scholarly journals Cross-Device Identity Resolution using Machine Learning: A Scalable Device Graph Approach

2021 ◽  
Vol 34 (1) ◽  
Author(s):  
Manasa Priya Koduri ◽  
Pei Xuan Lim ◽  
Zhen Li ◽  
Sandeep Kumar ◽  
Muhammad Aamir Saleem ◽  
...  
Keyword(s):  
Public Service ◽  
Clustering Algorithms ◽  
Past Research ◽  
Time Frame ◽  
Holistic View ◽  
Identity Resolution ◽  
Real World Applications ◽  
Commercial Applications ◽  
Community Clustering ◽  
High Level

This paper outlines how Mediacorp, Singapore's public service broadcaster, addresses its cross-device identity challenges using a scalable device graph approach. Research in this area is relevant to the domain of advertising technology as it enables a holistic view of consumers that can be extended to use cases such as improving advertisement targeting, personalized recommendations and demographic predictions. Past research efforts were limited to high-level descriptions of the steps undertaken to create a one-off, static device graph based on data collected over a circumscribed time frame, thus limiting its use in larger-scale commercial applications. In this paper, we propose a scalable solution that enables continuous, incremental revisions of our device graph. We leverage behavioral data captured by Mediacorp across its sites and platforms to build a richer device graph that is updated weekly. First, we introduce additional features and explore various classifiers to improve pairwise probability scores between devices that are likely to belong to the same user. Then, we apply community clustering algorithms to uncover device communities to establish the final device graph. Extensive experiments showed that our additive approach has consistently delivered >90% precision and recall in real-world applications.

scholarly journals The accuracy of alternative GDP growth forecasts: Do they represent a credible alternative to the official ones?

2015 ◽  
Vol 15 (3) ◽  
pp. 291-304
Author(s):  
Jiří Šindelář
Keyword(s):  
Trade Unions ◽  
Time Frame ◽  
Gdp Growth ◽  
Gradual Improvement ◽  
Error Measures ◽  
National Bank ◽  
Ministry Of Finance ◽  
Governmental Institutions ◽  
High Level ◽  
Growth Forecasts

Abstract The paper deals with the accuracy of the real GDP growth forecasts produced by two Czech non-governmental institutions: the Czech-Moravian Confederation of Trade Unions (CMKOS) and the Czech Banking Association (CBA) in the years 2007-2014 and 2011-2014 respectively. Utilizing a research method composed of simple (AFE), scale-dependent (RMSE) as well as relative (MASE) error measures, we found out that (i) CMKOS predictions achieved a lower forecasting error on average, beginning with a notable overestimation in the first turnover point from growth to decline (2008-2009), yet followed by gradual improvement resulting in superior accuracy over set benchmarks (Ministry of Finance, Czech National Bank, OECD) in later years (2010-2014). The CBA predictions, on the other hand, exhibited (ii) a high level of interconnection with official bodies (MF, CNB), but with overall inferior forecasting accuracy, despite the shorter time frame (2011-2014). Overall, the study suggests that of the two surveyed non-governmental bodies, only CMKOS forecasts represent a viable alternative to the official predictions published by the Ministry of Finance or the Czech National Bank, as CBA forecasts were found to be a less accurate satellite of these bodies.

scholarly journals Organizational culture of the Public Service and features of its change

2019 ◽  
pp. 114-122
Author(s):  
Nataliіa Sorokina
Keyword(s):  
Organizational Culture ◽  
Public Relations ◽  
Public Service ◽  
High Performance ◽  
Psychological Climate ◽  
Public Servants ◽  
Public Authorities ◽  
The Public ◽  
High Level ◽  
Motivation To Work

The article is devoted to the study of organizational culture in public service. The essence of the concept of organizational culture is considered. It has been determined that organizational culture is an interdisciplinary phenomenon which concern several fields. Therefore, there is no single approach to understanding of this concept. It is indicated that organizational culture is a distinguishing feature of every organization and is a decisive factor in the success / the failure of the whole group. In the article, the author conducted a sociological survey among public servants. The purpose of the survey was to find out what major changes have occurred in the organizational culture of public service in recent years. Based on empirical data, it has been found that changes in organizational culture are very slow. Respondents noted that the majority of elements of organizational culture remained constant, such as: the culture of appearance; the individual independence and the responsibility; the interaction of members of the organization with each other; the physical and psychological comfort; the motivation to work. It is proved that a favorable socio-psychological climate in public authorities is very important. So, the high performance indicators of the authorities, the low staff turnover, the high level of labor discipline, and the absence of tension and conflicts in the group depend on it. The important elements of organizational culture, such as the motivation to work, the culture of appearance, the communication links both within the organization (between public servants) and outside (public relations) are analyzed. It is indicated that the leader plays a key role in communication. He must directly participate in the formation of a favorable moral and psychological climate in the group. It has been established that the process of changing organizational culture is quite complicated, requires time and effort, and high level of professionalism of leader. Changes very often cause discontent of the group, they are often perceived painfully. A strong organizational culture generates a positive image of the public service, which in is turn an important factor in raising confidence in public authorities. Therefore, it is necessary to continue to studied organizational culture, to monitor its formation, to improve and to regulate its changes.  

