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Periodical
Journal of Open Archaeology Data
ISSN: 20491565

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Periodical
Data in brief.
Year: 2014 Publisher: [Amsterdam] : Elsevier B.V.,

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Book
Data science for neuroimaging : an introduction
Authors: ---
ISBN: 9780691222752 9780691222738 0691222738 0691222754 Year: 2024 Publisher: Princeton: Princeton university press,

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"Like many other research fields, over the last two decades neuroscience has turned towards data-driven discovery, a change which has dramatically reshaped the field. Through large collaborative projects and concerted data collection and data sharing efforts, the field is gaining access to large and heterogeneous data sets, at scales that have never been possible before. While these data present tremendous opportunities, their effective management, storage, and analysis presents serious challenges for many researchers. The tools and techniques of data science - a field which draws on software engineering, statistics, and machine learning to increase the efficiency and reproducibility of data extraction and analysis - have much to offer neuroscientists, but unfortunately these concepts are not taught within the standard neuroscience curriculum. This book offers an introduction to contemporary data science and its application in neuroimaging research. Taking a "hands-on" approach, the book explains common methods and approaches in a reader-friendly style, and includes numerous applications to openly available neuroscience datasets, including extensive code examples in Python. In contrast to most other neuroimaging-focused books, which place heavy emphasis on the process of acquiring and statistically analyzing neuroimaging data, the focus of this book is on developing and managing scalable and reproducible data analysis pipelines, broadly relevant skills that will readily translate to students' own research questions. Throughout, there is an emphasis on best-practices in data sharing and reporting, including how to apply principles of fairness, accountability, and transparency in neuroscience applications."


Periodical
Data in Brief
ISSN: 23523409

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Periodical
IUCrData

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Book
Python 3 and Feature Engineering
Author:
ISBN: 1683929470 1683929489 Year: 2024 Publisher: Boston, MA : Mercury Learning & Information,

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This book is designed for data scientists, machine learning practitioners, and anyone with a foundational understanding of Python 3.x. In the evolving field of data science, the ability to manipulate and understand datasets is crucial. The book offers content for mastering these skills using Python 3. The book provides a fast-paced introduction to a wealth of feature engineering concepts, equipping readers with the knowledge needed to transform raw data into meaningful information. Inside, you’ll find a detailed exploration of various types of data, methodologies for outlier detection using Scikit-Learn, strategies for robust data cleaning, and the intricacies of data wrangling. The book further explores feature selection, detailing methods for handling imbalanced datasets, and gives a practical overview of feature engineering, including scaling and extraction techniques necessary for different machine learning algorithms. It concludes with a treatment of dimensionality reduction, where you’ll navigate through complex concepts like PCA and various reduction techniques, with an emphasis on the powerful Scikit-Learn framework.


Book
Big Data in cognitive science
Author:
ISBN: 9781138791923 113879192X 9781138791930 1138791938 Year: 2017 Publisher: London ; New York : Routledge, Taylor & Francis Group,

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"While laboratory research is the backbone of collecting experimental data in cognitive science, a rapidly increasing amount of research is now capitalizing on large-scale and real-world digital data. Each piece of data is a trace of human behavior and offers us a potential clue to understanding basic cognitive principles. However, we have to be able to put the pieces together in a reasonable way, which necessitates both advances in our theoretical models and development of new methodological techniques. The primary goal of this volume is to present cutting-edge examples of mining large-scale and naturalistic data to discover important principles of cognition and evaluate theories that would not be possible without such a scale. This book also has a mission to stimulate cognitive scientists to consider new ways to harness big data in order to enhance our understanding of fundamental cognitive processes. Finally, this book aims to warn of the potential pitfalls of using, or being over-reliant on, big data and to show how big data can work alongside traditional, rigorously gathered experimental data rather than simply supersede it. In sum, this volume presents cognitive scientists and those in related fields with a detailed, stimulating, and realistic introduction to big data - and to show how it may greatly advance our understanding of the principles of human memory, perception, categorization, decision-making, language, problem-solving, and representation."--Provided by publisher.


Periodical
Data in brief.
Year: 2014 Publisher: [Amsterdam] : Elsevier B.V.,

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Periodical
Data in brief.
Year: 2014 Publisher: [Amsterdam] : Elsevier B.V.,

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Dissertation
Predicting ratings of Amazon reviews - Techniques for imbalanced datasets
Authors: --- --- ---
Year: 2017 Publisher: Liège Université de Liège (ULiège)

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The goal of this dissertation is to successfully predict a user’s numerical rating from its review text content. To do so, supervised machine learning techniques and more specifically text classification are used.&#13;Three distinct approaches are presented, namely binary classification, aiming at predicting the rating of a review as low or high, as well as multi-class classification and logistic regression whose aim is to predict the exact value of the rating for each review. Moreover, three different classifiers (Naïve Bayes, Support Vector Machine and Random Forest) are trained and tested on two different datasets from Amazon. These datasets are divided into two major categories: experience and search products and are characterized by an imbalanced distribution. We overcome this issue by applying sampling techniques to even out the class distributions. Eventually, the performance of those classifiers is tested and assessed thanks to accuracy metrics, including precision, recall and f1-score. &#13;Our results show that the two most successful classifiers are Naïve Bayes and SVM, with a slight advantage for the latter one for both datasets. Binary classification shows quite good results while making more precise predictions (i.e. scale from 1 to 5) is significantly a harder task. Nevertheless, these results are still acceptable.&#13;More practically, our approach enables users’ feedbacks to be automatically expressed on a numerical scale and therefore to ease the consumer decision process prior to making a purchase. This can in turn be extended to various other situations where no numerical rating system is available, for instance comments on YouTube or Twitter.

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