model consistency
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Author(s):  
Rui-Rui Chen ◽  
Chien-Chueg Lin ◽  
Lin Wang ◽  
William S. Chao

Animation education in the new media era is moving toward the goal of cultivating high-end talents. The development of an architecture-oriented animation studies platform provides guarantee for the training of talents in terms of teaching quality. This research uses the Internet as the medium and mobile phones and computer clients as the main technology platforms, starting from the software architecture and constructing the system model of the animation studies platform according to the Structure-Behavior Coalescence (SBC) method. The core theme of Model-Based Systems Engineering (MBSE) is a modeling language with model consistency of systems structure and systems behavior. This paper developed Structure-Behavior Coalescence State Machine (SBC-SM) as the formal language for the MBSE animation studies platform design model singularity. The model consistency will be fully guaranteed in the MBSE animation studies platform design when the SBC state machine approach is adopted. It not only improves the efficiency of platform development but also reduces the difficulty and risk of platform development.


2021 ◽  
Author(s):  
Vivian W. Fang ◽  
Michael Iselin ◽  
Gaoqing Zhang

This paper studies financial statement consistency — the purported means to comparability — from an information perspective. We model consistency as firms’ required propensity to apply common accounting methods to individual transactions and show that consistency creates information spillover through correlated measurements (“spillover channel”) while potentially reducing the informativeness of one’s own report (“standalone channel”). The model generates two central predictions. First, optimal consistency decreases with a transaction’s fundamental correlation as high correlation diminishes information gains via the spillover channel. Second, optimal consistency decreases with a transaction’s fundamental volatility as high volatility exacerbates information losses via the standalone channel. Empirical evidence supports both predictions. Overall, this paper contributes a framework for studying comparability and draws useful policy implications. This paper was accepted by Brian Bushee, accounting.


2021 ◽  
Author(s):  
Woosub Shin ◽  
Joseph L. Hellerstein ◽  
Yuda Munarko ◽  
Maxwell L. Neal ◽  
David P. Nickerson ◽  
...  

AbstractThe interests in repurposing and reusing systems biology models have been growing in recent years. Semantic annotations play an important role for this, as they provide crucial information on the meanings and functions of models. However, there are a limited number of tools that evaluate the existence or quality of such annotations. In this paper, we introduce SBMate, a python package that would serve as a framework for evaluating the quality of annotations in systems biology models. Three default metrics are provided: coverage, consistency, and specificity. Coverage checks whether annotations exist in a model. Consistency tests if the annotations are appropriate for the given model element. Finally, specificity represents how detailed the annotations are. We analyzed 1,000 curated models from the BioModels repository using the three metrics and discussed the results. Additional metrics can be easily added to extend the current version of SBMate.


2021 ◽  
Author(s):  
Ross McKitrick

AbstractAllen and Tett (1999, herein AT99) introduced a Generalized Least Squares (GLS) regression methodology for decomposing patterns of climate change for attribution purposes and proposed the “Residual Consistency Test” (RCT) to check the GLS specification. Their methodology has been widely used and highly influential ever since, in part because subsequent authors have relied upon their claim that their GLS model satisfies the conditions of the Gauss-Markov (GM) Theorem, thereby yielding unbiased and efficient estimators. But AT99 stated the GM Theorem incorrectly, omitting a critical condition altogether, their GLS method cannot satisfy the GM conditions, and their variance estimator is inconsistent by construction. Additionally, they did not formally state the null hypothesis of the RCT nor identify which of the GM conditions it tests, nor did they prove its distribution and critical values, rendering it uninformative as a specification test. The continuing influence of AT99 two decades later means these issues should be corrected. I identify 6 conditions needing to be shown for the AT99 method to be valid.


2021 ◽  
Vol 144 ◽  
pp. 111009
Author(s):  
S.M. Cohen ◽  
G.C. Iyer ◽  
M. Brown ◽  
J. Macknick ◽  
M. Wise ◽  
...  

