scholarly journals Evaluating Rank-Coherence of Crowd Rating in Customer Satisfaction

2020 ◽  
Author(s):  
Venera Tomaselli ◽  
Giulio Giacomo Cantone
Keyword(s):  
Customer Satisfaction ◽  
Ad Hoc ◽  
Data Gathering ◽  
Social Contexts ◽  
Public Utility ◽  
Public Disclosure ◽  
Measurement And Analysis ◽  
Method Of Measurement ◽  
Weighted Measure ◽  
Rating Information

AbstractCrowd rating is a continuous and public process of data gathering that allows the display of general quantitative opinions on a topic from online anonymous networks as they are crowds. Online platforms leveraged these technologies to improve predictive tasks in marketing. However, we argue for a different employment of crowd rating as a tool of public utility to support social contexts suffering to adverse selection, like tourism. This aim needs to deal with issues in both method of measurement and analysis of data, and with common biases associated to public disclosure of rating information. We propose an evaluative method to investigate fairness of common measures of rating procedures with the peculiar perspective of assessing linearity of the ranked outcomes. This is tested on a longitudinal observational case of 7 years of customer satisfaction ratings, for a total amount of 26.888 reviews. According to the results obtained from the sampled dataset, analysed with the proposed evaluative method, there is a trade-off between loss of (potentially) biased information on ratings and fairness of the resulting rankings. However, computing an ad hoc unbiased ranking case, the ranking outcome through the time-weighted measure is not significantly different from the ad hoc unbiased case.

Measurement and Analysis of Triboelectric Surface Charge

2021 ◽  
Vol 30 (1/2) ◽  
pp. 7-11
Author(s):  
Jinhong PARK ◽  
Jinhyeok CHOI ◽  
Sang Hyeok PARK ◽  
Minbaek LEE
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Surface Properties ◽  
Elastic Moduli ◽  
Surface Charges ◽  
Contact Electrification ◽  
Measurement And Analysis ◽  
Different Types ◽  
Triboelectric Charging ◽  
Method Of Measurement

Contact electrification occurs when two isolated objects come into contact. Such a phenomenon led humans to first realization of the existence of electricity. Until now, the main causes of the triboelectric charging phenomenon have generally been thought to be the transfer of electrons, ions, and materials. This article, however, is limited to electron transfer on the surface, which is regarded as a general case not limited to specific situations. The contact between two objects occurs between the two surfaces; therefore, the surface properties of the material under examination are the most important properties in triboelectric charge transfer. The surface properties may include the types of materials in contact, their energy states, the roughnesses of their surfaces, and their elastic moduli. In this regard, we introduce here the current understanding of the energy band structures involved in the different types of materials, the method of measurement, an analysis of surface charges, and related applications.

scholarly journals Avoiding Conflict: When Speaker Coordination Does Not Require Conceptual Agreement

2021 ◽  
Vol 3 ◽  
Author(s):  
Alexandre Kabbach ◽  
Aurélie Herbelot
Keyword(s):  
Ad Hoc ◽  
Semantic Space ◽  
Social Contexts ◽  
Linguistic Community ◽  
Dense Matrix ◽  
Lexical Representations ◽  
Successful Communication ◽  
Distributional Information ◽  
Distributional Semantic Models ◽  
Value Decomposition

In this paper we discuss the socialization hypothesis—the idea that speakers of the same (linguistic) community should share similar concepts given that they are exposed to similar environments and operate in highly-coordinated social contexts—and challenge the fact that it is assumed to constitute a prerequisite to successful communication. We do so using distributional semantic models of meaning (DSMs) which create lexical representations via latent aggregation of co-occurrence information between words and contexts. We argue that DSMs constitute particularly adequate tools for exploring the socialization hypothesis given that 1) they provide full control over the notion of background environment, formally characterized as the training corpus from which distributional information is aggregated; and 2) their geometric structure allows for exploiting alignment-based similarity metrics to measure inter-subject alignment over an entire semantic space, rather than a set of limited entries. We propose to model coordination between two different DSMs trained on two distinct corpora as dimensionality selection over a dense matrix obtained via Singular Value Decomposition This approximates an ad-hoc coordination scenario between two speakers as the attempt to align their similarity ratings on a set of word pairs. Our results underline the specific way in which linguistic information is spread across singular vectors, and highlight the need to distinguish agreement from mere compatibility in alignment-based notions of conceptual similarity. Indeed, we show that compatibility emerges from idiosyncrasy so that the unique and distinctive aspects of speakers’ background experiences can actually facilitate—rather than impede—coordination and communication between them. We conclude that the socialization hypothesis may constitute an unnecessary prerequisite to successful communication and that, all things considered, communication is probably best formalized as the cooperative act of avoiding conflict, rather than maximizing agreement.

scholarly journals A Survey on the Noncooperative Environment in Smart Nodes-Based Ad Hoc Networks: Motivations and Solutions

2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Muhammad Altaf Khan ◽  
Moustafa M. Nasralla ◽  
Muhammad Muneer Umar ◽  
Zeeshan Iqbal ◽  
Ghani Ur Rehman ◽  
...  
Keyword(s):  
Ad Hoc Networks ◽  
Wireless Ad Hoc Networks ◽  
Information Exchange ◽  
Ad Hoc ◽  
Performance Metrics ◽  
Data Gathering ◽  
Selfish Nodes ◽  
Selfish Behavior ◽  
Work Distribution ◽  
Hoc Networks

