An LSH Index for Computing Kendall's Tau over Top-k Lists

We consider the problem of similarity search within a set of top-k lists under the Kendall's Tau distance function. This distance describes how related two rankings are in terms of concordantly and discordantly ordered items. As top-k lists are usually very short compared to the global domain of possible items to be ranked, creating an inverted index to look up overlapping lists is possible but does not capture tight enough the similarity measure. In this work, we investigate locality sensitive hashing schemes for the Kendall's Tau distance and evaluate the proposed methods using two real-world datasets.Comment: 6 pages, 8 subfigures, presented in Seventeenth International Workshop on the Web and Databases (WebDB 2014) co-located with ACM SIGMOD201

Finding co-solvers on Twitter, with a little help from Linked Data

In this paper we propose a method for suggesting potential collaborators for solving innovation challenges online, based on their competence, similarity of interests and social proximity with the user. We rely on Linked Data to derive a measure of semantic relatedness that we use to enrich both user profiles and innovation problems with additional relevant topics, thereby improving the performance of co-solver recommendation. We evaluate this approach against state of the art methods for query enrichment based on the distribution of topics in user profiles, and demonstrate its usefulness in recommending collaborators that are both complementary in competence and compatible with the user. Our experiments are grounded using data from the social networking service Twitter.com

EKSPERIMEN PENCIPTAAN MUSIK NUSANTARA UNTUK PENGEMBANGAN FILSAFAT ILMU PENCIPTAAN MUSIK

Materi yang menjadi objek penelitian ini adalah elemen-elemen garap dalam musik Nusantara. Objek tersebut diteliti aspek pragmatisnya untuk dipilih menjadi bahan penyusunan karya musik baru. Penyusunan musik baru dilakukan dengan menggunakan pendekatan reinterpretatif kontemporer, sebuah pendekatan yang mempertimbangkan eksistensi tradisi dengan mengutamakan tumbuhnya eksistensi musik berbasis pengembangan dan kebaruan. Penyusunan dilakukan dalam rangka pengolahan dan pengembangan cultural heritage. Hal ini diperlukan karena cultural heritage merupakan atribut jatidiri bangsa atau masyarakat yang menerima warisan budaya dari generasi-generasi sebelumnya, untuk kemaslahatan generasi yang akan datang. Jadi, dengan semangat mengolah dan mengembangkan cultural heritage penelitian ini bermaksud untuk melestarikan dan mengembangkan elemen-elemen musikal sebagai warisan budaya. Penelitian ini merupakan penelitian eksperimen di laboratorium/studio didukung dengan field work atau penelitian lapangan. Penelitian lapangan di tahun pertama direncanakan dilaksanakan di Bali, Banyuwangi, Surabaya, Bandung, Cirebon. Namun, karena keterbatasan anggaran hanya dapat dilaksanakan di Bali, Surabaya, dan Bandung. Target capaian pada tahun 2017 adalah terpublikasikannya hasil penelitian ini melaui Jurnal Panggung (jurnal Nasional terakreditasi). Namun, publikasi ke Jurnal Panggung agak terkendala karena terbatasnya kuota artikel yang diterbitkan. Oleh karena itu publikasi segera diarahkan pada jurnal internasional terindeks scopus. Ada dua artikel yang dikirim ke jurnal internasional, yaitu artijel berjudul Composer’ Frame of Thingking in Music Creation yang diajukan ke Philosophia (International Journal of Philosophy), dan artikel berjudul The Pillars of the Study of Art Creation pada jurnal Pensamiento (International Journal of Music). Philosophia telah memberitahukan bahwa hasil review sekarang akan diterbitkan pada periode Januari 2019, dan sedangkan Pensamiento masih menunggu hasil review. Jadi, target penerbitan artikel belum dapat dilaksanakan tahun ini, sehingga tahun ini hanya submit saja di jurnal internasional terindeks Scopus. Untuk menggantinya, diupayakan bahwa pada bulan Desember tahun 2017 dapat diterbitkan satu buku sebagai hasil penelitian. Target capaian yang lain adalah terciptanya 1 karya komposisi musik baru. Karya tersebut telah dirumuskan, disusun, dan telah dipersiapkan sedemikian rupa. Rekaman karya sudah terwujud dan dapat dinikmati. Artinya, model karya musik sebagai satu target telah selesai dikerjakan, dan tinggal dilakukan reinterpretasi dan rekonstruksi melalui latihan-latihan dan eksperimen studio

