<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Data-Viz on AW — notes &amp; thoughts</title><link>https://coffepowered.github.io/tags/data-viz/</link><description>Recent content in Data-Viz on AW — notes &amp; thoughts</description><generator>Hugo -- gohugo.io</generator><language>it-IT</language><managingEditor>Andrea Ruggerini</managingEditor><webMaster>Andrea Ruggerini</webMaster><lastBuildDate>Sat, 10 May 2025 21:28:43 -0500</lastBuildDate><atom:link href="https://coffepowered.github.io/tags/data-viz/index.xml" rel="self" type="application/rss+xml"/><item><title>Drawing a coffee plot, with LLMs ep0</title><link>https://coffepowered.github.io/blogs/coffe/</link><pubDate>Sat, 10 May 2025 21:28:43 -0500</pubDate><guid>https://coffepowered.github.io/blogs/coffe/</guid><description>&lt;h1 id="llm-assisted-work"&gt;LLM-assisted work?&lt;/h1&gt;
&lt;p&gt;Will the LLM take over us? Yes, no. Maybe.&lt;/p&gt;
&lt;p&gt;The only thing I&amp;rsquo;m sure about is that those cool stuff are not able to assess the certainty of text (&amp;ldquo;opinions?&amp;rdquo;) they generate.&lt;/p&gt;
&lt;p&gt;Moreover, In my humanly-limited experience, I have yet to see LLMs to meaningful contribute to any asset, i.e. to add valuable and extensive contribution to non-throaway code. All of this may seem strong, but hey, this does not mean productivity cannot be positively impacted.&lt;/p&gt;</description></item><item><title>Sparse notes</title><link>https://coffepowered.github.io/blogs/2022-sparse-notes/</link><pubDate>Wed, 01 Mar 2023 21:28:43 -0500</pubDate><guid>https://coffepowered.github.io/blogs/2022-sparse-notes/</guid><description>&lt;h2 id="data-science"&gt;Data science&lt;/h2&gt;
&lt;ul&gt;
&lt;li&gt;&lt;code&gt;march&lt;/code&gt; &lt;a href="https://bookdown.org/max/FES/"&gt;Effect of irrelevant features&lt;/a&gt; - a nice experimental test&lt;/li&gt;
&lt;li&gt;&lt;code&gt;march&lt;/code&gt; &lt;a href="https://www.coursera.org/learn/competitive-data-science/lecture/8o1Hc/matrix-factorizations"&gt;Matrix factorizaton recap in 6minutes&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;code&gt;march&lt;/code&gt; &lt;a href="https://www.kaggle.com/code/vprokopev/mean-likelihood-encodings-a-comprehensive-study/notebook"&gt;mean encodings: a comprehesive study&lt;/a&gt;, check also &lt;a href="https://github.com/scikit-learn-contrib/category_encoders"&gt;category_encoders sklearn library&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;code&gt;march&lt;/code&gt; relationship between &lt;a href="https://stats.stackexchange.com/questions/134282/relationship-between-svd-and-pca-how-to-use-svd-to-perform-pca"&gt;SVD and PCA&lt;/a&gt; + a comprehensive &lt;a href="https://arxiv.org/pdf/1404.1100.pdf"&gt;tutorial on arxiv&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;code&gt;march&lt;/code&gt; Naive-Bayes classification from &lt;a href="https://jakevdp.github.io/PythonDataScienceHandbook/05.05-naive-bayes.html"&gt;scratch&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href="https://arxiv.org/abs/2203.05556"&gt;On Embeddings for Numerical Features in Tabular Deep Learning&lt;/a&gt;&lt;/li&gt;
&lt;li&gt;&lt;a href="https://cmry.github.io/notes/euclidean-v-cosine"&gt;Euclidean vs cosine distance&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;h2 id="data-viz"&gt;Data viz&lt;/h2&gt;
&lt;h2 id="complimentary"&gt;Complimentary&lt;/h2&gt;
&lt;h2 id="temporary"&gt;Temporary&lt;/h2&gt;
&lt;p&gt;Staging area for links that will be forgotten soon:&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;&lt;code&gt;march&lt;/code&gt; &lt;a href="https://www.kaggle.com/competitions/h-and-m-personalized-fashion-recommendations/data"&gt;H&amp;amp;M personalized fashion&lt;/a&gt; reccomendation&lt;/li&gt;
&lt;li&gt;&lt;code&gt;march&lt;/code&gt; learning &lt;a href="https://wattenberger.com/blog/d3"&gt;D3js&lt;/a&gt; + &lt;a href="https://www.linkedin.com/learning/d3-js-essential-training-for-data-scientists/what-you-need-to-know"&gt;essential training&lt;/a&gt; + custom visuals into &lt;a href="https://www.linkedin.com/learning/advanced-power-bi-custom-visuals-with-d3-js/intro-to-microsoft-power-bi?u=2057564"&gt;powerbi&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;</description></item><item><title>What's all that for? Thinking of the BTC energy consumptions</title><link>https://coffepowered.github.io/blogs/on-the-btc-energy-toll/</link><pubDate>Tue, 10 Jan 2023 21:28:43 -0500</pubDate><guid>https://coffepowered.github.io/blogs/on-the-btc-energy-toll/</guid><description>&lt;h2 id="i-can-remember-the-snow"&gt;I can remember the snow&lt;/h2&gt;
&lt;p&gt;Born on the cusp of the 90s, I was privileged to witness a period of great optimism and progress. The winds of freedom and democracy seemed to be blowing strong, and economies were thriving. One particularly noteworthy achievement from this time was the establishment of the &lt;a href="https://www.unep.org/ozonaction/who-we-are/about-montreal-protocol"&gt;Montreal Protocol&lt;/a&gt;, a treaty designed to phase out ozone-depleting substances, a move that has proven highly successful.&lt;/p&gt;
&lt;p&gt;I have fond memories of being a child during this time, including TV commercials&lt;sup id="fnref:1"&gt;&lt;a href="#fn:1" class="footnote-ref" role="doc-noteref"&gt;1&lt;/a&gt;&lt;/sup&gt; that highlighted the importance of protecting polar bears. Even after all these years, the imagery of these ads stays with me, and their message continues to resonate, a testament to their powerful impact.&lt;/p&gt;</description></item><item><title>A (reasonably) complex radar chart</title><link>https://coffepowered.github.io/blogs/complex-radar-python/</link><pubDate>Fri, 11 Mar 2022 21:28:43 -0500</pubDate><guid>https://coffepowered.github.io/blogs/complex-radar-python/</guid><description>&lt;p&gt;A radar (or spider) chart is a convenient method of displaying multivariate data in a form of 2-dimensional chart.&lt;/p&gt;
&lt;p&gt;When I say convenient, I mean it is particularly well-accepted by people and gives a good intuition when comparing different items/subjects.&lt;/p&gt;
&lt;p&gt;Think about comparing 2 (or more) football players in terms of dribbling, running speed, shots and pressure. Even with only four variables bar plot would become cumbersome to deal with and not immediate to perceive. That&amp;rsquo;s why they are particularly &lt;a href="https://statsbomb.com/articles/soccer/revisiting-radars/"&gt;popular in sports analytics&lt;/a&gt;.&lt;/p&gt;</description></item></channel></rss>