scholarly journals Strain-Specific Genotyping of Bifidobacterium animalis subsp. lactis by Using Single-Nucleotide Polymorphisms, Insertions, and Deletions

2009 ◽  
Vol 75 (23) ◽  
pp. 7501-7508 ◽  
Author(s):  
Elizabeth P. Briczinski ◽  
Joseph R. Loquasto ◽  
Rodolphe Barrangou ◽  
Edward G. Dudley ◽  
Anastasia M. Roberts ◽  
...  
Keyword(s):  
Single Nucleotide Polymorphisms ◽  
Sequence Similarity ◽  
Nucleotide Polymorphisms ◽  
Strain Specificity ◽  
Typing Method ◽  
Single Nucleotide ◽  
Bifidobacterium Animalis ◽  
Molecular Approaches ◽  
Commercial Applications ◽  
High Level

ABSTRACT Several probiotic strains of Bifidobacterium animalis subsp. lactis are widely supplemented into food products and dietary supplements due to their documented health benefits and ability to survive within the mammalian gastrointestinal tract and acidified dairy products. The strain specificity of these characteristics demands techniques with high discriminatory power to differentiate among strains. However, to date, molecular approaches, such as pulsed-field gel electrophoresis and randomly amplified polymorphic DNA-PCR, have been ineffective at achieving strain separation due to the monomorphic nature of this subspecies. Previously, sequencing and comparison of two B. animalis subsp. lactis genomes (DSMZ 10140 and Bl-04) confirmed this high level of sequence similarity, identifying only 47 single-nucleotide polymorphisms (SNPs) and four insertions and/or deletions (INDELs) between them. In this study, we hypothesized that a sequence-based typing method targeting these loci would permit greater discrimination between strains than previously attempted methods. Sequencing 50 of these loci in 24 strains of B. animalis subsp. lactis revealed that a combination of nine SNPs/INDELs could be used to differentiate strains into 14 distinct genotypic groups. In addition, the presence of a nonsynonymous SNP within the gene encoding a putative glucose uptake protein was found to correlate with the ability of certain strains to transport glucose and to grow rapidly in a medium containing glucose as the sole carbon source. The method reported here can be used in clinical, regulatory, and commercial applications requiring identification of B. animalis subsp. lactis at the strain level.

Development of the Personal Qualities Assessment as a Tool for Selecting Medical Students

2005 ◽  
Vol 11 (1) ◽  
pp. 3-14 ◽  
Author(s):  
David Powis ◽  
Miles Bore ◽  
Donald Munro ◽  
Mary Ann Lumsden
Keyword(s):  
Cognitive Skills ◽  
Past Research ◽  
Test Results ◽  
Ethical Practice ◽  
Medical Student Selection ◽  
Selection Decisions ◽  
Wide Range ◽  
Test Component ◽  
Personal Qualities ◽  
High Level

A review of the medical student selection literature and our own past research (Lowe, Kerridge, Bore, Munro and Powis (2001) has indicated that competent and ethical practice of medicine requires doctors to possess a range of personal qualities in addition to high-level academic ability. A three-part test battery called the Personal Qualities Assessment (PQA) has been developed as a measure of some of these qualities: it consists of the Mental Agility Test (MAT), which measures cognitive skills, the Mojac scale, which measures moral orientation, and the NACE scale, which measures Narcissism, Aloofness, Confidence and Empathy. Five hundred and seven applicants for entry in October 2003 to the Scottish medical schools volunteered to complete the MAT, Mojac and NACE tests in January 2003. The test results played no part in making or informing selection decisions. The scores obtained by the candidates on each test covered a wide range, indicating that each test component has good discriminating power. Correlations between the test components were low (−0.02 to +0.17), indicating that they each measure different attributes. Since the test results were not used in making selection decisions it will be possible to relate outcome indices (e.g., examination and professional performance as the students progress through medical school) to the test component scores to seek evidence for the predictive validity of the PQA battery and thereby indicate its potential usefulness as a selection tool.

scholarly journals Active Semisupervised Clustering Algorithm with Label Propagation for Imbalanced and Multidensity Datasets

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Mingwei Leng ◽  
Jianjun Cheng ◽  
Jinjin Wang ◽  
Zhengquan Zhang ◽  
Hanhai Zhou ◽  
...  
Keyword(s):  
Clustering Algorithm ◽  
Clustering Algorithms ◽  
Label Propagation ◽  
Data Selection ◽  
Imbalanced Datasets ◽  
Active Mechanism ◽  
Real World Applications ◽  
Stable Performance ◽  
Active Data ◽  
Semisupervised Clustering