Why “They” never can be as good as “Us”: How other organizations must be worse off on essential features

Being different from competitors, in a positive sense, is an important asset to organizations. Well-chosen emphasis on distinctive organizational features is very helpful in achieving a superior position relative to rival organizations. However, organizations often claim to be distinctive on features where they appear be at best only moderately distinctive. Systematic bias seems to arise because what members see as distinctive about their organization is so closely interwoven with how they see its identity. In this study, organization members rated competitors systematically lower on a feature to the extent that they considered that feature to make up the essence of the identity of their own organization. The results point to a serious tendency to underestimate comparable competitors as a consequence of the social comparison heuristics. Managerially, this implies an important caution when designing corporate strategy and positioning

ROMANIA WITHIN THE EUROPEAN UNION AND THE REQUIREMENTS OF THE KNOWLEDGE-BASED SOCIETY – THE NEED OF CATCHING-UP THROUGH ARTICULATED STRATEGIES

The major challenge for individuals, firms and countries, as well was, until recently, to ensure sustainable global competitiveness; but, into the new circumstances of the knowledge-based society, this seems to be an even harder to get objective – especially for the entities which have not reached yet a minimal level of measurable performances on the defining coordinates of the knowledge based society. The conclusion – not only logical, but also necessary – is that any strategy aiming the transition to the knowledge-based society must integrate a series of well defining and indispensable elements. The measure of its efficiency and effectiveness will be given by its ability to ensure a sustainable competitiveness in the global, knowledge-based economy.knowledge-based society, research-development-innovation, strategy, innovative performance and competitiveness

Linked Data Entity Summarization

On the Web, the amount of structured and Linked Data about entities is constantly growing. Descriptions of single entities often include thousands of statements and it becomes difficult to comprehend the data, unless a selection of the most relevant facts is provided. This doctoral thesis addresses the problem of Linked Data entity summarization. The contributions involve two entity summarization approaches, a common API for entity summarization, and an approach for entity data fusion

An Investigation into the Challenges of Joint Basing

The 2005 Base Realignment and Closure (BRAC) went farther than any other previous BRAC in attempting to discover budgetary efficiencies by redefining domestic military infrastructure. BRAC recommendation #146 set into motion the construct of joint basing in which installation support responsibilities were transferred to lead-Components resulting in 12 major mergers of 26 military installations. Much has been written on the cost savings progress of joint bases; however little has been written in academia as to the implementation challenges that have hindered true cost savings from being realized. This research leverages the Delphi Method in capturing and ranking the top issues to aid senior leaders in resource allocation decision-making. Leaders from base support functions such as logistics, force support, security forces, civil engineering, and command staff comprised the expert panel that led to the identification of the top 13 joint basing challenges. This research was scoped to one AF-led, Navy-supported joint base, but has transportability to other joint bases and contributes to the mergers and acquisitions body of knowledge. The results of this research validate the current issues plaguing joint bases and consider the implications of future joint basing efforts

Unsupervised Contrast-Consistent Ranking with Language Models

Language models contain ranking-based knowledge and are powerful solvers of in-context ranking tasks. For instance, they may have parametric knowledge about the ordering of countries by size or may be able to rank reviews by sentiment. Recent work focuses on pairwise, pointwise, and listwise prompting techniques to elicit a language model's ranking knowledge. However, we find that even with careful calibration and constrained decoding, prompting-based techniques may not always be self-consistent in the rankings they produce. This motivates us to explore an alternative approach that is inspired by an unsupervised probing method called Contrast-Consistent Search (CCS). The idea is to train a probing model guided by a logical constraint: a model's representation of a statement and its negation must be mapped to contrastive true-false poles consistently across multiple statements. We hypothesize that similar constraints apply to ranking tasks where all items are related via consistent pairwise or listwise comparisons. To this end, we extend the binary CCS method to Contrast-Consistent Ranking (CCR) by adapting existing ranking methods such as the Max-Margin Loss, Triplet Loss, and Ordinal Regression objective. Our results confirm that, for the same language model, CCR probing outperforms prompting and even performs on a par with prompting much larger language models