Results 21 to 30 of about 3,292,414 (307)

Efficient knowledge graph accuracy evaluation [PDF]

open access: yesProceedings of the VLDB Endowment, 2019
Estimation of the accuracy of a large-scale knowledge graph (KG) often requires humans to annotate samples from the graph. How to obtain statistically meaningful estimates for accuracy evaluation while keeping human annotation costs low is a problem critical to the development cycle of a KG and its practical applications. Surprisingly, this challenging
Gao, Junyang   +5 more
openaire   +2 more sources

Efficiency Evaluation Of Implementation Of Optimization Methods Of Operation Modes Of The "Plast - Gas Pipeline" System By The Methods Of Mathematical Modeling [PDF]

open access: yes, 2018
To date, Ukraine's mature gas fields, which are being developed in the gas regime, are at the final stage of development, which is characterized by a significant depletion of reservoir energy.
Bratakh, M. (Mikhailo)   +4 more
core   +2 more sources

Assessing the Efficiency and CO2 Reduction Performance of China’s Regional Wind Power Industry Using an Epsilon-Based Measure Model

open access: yesFrontiers in Energy Research, 2021
China has become the largest wind power installation market in the world, and on such a large scale its wind power industry contributes to the sustainability of electricity generation and reduction of carbon emissions, yet has problems such as wind ...
Ze Tian   +3 more
doaj   +1 more source

Energy-efficiency evaluation of Intel KNL for HPC workloads [PDF]

open access: yes, 2018
Energy consumption is increasingly becoming a limiting factor to the design of faster large-scale parallel systems, and development of energy-efficient and energy-aware applications is today a relevant issue for HPC code-developer communities.
Calore, E.   +3 more
core   +2 more sources

New Method for Efficiency Evaluation of Digital Technologies in Agricultural Sector [PDF]

open access: yesТехника и технология пищевых производств, 2019
The paper features digital technologies in satellite farming and introduces a quantitative methodology to evaluate various types of their effectiveness.
Rada A., Fedulova E., Kosinsky P.
doaj   +1 more source

Investment merger efficiency evaluation of energy enterprises: From a perspective of energy internet

open access: yesFrontiers in Environmental Science, 2022
Evaluating the efficiency of energy enterprises’ investment merger in the energy Internet sector can be a visual measure of the effectiveness of their investment merger in this sector.
Yirui Deng   +5 more
doaj   +1 more source

Certified Efficient Global Roundness Evaluation

open access: yesJournal of Optimization Theory and Applications, 2020
AbstractWe propose and analyze a global search algorithm for the computation of the minimum zone sphericity (circularity) error of a given set. The formulation is valid in any dimension and covers both finite sets of data points as well as infinite sets like polygonal chains or triangulations of surfaces. We derive theoretical estimates for the cost to
Schöpfer, Frank, Chernov, Alexey
openaire   +2 more sources

Exploratory Research to Improve Energy-Efficiency of a Ground-Coupled Heat Pump Utilizing an Automatic Control Device of Circulation Pump Speed

open access: yesEnergies, 2020
Ground-coupled heat pumps (GCHPs) are an efficient thermal energy production system that can satisfy the gap between heating and air-conditioning. Be that as it may, exploratory research on GCHPs is still lacking.
Ioan Sarbu, Calin Sebarchievici
doaj   +1 more source

A comparative study of satellite altimetry-based and DEM-based methods for estimating lake water volume changes

open access: yesWater Science and Technology
This study compared two different methods, the satellite altimetry-based and DEM (digital elevation model)-based, for estimating lake water volume changes.
Haotian Li   +4 more
doaj   +1 more source

Towards a conceptualization of a social efficiency notion in management sciences

open access: yesEkonomia i Prawo, 2020
Motivation: In the past, economic efficiency was a key criterion for assessing different types of activities undertaken by various organizations. It has been noticed that acquiring economic efficiency cannot be the only goal, and efficiency notion has ...
Tadeusz A. Grzeszczyk   +1 more
doaj   +1 more source

Home - About - Disclaimer - Privacy