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2019 International Multidisciplinary Information Technology and Engineering Conference, IMITEC 2019

作者： Abbott, Simon G Ade-Ibijola, Abejide Formal Structures Algorithms and Industrial Applications Research Cluster School of Consumer Intelligence and Information Systems University of Johannesburg Department of Applied Information Systems South Africa

ISBN: (纸本)9781728100401

The use of medical surveillance and predictive analysis is now more readily available through the intelligent use of modern technology with the use of software tools. Google Trends (GT) is an internet research tool initially utilised for the surveillance of the occurrence of influenza (Flu) internet search trends. Within the last 20 years the internet has become integral to health surveillance by reducing the time to the actual recognition of a disease outbreak, or the detection of a disease trend. GT primarily focused on detecting an outbreak of various strains of the Flu infecting different regions, sporadically or endemically, by monitoring the internet user seeking such medical information. It is currently utilised as an adjunct to the traditional surveillance tools used in traditional modern medicine. In this paper we have attempted to apply such search criteria using GT within a typical healthcare scenario or disease trend. We focused on the most common diseases found within the South African healthcare environment and presented the results accordingly. The results were found to be aligned to the results of traditional medical surveillance tools. The GT results presented in this paper may have similar applications in other areas of medicine and disease monitoring efforts in South Africa whereby the general population can derive meaningful insights of such disease trends. In addition there is a distinct awareness of this research tool, where many users are utilising the tool for healthcare searches which is becoming more evident in the medical literature. © 2019 IEEE.

关键词： Search engines

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A Metric for Estimating the Difficulty of Programming Problems by Ranking the Constructs in their Solutions

A Metric for Estimating the Difficulty of Programming Proble...

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2019 International Multidisciplinary Information Technology and Engineering Conference, IMITEC 2019

作者： Kalemba, Elsa Ade-Ibijola, Abejide Formal Structures Algorithms and Industrial Applications Research Cluster School of Consumer Intelligence and Information Systems University of Johannesburg Department of Applied Information Systems Johannesburg South Africa

ISBN: (纸本)9781728100401

Several studies have been conducted on the complexity of computer programs. Metrics of quantifying computer programs based on programming language, lines of code, or number of modules have been studied. One open problem is: how to measure the complexity of computer programming problems, based on the constructs in their solutions. In this paper, we present a tool called NOPCE (The NOvice Program Complexity Estimator) that measures the complexity of programming problems based on the constructs they contain. NOPCE takes any given novice program written in C# and computes an aggregated weight based on a look-up table of predefined weights for programming constructs. We have presented an evaluation that compares the human perception of problem complexity with that of NOPCE. Results show that, humans agreed with NOPCE on problem ranking, most of the time. This tool may find applications in computer education, where difficulty balancing of programming problems is paramount. © 2019 IEEE.

关键词： Table lookup

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Lecturer's Apprentice: A Chatbot for Assisting Novice Programmers

Lecturer's Apprentice: A Chatbot for Assisting Novice Progra...

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2019 International Multidisciplinary Information Technology and Engineering Conference, IMITEC 2019

作者： Ismail, Mohammed Ade-Ibijola, Abejide Formal Structures Algorithms and Industrial Applications Research Cluster School of Consumer Intelligence and Information Systems University of Johannesburg Department of Applied Information Systems Johannesburg South Africa

ISBN: (纸本)9781728100401

Students often struggle to communicate with their peers or lecturers about some of the issues they face during their time at university, either it be academic or personal. One of these issues is introductory programming, in instances were they choose to memorise code in order to pass rather than understanding how the logic behind the code actually works. Programming requires an understanding of how a certain logical flows and algorithm work. In this article, we discuss the difficulties that students face in introductory programming. We have also developed an interactive AI chatbot tool that students can interact with on some of the academic issues they may face. They can ask for advice on how to understand algorithms and what measures to take in order to understand programming logic and visualise metal models of the algorithms. The chatbot can also be used for personal advice. A survey that was conducted showed that there is a need for such a tool in aiding students through their university life. © 2019 IEEE.

