93 research outputs found
THE SURVEY OF TENANTS IN CHAPEL HILL
Pandas is a software library written for the Python programming language for data manipulation and analysis. In particular, it offers data structures and operations for manipulating numerical tables and time series. I hope to solve some of the existing problems by analyzing the data with pandas, a useful tool. In this document, I will show use the functions of pandas and show the code used to analyze the data, the output, and the renderingsMaster of Science in Information Scienc
PeF: Poisson's Equation Based Large-Scale Fixed-Outline Floorplanning
Floorplanning is the first stage of VLSI physical design. An effective
floorplanning engine definitely has positive impact on chip design speed,
quality and performance. In this paper, we present a novel mathematical model
to characterize non-overlapping of modules, and propose a flat fixed-outline
floorplanning algorithm based on the VLSI global placement approach using
Poisson's equation. The algorithm consists of global floorplanning and
legalization phases. In global floorplanning, we redefine the potential energy
of each module based on the novel mathematical model for characterizing
non-overlapping of modules and an analytical solution of Poisson's equation. In
this scheme, the widths of soft modules appear as variables in the energy
function and can be optimized. Moreover, we design a fast approximate
computation scheme for partial derivatives of the potential energy. In
legalization, based on the defined horizontal and vertical constraint graphs,
we eliminate overlaps between modules remained after global floorplanning, by
modifying relative positions of modules. Experiments on the MCNC, GSRC, HB+ and
ami49\_x benchmarks show that, our algorithm improves the average wirelength by
at least 2\% and 5\% on small and large scale benchmarks with certain
whitespace, respectively, compared to state-of-the-art floorplanners
Fairness Increases Adversarial Vulnerability
The remarkable performance of deep learning models and their applications in
consequential domains (e.g., facial recognition) introduces important
challenges at the intersection of equity and security. Fairness and robustness
are two desired notions often required in learning models. Fairness ensures
that models do not disproportionately harm (or benefit) some groups over
others, while robustness measures the models' resilience against small input
perturbations.
This paper shows the existence of a dichotomy between fairness and
robustness, and analyzes when achieving fairness decreases the model robustness
to adversarial samples. The reported analysis sheds light on the factors
causing such contrasting behavior, suggesting that distance to the decision
boundary across groups as a key explainer for this behavior. Extensive
experiments on non-linear models and different architectures validate the
theoretical findings in multiple vision domains. Finally, the paper proposes a
simple, yet effective, solution to construct models achieving good tradeoffs
between fairness and robustness
Quantum interference between non-identical single particles
Quantum interference between identical single particles reveals the intrinsic
quantum statistic nature of particles, which could not be interpreted through
classical physics. Here, we demonstrate quantum interference between
non-identical bosons using a generalized beam splitter based on a quantum
memory. The Hong-Ou-Mandel type interference between single photons and single
magnons with high visibility is demonstrated, and the crossover from the
bosonic to fermionic quantum statistics is observed by tuning the beam splitter
to be non-Hermitian. Moreover, multi-particle interference that simulates the
behavior of three fermions by three input photons is realized. Our work extends
the understanding of the quantum interference effects and demonstrates a
versatile experimental platform for studying and engineering quantum statistics
of particles.Comment: 6 pages, 4 figure
NcRNA: key and potential in hearing loss
Hearing loss has an extremely high prevalence worldwide and brings incredible economic and social burdens. Mechanisms such as epigenetics are profoundly involved in the initiation and progression of hearing loss and potentially yield definite strategies for hearing loss treatment. Non-coding genes occupy 97% of the human genome, and their transcripts, non-coding RNAs (ncRNAs), are widely participated in regulating various physiological and pathological situations. NcRNAs, mainly including micro-RNAs (miRNAs), long-stranded non-coding RNAs (lncRNAs), and circular RNAs (circRNAs), are involved in the regulation of cell metabolism and cell death by modulating gene expression and protein-protein interactions, thus impacting the occurrence and prognosis of hearing loss. This review provides a detailed overview of ncRNAs, especially miRNAs and lncRNAs, in the pathogenesis of hearing loss. We also discuss the shortcomings and issues that need to be addressed in the study of hearing loss ncRNAs in the hope of providing viable therapeutic strategies for the precise treatment of hearing loss
- …