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Results for "Jianwei Huang"

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Cutting Down Training Memory by Re-fowardingJul 31 2018May 23 2019Deep Neural Networks(DNNs) require huge GPU memory when training on modern image/video databases. Unfortunately, the GPU memory in off-the-shelf devices is always finite, which limits the image resolutions and batch sizes that could be used for better ... More
Analysis of variance, coefficient of determination and $F$-test for local polynomial regressionOct 27 2008This paper provides ANOVA inference for nonparametric local polynomial regression (LPR) in analogy with ANOVA tools for the classical linear regression model. A surprisingly simple and exact local ANOVA decomposition is established, and a local R-squared ... More
Optimal Pricing and Admission Control for Heterogeneous Secondary UsersApr 07 2016This paper studies how to maximize a spectrum database operator's expected revenue in sharing spectrum to secondary users, through joint pricing and admission control of spectrum resources. A unique feature of our model is the consideration of the stochastic ... More
Two-sided Matching Based Cooperative Spectrum SharingApr 13 2016Dynamic spectrum access (DSA) can effectively improve the spectrum efficiency and alleviate the spectrum scarcity, by allowing unlicensed secondary users (SUs) to access the licensed spectrum of primary users (PUs) opportunistically. Cooperative spectrum ... More
Providing Long-Term Participation Incentive in Participatory SensingJan 11 2015Feb 24 2016Providing an adequate long-term participation incentive is important for a participatory sensing system to maintain enough number of active users (sensors), so as to collect a sufficient number of data samples and support a desired level of service quality. ... More
HySIM: A Hybrid Spectrum and Information Market for TV White Space NetworksJan 11 2015Feb 24 2016We propose a hybrid spectrum and information market for a database-assisted TV white space network, where the geo-location database serves as both a spectrum market platform and an information market platform. We study the inter- actions among the database ... More
Spectrum Reservation Contract Design in TV White Space NetworksNov 02 2015In this paper, we study a broker-based TV white space market, where unlicensed white space devices (WSDs) purchase white space spectrum from TV licensees via a third-party geo-location database (DB), which serves as a spectrum broker, reserving spectrum ... More
Competitive Charging Station Pricing for Plug-in Electric VehiclesNov 24 2015Nov 28 2015This paper considers the problem of charging station pricing and plug-in electric vehicles (PEVs) station selection. When a PEV needs to be charged, it selects a charging station by considering the charging prices, waiting times, and travel distances. ... More
Dynamic Profit Maximization of Cognitive Mobile Virtual Network OperatorDec 17 2012We study the profit maximization problem of a cognitive virtual network operator in a dynamic network environment. We consider a downlink OFDM communication system with various network dynamics, including dynamic user demands, uncertain sensing spectrum ... More
Scalable Mobile Crowdsensing via Peer-to-Peer Data SharingMay 15 2017Mobile crowdsensing (MCS) is a new paradigm of sensing by taking advantage of the rich embedded sensors of mobile user devices. However, the traditional server-client MCS architecture often suffers from the high operational cost on the centralized server ... More
Critical exponents of finite temperature chiral phase transition in soft-wall AdS/QCD modelsOct 16 2018Criticality of chiral phase transition at finite temperature is investigated in a soft-wall AdS/QCD model with $SU_L(N_f)\times SU_R(N_f)$ symmetry, especially for $N_f=2,3$ and $N_f=2+1$. It is shown that in quark mass plane($m_{u/d}-m_s$) chiral phase ... More
Public Wi-Fi Monetization via AdvertisingSep 07 2016Feb 21 2017The proliferation of public Wi-Fi hotspots has brought new business potentials for Wi-Fi networks, which carry a significant amount of global mobile data traffic today. In this paper, we propose a novel Wi-Fi monetization model for venue owners (VOs) ... More
Economic Viability of Data Trading with RolloverMay 16 2019Mobile Network Operators (MNOs) are providing more flexible wireless data services to attract subscribers and increase revenues. For example, the data trading market enables user-flexibility by allowing users to sell leftover data to or buy extra data ... More
How to Price Fresh DataApr 15 2019Apr 22 2019We introduce the concept of a fresh data market, in which a destination user requests, and pays for, fresh data updates from a source provider. Data freshness is captured by the {\it age of information} (AoI) metric, defined as the time elapsed since ... More
Proactive Demand Response for Data Centers: A Win-Win SolutionNov 02 2015In order to reduce the energy cost of data centers, recent studies suggest distributing computation workload among multiple geographically dispersed data centers, by exploiting the electricity price difference. However, the impact of data center load ... More
