{"id":62525,"date":"2020-10-15T10:30:48","date_gmt":"2020-10-15T14:30:48","guid":{"rendered":"https:\/\/ibkrcampus.com\/?p=62525"},"modified":"2024-05-20T16:27:47","modified_gmt":"2024-05-20T20:27:47","slug":"towards-better-keras-modeling-part-v","status":"publish","type":"post","link":"https:\/\/www.interactivebrokers.com\/campus\/ibkr-quant-news\/towards-better-keras-modeling-part-v\/","title":{"rendered":"Towards Better Keras Modeling \u2013 Part V"},"content":{"rendered":"\n<p><em>See the&nbsp;<a href=\"\/campus\/ibkr-quant-news\/towards-better-keras-modeling-part-iv\/\">previous installment<\/a>&nbsp;in this series for Setup and Download<\/em>.<\/p>\n\n\n\n<p>Below is a peak into what that data looks like. You can get results directly from the returned&nbsp;<code>Scan()<\/code>&nbsp;object but I prefer to read back the csv and analyze that since I&#8217;d like to be able to monitor results as the come in (different process) and be able to evaluate in future w\/o re-running the Scan.<\/p>\n\n\n\n<p><em>Note: Since Log-Loss values are all so tightly distributed, I&#8217;m creating a val<strong>loss<\/strong>improvement metric which is the improvement relative to naive baseline (always estimating 50% probability). For this metric,&nbsp;<strong>higher is better<\/strong>.<\/em><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"745\" height=\"159\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist.png\" alt=\"\" class=\"wp-image-62879 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist.png 745w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist-700x149.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist-300x64.png 300w\" data-sizes=\"(max-width: 745px) 100vw, 745px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 745px; aspect-ratio: 745\/159;\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"728\" height=\"381\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist2.png\" alt=\"Keras Modeling\" class=\"wp-image-62880 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist2.png 728w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist2-700x366.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist2-300x157.png 300w\" data-sizes=\"(max-width: 728px) 100vw, 728px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 728px; aspect-ratio: 728\/381;\" \/><\/figure>\n\n\n\n<p>We could simply take the top result and call it good. However, I think the real value here is to gain understanding about how parameters affect results. Further it&#8217;s very unlikely that we&#8217;ve happened to find the global maximum with our starting values.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"Univariate-Relationships\">Univariate Relationships<\/h3>\n\n\n\n<p>Below, I&#8217;ll start by running several univariate measures to see what the impact of each factor appears to be, in isolation:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"760\" height=\"159\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist3.png\" alt=\"\" class=\"wp-image-62904 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist3.png 760w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist3-700x146.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist3-300x63.png 300w\" data-sizes=\"(max-width: 760px) 100vw, 760px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 760px; aspect-ratio: 760\/159;\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"752\" height=\"355\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist4.png\" alt=\"Keras Modeling\" class=\"wp-image-62906 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist4.png 752w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist4-700x330.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist4-300x142.png 300w\" data-sizes=\"(max-width: 752px) 100vw, 752px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 752px; aspect-ratio: 752\/355;\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"742\" height=\"146\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist5.png\" alt=\"\" class=\"wp-image-62911 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist5.png 742w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist5-700x138.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist5-300x59.png 300w\" data-sizes=\"(max-width: 742px) 100vw, 742px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 742px; aspect-ratio: 742\/146;\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"738\" height=\"361\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist6.png\" alt=\"Keras Modeling\" class=\"wp-image-62912 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist6.png 738w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist6-700x342.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist6-300x147.png 300w\" data-sizes=\"(max-width: 738px) 100vw, 738px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 738px; aspect-ratio: 738\/361;\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"755\" height=\"134\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist7.png\" alt=\"\" class=\"wp-image-62922 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist7.png 755w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist7-700x124.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist7-300x53.png 300w\" data-sizes=\"(max-width: 755px) 100vw, 755px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 755px; aspect-ratio: 755\/134;\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"742\" height=\"345\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist8.png\" alt=\"\" class=\"wp-image-62923 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist8.png 742w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist8-700x325.