scholarly journals Farthest-Point Queries with Geometric and Combinatorial Constraints

2005 ◽  
pp. 62-75 ◽  
Author(s):  
Ovidiu Daescu ◽  
Ningfang Mi ◽  
Chan-Su Shin ◽  
Alexander Wolff
Keyword(s):  
Farthest Point

scholarly journals PCT: Point cloud transformer

2021 ◽  
Vol 7 (2) ◽  
pp. 187-199
Author(s):  
Meng-Hao Guo ◽  
Jun-Xiong Cai ◽  
Zheng-Ning Liu ◽  
Tai-Jiang Mu ◽  
Ralph R. Martin ◽  
...  
Keyword(s):  
Language Processing ◽  
Point Cloud ◽  
Nearest Neighbor ◽  
Semantic Segmentation ◽  
Nearest Neighbor Search ◽  
Local Context ◽  
Irregular Domain ◽  
Cloud Processing ◽  
Neighbor Search ◽  
Farthest Point

AbstractThe irregular domain and lack of ordering make it challenging to design deep neural networks for point cloud processing. This paper presents a novel framework named Point Cloud Transformer (PCT) for point cloud learning. PCT is based on Transformer, which achieves huge success in natural language processing and displays great potential in image processing. It is inherently permutation invariant for processing a sequence of points, making it well-suited for point cloud learning. To better capture local context within the point cloud, we enhance input embedding with the support of farthest point sampling and nearest neighbor search. Extensive experiments demonstrate that the PCT achieves the state-of-the-art performance on shape classification, part segmentation, semantic segmentation, and normal estimation tasks.

scholarly journals Implementation of an Expanded Decision-Making Technique to Comment on Sweden Readiness for Digital Tourism

Systems ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 50
Author(s):  
Shahryar Sorooshian
Keyword(s):  
Information And Communication Technology ◽  
Communication Technology ◽  
Extended Version ◽  
Industry Clusters ◽  
Transition Readiness ◽  
Information And Communication ◽  
Farthest Point ◽  
Topsis Technique ◽  
Almost All ◽  
New Framework

Tourism provides many advantages for Sweden and the whole world, as well as its travelers. Since almost all types of tourism are currently in crisis as a result of the current COVID-19 pandemic, information and communication technology is expected to play a role, not only during the crisis but also in the post-COVID-19 era. Thus, with no expectations from types of tourism, Sweden needs to broaden its digital tours. As a result, this letter aims to classify the transition readiness of industry clusters for this digitalization move. An extended version of the TOPSIS technique was formulated and validated, plus a new framework for measuring digitalization readiness for this purpose. Lastly, analysis of the collected data proves that business tourism could lead the change, though adventure and rural tourism are at the farthest point from being considered ready to change.

scholarly journals MLatom 2: An Integrative Platform for Atomistic Machine Learning

2021 ◽  
Vol 379 (4) ◽  
Author(s):  
Pavlo O. Dral ◽  
Fuchun Ge ◽  
Bao-Xin Xue ◽  
Yi-Fan Hou ◽  
Max Pinheiro ◽  
...  
Keyword(s):  
Machine Learning ◽  
Software Package ◽  
State Of The Art ◽  
Kernel Method ◽  
Automatic Learning ◽  
Hyperparameter Optimization ◽  
Input And Output ◽  
Spectrum Simulation ◽  
Farthest Point ◽  
Theoretical Foundations

AbstractAtomistic machine learning (AML) simulations are used in chemistry at an ever-increasing pace. A large number of AML models has been developed, but their implementations are scattered among different packages, each with its own conventions for input and output. Thus, here we give an overview of our MLatom 2 software package, which provides an integrative platform for a wide variety of AML simulations by implementing from scratch and interfacing existing software for a range of state-of-the-art models. These include kernel method-based model types such as KREG (native implementation), sGDML, and GAP-SOAP as well as neural-network-based model types such as ANI, DeepPot-SE, and PhysNet. The theoretical foundations behind these methods are overviewed too. The modular structure of MLatom allows for easy extension to more AML model types. MLatom 2 also has many other capabilities useful for AML simulations, such as the support of custom descriptors, farthest-point and structure-based sampling, hyperparameter optimization, model evaluation, and automatic learning curve generation. It can also be used for such multi-step tasks as Δ-learning, self-correction approaches, and absorption spectrum simulation within the machine-learning nuclear-ensemble approach. Several of these MLatom 2 capabilities are showcased in application examples.

scholarly journals A theory of tracheal respiration in insects

1930 ◽  
Vol 106 (743) ◽  
pp. 229-250 ◽  
Keyword(s):  
The Other ◽  
Academic Interest ◽  
The Subject ◽  
Tissue Cells ◽  
Physiological Studies ◽  
Farthest Point ◽  
The One ◽  
Almost All ◽  
Satisfactory Theory

A satisfactory theory of tracheal respiration would not only be of considerable academic interest but, since respiratory poisons are employed for the destruction of many harmful insects, it might prove of great practical value. Physiological studies on the tracheæ of insects have aimed chiefly at establishing, on the one hand, the mode of ending of these air-containing tubes, and, on the other, the forces which maintain the supply of oxygen to their terminations. As regards the former of these problems, there is no general agreement; for most of those who have studied the subject have worked with different organs from different insects, and almost all have assumed that the farthest point to which they have succeeded in tracing the tubes is in fact their termination. In certain cases, however, there is no doubt that the tracheal capillaries or tracheoles penetrate within the cytoplasm of the tissue cells (see Wigglesworth, 1929).

scholarly journals Analysis of farthest point sampling for approximating geodesics in a graph

2016 ◽  
Vol 57 ◽  
pp. 1-7 ◽  
Author(s):  
Pegah Kamousi ◽  
Sylvain Lazard ◽  
Anil Maheshwari ◽  
Stefanie Wuhrer
Keyword(s):  
Point Sampling ◽  
Farthest Point

The Gortyn ‘Labyrinth’ and its Visitors in the Fifteenth Century

1949 ◽  
Vol 44 ◽  
pp. 324-325
Author(s):  
A. M. Woodward
Keyword(s):  
Fifteenth Century ◽  
Rock Face ◽  
Literary Source ◽  
Farthest Point

The ‘Labyrinth’ near Gortyn in southern Crete has attracted the interest and the curiosity of many generations of travellers visiting the island. When Tournefort explored it systematically in 1700 he observed and recorded the dates inscribed by visitors, who had sometimes added their names, on the rock-face, either at the farthest point which can be reached, or on the sides of the passage leading to it. As the earliest date which he noted was 1444, it may be of interest to draw attention to an even earlier literary source for such visits.

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