关键词： Students

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Automatic Slicing and Comprehension of CVs

Automatic Slicing and Comprehension of CVs

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International Conference on Soft Computing and Machine Intelligence (ISCMI)

作者： Martin Cronje Abejide Ade-Ibijola Formal Structures Algorithms and Industrial Applications Research Cluster University of Johannesburg South Africa

ISBN: (纸本)9781728113029;9781728113012

Automatic comprehension of Curriculum Vitæs (CVs) is an Expert Task in Artificial Intelligence. This involves using algorithms to read and understand CVs for the purpose of extracting needed information from them. Performing a similar task on computer programs is known as Program Analysis (which involves program slicing, and semantic analysis). In this paper we have attempted to automatically comprehend CVs by analysing them like computer programs; i.e. slicing them into sections, and performing semantic analysis on contained sections, using a set of rules. We focused on textual CVs with formatting styles. We have presented the criteria used by our slicing algorithm and enclosed preliminary results of a prototype software tool that takes a CV and determines its sections. The algorithm and tool presented in this paper may find applications in automatic shortlisting of candidates, where large number of CVs are being considered.

关键词： Data mining Prototypes Semantics Software algorithms Databases XML Unified modeling language

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TalkSQL: A Tool for the Synthesis of SQL Queries from Verbal Specifications 2

TalkSQL: A Tool for the Synthesis of SQL Queries from Verbal...

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2nd International Multidisciplinary Information Technology and Engineering Conference, IMITEC 2020

作者： Obaido, George Ade-Ibijola, Abejide Vadapalli, Hima School of Computer Science and Applied Mathematics University of the Witwatersrand Johannesburg South Africa Formal Structures Algorithms and Industrial Applications Research Cluster School of Consumer Intelligence and Information Systems University of Johannesburg Johannesburg South Africa

ISBN: (纸本)9781728195209

Recent advances in the field of Natural Language Processing (NLP) have led to many robust user interfaces (UIs) designed as intelligent tutoring systems (ITS) that help students learn, query and access data in relational databases. Such tools are generally referred to as Natural Language Interfaces to Databases (NLIDBs). Many of these UIs rely on voice or typewritten for further processing. research has shown that typewritten remains the preferred input method used by database UIs designers for querying relational databases due to its flexibility. Still, there is a dearth of tools that require voice-based inputs for querying relational databases. Despite the scarcity of these tools, many of them fail to provide a comprehensive feedback to a user. In this paper, we introduce a voice-based query system named TalkSQL that takes voice inputs from a user, converts these words into SQL queries and returns a feedback to the user. Automatic feedback generation is of immense importance. To achieve this, we have used regular expressions, a representation of regular languages for the recognition of the Create, Read, Update, Delete (CRUD) operations in SQL and automatically generate a feedback using pre-defined templates. A survey on 53 participants showed that 91.2% agreed that they were able to understand the CRUD command using TalkSQL. The expected contributions are in two-fold: this work may assist a special (e.g. visually impaired) learner to understand SQL queries, and show that a voice-based interface can assist users in understanding SQL queries. © 2020 IEEE.

关键词： Specifications

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Regex parser II: Teaching regular expression fundamentals via educational gaming 46th

Regex parser II: Teaching regular expression fundamentals vi...

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46th Annual Conference of the Southern African Computer Lecturers’ Association, SACLA 2017

作者： Rosenfeld, Ariel Ade-Ibijola, Abejide Ewert, Sigrid School of Computer Science and Applied Mathematics University of the Witwatersrand Johannesburg South Africa Formal Structures Algorithms and Industrial Applications Research Cluster Department of Applied Information Systems University of Johannesburg Auckland Park South Africa

ISBN: (纸本)9783319696690

We present an educational game that is expected to improve the teaching of and stimulate the interest in regular expressions. The game generates regular expressions using pseudo-random numbers and predefined templates and asks the player to provide strings that are in the language corresponding to the given regular expression while a timer counts down. Points in the game are awarded on how many strings the player was able to enter before time runs out (The game, which requires the JRE, is available via http://***/RegexParserII). © Springer International Publishing AG 2017.

关键词： Computer games

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Syntactic Generation of Memorable Passwords

Syntactic Generation of Memorable Passwords

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2019 International Multidisciplinary Information Technology and Engineering Conference, IMITEC 2019

作者： Ade-Ibijola, Abejide Ogbuokiri, Blessing Formal Structures Algorithms and Industrial Applications Research Cluster School of Consumer Intelligence and Information Systems University of Johannesburg Johannesburg South Africa School of Computer Science and Applied Mathematics University of the Witwatersrand Johannesburg South Africa

ISBN: (纸本)9781728100401

Most tools for generating alphanumeric passwords often combine string tokens without considering semantics, as semantics contribute to the remembrance of a password string. We propose a formal method for the generation of passwords with semantic annotations using context-free grammars. A context-free grammar is a system with which one can make an infinite set of strings or objects. Users are allowed to specify their interests (such as music, movie, etc.) and phrases from these interests are used, in combination with at most three digits and one special character, to generate memorable passwords. This idea is implemented in a software tool called PassGen. PassGen takes, as input user interests, and generate n passwords for the user to choose from. 20,000 samples of generated passwords can be found at https://***/SyntacticPassword2018. A Survey of twenty seven responses shows that eighteen respondents agree that a tool that generates memorable secure passwords suggestion for users to pick from will be useful, while fourteen respondents agree that some passwords we generated using context-free grammars are memorable. © 2019 IEEE.

