Automatically Neutralizing Subjective Bias in Text. (arXiv:1911.09709v1 [cs.AI])

Texts like news, encyclopedias, and some social media strive for objectivity. Yet bias in the form of inappropriate subjectivity – introducing attitudes via framing, presupposing truth, and casting doubt – remains ubiquitous. This kind of bias erodes our collective trust and fuels social conflict. To address this issue, we introduce a novel testbed for natural…

RefinedMPL: Refined Monocular PseudoLiDAR for 3D Object Detection in Autonomous Driving. (arXiv:1911.09712v1 [cs.CV])

In this paper, we strive for solving the ambiguities arisen by the astoundingly high density of raw PseudoLiDAR for monocular 3D object detection for autonomous driving. Without much computational overhead, we propose a supervised and an unsupervised sparsification scheme of PseudoLiDAR prior to 3D detection. Both the strategies assist the standard 3D detector gain better…

Using Socially Expressive Mixed Reality Arms for Enhancing Low-Expressivity Robots. (arXiv:1911.09713v1 [cs.RO])

Expressivity–the use of multiple modalities to convey internal state and intent of a robot–is critical for interaction. Yet, due to cost, safety, and other constraints, many robots lack high degrees of physical expressivity. This paper explores using mixed reality to enhance a robot with limited expressivity by adding virtual arms that extend the robot’s expressiveness.…

Efficient Drone Mobility Support Using Reinforcement Learning. (arXiv:1911.09715v1 [cs.IT])

Flying drones can be used in a wide range of applications and services from surveillance to package delivery. To ensure robust control and safety of drone operations, cellular networks need to provide reliable wireless connectivity to drone user equipments (UEs). To date, existing mobile networks have been primarily designed and optimized for serving ground UEs,…

Two-dimensional, partially-ionized, magnetohydrodynamic turbulence. (arXiv:1911.09679v1 [physics.flu-dyn])

Ionization occurs in the upper atmospheres of hot Jupiters and in the interiors of Gas Giant Planets, leading to magnetohydrodynamic (MHD) effects which couple the momentum and the magnetic field, thereby significantly altering the dynamics. In regions of moderate temperatures the gas is only partially ionized, which also leads to interactions with neutral molecules. To…

Parallelising MCMC via Random Forests. (arXiv:1911.09698v1 [stat.CO])

For Bayesian computation in big data contexts, the divide-and-conquer MCMC concept splits the whole data set into batches, runs MCMC algorithms separately over each batch to produce samples of parameters, and combines them to produce an approximation of the target distribution. In this article, we embed random forests into this framework and use each subposterior/partial-posterior…

A Unified Framework for Lifelong Learning in Deep Neural Networks. (arXiv:1911.09704v1 [cs.LG])

Humans can learn a variety of concepts and skills incrementally over the course of their lives while exhibiting an array of desirable properties, such as non-forgetting, concept rehearsal, forward transfer and backward transfer of knowledge, and so on. Previous approaches to lifelong learning (LLL) have demonstrated subsets of these properties, often with multiple mechanisms. In…

Local Spectral Clustering of Density Upper Level Sets. (arXiv:1911.09714v1 [math.ST])

We analyze the Personalized PageRank (PPR) algorithm, a local spectral method for clustering, which extracts clusters using locally-biased random walks around a given seed node. In contrast to previous work, we adopt a classical statistical learning setup, where we obtain samples from an unknown distribution, and aim to identify connected regions of high-density (density clusters).…

Communication-Efficient and Byzantine-Robust Distributed Learning. (arXiv:1911.09721v1 [cs.LG])

We develop a communication-efficient distributed learning algorithm that is robust against Byzantine worker machines. We propose and analyze a distributed gradient-descent algorithm that performs a simple thresholding based on gradient norms to mitigate Byzantine failures. We show the (statistical) error-rate of our algorithm matches that of [YCKB18], which uses more complicated schemes (like coordinate-wise median…

EvAn: Neuromorphic Event-based Anomaly Detection. (arXiv:1911.09722v1 [stat.ML])

Event-based cameras are bio-inspired novel sensors that asynchronously record changes in illumination in the form of events, thus resulting in significant advantages over conventional cameras in terms of low power utilization, high dynamic range, and no motion blur. Moreover, such cameras, by design, encode only the relative motion between the scene and the sensor (and…