A tree model for structured peer-to-peer protocols

Author(s):  
Hung-Chang Hsiao ◽  
Chung-Ta King
Keyword(s):  
2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Athor Subroto ◽  
Marcel Christianis

AbstractThis study aims to predict customers’ behavior in classifying their reviews as high rated or low rated using associated attributes and topics found in the review. Knowing customer reviewing action better can lead to a successful strategy implementation of the relevant parties related to this study such as policy to manage customer reviews by keeping their satisfaction high. We applied a big data approach on a dataset of 55,377 reviews from Airbnb listings in the top 10 most visited cities in Indonesia (based on foreign arrivals data). We used The Classification and Regression Tree Model, Random Forest Model, Least Absolute Shrinkage and Selection Operation and Logistic Regression Model, Artificial Neural Network as well as Multi-Layer Perceptron to make prediction’s classification. Those models are used to identify a set of attributes and topics that will increase the chance of the review to render a high rate and a different set of attributes and topics that will lead the review to be low rated. This study found; first, attributes and topics that influence customers' odds to classify their review as high rated or low rated adhere to the understanding of Peer to Peer accommodation attributes. Second, successfully proved that customer reviews' attributes and topics could be used to predict the classification of ratings in Peer to Peer accommodation. Where for Topics, we can predict the rating using Random Forest yields 60.09% accuracy, slightly better than Artificial Neural Network (58.33%) and Multi-Layer Perceptron (58.8%). However, it seems better to use Attributes to predict the rating, where the accuracy is yielded better by applying Artificial Neural Network with 84.79% accuracy compared to Multi-Layer Perceptron with only 72.35% of accuracy.


PADUA ◽  
2016 ◽  
Vol 11 (1) ◽  
pp. 65-71 ◽  
Author(s):  
Jörg Haslbeck

Zusammenfassung. In der Gesundheitsversorgung von Menschen, die mit chronischen Krankheiten leben, wird soziale Unterstützung durch «peers» immer bedeutsamer, d. h. durch Personen, die aufgrund ähnlicher Krankheits- und Alltagserfahrungen in einer vergleichbaren Lebenssituation sind. Welche Potenziale, Chancen sowie Grenzen hat «peer-to-peer healthcare» im Kontext von Selbstmanagementförderung? Der Beitrag diskutiert dies anhand von Erfahrungen mit dem Stanford Kursprogramm «Gesund und aktiv leben».


2020 ◽  
pp. 57-65
Author(s):  
Eusébio Conceiçã ◽  
João Gomes ◽  
Maria Manuela Lúcio ◽  
Jorge Raposo ◽  
Domingos Xavier Viegas ◽  
...  

This paper refers to a numerical study of the hypo-thermal behaviour of a pine tree in a forest fire environment. The pine tree thermal response numerical model is based on energy balance integral equations for the tree elements and mass balance integral equation for the water in the tree. The simulation performed considers the heat conduction through the tree elements, heat exchanges by convection between the external tree surfaces and the environment, heat exchanges by radiation between the flame and the external tree surfaces and water heat loss by evaporation from the tree to the environment. The virtual three-dimensional tree model has a height of 7.5 m and is constituted by 8863 cylindrical elements representative of its trunks, branches and leaves. The fire front has 10 m long and a 2 m high. The study was conducted taking into account that the pine tree is located 5, 10 or 15 m from the fire front. For these three analyzed distances, the numerical results obtained regarding to the distribution of the view factors, mean radiant temperature and surface temperatures of the pine tree are presented. As main conclusion, it can be stated that the values of the view factor, MRT and surface temperatures of the pine tree decrease with increasing distance from the pine tree in front of fire.


2011 ◽  
Vol 7 (5) ◽  
pp. 16-21
Author(s):  
G.V. Poryev ◽  
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document