Heterogeneous Treatment Effect Bounds under Sample Selection with an Application to the Effects of Social Media on Political Polarization

September 9, 2022

Economics
Statistics
Econometrics
Machine Learning
We propose a method for estimation and inference for bounds for heterogeneous causal effect parameters in general sample selection models where the treatment can affect whether an outcome is observed and no exclusion restrictions are availa...

Posterior contraction and uncertainty quantification for the multivariate spike-and-slab LASSO

September 9, 2022

|

Mathematics
Statistics
Statistics Theory
Statistics Theory
We study the asymptotic properties of Deshpande et al.\ (2019)'s multivariate spike-and-slab LASSO (mSSL) procedure for simultaneous variable and covariance selection in the sparse multivariate linear regression problem. In that problem, $q...

Decomposition of the algebra of analytic functionals on a connected complex Lie group and its completions into iterated analytic smash products

September 9, 2022

Mathematics
Functional Analysis
We show that a decomposition of a complex Lie group GG into a semidirect product generates that of the algebra of analytic functional, A(G){\mathscr A}(G), into an analytic smash product in the sense of Pirkovskii. Also we find sufficient co...

The Small-Noise Limit of the Most Likely Element is the Most Likely Element in the Small-Noise Limit

September 9, 2022

|

Mathematics
Probability
In this paper, we study the Onsager-Machlup function and its relationship to the Freidlin-Wentzell function for measures equivalent to arbitrary infinite dimensional Gaussian measures. The Onsager-Machlup function can serve as a density on ...

Phase field model for multi-material shape optimization of inextensible rods

September 9, 2022

| |

Mathematics
Computer Science
Physics
Optimization and Control
Numerical Analysis
Mathematical Physics
Mathematical Physics
Numerical Analysis
We derive a model for the optimization of the bending and torsional rigidities of non-homogeneous elastic rods. This is achieved by studying a sharp interface shape optimization problem with perimeter penalization, that treats both rigiditi...

Vehicle Trajectory Tracking Through Magnetic Sensors: A Case Study of Two-lane Road

September 9, 2022

| |

Computer Science
Robotics
Intelligent Transportation Systems (ITS) have a pressing need for efficient and reliable traffic surveillance solutions. This paper for the first time proposes a surveillance system that utilizes low-cost magnetic sensors for detecting and ...

Window Expressions for Stream Data Processing

September 9, 2022

|

Computer Science
Formal Languages and Automata Theory
Traditional ways of storing and querying data do not work well in scenarios where data is being generated continuously and quick decisions need to be taken. For example, in hospital intensive care units, signals from multiple devices need t...

Δ\Delta-PINNs: physics-informed neural networks on complex geometries

September 8, 2022

| | | | |

Computer Science
Machine Learning
Machine Learning
Physics-informed neural networks (PINNs) have demonstrated promise in solving forward and inverse problems involving partial differential equations. Despite recent progress on expanding the class of problems that can be tackled by PINNs, mo...

Participant Perceptions of a Robotic Coach Conducting Positive Psychology Exercises: A Qualitative Analysis

September 8, 2022

| | | | | | |

Computer Science
Human-Computer Interaction
Robotics
Human-Computer Interaction
Robotics
This paper presents a qualitative analysis of participants' perceptions of a robotic coach conducting Positive Psychology exercises, providing insights for the future design of robotic coaches. Participants (n = 20) took part in a single-se...

SPIDER: Fuzzing for Stateful Performance Issues in the ONOS Software-Defined Network Controller

September 8, 2022

| | | | |

Computer Science
Cryptography and Security
Cryptography and Security
Performance issues in software-defined network (SDN) controllers can have serious impacts on the performance and availability of networks. In this paper, we consider a special class of SDN vulnerabilities called stateful performance issues ...