Incentivizing Energy Trading for Interconnected MicrogridsSep 24 2016In this paper, we study the interactions among interconnected autonomous microgrids, and propose a joint energy trading and scheduling strategy. Each interconnected microgrid not only schedules its local power supply and demand, but also trades energy ... More
Cooperative Planning of Renewable Generations for Interconnected MicrogridsApr 07 2016We study the renewable energy generations in Hong Kong based on realistic meteorological data, and find that different renewable sources exhibit diverse time-varying and location-dependent profiles. To efficiently explore and utilize the diverse renewable ... More
Joint Investment and Operation of MicrogridNov 06 2015In this paper, we propose a theoretical framework for the joint optimization of investment and operation of a microgrid, taking the impact of energy storage, renewable energy integration, and demand response into consideration. We first study the renewable ... More
Polarization effect of zinc on the region 1-16 of amyloid-beta peptide: a molecular dynamics studyJan 08 2013Zinc is found saturated in the deposited Amyloid-beta (AB) peptide plaques in brains of patients subjected to Alzheimer disease (AD). Zinc binding to AB promotes aggregations, including the toxic soluble AB species. Up to now, only the region 1-16 of ... More
Motivating Smartphone Collaboration in Data Acquisition and Distributed ComputingJan 26 2014This paper analyzes and compares different incentive mechanisms for a master to motivate the collaboration of smartphone users on both data acquisition and distributed computing applications. To collect massive sensitive data from users, we propose a ... More
Price Differentiation for Communication NetworksNov 04 2010May 06 2013We study the optimal usage-based pricing problem in a resource-constrained network with one profit-maximizing service provider and multiple groups of surplus-maximizing users. With the assumption that the service provider knows the utility function of ... More
Cutting Down Training Memory by Re-fowardingJul 31 2018Jan 05 2019Deep Neutral Networks(DNNs) require huge GPU memory when training on modern image/video databases. Unfortunately, the GPU memory as a hardware resource is always finite, which limits the image resolution, batch size, and learning rate that could be used ... More
Achieving an Efficient and Fair Equilibrium Through TaxationAug 10 2017It is well known that a game equilibrium can be far from efficient or fair, due to the misalignment between individual and social objectives. The focus of this paper is to design a new mechanism framework that induces an efficient and fair equilibrium ... More
The boundness of weighted Coxeter groups of rank 3Jul 08 2016We prove that a weighted Coxeter group (W,S,L) is bounded if the rank of W is 3.
DAWN: Delay-Aware Wi-Fi Offloading and Network SelectionFeb 27 2015To accommodate the explosive growth in mobile data traffic, both mobile cellular operators and mobile users are increasingly interested in offloading the traffic from cellular networks to Wi-Fi networks. However, previously proposed offloading schemes ... More
Time and Location Aware Mobile Data PricingNov 12 2015Mobile users' correlated mobility and data consumption patterns often lead to severe cellular network congestion in peak hours and hot spots. This paper presents an optimal design of time and location aware mobile data pricing, which incentivizes users ... More
Multimedia Crowdsourcing with Bounded Rationality: A Cognitive Hierarchy ProspectiveApr 22 2019In multimedia crowdsourcing, the requester's quality requirements and reward decisions will affect the workers' task selection strategies and the quality of their multimedia contributions. In this paper, we present a first study on how the workers' bounded ... More
Investment and Pricing with Spectrum Uncertainty: A Cognitive Operator's PerspectiveDec 16 2009Jun 28 2010This paper studies the optimal investment and pricing decisions of a cognitive mobile virtual network operator (C-MVNO) under spectrum supply uncertainty. Compared with a traditional MVNO who often leases spectrum via long-term contracts, a C-MVNO can ... More
Competition with Dynamic Spectrum LeasingMar 29 2010This paper presents a comprehensive analytical study of two competitive cognitive operators' spectrum leasing and pricing strategies, taking into account operators' heterogeneity in leasing costs and users' heterogeneity in transmission power and channel ... More
Multimedia Crowdsourcing with Bounded Rationality: A Cognitive Hierarchy PerspectiveApr 22 2019Apr 25 2019In multimedia crowdsourcing, the requester's quality requirements and reward decisions will affect the workers' task selection strategies and the quality of their multimedia contributions. In this paper, we present a first study on how the workers' bounded ... More
Effective Carrier Sensing in CSMA Networks under Cumulative InterferenceDec 11 2009This paper proposes and investigates the concept of a safe carrier-sensing range that can guarantee interference safe (also termed hidden-node-free) transmissions in CSMA networks under the cumulative interference model. Compared with the safe carrier-sensing ... More
