يمكن للمodels لغوية كبيرة استرجاع حقائق obscure من كل أنحاء العالم، ولكن كيف تتذكر هذه الكمية؟ يستكشف هذا المنشور الخرائط الخطية، MLP، والانتباه الذاتي كنوعين مختلفين من Stores الذاكرة.
الخاصية الرئيسية لذاكرة جيدة هي قدرتها على تذكر ما تخزنه. كلما زادت الذكريات التي نخزنها، زاد تداخلها عندما نحاول استرجاع واحدة. نسبة التداخل إلى الإشارة تقيس كم تتداخل الذكريات الأخرى عند محاولة استرجاع واحدة. عدد الذكريات التي يمكن للمخزن الاحتفاظ بها قبل أن تنمو التداخل كما تنمو الإشارة هو سعته. سنوضح كيف ننتقل من طبقة خطية إلى شيء أفضل، MLP، والذي يحسن كل من السعة والاسترجاع، ثم كله إلى الانتباه الذاتي، الذي لديه استرجاع ممتاز ويمكنه تخزين عدد غير محدود من الذكريات. مع مفاتيح بعدية 64،那是 قفزة من حوالي 64 ذكرى، إلى حوالي 2,700، إلى أكثر من مليون.
مخزن الذاكرة هو دالة f تحتفظ فيها M ذكرى، لـ i = 1, ..., M. كل ذكرى هي زوج مفتاح-قيمة: مفتاح k_i ∈ ℝ^{d_k}، يستخدم للاسترجاع بناءً على التشابه، وقيمة v_i ∈ ℝ^{d_v}، وهي ما نريد استرجاعه. لاستخدام f، نستفسر عنها بإدخال x، وتسترجع إخراج f(x). ذاكرة جيدة تسترجع v_i عندما نستفسر عنها بـ k_i، أو ب vecteur مشابه لـ k_i. في الأدبيات، ذاكرة تسترجع بواسطة التشابه تسمى ذاكرة جمعية. مخزن الذاكرة積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積積
المصدر: Hacker News · لخّصه HeadlinesBriefing