In ad hoc networks, the communication is usually made through multiple hops by establishing an environment of cooperation and coordination among self-operated nodes. Such nodes typically operate with a set of finite and scarce energy, processing, bandwidth, and storage resources. Due to the cooperative environment in such networks, nodes may consume additional resources by giving relaying services to other nodes. This aspect in such networks coined the situation of noncooperative behavior by some or all the nodes. Moreover, nodes sometimes do not cooperate with others due to their social likeness or their mobility. Noncooperative or selfish nodes can last for a longer time by preserving their resources for their own operations. However, such nodes can degrade the network's overall performance in terms of lower data gathering and information exchange rates, unbalanced work distribution, and higher end-to-end delays. This work surveys the main roots for motivating nodes to adapt selfish behavior and the solutions for handling such nodes. Different schemes are introduced to handle selfish nodes in wireless ad hoc networks. Various types of routing techniques have been introduced to target different types of ad hoc networks having support for keeping misbehaving or selfish nodes. The major solutions for such scenarios can be trust-, punishment-, and stimulation-based mechanisms. Some key protocols are simulated and analyzed for getting their performance metrics to compare their effectiveness.

scholarly journals Public utility vehicle service quality and customer satisfaction in the Philippines during the COVID-19 pandemic

2022 ◽  
pp. 101336
Author(s):  
Thanatorn Chuenyindee ◽  
S. Ong Ardvin Kester ◽  
Jon Pauline Ramos ◽  
Yogi Tri Prasetyo ◽  
Reny Nadlifatin ◽  
...  
Keyword(s):  
Customer Satisfaction ◽  
Service Quality ◽  
The Philippines ◽  
Public Utility ◽  
Utility Vehicle

Measurement and Analysis of Torque Ripple in Inverter Driven Electric Machines

2021 ◽  
Vol 263 (6) ◽  
pp. 227-235
Author(s):  
Mitchell Marks
Keyword(s):  
Best Practices ◽  
Torque Ripple ◽  
Electric Machines ◽  
Slow Speed ◽  
Noise And Vibration ◽  
Torque Response ◽  
Measurement And Analysis ◽  
Method Of Measurement ◽  
Different Sources ◽  
Speed Method

Torque ripple in electric machines can create both noise and vibration. While torque ripple is often well understood theoretically, it is much more difficult to accurately predict and measure. Often torque ripple is measured as a function of magnets and slot interaction at extremely low speed, but this can only be extrapolated to understand its implications for noise and vibration and is not useful for understanding torque response during dynamic scenarios like a change in load. The slow speed method of measurement also neglects possible switching effects on the torque profile. This paper will explore challenges in measuring the different sources of torque ripple and give an alternative method to measure torque ripple at higher speeds and also dynamically. This will include best practices and examples.

Employees’ customer orientation and customer satisfaction in the public utility sector

2019 ◽  
Vol 10 (4) ◽  
pp. 408-423 ◽  
Author(s):  
Wenyuan Li ◽  
Wisdom Wise Kwabla Pomegbe ◽  
Courage Simon Kofi Dogbe ◽  
Jewel Dela Novixoxo
Keyword(s):  
Economic Growth ◽  
Customer Satisfaction ◽  
Service Quality ◽  
Customer Orientation ◽  
Public Institutions ◽  
Public Utility ◽  
Public Institution ◽  
Content Type ◽  
Perceived Service Quality ◽  
The Public

Purpose The purpose of this paper is to ascertain how perceived service quality mediates employees’ customer orientation and customer satisfaction in the public utility sector. Design/methodology/approach The study focused on the commercial customers (small and medium-scale enterprises– (SMEs)) of Electricity Company of Ghana Ltd. There were 350 SMEs sampled for the study, and each had no more than 99 employees. Respondents were either owner-managers or employee-managers. Structural equation model (SEM) was used in estimating the effects among the variables studied. Findings Most public institutions have a built-in customer base, and therefore places less emphasis on employees’ customer orientation. This notwithstanding, findings revealed that employees’ customer orientation behaviors significantly impacted customers’ perceived service quality and satisfaction toward public institutions. Similarly, customers’ perceived service quality influenced their satisfaction toward public institutions. SMEs serve as an engine for economic growth in an economy, and therefore public institutions must consider their peculiar needs in the delivery of service to them. Originality/value This study pointed out that, employees’ customer orientation behaviors of public institutions have an influence on customers’ perceived service quality and satisfaction. Previous studies on these concepts have largely focused on the private sector, where there are lots of competition. This study also specifically studied commercial customers (SMEs) of public institution, which is quite novel, especially in relation to the concepts studied. And the contribution of SMEs to economic growth makes their study even much more important.

scholarly journals An Efficient Data Transmission in VANET Using Clustering Method

2017 ◽  
Vol 63 (3) ◽  
pp. 309-313 ◽  
Author(s):  
C. Suganthi Evangeline ◽  
S. Appu
Keyword(s):  
Ad Hoc Networks ◽  
Vehicular Ad Hoc Networks ◽  
Ad Hoc ◽  
Cluster Head ◽  
Data Gathering ◽  
Link Quality ◽  
Clustering Methods ◽  
The Road ◽  
Hoc Networks

Abstract A special type of Mobile Ad-hoc Networks (MANETs) which has frequent changes of topology and higher mobility is known as Vehicular Ad-hoc Networks (VANETs). In order to divide the network into groups of mobile vehicles and improve routing, data gathering, clustering is applied in VANETs. A stable clustering scheme based on adaptive multiple metric combining both the features of static and dynamic clustering methods is proposed in this work. Based on a new multiple metric method, a cluster head is selected among the cluster members which is taken from the mobility metrics such as position and time to leave the road segment, relative speed and Quality of Service metrics which includes neighborhood degree, link quality of the RSU and bandwidth. A higher QoS and cluster stability are achieved through the adaptive multiple metric. The results are simulated using NS2 and shows that this technique provides more stable cluster structured with the other methods.

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