Value-Compressed Sparse Column (VCSC): Sparse Matrix Storage for Redundant Data

Compressed Sparse Column (CSC) and Coordinate (COO) are popular compression formats for sparse matrices. However, both CSC and COO are general purpose and cannot take advantage of any of the properties of the data other than sparsity, such as data redundancy. Highly redundant sparse data is common in many machine learning applications, such as genomics, and is often too large for in-core computation using conventional sparse storage formats. In this paper, we present two extensions to CSC: (1) Value-Compressed Sparse Column (VCSC) and (2) Index- and Value-Compressed Sparse Column (IVCSC). VCSC takes advantage of high redundancy within a column to further compress data up to 3-fold over COO and 2.25-fold over CSC, without significant negative impact to performance characteristics. IVCSC extends VCSC by compressing index arrays through delta encoding and byte-packing, achieving a 10-fold decrease in memory usage over COO and 7.5-fold decrease over CSC. Our benchmarks on simulated and real data show that VCSC and IVCSC can be read in compressed form with little added computational cost. These two novel compression formats offer a broadly useful solution to encoding and reading redundant sparse data

Usage, Costs, and Benefits of Continuous Integration in Open-Source Projects

Continuous integration (CI) systems automate the compilation, building, and testing of software. Despite CI rising as a big success story in automated software engineering, it has received almost no attention from the research community. For example, how widely is CI used in practice, and what are some costs and benefits associated with CI? Without answering such questions, developers, tool builders, and researchers make decisions based on folklore instead of data. In this paper, we use three complementary methods to study in-depth the usage of CI in open-source projects. To understand what CI systems developers use, we analyzed 34,544 open-source projects from GitHub. To understand how developers use CI, we analyzed 1,529,291 builds from the most popular CI system. To understand why projects use or do not use CI, we surveyed 442 developers. With this data, we answered 14 questions related to the usage, cost, and benefits of CI. Among our results, we show evidence that supports the popular claim that CI helps projects release more often. We also discovered that 70% of the most popular projects from GitHub use CI, as well as finding that the overall percentage of projects using CI continues to grow, making it important and timely to focus more research on CI

Continuous Integration (CI) Needs and Wishes for Developers of Proprietary Code

Continuous integration (CI) systems automate the compilation, building, and testing of software. Despite CI being one of the most widely used processes in software engineering, we do not know what motivates developers to use CI, and what barriers and unmet needs they face. Without such knowledge developers make easily avoidable errors, managers reduce the productivity of developers by making misinformed decisions, tool builders invest in the wrong direction, and researchers miss many opportunities for improving the software engineering practice. Given the large fraction of proprietary code development, understanding how proprietary developers are using CI is vital to improving it. We present the first study of how CI is used in the proprietary development of software. We conduct 16 semi-structured interviews with developers from different industries and development scale. We generalize these findings by surveying 523 developers from all over the world. We find that 78% of developers feel more productive when using CI, and 85% think that using CI causes developers to give more value to automated testing. However, unlike open-source developers, many proprietary developers want to use CI but are not allowed to do so. 50% of developers have problems troubleshooting CI builds, and more than half of developers want easier configurations for CI tools and services

[[alternative]]Preliminary experiential marketing research of Live House : the case study of Live House of Taipei City

