title: Unsupervised concept drift detection using a student–teacher approach

authors: Cerqueira, Vitor

abstract: Concept drift detection is a crucial task in data stream evolving environments. Most of state of the art approaches designed to tackle this problem monitor the loss of predictive models. However, this approach falls short in many real-world scenarios, where the true labels are not readily available to compute the loss. In this context, there is increasing attention to approaches that perform concept drift detection in an unsupervised manner, i.e., without access to the true labels after the model is deployed. We propose a novel approach to unsupervised concept drift detection based on a student-teacher learning paradigm. Essentially, we create an auxiliary model (student) to mimic the primary model’s behaviour (teacher). At run-time, our approach is to use the teacher for predicting new instances and monitoring the mimicking loss of the student for concept drift detection. In a set of experiments using 19 data streams, we show that the proposed approach can detect concept drift and present a competitive behaviour relative to the state of the art approaches.

text: Unsupervised concept drift detection using a student–teacher approach Concept drift detection is a crucial task in data stream evolving environments. Most of state of the art approaches designed to tackle this problem monitor the loss of predictive models. However, this approach falls short in many real-world scenarios, where the true labels are not readily available to compute the loss. In this context, there is increasing attention to approaches that perform concept drift detection in an unsupervised manner, i.e., without access to the true labels after the model is deployed. We propose a novel approach to unsupervised concept drift detection based on a student-teacher learning paradigm. Essentially, we create an auxiliary model (student) to mimic the primary model’s behaviour (teacher). At run-time, our approach is to use the teacher for predicting new instances and monitoring the mimicking loss of the student for concept drift detection. In a set of experiments using 19 data streams, we show that the proposed approach can detect concept drift and present a competitive behaviour relative to the state of the art approaches.

year: 2022-01-01

title: Introducing Islam [Book Review]

authors: Drury, Abdullah

abstract: This article reviews the book “Introducing Islam”, by William Shepard.

text: Introducing Islam [Book Review] This article reviews the book “Introducing Islam”, by William Shepard.

year: 2013

title: A Portfolio of Compositions

authors: Dobson, Elizabeth Jane

subjects: music

abstract: The pieces in this portfolio cover a wide range of methods and styles - from work for a single vocalising percussionist, to singing bowl and electronics and a work for full orchestra. The aim of this portfolio is to demonstrate my technical and musical proficiency as well as to give an overview of my personal composing philosophy and style.
The portfolio opens with a work for orchestra, A Study in Scarlet. It differs from my previous orchestral works and is based on a musical code of Sir Arthur Conan Doyle's book, titled A Study in Scarlet. This was read in the 2009 Todd/ NSZO Young Composer Readings. The second work is .manatu.. It features tinkly piano, wind chimes and ethnic instrumentalists in a chamber ensemble to create a musical sound world. This was written for and premiered at Bang on a Can's summer music festival in Massachusetts 2009. The piano work .ātanga. is an adaptation of .manatu. for solo pianist and was written for the Dame Malvina Major Foundations Showcase Concert in New Plymouth. This adaptation proved to be a worthwhile exercise in efficient use of music material. Wrong Number is a Janet Frame poem set for soprano and real-time effect processing of audio. Confessions - Part I and II, for solo violin and string orchestra is based on the Fibonacci series and explores my love for string sonorities. Sand Song was written for a friend who asked me to set a poem she wrote. Here I demonstrate my love for setting text and voice to say something beautiful and precise. This song now stands as a eulogy for her Father. Parihaka, for vocalising percussionist, is a setting of Apirana Taylor's poem Parihaka and was written for Australian performer Louise Devenish. I explore further in the realm of live acoustic and electroacoustic music with Orison a piece I wrote for myself to perform live with singing bowl and Ableton Live. Finally The Headlines Today for five improvising musicians explores the music of shouting and the vernacular of place.

text: A Portfolio of Compositions The pieces in this portfolio cover a wide range of methods and styles - from work for a single vocalising percussionist, to singing bowl and electronics and a work for full orchestra. The aim of this portfolio is to demonstrate my technical and musical proficiency as well as to give an overview of my personal composing philosophy and style.
The portfolio opens with a work for orchestra, A Study in Scarlet. It differs from my previous orchestral works and is based on a musical code of Sir Arthur Conan Doyle's book, titled A Study in Scarlet. This was read in the 2009 Todd/ NSZO Young Composer Readings. The second work is .manatu.. It features tinkly piano, wind chimes and ethnic instrumentalists in a chamber ensemble to create a musical sound world. This was written for and premiered at Bang on a Can's summer music festival in Massachusetts 2009. The piano work .ātanga. is an adaptation of .manatu. for solo pianist and was written for the Dame Malvina Major Foundations Showcase Concert in New Plymouth. This adaptation proved to be a worthwhile exercise in efficient use of music material. Wrong Number is a Janet Frame poem set for soprano and real-time effect processing of audio. Confessions - Part I and II, for solo violin and string orchestra is based on the Fibonacci series and explores my love for string sonorities. Sand Song was written for a friend who asked me to set a poem she wrote. Here I demonstrate my love for setting text and voice to say something beautiful and precise. This song now stands as a eulogy for her Father. Parihaka, for vocalising percussionist, is a setting of Apirana Taylor's poem Parihaka and was written for Australian performer Louise Devenish. I explore further in the realm of live acoustic and electroacoustic music with Orison a piece I wrote for myself to perform live with singing bowl and Ableton Live. Finally The Headlines Today for five improvising musicians explores the music of shouting and the vernacular of place.

year: 2010