关键词： Context free grammars

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Synthesis of regular expression problems and solutions

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International Journal of Computers and applications 2020年第8期42卷 748-764页

作者： Ade-Ibijola, Abejide Formal Structures Algorithms and Industrial Applications Research Cluster School of Consumer Intelligence and Information Systems University of Johannesburg Johannesburg South Africa

formal languages and automata (FLA) theory is perceived by many as one of the hardest topics to teach or learn at the undergraduate level, due to the abstract nature of its contents;often containing proofs, lots of symbolic notations, and specifications of abstract computing machines that are difficult for many students to relate with. One way of approaching this problem is to administer numerous practice problems to students to aid learning. In this paper, we present: definitions of formal rules (using context-free grammar notations) for the synthesis of practice problems and solutions in a sub-domain of formal language theory–regular expressions, new algorithms for implementing these rules with iterations of generated problem instances and associated solutions. Generated problems are then embedded in predefined, short text response and multiple-choice question templates. The implementation of this technique produced numerous problems and solutions that can be used as practice, test or examination questions to support the teaching of regular expressions as a topic in FLA at the undergraduate level. © 2018 Informa UK Limited, trading as Taylor & Francis Group.

关键词： Context free grammars

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Synthesis of Hypothetical Sociograms for Social Network Analysis

Synthesis of Hypothetical Sociograms for Social Network Anal...

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International Conference on Soft Computing and Machine Intelligence (ISCMI)

作者： Abejide Ade-Ibijola Formal Structures Algorithms and Industrial Applications Research Cluster Department of Applied Information Systems University of Johannesburg South Africa

ISBN: (纸本)9781728113029;9781728113012

Sociograms (or Social Network Graphs) have evolved to be insightful tools. These are graphs that depict social relationships amongst individual entities or organisations. Inferences (such as media influence, information transmission, behavioural change, and evolution of interactions across geographical regions) can be made from Sociograms. However, there are privacy concerns around using real life social media profiles to generate graphs for analytics in practice/illustration sessions. In this paper, we present an algorithm for the automatic generation of hypothetical Sociograms. This algorithm generates random hypothetical names as vertices, and random relationships between them as directed edges. Each generated graph is rendered graphically using the Microsoft's Automatic Graph Layout API. Results showing 1,000 distinct synthesised social network graphs can be found at: ***/SynthesisedSociograms. These synthesised sociograms can be useful in describing hypothetical scenarios in instruction or planning sessions, where real-life data is not necessary.

关键词： Social networking (online) Tools Data visualization Graph theory Layout Inference algorithms Information systems

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algorithms and a Tool for Automatic Decryption of Clinical Notes

Algorithms and a Tool for Automatic Decryption of Clinical N...

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International Conference on Soft Computing and Machine Intelligence (ISCMI)

作者： Simon G Abbott Abejide Ade-Ibijola Formal Structures Algorithms and Industrial Applications Research Cluster School of Consumer Intelligence and Information Systems University of Johannesburg South Africa

ISBN: (数字)9781728145778

ISBN: (纸本)9781728145785

Natural Language Processing (NLP) presents a set of techniques that are finding applications in modern healthcare, for the extraction and generation text. Clinical notes are classically originated and derived from various sources of narratives such as reports, referral letters, discharge notes and clinical summaries. In this paper, we present algorithms and a tool for enabling each member of a medical team to read and understand each others medical notes, using NLP techniques. We refer to this process as the decryption, or the deciphering, of complex clinical notes into simple readable language. We have presented a tool called the Clinical Note Translator (CNT). Based on the replacement of technical terms in clinical notes, CNT translates these notes to plain text. This solution is expected to assist multidisciplinary medical teams in understanding peer-to-peer expert notes.

关键词： Medical diagnostic imaging Medical services Encoding Data mining Dictionaries Tools

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