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دادگان PCoQA: Persian Conversational Question Answering

دادگان (دیتاست) جدیدی به نام PCoQA منتشر شده که شامل ۹۰۲۶ پرسش از ۸۷۰ صفحه ویکی‌پدیاست. هر گفتمان (conversation) روی یک صفحه ویکی‌پدیا انجام شده و طول هر گفتمان هم حدودا ۱۰ است. به منظور ارزیابی انسانی شبیه دادگان‌های گذشته مثل SQuAD و CoQA، برای هر پرسش در مجموعه‌ی ارزیابی و تست چندین پاسخ دراومده و دقت F1 انسان‌ها و چندین مدل بر روی پاسخ‌دهی به این پرسش‌ها بدست اومده که برای انسان حدودا ۸۶ درصده.

دو نوع مدل روی این داده تست شده. یکی با فقط فاین‌تیون کردن چند مدل زبانی ترنسفورمری روی همین دادگان و یک مدل دیگه هم با فاین‌تیون کردن مدل روی دادگان قبلی QA و بعد فاین تیون روی این دادگان و بعد تست گرفتن.

دو خصوصیت مهم این دیتاست:
- پرسش‌های این دادگان بیشتر open ended هستند، بر خلاف قبلی‌ها مثل CoQA و SQuAD که بیشتر به شکلی مصنوعی‌ بر روی named entity و noun phrase متمرکزند.
- سعی شده lexical overlap تا حد امکان کاهش داده بشه تا کیفیت بالاتر بیاد.

لینک مقاله:
arxiv.org/abs/2312.04362

لینک گیت‌هاب:
github.com/HamedHematian/PCoQA

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Date: 2025-07-01| NLP stuff

Telegram auto-delete message, expiring invites, and more

elegram is updating its messaging app with options for auto-deleting messages, expiring invite links, and new unlimited groups, the company shared in a blog post. Much like Signal, Telegram received a burst of new users in the confusion over WhatsApp’s privacy policy and now the company is adopting features that were already part of its competitors’ apps, features which offer more security and privacy. Auto-deleting messages were already possible in Telegram’s encrypted Secret Chats, but this new update for iOS and Android adds the option to make messages disappear in any kind of chat. Auto-delete can be enabled inside of chats, and set to delete either 24 hours or seven days after messages are sent. Auto-delete won’t remove every message though; if a message was sent before the feature was turned on, it’ll stick around. Telegram’s competitors have had similar features: WhatsApp introduced a feature in 2020 and Signal has had disappearing messages since at least 2016.

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