2021 ◽  
Vol 13 (6) ◽  
pp. 1136
Author(s):  
Yongjun Zhang ◽  
Wangshan Yang ◽  
Xinyi Liu ◽  
Yi Wan ◽  
Xianzhang Zhu ◽  
...  

Efficient building instance segmentation is necessary for many applications such as parallel reconstruction, management and analysis. However, most of the existing instance segmentation methods still suffer from low completeness, low correctness and low quality for building instance segmentation, which are especially obvious for complex building scenes. This paper proposes a novel unsupervised building instance segmentation (UBIS) method of airborne Light Detection and Ranging (LiDAR) point clouds for parallel reconstruction analysis, which combines a clustering algorithm and a novel model consistency evaluation method. The proposed method first divides building point clouds into building instances by the improved kd tree 2D shared nearest neighbor clustering algorithm (Ikd-2DSNN). Then, the geometric feature of the building instance is obtained using the model consistency evaluation method, which is used to determine whether the building instance is a single building instance or a multi-building instance. Finally, for multiple building instances, the improved kd tree 3D shared nearest neighbor clustering algorithm (Ikd-3DSNN) is used to divide multi-building instances again to improve the accuracy of building instance segmentation. Our experimental results demonstrate that the proposed UBIS method obtained good performances for various buildings in different scenes such as high-rise building, podium buildings and a residential area with detached houses. A comparative analysis confirms that the proposed UBIS method performed better than state-of-the-art methods.


2021 ◽  
Vol 1802 (4) ◽  
pp. 042031
Author(s):  
Bin Liu ◽  
Shaoshuai Wang ◽  
Lu Gao ◽  
Weiyi Wu ◽  
Peng Yan
Keyword(s):  

2021 ◽  
Vol 17 (2) ◽  
pp. e1008635
Author(s):  
Gerrit Ansmann ◽  
Tobias Bollenbach

Many ecological studies employ general models that can feature an arbitrary number of populations. A critical requirement imposed on such models is clone consistency: If the individuals from two populations are indistinguishable, joining these populations into one shall not affect the outcome of the model. Otherwise a model produces different outcomes for the same scenario. Using functional analysis, we comprehensively characterize all clone-consistent models: We prove that they are necessarily composed from basic building blocks, namely linear combinations of parameters and abundances. These strong constraints enable a straightforward validation of model consistency. Although clone consistency can always be achieved with sufficient assumptions, we argue that it is important to explicitly name and consider the assumptions made: They may not be justified or limit the applicability of models and the generality of the results obtained with them. Moreover, our insights facilitate building new clone-consistent models, which we illustrate for a data-driven model of microbial communities. Finally, our insights point to new relevant forms of general models for theoretical ecology. Our framework thus provides a systematic way of comprehending ecological models, which can guide a wide range of studies.


2021 ◽  
Vol 9 ◽  
pp. 1012-1031
Author(s):  
Yanai Elazar ◽  
Nora Kassner ◽  
Shauli Ravfogel ◽  
Abhilasha Ravichander ◽  
Eduard Hovy ◽  
...  

Abstract Consistency of a model—that is, the invariance of its behavior under meaning-preserving alternations in its input—is a highly desirable property in natural language processing. In this paper we study the question: Are Pretrained Language Models (PLMs) consistent with respect to factual knowledge? To this end, we create ParaRel🤘, a high-quality resource of cloze-style query English paraphrases. It contains a total of 328 paraphrases for 38 relations. Using ParaRel🤘, we show that the consistency of all PLMs we experiment with is poor— though with high variance between relations. Our analysis of the representational spaces of PLMs suggests that they have a poor structure and are currently not suitable for representing knowledge robustly. Finally, we propose a method for improving model consistency and experimentally demonstrate its effectiveness.1


2020 ◽  
Vol 47 (11) ◽  
pp. 5555-5567
Author(s):  
Brad Stiehl ◽  
Michael Lauria ◽  
Dylan O'Connell ◽  
Katelyn Hasse ◽  
Igor Z. Barjaktarevic ◽  
...  

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