تحليل احساس در رسانه‌هاي اجتماعي فارسي با رويکرد شبکه عصبي پيچشي
الموضوعات :
مرتضي روحانيان
1
,
مصطفي صالحي
2
,
علي درزي
3
,
وحید رنجبر
4
1 - دانشگاه تهران
2 - دانشگاه تهران
3 - دانشگاه تهران
4 - مهندسی کامپیوتر
الکلمات المفتاحية: تحليل احساسرسانه‌هاي اجتماعيشبکه عصبي پيچشيشدت نظراتمتون کوتاه,
ملخص المقالة :
افزايش کاربري شهروندان از رسانه‌هاي اجتماعي (مانند توئيتر، فروشگاه‌هاي برخط و غيره) آنها را به منبعي عظيم براي تحليل و درک پديده‌هاي گوناگون تبديل کرده است. هدف تحليل احساس استفاده از داده‌هاي به دست آمده از اين رسانه‌ها و کشف گرايش‌هاي پيدا و پنهان کاربران نسبت به موجوديت‌هاي خاص حاضر در متن است. در کار حاضر ما با استفاده از شبکه عصبي پيچشي که نوعي شبکه عصبي پيش‌خور است، به تحليل گرايش نظرات در رسانه‌هاي اجتماعي در دو و پنج سطح و با در نظر گرفتن شدت آنها مي‌پردازيم. در اين شبکه عمل کانولوشن با استفاده از صافي‌هايي با اندازه‌هاي مختلف بر روي بردارهاي جملات ورودي اعمال مي‌شود و بردار ويژگي حاصل به عنوان ورودي لايه نرم بيشينه براي دسته‌بندي نهايي جملات به کار مي‌رود. شبکه‌هاي عصبي پيچشي با پارامترهاي مختلف با استفاده از معيار مساحت زير منحني و بر روي مجموعه داده جمع‌آوري شده از رسانه‌هاي اجتماعي فارسي ارزيابي شدند و نتايج به دست آمده نشان‌دهنده بهبود کارايي آنها در گستره رسانه‌هاي اجتماعي نسبت به روش‌هاي سنتي يادگيري ماشين به خصوص بر روي داده‌ها با طول کوتاه‌تر هستند.
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