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Гущин Михаил Иванович

Факультет компьютерных наук

Профиль на hse.ru ↗ тел.: 27261
Публикаций
313
Языков
3
Наград
7
Конференций
1
Профиль Публикации (313) Курсы (8)

Профессиональные интересы

анализ данныхфизика высоких энергий

Должности

  • Заместитель заведующего лабораторией — Факультет компьютерных наук, Институт искусственного интеллекта и цифровых наук, Научно-учебная лаборатория методов анализа больших данных
  • Ведущий научный сотрудник — Факультет компьютерных наук, Институт искусственного интеллекта и цифровых наук, Научно-учебная лаборатория методов анализа больших данных
  • Доцент — Факультет компьютерных наук, Департамент больших данных и информационного поиска

Био

  • · Начал работать в НИУ ВШЭ в 2017 году.
  • · Научно-педагогический стаж: 8 лет.

Образование

  • 2020 · Кандидат наук: Московский физико-технический институт (национальный исследовательский университет)
  • 2019 · Аспирантура: Московский физико-технический институт (национальный исследовательский университет), специальность «Информатика и вычислительная техника»
  • 2015 · Магистратура: Московский физико-технический институт (государственный университет), специальность «Прикладные математика и физика», квалификация «Магистр»
  • 2013 · Бакалавриат: Московский физико-технический институт (государственный университет), специальность «Прикладные математика и физика», квалификация «Бакалавр»

Опыт работы

  • · 2014 - 2017: Исследователь-разработчик в OOO "Яндекс"

Награды и поощрения

  • · Благодарность первого проректора НИУ ВШЭ (август 2024)
  • · Благодарность НИУ ВШЭ (май 2024)
  • · Благодарность проректора НИУ ВШЭ (сентябрь 2022)
  • · Благодарность факультета компьютерных наук НИУ ВШЭ (август 2022)
  • · Надбавка за публикацию в журнале из Списка А (и приравненном к нему научном издании) (2025–2026, 2024–2025, 2023–2024)
  • · Надбавка за публикацию в международном рецензируемом научном издании (2022–2023, 2021–2022, 2020–2022, 2018–2019)
  • · Лучший преподаватель — 2024

Гранты и проекты

  • — · на соискание учёной степени кандидата наук

Конференции (1)

Показать все
  • · 2021: ACAT 2021 (Daejeon). Доклад: Robust Neural Particle Identification Models

Идентификаторы исследователя

Публикации (313)

Online Neural Networks for Change-Point Detection

2026 · ARTICLE · en

Moments when a time series changes its behavior are called change points. Occurrence of change point implies that the state of the system is altered and its timely detection might help to prevent unwanted consequences. In this paper, we present two change-point detection approaches based on neural networks and online learning. These algorithms demonstrate linear computational complexity and are suitable for change-point detection in large time series. We compare them with the best known algorithms on various synthetic and real world data sets. Experiments show that the proposed methods outperform known approaches. We also prove the convergence of the algorithms to the optimal solutions and describe conditions rendering current approach more powerful than offline one.

DOI ↗ PDF ↗

Performance Modeling of Data Storage Systems using Generative Models

2025 · ARTICLE · en

High-precision systems modeling is one of the main areas of industrial data analysis. Models of systems, their digital twins, are used to predict their behavior under various conditions. In this study, we developed several models of a storage system using machine learning-based generative models to predict performance metrics such as IOPS and latency. The models achieve prediction errors ranging from 4%–10% for IOPS and 3%–16% for latency and demonstrate high correlation (up to 0.99) with observed data. By leveraging Little’s law for validation, these models provide reliable performance estimates. Our results outperform conventional regression methods, offering a vendor-agnostic approach for simulating data storage system behavior. These findings have significant applications for predictive maintenance, performance optimization, and uncertainty estimation in storage system design.