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist8-300x139.png 300w\" data-sizes=\"(max-width: 742px) 100vw, 742px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 742px; aspect-ratio: 742\/345;\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"761\" height=\"137\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist9.png\" alt=\"\" class=\"wp-image-62924 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist9.png 761w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist9-700x126.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist9-300x54.png 300w\" data-sizes=\"(max-width: 761px) 100vw, 761px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 761px; aspect-ratio: 761\/137;\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"741\" height=\"361\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist10.png\" alt=\"\" class=\"wp-image-62925 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist10.png 741w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist10-700x341.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist10-300x146.png 300w\" data-sizes=\"(max-width: 741px) 100vw, 741px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 741px; aspect-ratio: 741\/361;\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"765\" height=\"133\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist11.png\" alt=\"\" class=\"wp-image-62929 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist11.png 765w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist11-700x122.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist11-300x52.png 300w\" data-sizes=\"(max-width: 765px) 100vw, 765px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 765px; aspect-ratio: 765\/133;\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"743\" height=\"353\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist12.png\" alt=\"\" class=\"wp-image-62930 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist12.png 743w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist12-700x333.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist12-300x143.png 300w\" data-sizes=\"(max-width: 743px) 100vw, 743px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 743px; aspect-ratio: 743\/353;\" \/><\/figure>\n\n\n\n<p>As a total aside, we can also measure relationships which all assume, but may not know for certain. Below, I&#8217;ve plotted the number of epochs before early stopping (when the model begins to overfit and get worse on validation) vs. network size. Unsurprisingly, it takes larger networks longer to converge. The relationship seems pretty close to logarithmic relative to &#8220;links&#8221; between nodes.In&nbsp;[51]:<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"751\" height=\"132\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist13.png\" alt=\"\" class=\"wp-image-62933 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist13.png 751w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist13-700x123.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist13-300x53.png 300w\" data-sizes=\"(max-width: 751px) 100vw, 751px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 751px; aspect-ratio: 751\/132;\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"743\" height=\"340\" data-src=\"\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist14.png\" alt=\"\" class=\"wp-image-62934 lazyload\" data-srcset=\"https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist14.png 743w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist14-700x320.png 700w, https:\/\/ibkrcampus.com\/campus\/wp-content\/uploads\/sites\/2\/2020\/10\/alphaScientist14-300x137.png 300w\" data-sizes=\"(max-width: 743px) 100vw, 743px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 743px; aspect-ratio: 743\/340;\" \/><\/figure>\n\n\n\n<p><em>Visit&nbsp;The Alpha Scientist blog&nbsp;to download the complete code:<\/em><br><a href=\"https:\/\/alphascientist.com\/hyperparameter_optimization_with_talos.html\">https:\/\/alphascientist.com\/hyperparameter_optimization_with_talos.html<\/a><\/p>\n\n\n\n<p><em>The Alpha Scientist blog \u2013 Chad is a full-time quantitative trader who has been working on data analytics since before it was cool. He has long balanced his interest in computer science (MS in EE\/CS from MIT) with a fascination in markets (CFA designation in 2009). Prior to becoming a full-time quant, he built analytics products and managed teams at software companies across Silicon Valley.&nbsp;If you\u2019ve found this post useful, please follow&nbsp;<\/em><a href=\"https:\/\/twitter.com\/data2alpha\"><em>@data2alpha<\/em><\/a><em>&nbsp;on Twitter and forward to a friend or colleague who may also find this topic interesting.&nbsp;<\/em><a href=\"https:\/\/alphascientist.com\/\"><em>https:\/\/alphascientist.com\/<\/em><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Join The Alpha Scientist for a practical tutorial on how to run several univariate measures to see what the impact of each factor appears to be in isolation.<\/p>\n","protected":false},"author":186,"featured_media":62872,"comment_status":"closed","ping_status":"open","sticky":true,"template":"","format":"standard","meta":{"_acf_changed":true,"footnotes":""},"categories":[339,338,341,352,344],"tags":[8485,827,852,828,595,494,826],"contributors-categories":[13657],"class_list":{"0":"post-62525","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-data-science","8":"category-ibkr-quant-news","9":"category-quant-development","10":"category-quant-north-america","11":"category-quant-regions","12":"tag-data-mining","13":"tag-keras","14":"tag-machine-learning","15":"tag-numerox","16":"tag-python","17":"tag-quant","18":"tag-talos","19":"contributors-categories-the-alpha-scientist"},"pp_statuses_selecting_workflow":false,"pp_workflow_action":"current","pp_status_selection":"publish","acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.9 (Yoast SEO 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