Hung Hoang-Viet Nguyen

PhD Student and researcher based in Bremen, Germany. Studying Political Methodology, NLP, Partisan Politics, and Public Opinion

[Hung Hoang-Viet Nguyen @HHVNguyen]

@MareikeZum Congratulations, Mareike!

[Hung Hoang-Viet Nguyen @HHVNguyen]

@ste_mueller @ucdpolitics Congratulations, Stefan!

[Hung Hoang-Viet Nguyen @HHVNguyen]

@BreznauNate

[Hung Hoang-Viet Nguyen @HHVNguyen]

Check out my pre-print titled "An Improved Framework for Scaling Party Positions from Texts using Transformer and Supervised Dimension Reduction". Here, I introduce ContextScale, an approach to scaling party positions from texts using Transformer and UMAP. https://t.co/Wj4lJYxqvS

[Hung Hoang-Viet Nguyen @HHVNguyen]

ContextScale can be extended to measure other types of political data with a high level of confidence. Here, using a model trained on CMP data, ContextScale can predict the labels of sentences coded by the COALITIONAGREE dataset up to 0.7.

[Hung Hoang-Viet Nguyen @HHVNguyen]

Another important feature of ContextScale is the use of UMAP for supervised dimension reduction instead of PCA. This allows ContextScale to produce party positions that are interpretable for downstream research. Read more on UMAP here: https://t.co/wwmjW5TYF0

[Hung Hoang-Viet Nguyen @HHVNguyen]

This is because Transformer's text representations can distinguish between different nuances of the same combinations of keywords, whereas frequency-based techniques like Wordfish or Wordscores only measure issue saliency and not actual sentence positions.

[Hung Hoang-Viet Nguyen @HHVNguyen]

Estimates produced by the new approach is consistently correlated with traditional sources of party positions when the issue is confrontational and introduce differences when the issue is non-confrontational.

[Hung Hoang-Viet Nguyen @HHVNguyen]

@BreznauNate Oh wow my GPU has 24GB of VRAM!

[Nate Breznau @BreznauNate]

I finally got around to creating a "multiverse analysis" page on @Wikipedia. Its very minimal thus far, so I hope others will improve it. @FORRTproject @meta_rep @OpenSciFellows #openscience

https://t.co/AAYp02H3hp

[Hung Hoang-Viet Nguyen @HHVNguyen]

@BreznauNate @RexDouglass Thanks for sharing!

[Hung Hoang-Viet Nguyen @HHVNguyen]

Hmm, I constantly asked about ChatGPT and its policy and now all my prompts are flagged for violation of content policy... 🤔

[Hung Hoang-Viet Nguyen @HHVNguyen]

Even ChatGPT itself doesn't know whether it belongs to OpenAI or HuggingFace! 🤣
By the way, does anyone know where HuggingFace published its open-sourced ChatGPT model? I can't seem to find it on the HF's database.
#ChatGPT #OpenAI #HuggingFace

[Eckler ✦ @daniel_eckler]

90 Days of Diffusion
90 🤯 AI Advances 👇

[Federico Bianchi @federicobianchy]

Text-to-image generation models (like Stable Diffusion and DALLE) are being used to generate millions of images a day.

We show that these models perpetuate and amplify dangerous stereotypes related to race, gender, crime, poverty, and more (https://t.co/Hl9r3KLjFx)

A thread🧵

[Nate Breznau @BreznauNate]

1/ We are grateful to the 162 participants who made this possible, and @HHVNguyen and @nordholmen for the help in creating fully reproducible research materials. https://t.co/JYz2ScDIk6

[Hung Hoang-Viet Nguyen @HHVNguyen]

Happy to be a part of this huge project. 😍

[Nate Breznau @BreznauNate]

𝗔 𝗛𝗶𝗱𝗱𝗲𝗻 𝗨𝗻𝗶𝘃𝗲𝗿𝘀𝗲 𝗼𝗳 𝗥𝗲𝘀𝗲𝗮𝗿𝗰𝗵𝗲𝗿 𝗨𝗻𝗰𝗲𝗿𝘁𝗮𝗶𝗻𝘁𝘆
• 73 teams tested same hypothesis w/ same data
• Outcomes varied widely, each workflow unique
• We attempt to explain outcomes from decisions, no easy answer
https://t.co/mnowFwYGSi

[Hung Hoang-Viet Nguyen @HHVNguyen]

@OscarKjell @BreznauNate @ian_t_adams @rstudio Looking forward to it! Thanks for your contribution to the community!

[Hung Hoang-Viet Nguyen @HHVNguyen]

@BreznauNate @ian_t_adams @rstudio Doesn't look like we can do much fine-tuning or model tweaking right now. What really missing from R is something like pytorch or tensorflow, which are massive libraries for machine/deep learning. Applying pre-trained BERT models are only tips of the iceberg, I think.

[Hung Hoang-Viet Nguyen @HHVNguyen]

@BreznauNate @ian_t_adams @rstudio Oh wow this is cool!