Momentum Update Concept
3 explanations from your library.
11:47IIT Madras (NPTEL)
Gradient Descent Variants and Momentum
“So we will just start off with the momentum update, so what this variant does is to add a fraction of the previous update to the current update, okay.”
20:28IIT Madras (NPTEL)
Learning Rate Decay
“This is important because that this learning rate will will dictate how by how much you change your parameters by right because that the magnitude of the update also depends on not only on a gradient of the loss function with respect to the weights but also also on the”
Closest moment in this session: it teaches the idea without listing it as a key concept.
32:09Prof. Prabir Kumar Biswas, IIT Kharagpur
Overfitting, Underfitting and Regularization
“graphically you find that all these blue dots in these examples they are the training data and the red curve over here,”
Closest moment in this session: it teaches the idea without listing it as a key concept.
Cloudinary under the hood2 Cloudinary URLs make this page. No render servers: each one is generated on request and cached.
Compare reel
3 explanations of this concept, from different sessions, spliced into one video with fl_splice. Each clip is labelled with its speaker.
…/video/upload/so_106.1,eo_119.9,w_1280,h_720,c_fill/l_video:pravaha:2b17046e-fb2d-4a2c-ad2c-e84a76f8c28a,fl_spl…/so_27.4,eo_44.8,w_1280,h_720,c_fill/fl_layer_apply/fl_layer_apply,g_north_west,x_40,y_40,so_31.2,eo_46.1/f_auto:video,q_auto/pravaha/ff2c7367-5718-4b86-9d17-04328cf12206.mp4
- so_106.1
- starts at 106.1 s · and 5 more like it
- eo_119.9
- ends at 119.9 s · and 5 more like it
- w_1280
- 1280 px wide · and 2 more like it
- h_720
- 720 px tall · and 2 more like it
- c_fill
- crops to fill the frame exactly · and 2 more like it
- l_video:pravaha:2b17046e-fb…
- another video (pravaha/2b17046e-fb2d-4a2c-ad2c-e84a76f8c28a) as a layer
- fl_splice
- joins the next clip onto the end of this one · and 1 more like it
- fl_layer_apply
- places the layer defined just before · and 4 more like it
- l_video:pravaha:e35b9255-31…
- another video (pravaha/e35b9255-3117-4881-98cb-f7b89dc4d1cc) as a layer
- l_text:arial_34_bold:1%20%C…
- text layer “1 · IIT Madras (NPTEL)” · and 2 more like it
- co_white
- text colour white · and 2 more like it
- b_rgb:0f766ecc
- background #0f766ecc · and 2 more like it
- g_north_west
- anchored to the top-left corner · and 2 more like it
- x_40
- 40 px from the side · and 2 more like it
- y_40
- 40 px from the edge · and 2 more like it
- f_auto:video
- best format for each device (e.g. AV1, WebM, MP4, WebP)
- q_auto
- AI-chosen quality: smallest file that still looks right
Explanation thumbnail
The frame at that moment, cropped around the speaker by AI.
…/video/upload/so_107.6,c_fill,ar_16:9,w_640,g_auto/f_auto,q_auto/pravaha/ff2c7367-5718-4b86-9d17-04328cf12206.jpg
- so_107.6
- starts at 107.6 s
- c_fill
- crops to fill the frame exactly
- ar_16:9
- aspect ratio 16 : 9
- w_640
- 640 px wide
- g_auto
- AI picks the focus (the speaker or slide), not a blind centre crop
- f_auto
- best format for each device (e.g. AV1, WebM, MP4, WebP)
- q_auto
- AI-chosen quality: smallest file that still looks right
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