200502 Applied NLP to Understand Creativity: Take Twitter and Kickstarter for Example

Title:
Applied NLP to Understand Creativity: Take Twitter and Kickstarter for Example

Speaker:
杜宥霖 (Mark Du), Research Assistant, National Taiwan University

Time:
05/02 (Sat.) 6:30 pm PDT, 7:30 pm MDT, 8:30 pm CDT, 9:30 pm EDT
05/03 (Sun.) 9:30 am Taiwan

Keywords:
Psychology, Creativity, Personality, Decision making, Risk evaluation, Consumer behavior, Natural language processing

Abstract:
本研究試圖以資料探勘的方式，分析社群網路以及群眾募資網站的語言，並且使用自然語言理解的工具去作分析。首先得出一個原始的數據，然後應用心理學的領域知識，對電腦軟體去做「逆向工程」，藉由理解電腦程式的運作原理，去類推人類的心智隱藏的運作模式，最後用數學原理，提出一個資料科學的理論，並且最後解釋一些行為經濟學的理論與現象。

200425 ANNOgesic: The Swiss Army Knife for RNA-Seq Based Annotation of Bacterial/Archaeal Genomes

Title:
ANNOgesic: The Swiss Army Knife for RNA-Seq Based Annotation of Bacterial/Archaeal Genomes

Speaker:
于松桓 (Sung-Huan Yu), PhD, Max Planck Institute of Biochemistry

Time:
04/25 (Sat.) 1 pm PDT, 2 pm MDT, 3 pm CDT, 4 pm EDT
04/26 (Sun.) 4 am Taiwan

Keywords:
Biology, Informatics, Bioinformatics, Microbiology, RNA-Seq, Genome annotation, Non-coding RNA, Machine learning

Abstract:
To understand the gene regulation of an organism of interest, a comprehensive genome annotation is essential. While some features, such as coding sequences, can be computationally predicted with high accuracy based purely on the genomic sequence, others, such as promoter elements or noncoding RNAs, are harder to detect. RNA sequencing (RNA-seq) has proven to be an efficient method to identify these genomic features and to improve genome annotations. However, processing and integrating RNA-seq data in order to generate high-resolution annotations is challenging, time consuming, and requires numerous steps. We have constructed a powerful and modular tool called ANNOgesic that provides the required analyses and simplifies RNA-seq-based bacterial and archaeal genome annotation. It can integrate data from conventional RNA-seq and differential RNA-seq and predicts and annotates numerous features, including small noncoding RNAs, with high precision. The software is available under an open source license (ISCL) at https://pypi.org/project/ANNOgesic/.

200418 Using Perceptual Tomography in Network Construction and Assessing Network Interventions

Title:
Using Perceptual Tomography in Network Construction and Assessing Network Interventions

Speaker:
李宣緯 (Hsuan-Wei Wayne Lee), PhD, Academia Sinica

Time:
04/18 (Sat.) 7 pm PDT, 8 pm MDT, 9 pm CDT, 10 pm EDT
04/19 (Sun.) 10 am Taiwan

Keywords:
Sociology, Social networks, Computational sociology, Network construction, Signed network, Network intervention

Abstract:
There are two main parts of this talk. In the first part, we introduce a new method for acquiring and interpreting data on cognitive (or perceptual) networks. We refer to the method as perceptual tomography, it aggregates multiple 3rd-party data on the perceived presence or absence of individual properties and pairwise relationships. Key features of the method include its low respondent burden, flexible interpretation, as well as its ability to find robust intransitive ties in the form of perceived non-edges. In the second part, a new prevention evaluation method is presented to disentangle the social influences assumed to influence prevention effects within communities. We formally introduce the method and its utility for a suicide prevention program implemented in several Alaska Native villages. The results show promise to explore eight sociological measures of intervention effects in the face of social diffusion, social reinforcement, and direct treatment. Policy and research implications are discussed.

200411 Single-Photon Emission From Single-Electron Transport in a Saw-Driven Lateral Light-Emitting Diode

Title:
Single-Photon Emission From Single-Electron Transport in a Saw-Driven Lateral Light-Emitting Diode

Speaker:
蕭子綱 (Tzu-Kan Hsiao), PhD, Delft University of Technology

Time:
04/11 (Sat.) 11 am PDT, 12 pm MDT, 1 pm CDT, 2 pm EDT
04/12 (Sun.) 2 am Taiwan

Keywords:
Physics, Quantum information, Quantum communication, Semiconductor physics, Surface acoustic wave

Abstract:
The long-distance quantum transfer between electron-spin qubits in semiconductors is important for realising large-scale quantum computing circuits. Electron-spin to photon-polarisation conversion is a promising technology for achieving free-space or fibre-coupled quantum transfer. In this work, using only regular lithography techniques on a conventional 15 nm GaAs quantum well, we demonstrate acoustically-driven generation of single photons from single electrons, without the need for a self-assembled quantum dot. In this device, a single electron is carried in a potential minimum of a surface acoustic wave (SAW) and is transported to a region of holes to form an exciton. The exciton then decays and creates a single optical photon within 100 ps. Our work marks the first step towards electron-to-photon (spin-to-polarisation) qubit conversion for scalable quantum computing architectures.