碩士[[abstract]]近年來，文化創意產業此種軟實力在促進國家經濟成長上扮演著重要的角色，並且在世界貿易上創下驚人的獲利，其原因在於具有高附加價值的特性。 而本文所指涉之音樂藝文產業已行之有年，台灣音樂產業環境隨著當代風格社會的成形，非主流音樂的追隨與聆聽也不再如過往般弱勢及陰鬱之形象，而產業中聯繫樂團與樂迷的重要平台—Live House除早年於台北公館區域所群聚而成的商業聚落外，近年台灣各地相繼出現新興Live House，遍地開花的Live House無不發展出自身強烈特色以吸引樂迷前往消費，鑒於此，Live House間也漸從競合關係走向競爭態勢，而除了演出樂團成為選擇的主要因素外，Live House其所提供之空間氛圍差異變成了樂迷最直接之體驗。 是故，本研究選定以台北市之Live House作為本研究案例，聚焦於公館地區以及華山1914文化創意產業園區，並以學者B.Schmitt所提出體驗行銷之策略體驗模組(Strategic Experiential Modules, SEMs)以及Chang與Horng所提出之體驗品質中服務提供者面向進行樂迷Live House體驗分析。 研究結果發現，公館地區Live House在情感、思考、行動以及關聯體驗有較為豐富之體驗；而在華山1914文化創意產業園區中的Legacy Taipei傳音樂展演空間，於感官體驗以及服務提供者體驗上，獲得較為豐富之體驗，而在情感、思考、行動以及關聯體驗這些層面上，僅有部分受訪者提出體驗特點。[[abstract]]In recent years, the soft power of cultural and creative industries play an important role in promoting national economic growth, and got a lot of profit. The reason to this situation is that it comes along with the high value-added features. The music arts industry that we mention in this article has been followed for years. Taiwan music industry environment with contemporary the lifestyle society forming, non-mainstream music do not show the vulnerable and gloomy image anymore. In addition to the early years be established Live House in Taipei, parts of Taiwan in recent years have appeared the emerging Live House, and the blossom everywhere Live House are all developed their own strong characteristics to attract fans, in view of this, Live House also gradually from competing relationship toward the competitive situation, and in addition to the performances of the band became the main factor, the Live House they provide atmosphere of space have become the direct experience. Therefore, this study selected Live House of Taipei City as the research object, focus on the Gong Guan Area and Huashan1914 Creative Park and scholar B. Schmitt Experiential Marketing research base, supplemented by Strategic Experiential Modules (Strategic Experiential Marketing Modules, SEMs) and according to Chang and Horng''s service providers of experience quality to operate the fans Live House experience analysis. The results showed that fans have abundant experience in the Live House of Gong Guan Area, mostly in the in the feel, think, act and relate dimensions. Legacy Taipei provides the great experience in the sensory and the service provider dimensions. However, in the feel, think, act and relate dimensions are weak, only part of the respondents put forward features.[[tableofcontents]]第一章 緒論 1 第一節 研究背景 1 第二節 研究動機 5 第三節 研究問題 6 第四節 研究流程 8 第二章 文獻探討 9 第一節 體驗行銷 9 第二節 體驗行銷策略模組與體驗品質 19 第三節 台灣Live House文化相關研究 24 第三章 研究方法 26 第一節 研究方法 26 第二節 案例介紹、訪談大綱及研究對象 27 第四章 資料分析 42 第一節 感官體驗 42 第二節 情感體驗 49 第三節 思考體驗 54 第四節 行動體驗 58 第五節 關聯體驗 63 第六節 服務提供者 68 第五章 結論與建議 73 第一節 研究結論 73 第二節 研究建議 76 第三節 研究限制 77 參考文獻 79 附錄 83 圖目錄 圖1-1：研究流程 8 圖2-1：經濟價值遞進 11 圖2-2：傳統行銷的四大特徵 11 圖2-3：體驗行銷的四大特徵 13 圖2-4：體驗的四國度 15 圖2-5：3-S模式 18 圖2-6：策略體驗模組 19 圖2-7：風格之主要要素 20 圖2-8：整體印象的各種層面 21 圖2-9：The Wall這牆音樂展演空間(外部) 29 圖2-10：The Wall這牆音樂展演空間(內部) 29 圖2-11：公館河岸留言 (外部) 30 圖2-12：公館河岸留言 (內部) 30 圖2-13：海邊的卡夫卡 (外部) 31 圖2-14：海邊的卡夫卡 (內部) 31 圖2-15：女巫店 (外部) 32 圖2-16：女巫店 (內部) 32 圖3-1：華山1914創意園區空間 33 圖4-1：【Legacy Taipei傳】官網場地租借業務標示 51 圖4-2：女巫店於客席區置放女性內衣 54 表目錄 表1-1：台灣實體唱片銷售量統計 2 表2-1：各種經濟型態 10 表2-2：各種行銷方式的訴求焦點 12 表2-3：策略體驗模組 五個形式行銷策略目標 22 表2-4：體驗品質五大面向 23 表3-1：受訪者背景介紹 38 表4-1：感官體驗特點 48 表4-2：情感體驗特點 53 表4-3：公館地區Live House 與【Legacy Taipei 傳】思考體驗特點比較 57 表4-4：行動體驗特點 62 表4-5：關聯體驗特點 68 表4-6：公館地區Live House 與【Legacy Taipei 傳】服務提供者體驗特點比較 72 表5-1：公館地區Live House體驗特點 73 表5-2：【Legacy Taipei傳】體驗特點 74[[note]]學號: 698050175, 學年度: 10

Murder Ballads

Violence and murder have a strong cultural currency, the implications of which should be pursued by those with an interest in law and society, crime, and justice. Murder ballads are songs about death and killing with a history stretching back to the nineteenth century. Drawing out the major themes of this genre can help scholars gain a handle on how murder has been treated in popular culture, thereupon providing an enhanced understanding of the human condition. As an example of such examination, 2016 marked the twentieth anniversary of Nick Cave and the Bad Seeds’ Murder Ballads, their most famous and, perhaps, defining album. More than any other Bad Seeds album, Murder Ballads captures the essence of a band at its most comfortable in exploring the dark and the taboo: violence, killing, death. In producing a whole album on murder, the band left a calling card by which the wider public could define them. This article will explore the album by considering its key themes and, in so doing, reflect on the need to understand the use of murder in such popular music. The use of murder and death in popular music has not been properly studied, yet it offers potential social insight for several fields of study such as law, criminology, and psychology. In particular, little considered issues around the treatment of murder in popular culture such as humour are identified, while others that require greater attention such as attitudes to women are also given due consideratio

MAUS Source Code

The source code of the MICE Analysis User Software (MAUS). <strong></strong><br><br>MAUS is the software framework used by the Muon Ionization Cooling Experiment (MICE) collaboration to provide Monte Carlo simulation of the beam and detector responses (via GEANT4), both offline and online data reconstruction and various data analysis tools. It also provides a framework for collaborators to build their own offline data-analysis tools.<br><br>https://launchpad.net/maus<br