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Pengpeng Wang: 基于树割映射的网络健壮性增强算法
Speaker: Pengpeng Wang（Henan University of Technology) Time: 16:20-17:20 (Time in Beijing) September 15, 2023 (Friday) Venue: 518, Research Building 4 Abstract: 在大型稀疏网络中，少数几条边的随机故障可能导致网络断开，为了提高网络健壮性，可以选择性的保护特定边从而使整个网络的连通性保持到一定水平，然而资源总是有限的，不可能保护所有的边。我们设计了一种快速的算法，即通过深度遍历树快速定位到较小的割，并对这些割的边进行有选择性的保护，从而提高网络健壮性，传统算法利用线性规划，时间较慢，并且不能适用于大型网络，实验表明我们的算法能够抵御 99.99%的随机故障，有较好的加速效果。 Speaker Bio: 汪鹏鹏现就读于河南工业大学信息科学与工程学院，研究方向为最小割，网络健壮性，稀疏割算法等。
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Yan Gu:Recent Advances in Parallel Algorithm Design
Speaker: Yan Gu（University of California, Riverside) Time: 16:20-17:20 (Time in Beijing) September 8, 2023 (Friday) Venue: 518, Research Building 4 Abstract: This talk will cover some new advances in recent parallel algorithm research. We will introduce a few new parallel algorithms on classic graph problems such as single-source shortest paths (the rho-stepping and the delta*-stepping […]
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Chao Xu: Matroid Base with Congruency Constraint
Speaker: Chao Xu (University of Electronic Science and Technology of China) Time: 16:20-17:20 (Time in Beijing) June 9, 2023 (Friday) Venue: 518, Research Building 4 Abstract: Let $k$ be an integer and $M$ a matroid on groundset $E$.There is a label function $\ell:E\to [k]$ that assigns a label to all elements. We aim to identify […]
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Yuhang Guo: Characterization of Monotonic Allocation in Multi-unit Diffusion Auction
Speaker: Yuhang Guo (University of Electronic Science and Technology of China) Time: 16:20-17:20 (Time in Beijing) June 2, 2023 (Friday) Venue: 518, Research Building 4 Abstract: Designing strategyproof mechanisms in multi-unit diffusion auctions has posed a significant challenge, as each agent’s allocation and price can be easily influenced by their invitees and siblings. In our […]
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Yuyang Zhuge, Xiaoyang Gong: Automatic Structures
Speaker: Yuyang Zhuge, Xiaoyang Gong(University of Electronic Science and Technology of China) Time: 16:20-17:20 (Time in Beijing) May 26, 2023 (Friday) Venue: 518, Research Building 4 Abstract: We introduce automatic structures. We provide examples and discuss several research directions. One direction of research is the isomorphism problem. The problem asks to design an algorithm that […]
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Yu Cong: Trade-off Curve Computation for Incentive Allocation
Speaker: Yu Cong (University of Electronic Science and Technology of China) Time: 16:20-17:20 (Time in Beijing) May 19, 2023 (Friday) Venue: 518, Research Building 4 Abstract: We consider a large-scale incentive allocation problem where the entire trade-off curve between budget and profit has to be maintained approximately at all time. The application originally comes from […]
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Zibo Zhou: Two-dimensional irregular bin packing problem
Speaker: Zibo Zhou (University of Electronic Science and Technology of China) Time: 16:20-17:20 (Time in Beijing) April 21, 2023 (Friday) Venue: 518, Research Building 4 Abstract: We proposes a local search combined with DJD heuristic approach for the two-dimensional irregular bin packing problem (2DIBPP) with limited rotations. The objective of 2DIBPP is to pack a […]
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Multi-unit Auction over a Social Network
Speaker: Yuan Fang (University of Electronic Science and Technology of China) Time: 16:20-17:20 (Time in Beijing) April 14, 2023 (Friday) Venue: 518, Research Building 4 Abstract: Diffusion auction is an emerging business model where a seller aims to incentivise buyers in a social network to diffuse the auction information thereby attracting potential buyers. We focus […]
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A $(2+\epsilon)k$-vertex kernel for Edge Triangle Deletion Problem
Speaker: Yuxi Liu (University of Electronic Science and Technology of China) Time: 16:20-17:20 (Time in Beijing) April 7, 2023 (Friday) Venue: 518, Research Building 4 Abstract: The Edge Triangle Deletion problem asks whether we can delete at most edges from the input graph such that there is no triangle in the remaining graph. This problem […]
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Zimo Sheng: Improved Kernels for Edge Triangle Covering Problem
Speaker: Zimo Sheng (University of Electronic Science and Technology of China) Time: 16:20-17:20 (Time in Beijing) March 31, 2023 (Friday) Venue: 518, Research Building 4 Abstract: Kernelization is a concept of data preprocessing which is possible to derive upper and lower bounds on sizes of reduced instance. Edge Triangle Covering is an important NP-hard problem […]