DOI ↗ PDF ↗

Branching fraction measurement of the decay 𝐵+ →𝜓⁡(2⁢𝑆)⁢𝜙⁡(1020)⁢𝐾+

2025 · ARTICLE · en

The branching fraction of the decay 𝐵+ →𝜓⁡(2⁢𝑆)⁢𝜙⁡(1020)⁢𝐾+, relative to the topologically similar decay 𝐵+ →𝐽/𝜓⁢𝜙⁡(1020)⁢𝐾+, is measured using proton-proton collision data collected by the LHCb experiment at center-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. The ratio is found to be 0.061 ±0.004 ±0.009, where the first uncertainty is statistical and the second systematic. Using the world-average branching fraction for 𝐵+ →𝐽/𝜓⁢𝜙⁡(1020)⁢𝐾+, the branching fraction for the decay 𝐵+ →𝜓⁡(2⁢𝑆)⁢𝜙⁡(1020)⁢𝐾+ is found to be (3.0 ±0.2 ±0.5 ±0.2) ×10−6, where the first uncertainty is statistical, the second systematic, and the third is due to the branching fraction of the normalization channel.

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Angular analysis of B0 → K*0e+e− decays

2025 · ARTICLE · en

An angular analysis of B0 → K*0e+e− decays is presented using proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. The analysis is performed in the region of the dilepton invariant mass squared of 1.1–6.0 GeV2/c4. In addition, a test of lepton flavour universality is performed by comparing the obtained angular observables with those measured in B0 → K*0μ+μ− decays. In general, the angular observables are found to be consistent with the Standard Model expectations as well as with global analyses of other b → sℓ+ℓ− processes, where ℓ is either a muon or an electron. No sign of lepton-flavour-violating effects is observed.

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Search for resonance-enhanced 𝐶⁢𝑃 and angular asymmetries in the Λ+𝑐 →𝑝⁢𝜇+⁢𝜇− decay at LHCb

2025 · ARTICLE · en

The first measurement of the 𝐶⁢𝑃 asymmetry of the decay rate (𝐴𝐶⁢𝑃) and the 𝐶⁢𝑃 average (Σ⁢𝐴FB) and 𝐶⁢𝑃 asymmetry (Δ⁢𝐴FB) of the forward-backward asymmetry in the muon system of Λ+𝑐 →𝑝⁢𝜇+⁢𝜇− decays is reported. The measurement is performed using a data sample of proton-proton collisions, recorded by the LHCb experiment from 2016 to 2018 at a center-of-mass energy of 13 TeV, which corresponds to an integrated luminosity of 5.4 fb−1. The asymmetries are measured in two regions of dimuon mass near the 𝜙-meson mass peak. The dimuon-mass integrated results are 𝐴𝐶⁢𝑃 =(−1.1 ±4.0 ±0.5)%, Σ⁢𝐴FB =(3.9 ±4.0 ±0.6)%, Δ⁢𝐴FB =(3.1 ±4.0 ±0.4)%, where the first uncertainty is statistical and the second systematic. The results are consistent with the conservation of 𝐶⁢𝑃 symmetry and the Standard Model expectations.

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Evidence for 𝐵− →𝐷**0⁢𝜏−⁢𝜈_𝜏 Decays

2025 · ARTICLE · en

The first evidence for the decay 𝐵−→𝐷**0⁢𝜏−⁢‾𝜈𝜏 is obtained using proton-proton collision data collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb−1, at centre-of-mass energies of 7, 8, and 13 TeV. Here, the 𝐷**0 meson represents any of the three excited charm mesons 𝐷1⁢(2420)0, 𝐷*2⁢(2460)0, and 𝐷′1⁢(2400)0. The 𝐵− →𝐷**0⁢𝜏−⁢¯𝜈𝜏 signal is measured with a significance of 3.5⁢𝜎, including systematic uncertainties. The combined branching fraction ℬ⁡(𝐵−→𝐷**01,2⁢𝜏−⁢¯𝜈𝜏)×ℬ⁡(𝐷**01,2→𝐷*+⁢𝜋−), where 𝐷**01,2 denotes both 𝐷1⁢(2420)0 and 𝐷*2⁢(2460)0 contributions, is measured to be [0.051±0.013⁢(stat)±0.006⁢(syst)±0.009⁢(ext)]%, where the last uncertainty reflects that of the branching fraction of the normalization channel 𝐵− →𝐷**01,2⁢𝐷−𝑠(*). The ratio between the tauonic and muonic semileptonic 𝐵 decays, with the latter taken from world average values, is also determined and found to be ℛ⁡(𝐷**01,2)=0.13±0.03⁢(stat)±0.01⁢(syst)±0.02⁢(ext).

