arXiv subjects

Renato Fabbri

Publications and source records attributed to Renato Fabbri.

At least 19 recordsLinked to original sources

arXiv2018

Basic concepts and tools for the Toki Pona minimal and constructed language: description of the language and main issues; analysis of the vocabulary; text synthesis and syntax highlighting; Wordnet synsets

A minimal constructed language (conlang) is useful for experiments and comfortable for making tools. The Toki Pona (TP) conlang is minimal both in the vocabulary (with only 14 letters and 124 lemmas) and in the (about) 10 syntax rules. The language is useful for being a used and somewhat established minimal conlang with at least hundreds of fluent speakers. This article exposes current concepts and resources for TP, and makes available Python (and Vim) scripted routines for the analysis of the language, synthesis of texts, syntax highlighting schemes, and the achievement of a preliminary TP Wordnet. Focus is on the analysis of the basic vocabulary, as corpus analyses were found. The synthesis is based on sentence templates, relates to context by keeping track of used words, and renders larger texts by using a fixed number of phonemes (e.g. for poems) and number of sentences, words and letters (e.g. for paragraphs). Syntax highlighting reflects morphosyntactic classes given in the official dictionary and different solutions are described and implemented in the well-established Vim text editor. The tentative TP Wordnet is made available in three patterns of relations between synsets and word lemmas. In summary, this text holds potentially novel conceptualizations about, and tools and results in analyzing, synthesizing and syntax highlighting the TP language.

cs.CY↗

arXiv2017

An anthropological account of the Vim text editor: features and tweaks after 10 years of usage

The Vim text editor is very rich in capabilities and thus complex. This article is a description of Vim and a set of considerations about its usage and design. It results from more than ten years of experience in using Vim for writing and editing various types of documents, e.g. Python, C++, JavaScript, ChucK programs; \LaTeX, Markdown, HTML, RDF, Make and other markup files; % TTM binary files. It is commonplace, in the Vim users and developers communities, to say that it takes about ten years to master (or start mastering) this text editor, and I find that other experienced users have a different view of Vim and that they use a different set of features. Therefore, this document exposes my understandings in order to confront my usage with that of other Vim users. Another goal is to make available a reference document with which new users can grasp a sound overview by reading it and the discussions that it might generate. Also, it should be useful for users of any degree of experience, including me, as a compendium of commands, namespaces and tweaks. Upon feedback, and maturing of my Vim usage, this document might be enhanced and expanded.

cs.HC↗

arXiv2017

Vivace: a collaborative live coding language and platform

Live coding is a performance and creative technique based on improvised and interactive coding. Many recent endeavors have focused in live coding both because of aesthetics and as a way to alleviate performance drawbacks when the musical instrument is a computer. This paper describes the principles and the design of Vivace, a live coding language and environment built with Web technologies to be executed on web browsers. The approach is compelling by 1) allowing many performers to code simultaneously, 2) the synthesis of audio and video, 3) a very simple syntax, 4) being a multiplatform software. We also strive to contextualize Vivace by means of historical and usage summaries including a live coding sub-genre.

cs.CY↗

arXiv2017

Social Participation Ontology: community documentation, enhancements and use examples

Participatory democracy advances in virtually all governments and especially in South America which exhibits a mixed culture and social predisposition. This article presents the "Social Participation Ontology" (OPS from the Brazilian name \emph{Ontologia de Participação Social}) implemented in compliance with the Web Ontology Language standard (OWL) for fostering social participation, specially in virtual platforms. The entities and links of OPS were defined based on an extensive collaboration of specialists. It is shown that OPS is instrumental for information retrieval from the contents of the portal, both in terms of the actors (at various levels) as well as mechanisms and activities. Significantly, OPS is linked to other OWL ontologies as an upper ontology and via FOAF and BFO as higher upper ontologies, which yields sound organization and access of knowledge and data. In order to illustrate the usefulness of OPS, we present results on ontological expansion and integration with other ontologies and data. Ongoing work involves further adoption of OPS by the official Brazilian federal portal for social participation and NGO s, and further linkage to other ontologies for social participation.

