1 code implementation • 17 Aug 2021 • Yu Qiu, Yun Liu, Le Zhang, Jing Xu
The asymmetric bilateral encoder has a transformer path and a lightweight CNN path, where the two paths communicate at each encoder stage to learn complementary global contexts and local spatial details, respectively.
no code implementations • 24 Jul 2021 • Xueke Zheng, Runze Cai, Shuixin Xiao, Yu Qiu, Jun Zhang, Mian Li
A real-world application to the estimation of the vertical wheel force in a full vehicle system are, respectively, conducted to demonstrate the effectiveness of the proposed method.
no code implementations • 11 Mar 2021 • Yu Qiu, Brian R. McNamara, Tamara Bogdanovic, Kohei Inayoshi, Luis C. Ho
In this work, we use a single parameter, outflow-to-accretion mass-loading factor $m=\dot{M}_{\rm out}/\dot{M}_{\rm BH}$, to characterize the outflows that mediate the interaction between SMBHs and their hosts.
Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics High Energy Astrophysical Phenomena
1 code implementation • 10 Sep 2020 • Yun Liu, Yu-Huan Wu, Pei-Song Wen, Yu-Jun Shi, Yu Qiu, Ming-Ming Cheng
For each proposal, this MIL framework can simultaneously compute probability distributions and category-aware semantic features, with which we can formulate a large undirected graph.
Image-level Supervised Instance Segmentation Multiple Instance Learning +3
1 code implementation • 21 Apr 2020 • Yu Qiu, Yun Liu, Shijie Li, Jing Xu
On the other hand, fast training/testing and low computational cost are also necessary for quick deployment and development of COVID-19 screening systems, but traditional deep learning methods are usually computationally intensive.
1 code implementation • 31 Jan 2020 • Yu-Wei Fan, Chunyi Li, Wanmin Liu, Yu Qiu
We compute the global dimension function $\mathrm{gldim}$ on the principal component $\mathrm{Stab}^{\dag}(\mathbb{P}^2)$ of the space of Bridgeland stability conditions on $\mathbb{P}^2$.
Algebraic Geometry General Topology Representation Theory 2020: 14F08 (18G80, 32Q55)
no code implementations • 28 Dec 2018 • Yun Liu, Yu Qiu, Le Zhang, Jia-Wang Bian, Guang-Yu Nie, Ming-Ming Cheng
In this paper, we observe that the contexts of a natural image can be well expressed by a high-to-low self-learning of side-output convolutional features.
no code implementations • 30 Nov 2018 • Akishi Ikeda, Yu Qiu
As a byproduct, the result confirms the conjectural almost Frobenius structure on spaces of $q$-stability conditions for type $A$.
Algebraic Geometry Dynamical Systems Representation Theory
no code implementations • 30 Nov 2018 • Yu Qiu
This is a survey on the project `Decorated Marked Surfaces', where we introduce the decoration $\Delta$ on a marked surfaces $\mathbf{S}$, to study Calabi-Yau-2 (cluster) categories, Calabi-Yau-3 (Fukaya) categories, braid groups for quivers with potential, quadratic differentials and stability conditions.
Representation Theory Category Theory Geometric Topology
no code implementations • 2 Jul 2018 • Akishi Ikeda, Yu Qiu
We introduce $q$-stability conditions $(\sigma, s)$ on Calabi-Yau-$\mathbb{X}$ categories $\mathcal{D}_\mathbb{X}$, where $\sigma$ is a stability condition on $\mathcal{D}_\mathbb{X}$ and $s$ a complex number.
Algebraic Geometry Category Theory Representation Theory
no code implementations • 29 Jun 2018 • Yu Qiu
We study the global dimension function $\operatorname{gldim}\colon\operatorname{Aut}\backslash\operatorname{Stab}\mathcal{D}/\mathbb{C}\to\mathbb{R}_{\ge0}$ on a quotient of the space of Bridgeland stability conditions on a triangulated category $\mathcal{D}$ as well as Toda's Gepner equatio $\Phi(\sigma)=s\cdot\sigma$ for some $\sigma\in\operatorname{Stab}\mathcal{D}$ and $(\Phi, s)\in\operatorname{Aut}\mathcal{D}\times\mathbb{C}$.
Representation Theory Algebraic Geometry
no code implementations • 31 May 2018 • Yu Qiu
First, we review the study of topological structure of `finite type' components of spaces of Bridgeland's stability conditions on triangulated categories.
