scholarly journals Pointed versus singular Boltzmann samplers: a comparative analysis

2015 ◽  
Vol 25 (2) ◽  
pp. 115-131 ◽  
Author(s):  
Olivier Bodini ◽  
Antoine Genitrini ◽  
Nicolas Rolin

Abstract Since the last two decades huge systems (such as giant graphs, big data structures, . . . ) have played a central role in computer science, and with the technology improvements, those large objects are now massively used in practice. In order to handle them we need to analyse some typical properties of models of large objects. One way to study typical behaviours consists in generating random objects to get some experimental results on their properties. A new technique has been introduced ten years ago: the Boltzmann sampling. It has been presented by Duchon et al, and is based on automatic interpretation in terms of samplers of the specification of the combinatorial objects under study. One of the core problem in Boltzmann sampling lies in the distribution of the object sizes, and the choice of some parameters in order to get the more appropriate size distribution. From this choice depends the efficiency of the sampling. Moreover some additional ideas allows to improve the efficiency, one of them is based on some anticipated rejections, the other one on the combinatorial differentiation of the specification. Anticipated rejection consists during the recursive building of a random object to kill the process as soon as we are sure to exceed the maximum target size, rather than waiting until the natural end of the process. In the original paper, while both approaches have been presented, and used on the same kind of structures, the methods are not compared. We propose in this paper a detailed comparison of both approaches, in order to understand precisely which method is the more efficient.

2013 ◽  
Vol 694-697 ◽  
pp. 284-287
Author(s):  
Wen Sun ◽  
San Min Wang ◽  
Tao Ren ◽  
Wen Tao Qu

Centric slider-crank mechanism forms the main mechanism of slider-crank type cluster well pumping unit(SCTCWPU). The friction and wear is the core problem of (SCTCWPU). The pressure of the slide upon the rail is one of the major factors of the friction and wear between the roller and rail.This paper presents the static analysis and optimization of the structure of the slide. In addition,a comparative analysis of the two types of the slide’s structure is made on the basis of actual working conditions.


2020 ◽  
Vol 3 (2) ◽  
pp. 143-154
Author(s):  
Taufik Nurhadi

This study is aimed at describing of the impasse understanding of the polemic of the Nusantara Islamic discourse. The data were in the form of Indonesian language used in the polemic of the pros and cons of the Nusantara Islam issue, which is published on social media, Youtube. Data collection uses the method of listening with tapping, SBLC, download, and note techniques. The data analysis method used is Constant Comparative Analysis. The results of the analysis showed that there was a deadlock in understanding the issues of the Nusantara Islamic discourse regarding 4 things, namely symbolic identity, rejection in terms of terms, classic rivalry between tribes, and culture as the core problem. The deadlock of understanding was triggered by long competition between the two circles of Muhammadiyah and Nahdatul Ulama in viewing worship practices from different perspectives.


2014 ◽  
Vol 971-973 ◽  
pp. 1590-1593 ◽  
Author(s):  
Chun Yan Xue

The core objective of Big Data technology is trying to dig out valuable information from massing huge variety of data structures. In order to achieve these goals, Big Data technology must be combined with machine learning. The uniqueness of Big Data has also brought unprecedented challenges to machine learning, in order to cope with these challenges machine learning should focus on the development of semi-supervised learning method, integrated learning with device integration and transfer learning method.


Author(s):  
S. Schade

Most data sets and streams have a geospatial component. Some people even claim that about 80% of all data is related to location. In the era of Big Data this number might even be underestimated, as data sets interrelate and initially non-spatial data becomes indirectly geo-referenced. The optimal treatment of Big Data thus requires advanced methods and technologies for handling the geospatial aspects in data storage, processing, pattern recognition, prediction, visualisation and exploration. On the one hand, our work exploits earth and environmental sciences for existing interoperability standards, and the foundational data structures, algorithms and software that are required to meet these geospatial information handling tasks. On the other hand, we are concerned with the arising needs to combine human analysis capacities (intelligence augmentation) with machine power (artificial intelligence). This paper provides an overview of the emerging landscape and outlines our (Digital Earth) vision for addressing the upcoming issues. We particularly request the projection and re-use of the existing environmental, earth observation and remote sensing expertise in other sectors, i.e. to break the barriers of all of these silos by investigating integrated applications.


Never Trump ◽  
2020 ◽  
pp. 13-39
Author(s):  
Robert P. Saldin ◽  
Steven M. Teles

Chapter 2 discusses how the John Hay Initiative, the Republican foreign policy establishment, became the purest strain of Never Trumpism. The John Hay Initiative was designed to create a firewall around the heresies of Rand Paul and to help the other Republican candidates competently defend their vision of conservative internationalism. However, no one around the project imagined that their party would be tempted by a figure like Donald Trump. Trump's candidacy threw them into a world of uncertainty, in which all of their experience and strategies were suddenly rendered unhelpful or even counterproductive. In sharp contrast to most of the rest of the groups discussed in this book, they responded to Trump with open, furious, and mostly unified opposition. There were two primary reasons that people within the Republican national security network offer for having gone Never Trump. First, many were mortified at Trump's statements on foreign policy issues. Even so, most Never Trumpers in the foreign policy network say that their objections ran deeper than policy disputes; it was Trump's fundamental and unredeemable character flaws that constituted the core problem.