cs.CY↗

arXiv2017

Temporal stability in human interaction networks

This paper reports on stable (or invariant) properties of human interaction networks, with benchmarks derived from public email lists. Activity, recognized through messages sent, along time and topology were observed in snapshots in a timeline, and at different scales. Our analysis shows that activity is practically the same for all networks across timescales ranging from seconds to months. The principal components of the participants in the topological metrics space remain practically unchanged as different sets of messages are considered. The activity of participants follows the expected scale-free trace, thus yielding the hub, intermediary and peripheral classes of vertices by comparison against the Erdös-Rényi model. The relative sizes of these three sectors are essentially the same for all email lists and the same along time. Typically, $<15\%$ of the vertices are hubs, 15-45\% are intermediary and $>45\%$ are peripheral vertices. Similar results for the distribution of participants in the three sectors and for the relative importance of the topological metrics were obtained for 12 additional networks from Facebook, Twitter and ParticipaBR. These properties are consistent with the literature and may be general for human interaction networks, which has important implications for establishing a typology of participants based on quantitative criteria.

cs.SI↗

arXiv2017

Enhancements of linked data expressiveness for ontologies

The semantic web has received many contributions of researchers as ontologies which, in this context, i.e. within RDF linked data, are formalized conceptualizations that might use different protocols, such as RDFS, OWL DL and OWL FULL. In this article, we describe new expressive techniques which were found necessary after elaborating dozens of OWL ontologies for the scientific academy, the State and the civil society. They consist in: 1) stating possible uses a property might have without incurring into axioms or restrictions; 2) assigning a level of priority for an element (class, property, triple); 3) correct depiction in diagrams of relations between classes, between individuals which are imperative, and between individuals which are optional; 4) a convenient association between OWL classes and SKOS concepts. We propose specific rules to accomplish these enhancements and exemplify both its use and the difficulties that arise because these techniques are currently not established as standards to the ontology designer.

cs.AI↗

arXiv2017

Audiovisual Analytics Vocabulary and Ontology (AAVO): initial core and example expansion

Visual Analytics might be defined as data mining assisted by interactive visual interfaces. The field has been receiving prominent consideration by researchers, developers and the industry. The literature, however, is complex because it involves multiple fields of knowledge and is considerably recent. In this article we describe an initial tentative organization of the knowledge in the field as an OWL ontology and a SKOS vocabulary. This effort might be useful in many ways that include conceptual considerations and software implementations. Within the results and discussions, we expose a core and an example expansion of the conceptualization, and incorporate design issues that enhance the expressive power of the abstraction.

cs.CY↗

arXiv2017

The Algorithmic-Autoregulation (AA) Methodology and Software: a collective focus on self-transparency

There are numerous efforts to achieve a lightweight and systematic account of what is done by a group and its individuals. The Algorithmic-Autoregulation (AA) is a special case, in which a technical community embraced the challenge of registering their own dedication for sharing processes, self-transparency, and documenting the efforts. AA is used since June/2011 by dozens of researchers and software developers, with the support of different software gadgets and for distinct tasks. This article describes these implementations and statistics of their usage including expected natural properties and ontological formalisms which eases comparative analysis and furthers integration.