Representation Theory Algebraic Geometry Geometric Topology
no code implementations • 30 Apr 2018 • Alastair King, Yu Qiu
In the case that arises from an (unpunctured) marked surface, where the exchange graph is modelled on the graph of triangulations of the marked surface, we show that the universal cover of this groupoid can be constructed using the covering graph of triangulations of the surface with extra decorations.
Geometric Topology Algebraic Geometry Dynamical Systems Representation Theory
no code implementations • 31 Mar 2018 • Aslak Bakke Buan, Yu Qiu, Yu Zhou
As an application, we show that the spherical twist group $\operatorname{ST}(\mathbf{S}_\bigtriangleup)$ associated to $\mathcal{D}_{fd}(\mathbf{S}_\bigtriangleup)$ acts faithfully on its space of stability conditions.
Representation Theory Rings and Algebras
no code implementations • 27 Dec 2017 • Yu Qiu
We survey and compare various generalizations of braid groups for quivers with superpotential and focus on the cluster braid groups, which are introduced in a joint work with A.~King.
Representation Theory
no code implementations • 14 Nov 2014 • Yu Qiu, Yu Zhou
We study the 3-Calabi-Yau categories $\mathcal{D}$ arising from quivers with potential associated to a decorated marked surface $\mathbf{S}_\bigtriangleup$ introduced by the first author.
Representation Theory Category Theory Geometric Topology
no code implementations • 22 Jul 2014 • Yu Qiu, Jon Woolf
We prove that any `finite-type' component of a stability space of a triangulated category is contractible.
Algebraic Geometry Representation Theory 18E30 (Primary) 14F05, 16J99 (Secondary)
no code implementations • 10 Jun 2014 • Tom Bridgeland, Yu Qiu, Tom Sutherland
We compute the space of stability conditions on the CY$_n$ version of the $A_2$ quiver for all $n$ and relate it to the Frobenius-Saito structure on the unfolding space of the $A_2$ singularity.
Algebraic Geometry Differential Geometry Representation Theory
no code implementations • 31 Oct 2013 • Yu Qiu, Yu Zhou
We study the cluster categories arising from marked surfaces (with punctures and non-empty boundaries).
Representation Theory Geometric Topology 16G20, 18E30, 16E30, 57M50 (primary), 16G70 (secondary)
no code implementations • 30 Nov 2012 • Thomas Brüstle, Yu Qiu
We give a geometric realization, the tagged rotation, of the AR-translation on the generalized cluster category associated to a surface $\mathbf{S}$ with marked points and non-empty boundary, which generalizes Br\"{u}stle-Zhang's result for the puncture free case.
Representation Theory Geometric Topology
no code implementations • 30 Sep 2012 • Wen Chang, Yu Qiu
the principal component $\operatorname{Stab}^\circ\mathcal{D}(\Gamma\mathbb{S})$) of the space of the stability conditions of $\mathcal{D}(\mathbb{S})$ (resp.
Representation Theory
no code implementations • 30 Apr 2012 • Yu Qiu
We describe an induced sequence of simple (backward) tilting in the bounded derived category $\mathcal{D}(Q)$, starting from the standard heart $\mathcal{H}_Q=\operatorname{mod}\mathbf{k}Q$ and ending at another heart $\mathcal{H}_\mathbf{s}$ in $\mathcal{D}(Q)$.
Combinatorics Representation Theory
no code implementations • 28 Feb 2012 • Yu Qiu
We classify the Ext-quivers of hearts in the bounded derived category D(A_n) and the finite-dimensional derived category D(\Gamma_N A_n) of the Calabi-Yau-N Ginzburg algebra D(\Gamma_N A_n).
Representation Theory Combinatorics
no code implementations • 3 Nov 2011 • Yu Qiu
We study fundamental group of the exchange graphs for the bounded derived category D(Q) of a Dynkin quiver Q and the finite-dimensional derived category D(\Gamma_N Q) of the Calabi-Yau-N Ginzburg algebra associated to Q.
Algebraic Geometry Representation Theory
no code implementations • 13 Sep 2011 • Alastair King, Yu Qiu
We study the oriented exchange graph $\textrm{EG}^\circ(\Gamma_{N}\, Q)$ of reachable hearts in the finite-dimensional derived category $\mathcal{D}(\Gamma_{N}\, Q)$ of the CY-$N$ Ginzburg algebra $\Gamma_{N}Q$ associated to an acyclic quiver $Q$.
Representation Theory