MAPEL: Achieving Global Optimality for a Non-convex Wireless Power Control ProblemMay 17 2008Jun 10 2008Achieving weighted throughput maximization (WTM) through power control has been a long standing open problem in interference-limited wireless networks. The complicated coupling between the mutual interferences of links gives rise to a non-convex optimization ... More
Duopoly Competition for Mobile Data Plans with Time FlexibilityMar 26 2019The growing competition drives the mobile network operators (MNOs) to explore adding time flexibility to the traditional data plan, which consists of a monthly subscription fee, a data cap, and a per-unit fee for exceeding the data cap. The rollover data ... More
Exploring Time Flexibility in Wireless Data PlansAug 31 2018Oct 04 2018Recently, the mobile network operators (MNOs) are exploring more time flexibility with the rollover data plan, which allows the unused data from the previous month to be used in the current month. Motivated by this industry trend, we propose a general ... More
MINE GOLD to Deliver Green Cognitive CommunicationsSep 14 2015Geo-location database-assisted TV white space network reduces the need of energy-intensive processes (such as spectrum sensing), hence can achieve green cognitive communication effectively. The success of such a network relies on a proper business model ... More
Explicit formulae for spectral norms of circulant-type matrices with some given entriesMay 24 2013In this paper we investigate the spectral norm for circulant matrices, whose entries are modified Fibonacci numbers and Lucas numbers. We obtain the identity estimations for the spectral norms. Some numerical test results are listed to verify the results ... More
Characteristic Classes on Grassmann ManifoldsSep 04 2008In this paper, we use characteristic classes of the canonical vector bundles and the Poincar\' {e} dualality to study the structure of the real homology and cohomology groups of oriented Grassmann manifold $G(k, n)$. Show that for $k=2$ or $n\leq 8$, ... More
A Novel Structure for Double Negative NIMs towards UV Spectrum with High FOMJun 25 2010Jul 06 2012A novel ring structure is proposed for double negative NIMs at visible light spectrum with high FOM (e.g. about 11 at a wavelength of 583 nm) and low loss. Besides the effective medium theory, an equivalent circuit model is also given to explain physically ... More
Competition of Wireless Providers for Atomic UsersJul 07 2010We study a problem where wireless service providers compete for heterogenous wireless users. The users differ in their utility functions as well as in the perceived quality of service of individual providers. We model the interaction of an arbitrary number ... More
Delay Sensitive Communications over Cognitive Radio NetworksJan 15 2012Supporting the quality of service of unlicensed users in cognitive radio networks is very challenging, mainly due to dynamic resource availability because of the licensed users' activities. In this paper, we study the optimal admission control and channel ... More
Cooperative Wi-Fi Deployment: A One-to-Many Bargaining FrameworkAug 05 2016We study the cooperation of the mobile network operator (MNO) and the venue owners (VOs) on the public Wi-Fi deployment. We consider a one-to-many bargaining framework, where the MNO bargains with VOs sequentially to determine where to deploy Wi-Fi and ... More
Safe Carrier Sensing Range in CSMA Network under Physical Interference ModelJan 23 2009In this paper, we study the setting of carrier-sensing range in 802.11 networks under the (cumulative) physical interference model. Specifically, we identify a carrier-sensing range that will prevent collisions in 802.11 networks due to carrier-sensing ... More
Multi-Cap Optimization for Wireless Data Plans with Time FlexibilityMay 15 2019An effective way for a Mobile network operator (MNO) to improve its revenue is price discrimination, i.e., providing different combinations of data caps and subscription fees. Rollover data plan (allowing the unused data in the current month to be used ... More
Enabling Edge Cooperation in Tactile Internet via 3C Resource SharingSep 22 2018Tactile Internet often requires (i) the ultra-reliable and ultra-responsive network connection and (ii) the proactive and intelligent actuation at edge devices. A promising approach to address these two requirements is to enable mobile edge devices to ... More
Hybrid metal-dielectric ring resonators for optical magnetic metamaterials down to ultraviolet rangeDec 02 2010Oct 02 2012In this paper, we derive a model from Maxwell equations for the magnetic resonance of split-ring resonators. Using this model we revisit the scaling of split-ring resonators. Inspired by our model, we propose a new type of split-hybrid metal-dielectric ... More
Spectrum Investment under Uncertainty: A Behavioral Economics PerspectiveAug 29 2016In this paper, we study a virtual wireless operator's spectrum investment problem under spectrum supply uncertainty. To obtain enough spectrum resources to meet its customer demands, the virtual operator can either sense for the temporarily unused spectrum ... More