cs.CY↗

arXiv2017

Musical elements in the discrete-time representation of sound

The representation of basic elements of music in terms of discrete audio signals is often used in software for musical creation and design. Nevertheless, there is no unified approach that relates these elements to the discrete samples of digitized sound. In this article, each musical element is related by equations and algorithms to the discrete-time samples of sounds, and each of these relations are implemented in scripts within a software toolbox, referred to as MASS (Music and Audio in Sample Sequences). The fundamental element, the musical note with duration, volume, pitch and timbre, is related quantitatively to characteristics of the digital signal. Internal variations of a note, such as tremolos, vibratos and spectral fluctuations, are also considered, which enables the synthesis of notes inspired by real instruments and new sonorities. With this representation of notes, resources are provided for the generation of higher scale musical structures, such as rhythmic meter, pitch intervals and cycles. This framework enables precise and trustful scientific experiments, data sonification and is useful for education and art. The efficacy of MASS is confirmed by the synthesis of small musical pieces using basic notes, elaborated notes and notes in music, which reflects the organization of the toolbox and thus of this article. It is possible to synthesize whole albums through collage of the scripts and settings specified by the user. With the open source paradigm, the toolbox can be promptly scrutinized, expanded in co-authorship processes and used with freedom by musicians, engineers and other interested parties. In fact, MASS has already been employed for diverse purposes which include music production, artistic presentations, psychoacoustic experiments and computer language diffusion where the appeal of audiovisual artifacts is exploited for education.

cs.SD↗

arXiv2017

Text Mining Descriptions Of Dreams: aesthetic and clinical efforts

Dreams are highly valued in both Freudian psychoanalysis and less conservative clinical traditions. Text mining enables the extraction of meaning from writings in powerful and unexpected ways. In this work, we report methods, uses and results obtained by mining descriptions of dreams. The texts were collected as part of a course in Schizoanalysis (Clinical Psychology) from dozens of participants. They were subsequently mined using various techniques for the achievement of poems and summaries, which were then used in clinical sessions by means of music and declamation. The results were found aesthetically appealing and effective to engage the audience. The expansion of the corpus, mining methods and strategies for using the derivatives for art and therapy are considered for future work.

cs.CY↗

arXiv2017

Egalitarian aspects of scale-free networks

Scale-free networks are frequently described as the zenith of inequality and sometimes even pin-pointed as a natural cause of concentrations, including accumulation of resources in human society. Although coherent with theory and empirical data, there are at least three aspects of scale-free networks that are egalitarian. Using the social network metaphor (which is easier to grasp): 1) the presence of each agent (vertex or component) in diverse networks, while each agent has the same amount of resources (e.g. time) for engaging (establishing links or edges) with other individual agents, ideas or objects; 2) the constant change in the concentration of resources (in this case, links) of each agent; 3) the uniform distribution of resources with respect to the amount of resources per agent (the more resources per agent, the fewer the agents). We also consider the importance of vertices that are not hubs and overstatements on the importance of the hubs. The conclusions suggest the urge of research to better examine and model the relevance of the vertices that are not hubs (i.e. peripheral and intermediary) and verify the need to better weight the emphasis current literature places in the association of inequality to the scale-free networks (and other phenomena in which power laws are found).

physics.soc-ph↗

arXiv2017

A Simple Text Analytics Model To Assist Literary Criticism: comparative approach and example on James Joyce against Shakespeare and the Bible

Literary analysis, criticism or studies is a largely valued field with dedicated journals and researchers which remains mostly within the humanities scope. Text analytics is the computer-aided process of deriving information from texts. In this article we describe a simple and generic model for performing literary analysis using text analytics. The method relies on statistical measures of: 1) token and sentence sizes and 2) Wordnet synset features. These measures are then used in Principal Component Analysis where the texts to be analyzed are observed against Shakespeare and the Bible, regarded as reference literature. The model is validated by analyzing selected works from James Joyce (1882-1941), one of the most important writers of the 20th century. We discuss the consistency of this approach, the reasons why we did not use other techniques (e.g. part-of-speech tagging) and the ways by which the analysis model might be adapted and enhanced.

cs.CL↗

arXiv2017

A Statistical Distance Derived From The Kolmogorov-Smirnov Test: specification, reference measures (benchmarks) and example uses