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Observation of the Λ0b → J/ψΞ−K + and Ξ0b → J/ψΞ−π+ decays

2025 · ARTICLE · en

The first observation of the Ξ0b→J/ψΞ−π+ decay and the most precise measurement of the branching fraction of the Λ0b→J/ψΞ−K+ decay are reported, using proton-proton collision data from the LHCb experiment collected in 2016--2018 at a centre-of-mass energy of 13~TeV, corresponding to an integrated luminosity of 5.4~fb−1. Using the Λ0b→J/ψΛ and Ξ0b→J/ψΞ− decays as normalisation channels, the ratios of branching fractions are measured to be: B(Λ0b→J/ψΞ−K+)B(Λ0b→J/ψΛ)=(1.17±0.14±0.08)×10−2, B(Ξ0b→J/ψΞ−π+)B(Ξ0b→J/ψΞ−)=(11.9±1.4±0.6)×10−2, where the first uncertainty is statistical and the second systematic.

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Measurement of the multiplicity dependence of Υ production ratios in pp collisions at sqrt(s) = 13 TeV

2025 · ARTICLE · en

The Υ(2S) and Υ(3S) production cross-sections are measured relative to that of the Υ(1S) meson, as a function of charged-particle multiplicity in proton-proton collisions at a centre-of-mass energy of 13 TeV. The measurement uses data collected by the LHCb experiment in 2018 corresponding to an integrated luminosity of 2 fb−1. Both the Υ(2S)-to-Υ(1S) and Υ(3S)-to-Υ(1S) cross-section ratios are found to decrease significantly as a function of event multiplicity, with the Υ(3S)-to-Υ(1S) ratio showing a steeper decline towards high multiplicity. This hierarchy is qualitatively consistent with the comover model predictions, indicating that final-state interactions play an important role in bottomonia production in high-multiplicity events.

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Search for charge-parity violation in semileptonically tagged D0 → K+π− decays

2025 · ARTICLE · en

An analysis of the flavour oscillations of the charmed neutral meson is presented. The ratio of D0 → K+π− and D0 → K−π+ decay rates is measured as a function of the decay time of the D0 meson and compared with the charge-conjugated system to search for charge-parity violation. The meson flavour at production is double-tagged by the charges of the muon and pion in the preceding and D∗(2010)+ → D0π+ decays, respectively. These decays are selected from proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of 13 TeV and corresponding to an integrated luminosity of 5.4 fb−1. The flavour oscillation parameters, relating to the differences in mass and width of the mass eigenstates, are found to be y′ = (5.8 ± 1.6) × 10−3 and (x′)2 = (0.0 ± 1.2) × 10−4. No evidence for charge-parity violation is seen either in the flavour oscillations or in the decay, where the direct charge-parity asymmetry is measured to be AD = (2.3 ± 1.7) %.

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Study of light-meson resonances decaying to 𝐾0S𝐾𝜋 in the 𝐵 →(𝐾0S𝐾𝜋)𝐾 channels

2025 · ARTICLE · en

A study is presented of 𝐵+ →𝐾0S⁢𝐾−⁢𝜋+⁢𝐾+ and 𝐵+ →𝐾0S⁢𝐾+⁢𝜋−⁢𝐾+ decays based on the analysis of proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of 9 fb−1. The 𝐾0S⁢𝐾⁢𝜋 invariant-mass distributions of both 𝐵+ decay modes show, in the 𝑚⁡(𝐾0S⁢𝐾⁢𝜋)

DOI ↗ PDF ↗

Курсы (8)