On Competing Wireless Service ProvidersMar 11 2009We consider a situation where wireless service providers compete for heterogenous wireless users. The users differ in their willingness to pay as well as in their individual channel gains. We prove existence and uniqueness of the Nash equilibrium for ... More
Pricing for local and global WiFi marketsJul 16 2014This paper analyzes two pricing schemes commonly used in WiFi markets: the flat-rate and the usage-based pricing. The flat-rate pricing encourages the maximum usage, while the usage-based pricing can flexibly attract more users especially those with low ... More
Intrinsically discrete channel-gating dynamics at small membrane patch area for the Hodgkin-Huxley neuronsMar 04 2013Mar 17 2013This paper has been withdrawn by the author due to some incorrect presentation in the results and discussion part.
When Tesla Meets Nash: Wireless Power Provision as a Public GoodApr 15 2019The wireless power transfer (WPT) technology enables a cost-effective and sustainable energy supply in wireless networks. However, the broadcast nature of wireless signals makes them non-excludable public goods, which leads to potential free-riders among ... More
An Integrated Spectrum and Information Market for Green Cognitive CommunicationsMar 16 2016A database-assisted TV white space network can achieve the goal of green cognitive communication by effectively reducing the energy consumption in cognitive communications. The success of such a novel network relies on a proper business model that provides ... More
Contract-Based Cooperative Spectrum SharingFeb 21 2011Providing proper economic incentives is essential for the success of dynamic spectrum sharing. Cooperative spectrum sharing is one effective way to achieve this goal. In cooperative spectrum sharing, secondary users (SUs) relay traffics for primary users ... More
An Auction Approach to Distributed Power Allocation for Multiuser Cooperative NetworksOct 17 2012This paper studies a wireless network where multiple users cooperate with each other to improve the overall network performance. Our goal is to design an optimal distributed power allocation algorithm that enables user cooperation, in particular, to guide ... More
Capacity Allocation and Pricing Strategies for Wireless Femtocell ServicesMay 06 2012Indoor cell phone users often suffer from poor connectivity. One promising solution, femtocell technology, has been rapidly developed and deployed over the past few years. One of the biggest challenges for femtocell deployment is lack of a clear business ... More
Electronic Structure and Superconductivity of FeSe-Related SuperconductorsApr 17 2015Apr 20 2015The FeSe superconductor and its related systems have attracted much attention in the iron-based superconductors owing to their simple crystal structure and peculiar electronic and physical properties. The bulk FeSe superconductor has a superconducting ... More
On reflection from a half-space with negative real permittivity and permeability: Time-domain and frequency-domain resultsFeb 03 2002The reflection of a normally incident wideband pulse by a half-space whose permittivity and permeability obey the one-resonance Lorentz model is calculated. The results are compared with those from frequency-domain reflection analysis. In the spectral ... More
Blow-up of a critical Sobolev norm for energy-subcritical and energy-supercritical wave equationsMar 15 2017This work concerns the semilinear wave equation in three space dimensions with a power-like nonlinearity which is greater than cubic, and not quintic (i.e. not energy-critical). We prove that a scale-invariant Sobolev norm of any non-scattering solution ... More
Optical Magnetic Response in a Single Metal NanobrickFeb 14 2011Anti-symmetric localized surface plasmons are demonstrated on a single silver nanostrip sandwiched by SiC layers. By employing the resonance of anti-symmetric localized surface plasmons, we enable single metal nanobricks to produce optical magnetism, ... More
Power-Delay Tradeoff with Predictive Scheduling in Integrated Cellular and Wi-Fi NetworksDec 20 2015Dec 29 2015The explosive growth of global mobile traffic has lead to a rapid growth in the energy consumption in communication networks. In this paper, we focus on the energy-aware design of the network selection, subchannel, and power allocation in cellular and ... More
Statistical inferences for functional dataAug 16 2007With modern technology development, functional data are being observed frequently in many scientific fields. A popular method for analyzing such functional data is ``smoothing first, then estimation.'' That is, statistical inference such as estimation ... More
Auction-Based Coopetition between LTE Unlicensed and Wi-FiSep 07 2016Motivated by the recent efforts in extending LTE to the unlicensed spectrum, we propose a novel spectrum sharing framework for the coopetition (i.e., cooperation and competition) between LTE and Wi-Fi in the unlicensed band. Basically, the LTE network ... More