Statistical distances quantifies the difference between two statistical constructs. In this article, we describe reference values for a distance between samples derived from the Kolmogorov-Smirnov statistic $D_{F,F'}$. Each measure of the $D_{F,F'}$ is a measure of difference between two samples. This distance is normalized by the number of observations in each sample to yield the $c'=D_{F,F'}\sqrt{\frac{n n'}{n+n'}}$ statistic, for which high levels favor the rejection of the null hypothesis (that the samples are drawn from the same distribution). One great feature of $c'$ is that it inherits the robustness of $D_{F,F'}$ and is thus suitable for use in settings where the underlying distributions are not known. Benchmarks are obtained by comparing samples derived from standard distributions. The supplied example applications of the $c'$ statistic for the distinction of samples in real data enables further insights about the robustness and power of such statistical distance.

physics.data-an↗

arXiv2016

The Algorithmic Autoregulation Software Development Methodology

We present a new self-regulating methodology for coordinating distributed team work called Algorithmic Autoregulation (AA), based on recent social networking concepts and individual merit. Team members take on an egalitarian role, and stay voluntarily logged into so-called AA sessions for part of their time (e.g. 2 hours per day), during which they create periodical logs - short text sentences - they wish to share about their activity with the team. These logs are publicly aggregated in a website and are peer-validated after the end of a session, as in code review. A short screencast is ideally recorded at the end of each session to make AA logs more understandable. This methodology has shown to be well-suited for increasing the efficiency of distributed teams working on Global Software Development (GSD), as observed in our reported experience in actual real-world situations. This efficiency boost is mainly achieved through 1) built-in asynchronous on-demand communication in conjunction with documentation of work, products, and processes, and 2) reduced need for central management, meetings or time-consuming reports. Hence, the AA methodology legitimizes and facilitates the activities of a distributed software team. It thus enables other entities to have a solid means to fund these activities, allowing for new and concrete business models to emerge for very distributed software development. AA has been proposed, at its core, as a way of sustaining self-replicating hacker initiatives. These claims are discussed in a real case-study of running a distributed free software hacker team called Lab Macambira.

cs.SE↗

arXiv2015

Ensaio sobre o Auto-Aproveitamento: um relato de investidas naturais na participação social

The use of digital traces of our social structures and activities is a reality for some companies and State instances. The exploitation by the individual and by Society is still incipient. This writing is a brief account of an immersion to advance this civil empowerment, beginning with experiments for collection and dissemination of information, and going through social structures streaming, resource recommendation via complex networks and natural language processing, linked data and ontological organizations of social and participatory structures. Keywords: complex networks, natural language processing, linked data, social participation, anthropological physics

physics.soc-ph↗

arXiv2015

Continuous voting by approval and participation

In finding the adequate way to prioritize proposals, the Brazilian participation community agreed about the measurement of two indexes, one of approval and one of participation. Both practice and literature is constantly handled by the experts involved, and the formalization of such model and metrics seems novel. Also, the relevance of this report is strengthened by the nearby use of these indexes by the Brazilian General Secretariat of the Republic to raise and prioritize proposals about public health care in open processes.

cs.CY↗

arXiv2014

A connective differentiation of textual production in interaction networks

This paper explores textual production in interaction networks, with special emphasis on its relation to topological measures. Four email lists were selected, in which measures were taken from the texts participants wrote. Peripheral, intermediary and hub sectors of these networks were observed to have discrepant linguistic elaborations. For completeness of exposition, correlation of textual and topological measures were observed for the entire network and for each connective sector. The formation of principal components is used for further insights of how measures are related.

cs.SI↗

arXiv2014

Versinus: a visualization method for graphs in evolution

This article presents a novel visualization approach for dynamic graphs, the versinus method, specially useful for real world networks exhibiting free-scale properties. With a simple and fixed layout, and a small set of visual markups, the method has been useful for understanding network dynamics. Local community often suggests that it be reported, which motivated this article. Online resources deliver videos and computer scripts for rendering new animations. This article has a concise description of the method.

cs.SI↗