The accuracy of most of the existing semisupervised clustering algorithms based on small size of labeled dataset is low when dealing with multidensity and imbalanced datasets, and labeling data is quite expensive and time consuming in many real-world applications. This paper focuses on active data selection and semisupervised clustering algorithm in multidensity and imbalanced datasets and proposes an active semisupervised clustering algorithm. The proposed algorithm uses an active mechanism for data selection to minimize the amount of labeled data, and it utilizes multithreshold to expand labeled datasets on multidensity and imbalanced datasets. Three standard datasets and one synthetic dataset are used to demonstrate the proposed algorithm, and the experimental results show that the proposed semisupervised clustering algorithm has a higher accuracy and a more stable performance in comparison to other clustering and semisupervised clustering algorithms, especially when the datasets are multidensity and imbalanced.

scholarly journals Circular Economy Practices and Strategies in Public Sector Organizations: An Integrative Review

2020 ◽  
Vol 12 (10) ◽  
pp. 4181 ◽  
Author(s):  
Natacha Klein ◽  
Tomás Ramos ◽  
Pauline Deutz
Keyword(s):  
Public Sector ◽  
Literature Review ◽  
Service Delivery ◽  
Public Service ◽  
Circular Economy ◽  
Public Procurement ◽  
Public Service Delivery ◽  
Holistic View ◽  
The Public ◽  
Public Sector Organizations

The concept of the Circular Economy (CE) is an increasingly attractive approach to tackling current sustainability challenges and facilitating a shift away from the linear “take-make-use-dispose” model of production and consumption. The public sector is a major contributor to the CE transition not only as a policy-maker but also as a significant purchaser, consumer, and user of goods and services. The circularization of the public sector itself, however, has received very little attention in CE research. In order to explore the current state of knowledge on the implementation of CE practices and strategies within Public Sector Organizations (PSOs), this research aims to develop an overview of the existing literature. The literature review was designed combining a systematic search with a complementary purposive sampling. Using organizational sustainability as a theoretical perspective, the main results showed a scattered landscape, indicating that the limited research on CE practices and strategies in PSOs has focused so far on the areas of public procurement, internal operations and processes, and public service delivery. As a result of this literature review, an organizational CE framework of a PSO is proposed providing a holistic view of a PSO as a system with organizational dimensions that are relevant for the examination and analysis of the integration process of CE practices and strategies. This innovative framework aims to help further CE research and practice to move beyond current sustainability efforts, highlighting that public procurement, strategy and management, internal processes and operations, assessment and communication, public service delivery, human resources dimensions, collaboration with other organizations, and various external contexts are important public sector areas where the implementation of CE has the potential to bring sustainability benefits.

Public Service Motivation and Employee Change-Supportive Intention: Utilizing the Theory of Planned Behavior

2020 ◽  
pp. 009102602093451 ◽  
Author(s):  
Hemin Ali Hassan ◽  
Xiaodong Zhang ◽  
Ahmad Bayiz Ahmad ◽  
Bangcheng Liu
Keyword(s):  
Theory Of Planned Behavior ◽  
Planned Behavior ◽  
Public Service ◽  
Past Research ◽  
Subjective Norm ◽  
Public Organizations ◽  
Public Service Motivation ◽  
Theory And Practice ◽  
Perceived Behavioral Control ◽  
The Relationship

Implementing change is considered as a difficult task for public organizations. Some individual dispositional factors have been suggested to influence recipient responses to change in public organizations. Past research has shown a link between public service motivation (PSM) and employee positive responses to organizational change. However, the psychological processes underlining this relationship are not specified. Building on the PSM theory and the theory of planned behavior (TPB), this study examines the role of psychological variables (attitude, subjective norm, and perceived behavioral control) in mediating the relationship between PSM and change-supportive intention. A sample of 143 employees is collected from a public university in the Kurdistan Region of Iraq that was going through a change initiative. The results revealed that PSM predicts change-supportive intention, and the relationship between PSM and change-supportive intention is mediated by change-related attitude and subjective norm. The implications of the findings for theory and practice are discussed.

