Au collisions at √^sNN = 130 GeVPhysical Review Letters

2000

Stable algorithm for extraction of asymmetries from the data on polarized lepton-nucleon scatteringNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Measurement of angular distributions and R = σ_L/σ_T in diffractive electroproduction of ρ⁰ mesonsEuropean Physical Journal C

1999

Observation of a coherence length effect in exclusive ρ⁰ ElectroproductionPhysical Review Letters
Flavor decomposition of the polarized quark distributions in the nucleon from inclusive and semi-inclusive deep-inelastic scatteringPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Beam-Induced Nuclear Depolarization in a Gaseous Polarized-Hydrogen TargetPhysical Review Letters

1998

Flavor asymmetry of the light quark sea from semi-inclusive deep-inelastic scatteringPhysical Review Letters
Measurement of the proton spin structure function g₁^p with a pure hydrogen targetPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Recent developments on the star detector system at RHICNuclear Physics A
The HERMES SpectrometerNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Extraction of asymmetries and spin-dependent structure functions from cross-sections of polarised lepton-nucleon interactionsNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Determination of the deep inelastic contribution to the generalised Gerasimov-Drell-Hearn integral for the proton and neutronPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

1997

Measurement of the neutron spin structure function gⁿ₁ with a polarized ³He internal targetPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

1994

Unfolding of true distributions from experimental data distorted by detectors with finite resolutionsNuclear Inst. and Methods in Physics Research, A

1985

Upper limits on D⁰-D⁰ mixing and BB production from muon-nucleon scatteringPhysics Letters B

1982

Muon pairs and upper limit for upsilon production by 280 GeV muonsNuclear Physics, Section B

1980

Thermodynamic properties of polymer mixtures on a plane square latticeTheoretical and Mathematical Physics

1979

Close packing of rectilinear polymers on a square latticeTheoretical and Mathematical Physics

1978

Self-avoiding walks on a triangular latticeTheoretical and Mathematical Physics

Keywords for Specialisation:

High energy physics

Deconvolution methods

Staitistical data analysis

Digital signal processing

Machine learning methods