2020 ◽  
Vol 12 (2) ◽  
Author(s):  
JM. Muslimin ◽  
Yulia Fatma

Abstract: The core problem examined in this paper is the practice of sharing assets in the Religious Courts. The article aims to prove that the justice provided by the judge in the distribution of joint assets is not only textually in accordance with applicable regulations, but by considering comprehensively, so that it can reflect the actuality. The urgency of this research is to emphasize that justice in the distribution of sharing assets cannot be interpreted as saying that each party must get an equal share. Justice can refer to the contributions made by both parties, both material and non-material. The used method of research focuses on a normative approach which is sharpened empirically. The normative approach requires a juridical and philosophical exploration, while empirical through the sociological approach. The results of the study conclude that the decisions of the Religious Courts regarding sharing assets are not always in accordance with the provisions of the Islamic Law Compilation (Kompilasi Hukum Islam).Keywords: justice; join assets; judges’ decision.Abstrak: Masalah utama yang dikaji dalam tulisan ini adalah praktik pembagian harta bersama di Peradilan Agama. Tulisan bertujuan untuk membuktikan bahwa keadilan yang diberikan oleh hakim dalam pembagian harta bersama tidak hanya semata tekstual sesuai aturan yang berlaku, akan tetapi dengan mempertimbangkan secara komprehensif, sehingga dapat mencerminkan sisi aktualitasnya. Urgensi penelitian ini untuk menegaskan bahwa keadilan dalam pembagian harta bersama, tidak bisa diartikan menjadi setiap pihak harus mendapatkan bagian yang sama rata. Keadilan dapat mengacu kepada kontribusi yang diberikan oleh kedua belah pihak, baik secara materi maupun non-materi. Sementara metode yang digunakan mentitikberatkan pada pendekatan normatif dan dipertajam dengan empiris. Pendekatan normatif meniscayakan uji putusan secara yuridis dan filosofis. Sedangkan empiris, melalui sisi sosiologis. Hasil penelitian menyimpulkan bahwa putusan Peradilan Agama tentang harta bersama tidak selalu sesuai dengan ketentuan Kompilasi Hukum Islam (KHI).Kata Kunci: keadilan; harta bersama; putusan hakim.


Social media is become one of the most popular application. Commonly social media is used for communication and social activities. Thus a significant amount of data is produced in these platforms and handling of these data requires advance data handling techniques thus big data is used to deal with such huge data. On the other hand, now in these days attackers and phishers are also active on social media. These attackers create fake profiles and trap the users to still their confidential and sensitive information. In this context the fake profiles are one of the serious problems in these days in social media. In this presented work a new technique for detecting the social media anomaly profile is prepared and their implementation is described in this paper. In addition of that the experimental analysis on real twitter profiles are also performed for 1200 profile features. To process these data two BIG data utilities are used namely PIG and HIVE is used. These profile features are collected from the live twitter data and evaluation of different profiles. The experimental results are compared for both the utilities (i.e. PIG and Hive) to demonstrate the successfully identification of legitimate and anomaly profiles.


2007 ◽  
Vol 21 (1) ◽  
pp. 59-72
Author(s):  
Mathew J. Manimala ◽  
P.D. Jose ◽  
K. Raju Thomas

The research literature is rich on innovations in R&D-specific organizations and provides useful information on support systems and other organizational features associated with such specialized organizations. An implied assumption of many studies is that R&D exists as an independent entity, without controls or influences from the other functions of an organization. While this may be true for purely R&D organizations, the picture is different when R&D is organized as part of a larger system in which the core activities centre on operating departments. This is the pattern in developing countries like India, where most R&D activities are carried out in departments/divisions of companies that were established primarily for operational purposes. In this study, 31 cases of innovation (15 from R&D centres and 16 from operating departments of large corporations in India) are analysed using a qualitative method of content analysis of data collected through in-depth interviews. While this comparative analysis highlights the need for specific organizational support systems to cater for the specific requirements of the two groups, the most prominent findings on intrapreneurship are that it is facilitated primarily by the flexibility of the R&D scientists to work in their core as well as related areas and the continuous and issue-based interaction between the R&D centres and operating departments.


2003 ◽  
pp. 15-26
Author(s):  
P. Wynarczyk
Keyword(s):  
The Core ◽  

Two aspects of Schumpeter' legacy are analyzed in the article. On the one hand, he can be viewed as the custodian of the neoclassical harvest supplementing to its stock of inherited knowledge. On the other hand, the innovative character of his works is emphasized that allows to consider him a proponent of hetherodoxy. It is stressed that Schumpeter's revolutionary challenge can lead to radical changes in modern economics.


Derrida Today ◽  
2010 ◽  
Vol 3 (1) ◽  
pp. 21-36
Author(s):  
Grant Farred

‘The Final “Thank You”’ uses the work of Jacques Derrida and Friedrich Nietzsche to think the occasion of the 1995 rugby World Cup, hosted by the newly democratic South Africa. This paper deploys Nietzsche's Zarathustra to critique how a figure such as Nelson Mandela is understood as a ‘Superman’ or an ‘Overhuman’ in the moment of political transition. The philosophical focus of the paper, however, turns on the ‘thank yous’ exchanged by the white South African rugby captain, François Pienaar, and the black president at the event of the Springbok victory. It is the value, and the proximity and negation, of the ‘thank yous’ – the relation of one to the other – that constitutes the core of the article. 1


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