Change readiness as fluid trajectories: a longitudinal multiple-case study

2018 ◽  
Vol 31 (5) ◽  
pp. 1153-1175 ◽  
Author(s):  
Florian Hemme ◽  
Matthew T. Bowers ◽  
Janice S. Todd
Keyword(s):  
Public Service ◽  
Resistance To Change ◽  
Multiple Case Study ◽  
Relative Strength ◽  
Change Readiness ◽  
Content Type ◽  
External Stakeholder ◽  
Multiple Case ◽  
High Level

Purpose The purpose of this paper is to analyze change process perceptions of public service employees and document how change readiness belief salience fluctuates and evolves throughout the implementation of a major organizational restructuring effort. Design/methodology/approach This research is a longitudinal multiple-case study of a major transformation initiative in a large North American public recreation organization. Over the course of 15 months, the authors conducted four rounds of personal interviews with 19 participants (65 interviews in total, each lasting 25–45 min). Additionally, the authors analyzed internal e-mail correspondence, memos, and meeting agendas, as well as external stakeholder communication. Finally, the primary researcher spent a significant amount of time collecting field notes while shadowing high-level managers and employees and attending meetings. Findings Overall, the authors documented a clear hierarchy of change readiness dimensions. The relative strength and temporal persistence of these dimensions can be traced back to various public organizing particularities. Moreover, the authors found that an initial focus on some readiness dimensions facilitated subsequent sensemaking processes whereas others hindered such engagement with the change project. Research limitations/implications This research is the first to empirically document temporal fluidity of change readiness dimensions and salience. Moreover, it offers a rare in-depth look at a changing public service organization. Practical implications This research helps change agents in developing tailored change messages and to better understand potential sources of frustration and resistance to change efforts. Originality/value No similar efforts exist to document the underlying dynamism of evolving change readiness perceptions.

Tactual Speech Perception by Minimally Trained Deaf Subjects

1980 ◽  
Vol 23 (4) ◽  
pp. 769-778 ◽  
Author(s):  
D. Kimbrough Oller ◽  
Shelley Lynn Payne ◽  
William J. Gavin
Keyword(s):  
Past Research ◽  
Pattern Perception ◽  
Speech Comprehension ◽  
Speech Sounds ◽  
Small Areas ◽  
Brief Training ◽  
Hearing Devices ◽  
Perceptual Performance ◽  
Phonetic Contrasts ◽  
High Level

Research on tactual perception of speech has shown that many phonetic contrasts can be transmitted to the deaf through artificial hearing devices that stimulate the sense of touch. Past research has emphasized long-term training with tactual reception or the achievement of maximal perceptual performance. The present study demonstrates that, with a brief training period, deaf adolescents can attain a high level of perceptual performance with a tactual speech system in discrimination of certain hard-to-lipread word pairs pronounced by both a male and a female speaker. Thus some speech sounds previously indistinguishable by the deaf people can be immediately available for speech comprehension through the tactual vocoder; and other speech sounds will be recognized with further training. The reason that some contrasts are learned quickly and others require extensive training may be found in a pattern perception postulate proposed by Gavin (1979): word patterns that result in stimulation across a greater area of skin tend to be more discriminable than word patterns which stimulate only small areas of the skin.

Features of interval training and their advantages in the development of physical strength, speed and agility in the teaching of an employee of internal affairs bodies

2019 ◽  
pp. 113-119
Author(s):  
Dmitry Kolesnichenko ◽  
Yuri Polunin
Keyword(s):  
Physical Fitness ◽  
Interval Training ◽  
Time Frame ◽  
Physical Endurance ◽  
Physical Strength ◽  
Fitness Level ◽  
Single Complex ◽  
Internal Affairs ◽  
High Level ◽  
Working Out

The relevance of interval training study is due to the peculiarities of training employees of internal affairs bodies, who are required to have a high level of physical fitness and be ready for a long period of physical activity. Protecting public order and ensuring public security often require considerable physical effort from an employee, as there is a need to prosecute and detain the offender, the criminal, and, in particular, the use of combat techniques. For all of the above, it is necessary not only to be technically and tactically trained, but also physically developed, pos-sessing such qualities as strength, speed and agility. This necessitates the development of interval training and shows their advantages in the development of these qualities in the training of an em-ployee of the internal affairs bodies. The purpose of the presented research is to analyze the fea-tures of interval training and their advantages in the development of physical strength, speed and agility in the training of internal affairs employee. The methods base of the study is the method of physical training of internal affairs employees on the basis of order content of the Ministry of In-ternal Affairs of Russia of July 1, 2017 no. 450, which approved the instruction on the organiza-tion of classes with the internal affairs bodies of the Russian Federation in order to improve their physical fitness level, as well as the results of observations methods of interval training for the most qualitative increase in the level of physical indicators in the power and speed indicators for three months. We draw attention to the order of working out a number of power qualities, such as: bending and unbending arms in the supine position (push-ups), bending and unbending arms in hanging on the crossbar (pulling up), pressing weights, etc., as well as the method of exercise for speed, quickness and agility, various types of shuttle running for various distances, for intervals set to perform these exercises. The novelty of the study is to combine exercises on physical endurance increase into a single complex, which includes exercises of multidirectional nature and the time frame during which the exercises are performed in different tempo tasks, and the correct time for recovery is taken into account. An important fact is that the time for these interval workouts is no more than 15 minutes, and the amount of accomplishment is very significant.

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