Software project defect prediction (SDP) can predict the bug probability of software by their features and allocate their testing efforts. The existing software defect prediction methods can be divided into two categories: methods based on traditional handcrafted features and methods based on automatically made abstract features, especially those made by deep learning. The current research indicates

Engineers face significant challenges in developing cyber-physical systems (CPS) due to their heterogeneous nature, i.e. the need for knowledge and skills from a wide range of academic and industrial disciplines, the integration of the artifacts of these disciplines and fields, and the difficulty of maintaining such heterogeneous artifacts should be taken into account. The development of CPS mostly

Robots are becoming interactive and robust enough to be adopted outside laboratories and in industrial scenarios as well as interacting with humans in social activities. However, the design of engaging robot-based applications requires the availability of usable, flexible and accessible development frameworks, which can be adopted and mastered by researchers and practitioners in social sciences and

Model transformations (MT) are a significant element of model-based and model-driven engineering approaches. Hence their quality is important for their effectiveness for use in such developments. The concept of technical debt (TD) estimates the impact of quality flaws on the maintenance costs of software artefacts. In this paper we define a quality model for model transformation languages, and define

The mandala thangka, as a religious art in Tibetan Buddhism, is an invaluable cultural and artistic heritage. However, drawing a mandala pattern of thangka style is both time- and effort-consuming and requires mastery due to intricate details. Retaining and digitizing this heritage is an unresolved research challenge to date. In this paper, we propose a parametric approach to model and generate mandala

Software systems produce long sequences of call graphs, in particular, if the graphs are generated during runtime and not revision by revision. Visualizing, analyzing, and interacting with such long dynamic graphs with respect to different properties is a challenging task. In this article we describe an interactive visualization technique for dynamic call graphs that supports the observation of the

Visual data stories have been shown to significantly aid the comprehension and short-term memorability of statistical facts and value messages. Hence, they are a promising medium for communicating complex information to a target audience, fulfilling the communicative goal of information visualisation. However, creating visual data stories often requires a plethora of tools to execute the visual data

Software modeling is considered as the high-level design technique for describing abstract statements about software systems. While some practitioners create models for the early analysis of their design decisions and generating code from their models, some practitioners create models for the eased communication among stakeholders. There also exist practitioners who ignore modeling and directly proceed

The Internet is constantly evolving and changing over time. Outages, attacks, upgrades, censorships, and policy changes modify the routing very frequently everywhere in the world. To give the possibility to the Internet Service Providers and to the network operators of monitoring such an evolving scenario, many organizations collect information on the routing changes and give free access to them. We

Although today’s software systems are distributed by necessity, their design verification and validation is still an open issue due to their ever-increasing complexity. This paper proposes a stepwise development method allowing a designer to build correct-by-construction distributed systems. System correctness is handled w.r.t.a realizability property. We assume a top-down approach where systems are

During the last decade, we are witnessing the advent of a proliferation of techniques and associated tools for automatic program repair (APR). The current techniques and tools provide rich sources of knowledge that should be taken into consideration for future research. An overview of the current APR techniques and tools can serve the research community as a knowledge accumulator. However, APR techniques

Erlang is a programming language which brings together the features of functional programming and actor-based concurrency. Although it is a dynamically-typed language, there exists a tool (Dialyzer) that analyses Erlang programs in order to detect type discrepancies at compile-time. This tool is based on the notion of success types, which are overapproximations to the actual semantics of expressions

We present BiDaML 2.0, an integrated suite of visual languages and supporting tool to help multidisciplinary teams with the design of big data analytics solutions. BiDaML tool support provides a platform for efficiently producing BiDaML diagrams and facilitating their design, creation, report and code generation. We evaluated BiDaML using two types of evaluations, a theoretical analysis using the “physics

Generalised parsing has become increasingly important in the context of software language design and several compiler generators and language workbenches have adopted generalised parsing algorithms such as GLR and GLL. The original GLL parsing algorithms are described in low-level pseudo-code as the output of a parser generator. This paper explains GLL parsing differently, defining the FUN-GLL algorithm

Geovisualization of attribute uncertainty helps users to recognize underlying processes of spatial data. However, it still lacks an availability of uncertainty visualization tools in a standard GIS environment. This paper proposes a framework for attribute uncertainty visualization by extending bivariate mapping techniques. Specifically, this framework utilizes two cartographic techniques, choropleth

Branching tubular structures are prevalent in many different organic and synthetic settings. From trees and vegetation in nature, to vascular structures throughout human and animal biology, these structures are always candidates for new methods of graphical and visual expression. We present a modeling tool for the creation and interactive modification of these structures. Parameters such as thickness