Hybrid Pricing for Mobile Collaborative Internet AccessSep 09 2018Mobile Collaborative Internet Access (MCA) enables mobile users to share their Internet through flexible tethering arrangements. This can potentially make better use of network resources. However, from a mobile network operator's (MNO's) viewpoint, it ... More
Electrical Vehicle Charging Station Profit Maximization: Admission, Pricing, and Online SchedulingMay 05 2017Sep 07 2017The rapid emergence of electric vehicles (EVs) demands an advanced infrastructure of publicly accessible charging stations that provide efficient charging services. In this paper, we propose a new charging station operation mechanism, the JoAP, which ... More
Technical Report for "Incentivizing Wi-Fi Network Crowdsourcing: A Contract Theoretic Approach"Feb 26 2018Feb 28 2018Crowdsourced wireless community network enables individual users to share their private Wi-Fi access points (APs) with each other, hence can achieve a large Wi-Fi coverage with a small deployment cost via crowdsourcing. This paper presents a novel contract-based ... More
Combining Spot and Futures Markets: A Hybrid Market Approach to Dynamic Spectrum AccessMay 28 2014Jul 08 2016Dynamic spectrum access is a new paradigm of secondary spectrum utilization and sharing. It allows unlicensed secondary users (SUs) to exploit opportunistically the under-utilized licensed spectrum. Market mechanism is a widely-used promising means to ... More
Efficient and Fair Collaborative Mobile Internet AccessDec 15 2016The surging global mobile data traffic challenges the economic viability of cellular networks and calls for innovative solutions to reduce the network congestion and improve user experience. In this context, user-provided networks (UPNs), where mobile ... More
Distributed and Optimal Reduced Primal-Dual Algorithm for Uplink OFDM Resource AllocationDec 22 2010Orthogonal Frequency Division Multiplexing (OFDM) is the key component of many emerging broadband wireless access standards. The resource allocation in OFDM uplink, however, is challenging due to heterogeneity of users' Quality of Service requirements, ... More
A Game-Theoretic Analysis of User Behaviors in Crowdsourced Wireless Community NetworksMar 05 2015Feb 24 2016A crowdsourced wireless community network can effectively alleviate the limited coverage issue of Wi-Fi access points (APs), by encouraging individuals (users) to share their private residential Wi-Fi APs with each other. This paper presents the first ... More
Incentive Design and Market Evolution of Mobile User-Provided NetworksFeb 23 2015Apr 19 2015An operator-assisted user-provided network (UPN) has the potential to achieve a low cost ubiquitous Internet connectivity, without significantly increasing the network infrastructure investment. In this paper, we consider such a network where the network ... More
Performance Bound Analysis for Crowdsourced Mobile Video StreamingMay 21 2018Adaptive bitrate (ABR) streaming enables video users to adapt the playing bitrate to the real-time network conditions to achieve the desirable quality of experience (QoE). In this work, we propose a novel crowdsourced streaming framework for multi-user ... More
Multi-User Cooperative Mobile Video Streaming: Performance Analysis and Online Mechanism DesignMay 21 2018Adaptive bitrate streaming enables video users to adapt their playing bitrates to the real-time network conditions, hence achieving the desirable quality-of-experience (QoE). In a multi-user wireless scenario, however, existing single-user based bitrate ... More
Hybrid Pricing for Mobile Collaborative Internet AccessSep 09 2018Apr 09 2019Mobile Collaborative Internet Access (MCA) enables mobile users to share their Internet through flexible tethering arrangements. This can potentially make better use of network resources. However, from a mobile network operator's (MNO's) viewpoint, it ... More
Auction-based Resource Allocation for Multi-relay Asynchronous Cooperative NetworksJan 20 2008Resource allocation is considered for cooperative transmissions in multiple-relay wireless networks. Two auction mechanisms, SNR auctions and power auctions, are proposed to distributively coordinate the allocation of power among multiple relays. In the ... More
Public Wi-Fi Monetization via AdvertisingSep 07 2016There has been a proliferation of public Wi-Fi hotspots that serve a significant amount of global mobile traffic today. In this paper, we propose a general Wi-Fi monetization model for public Wi-Fi hotspots deployed by venue owners (VOs), who generate ... More
Pricing for Collaboration Between Online Apps and Offline VenuesMar 26 2019An increasing number of mobile applications (abbrev. apps), like Pokemon Go and Snapchat, reward the users who physically visit some locations tagged as POIs (places-of-interest) by the apps. We study the novel POI-based collaboration between apps and ... More
Spectrum Sharing as Network Congestion GamesDec 17 2009Dec 23 2009This paper has been withdrawn by the first author due to incomplete bibliography and incorporation of multiple formats in the same file.
