Nitesh Goyal
Research Areas
Authored Publications
Sort By
Discovering Datasets on the Web Scale: Challenges and Recommendations for Google Dataset Search
Daniel Russell
Tarfah Alrashed
Stella Dugall
Harvard Data Science Review(2024)
Preview abstract
With the rise of open data in the last two decades, more datasets are online and more people are using them for projects and research. But how do people find datasets? We present the first user study of Google Dataset Search, a dataset-discovery tool that uses a web crawl and open ecosystem to find datasets. Google Dataset Search contains a superset of the datasets in other dataset-discovery tools—a total of 45 million datasets from 13,000 sources. We found that the tool addresses a previously identified need: a search engine for datasets across the entire web, including datasets in other tools. However, the tool introduced new challenges due to its open approach: building a mental model of the tool, making sense of heterogeneous datasets, and learning how to search for datasets. We discuss recommendations for dataset-discovery tools and open research questions.
View details
Preview abstract
Online harassment is a major societal challenge that impacts multiple communities. Some members of community, like female journalists and activists, bear significantly higher impacts since their
profession requires easy accessibility, transparency about their identity, and involves highlighting stories of injustice. Through
a multi-phased qualitative research study involving a focus group
and interviews with 27 female journalists and activists, we mapped
the journey of a target who goes through harassment. We introduce
PMCR framework, as a way to focus on needs for Prevention, Monitoring, Crisis and Recovery. We focused on Crisis and Recovery, and
designed a tool to satisfy a target’s needs related to documenting
evidence of harassment during the crisis and creating reports that
could be shared with support networks for recovery. Finally, we
discuss users’ feedback to this tool, highlighting needs for targets as
they face the burden and offer recommendations to future designers
and scholars on how to develop tools that can help targets manage
their harassment.
View details
Preview abstract
Machine learning models are commonly used to detect toxicity in online conversations. These models are trained on datasets annotated by human raters. We explore how raters' self-described identities impact how they annotate toxicity in online comments. We first define the concept of specialized rater pools: rater pools formed based on raters' self-described identities, rather than at random. We formed three such rater pools for this study--specialized rater pools of raters from the U.S. who identify as African American, LGBTQ, and those who identify as neither. Each of these rater pools annotated the same set of comments, which contains many references to these identity groups. We found that rater identity is a statistically significant factor in how raters will annotate toxicity for identity-related annotations. Using preliminary content analysis, we examined the comments with the most disagreement between rater pools and found nuanced differences in the toxicity annotations. Next, we trained models on the annotations from each of the different rater pools, and compared the scores of these models on comments from several test sets. Finally, we discuss how using raters that self-identify with the subjects of comments can create more inclusive machine learning models, and provide more nuanced ratings than those by random raters.
View details
Capturing Covertly Toxic Speech via Crowdsourcing
Alyssa Whitlock Lees
Daniel Borkan
Ian Kivlichan
Jorge M Nario
HCI, https://sites.google.com/corp/view/hciandnlp/home(2021) (to appear)
Preview abstract
We study the task of extracting covert or veiled toxicity labels from user comments. Prior research has highlighted the difficulty in creating language models that recognize nuanced toxicity such as microaggressions. Our investigations further underscore the difficulty in parsing such labels reliably from raters via crowdsourcing. We introduce an initial dataset, COVERTTOXICITY, which aims to identify such comments from a refined rater template, with rater associated categories. Finally, we fine-tune a comment-domain BERT model to classify covertly offensive comments and compare against existing baselines.
View details
Designing for Mobile Experience Beyond the Native Ad Click: Exploring Landing Page Presentation Style & Media Usage
Marc Bron
Mounia Lalmas
Andrew Haines
Henriette Cramer
Journal of the Association for Information Science and Technology(2018)
Preview abstract
Many free mobile applications are supported by advertising. Ads can greatly affect user perceptions and behavior. In mobile apps, ads often follow a “native” format: they are designed to conform in both format and style to the actual content and context of the application. Clicking on the ad leads users to a second destination, outside of the hosting app, where the unified experience provided by native ads within the app is not necessarily reflected by the landing page the user arrives at. Little is known about whether and how this type of mobile ads is impacting user experience. In this paper, we use both quantitative and qualitative methods to study the impact of two design decisions for the landing page of a native ad on the user experience: (i) native ad style (following the style of the application) versus a non-native ad style; and (ii) pages with multimedia versus static pages. We found consider-able variability in terms of user experience with mobile ad landing pages when varying presentation style and multimedia usage, especially interaction between presence of video and ad style (native or non-native). W e also discuss insights and recommendations for improving the user experience with mobile native ads.
View details