Spectrum Sharing as Spatial Congestion GamesNov 24 2010In this paper, we present and analyze the properties of a new class of games - the spatial congestion game (SCG), which is a generalization of the classical congestion game (CG). In a classical congestion game, multiple users share the same set of resources ... More
Auction-Based Coopetition between LTE Unlicensed and Wi-FiSep 07 2016Nov 08 2016Motivated by the recent efforts in extending LTE to the unlicensed spectrum, we propose a novel spectrum sharing framework for the coopetition (i.e., cooperation and competition) between LTE and Wi-Fi in the unlicensed band. Basically, the LTE network ... More
How to Price Fresh DataApr 15 2019We introduce the concept of a fresh data market, in which a destination user requests, and pays for, fresh data updates from a source provider. Data freshness is captured by the age of information (AoI) metric, defined as the time elapsed since the latest ... More
Distributed Time-Sensitive Task Selection in Mobile CrowdsensingMar 20 2015With the rich set of embedded sensors installed in smartphones and the large number of mobile users, we witness the emergence of many innovative commercial mobile crowdsensing applications that combine the power of mobile technology with crowdsourcing ... More
Congestion-Aware Distributed Network Selection for Integrated Cellular and Wi-Fi NetworksMar 01 2017Intelligent network selection plays an important role in achieving an effective data offloading in the integrated cellular and Wi-Fi networks. However, previously proposed network selection schemes mainly focused on offloading as much data traffic to ... More
Attack Prevention for Collaborative Spectrum Sensing in Cognitive Radio NetworksSep 05 2011Collaborative spectrum sensing can significantly improve the detection performance of secondary unlicensed users (SUs). However, the performance of collaborative sensing is vulnerable to sensing data falsification attacks, where malicious SUs (attackers) ... More
Auction-Based Distributed Resource Allocation for Cooperation Transmission in Wireless NetworksAug 04 2007Cooperative transmission can greatly improve communication system performance by taking advantage of the broadcast nature of wireless channels. Most previous work on resource allocation for cooperation transmission is based on centralized control. In ... More
Economic Analysis of Crowdsourced Wireless Community NetworksAug 31 2016Crowdsourced wireless community networks can effectively alleviate the limited coverage issue of Wi-Fi access points (APs), by encouraging individuals (users) to share their private residential Wi-Fi APs with others. In this paper, we provide a comprehensive ... More
Mobile Data Trading: Behavioral Economics Analysis and Algorithm DesignFeb 09 2017Motivated by the recently launched mobile data trading markets (e.g., China Mobile Hong Kong's 2nd exChange Market), in this paper we study the mobile data trading problem under the future data demand uncertainty. We introduce a brokerage-based market, ... More
Joint Scheduling and Power Allocations for Traffic Offloading via Dual-ConnectivitySep 30 2015With the rapid growth of mobile traffic demand, a promising approach to relieve cellular network congestion is to offload users' traffic to small-cell networks. In this paper, we investigate how the mobile users (MUs) can effectively offload traffic by ... More
Parametric Prediction from Parametric AgentsFeb 24 2016We consider a problem of prediction based on opinions elicited from heterogeneous rational agents with private information. Making an accurate prediction with a minimal cost requires a joint design of the incentive mechanism and the prediction algorithm. ... More
Bargaining-based Mobile Data OffloadingMay 22 2014May 26 2014The unprecedented growth of mobile data traffic challenges the performance and economic viability of today's cellular networks, and calls for novel network architectures and communication solutions. Data offloading through third-party WiFi or femtocell ... More
Data-Centric Mobile CrowdsensingMay 17 2017Mobile crowdsensing (MCS) is a promising sensing paradigm that leverages the diverse embedded sensors in massive mobile devices. A key objective in MCS is to efficiently schedule mobile users to perform multiple sensing tasks. Prior work mainly focused ... More
Common Electronic Origin of Superconductivity in (Li,Fe)OHFeSe Bulk Superconductor and Single-Layer FeSe/SrTiO3 FilmsMay 23 2015The mechanism of high temperature superconductivity in the iron-based superconductors remains an outstanding issue in condensed matter physics. The electronic structure, in particular the Fermi surface topology, is considered to play an essential role ... More
Randomized Complete Pivoting for Solving Symmetric Indefinite Linear SystemsSep 30 2017The Bunch-Kaufman algorithm and Aasen's algorithm are two of the most widely used methods for solving symmetric indefinite linear systems, yet they both are known to suffer from occasional numerical instability due to potentially exponential element growth ... More
Adaptive Semantic Segmentation with a Strategic Curriculum of Proxy LabelsNov 08 2018Training deep networks for semantic segmentation requires annotation of large amounts of data, which can be time-consuming and expensive. Unfortunately, these trained networks still generalize poorly when tested in domains not consistent with the training ... More
Improved variable coefficient square functions and local smoothing of Fourier integral operatorsJan 06 2019Jan 21 2019We establish certain square function estimates for a class of oscillatory integral operators with homogeneous phase functions. These results are employed to deduce a refinement of a previous result of Mockenhaupt Seeger and Sogge \cite{MSS-jams} on the ... More
On local smoothing problems and Stein's maximal spherical meansJun 01 2016Jul 27 2017It is proved that the local smoothing conjecture for wave equations implies certain improvements on Stein's analytic family of maximal spherical means. Some related problems are also discussed.
Inter-Session Network Coding with Strategic Users: A Game-Theoretic Analysis of Network CodingApr 19 2009A common assumption in the existing network coding literature is that the users are cooperative and non-selfish. However, this assumption can be violated in practice. In this paper, we analyze inter-session network coding in a wired network using game ... More
EG-GAN: Cross-Language Emotion Gain Synthesis based on Cycle-Consistent Adversarial NetworksMay 27 2019Despite remarkable contributions from existing emotional speech synthesizers, we find that these methods are based on Text-to-Speech system or limited by aligned speech pairs, which suffered from pure emotion gain synthesis. Meanwhile, few studies have ... More
Sustainable Incentives for Mobile Crowdsensing: Auctions, Lotteries, and Trust and Reputation SystemsJan 01 2017Feb 24 2017Proper incentive mechanisms are critical for mobile crowdsensing systems to motivate people to actively and persistently participate. This article provides an exposition of design principles of six incentive mechanisms, drawing special attention to the ... More
CHAOS: an SDN-based Moving Target Defense SystemApr 05 2017The static nature of current cyber systems has made them easy to be attacked and compromised. By constantly changing a system, Moving Target Defense (MTD) has provided a promising way to reduce or move the attack surface that is available for exploitation ... More
Multi-Dimensional Auction Mechanisms for Crowdsourced Mobile Video StreamingMar 20 2017Jul 07 2018Crowdsourced mobile video streaming enables nearby mobile video users to aggregate network resources to improve their video streaming performances. However, users are often selfish and may not be willing to cooperate without proper incentives. Designing ... More
Evidence of Electron-Hole Imbalance in WTe2 from High-Resolution Angle-Resolved Photoemission SpectroscopyAug 28 2017WTe2 has attracted a great deal of attention because it exhibits extremely large and nonsaturating magnetoresistance. The underlying origin of such a giant magnetoresistance is still under debate. Utilizing laser-based angle-resolved photoemission spectroscopy ... More