https://chunghaolee.com/tags/analytics/Recent content in Analytics on Chung-Hao LeeHugoenSat, 14 Feb 2026 00:00:00 +0000https://chunghaolee.com/posts/ai-practice-journal-vol.01/Sat, 14 Feb 2026 00:00:00 +0000https://chunghaolee.com/posts/ai-practice-journal-vol.01/<h2 id="ai-實戰手札-vol01回歸數據本質透過深度錯誤分析-error-analysis-突破-prompt-engineering-瓶頸" class="relative group">【AI 實戰手札 Vol.01】回歸數據本質：透過深度錯誤分析 (Error Analysis) 突破 Prompt Engineering 瓶頸 <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#ai-%e5%af%a6%e6%88%b0%e6%89%8b%e6%9c%ad-vol01%e5%9b%9e%e6%ad%b8%e6%95%b8%e6%93%9a%e6%9c%ac%e8%b3%aa%e9%80%8f%e9%81%8e%e6%b7%b1%e5%ba%a6%e9%8c%af%e8%aa%a4%e5%88%86%e6%9e%90-error-analysis-%e7%aa%81%e7%a0%b4-prompt-engineering-%e7%93%b6%e9%a0%b8" aria-label="Anchor">#</a></span></h2><p> <figure> <picture class="mx-auto my-0 rounded-md" > <source srcset="https://chunghaolee.com/posts/ai-practice-journal-vol.01/pic_hu_22d6338662ef8fbf.webp 330w,https://chunghaolee.com/posts/ai-practice-journal-vol.01/pic_hu_c34006ab85ebb3f5.webp 660w ,https://chunghaolee.com/posts/ai-practice-journal-vol.01/pic_hu_456f1e0a1f313bfd.webp 1024w ,https://chunghaolee.com/posts/ai-practice-journal-vol.01/pic_hu_efcdcf3f3f6bedf7.webp 1320w " sizes="100vw" type="image/webp" /> <img width="2336" height="1760" class="mx-auto my-0 rounded-md" loading="lazy" decoding="async" src="https://chunghaolee.com/posts/ai-practice-journal-vol.01/pic_hu_ec5ac0b48b97c27f.png" srcset="https://chunghaolee.com/posts/ai-practice-journal-vol.01/pic_hu_6f327c31a9d85d53.png 330w,https://chunghaolee.com/posts/ai-practice-journal-vol.01/pic_hu_ec5ac0b48b97c27f.png 660w ,https://chunghaolee.com/posts/ai-practice-journal-vol.01/pic_hu_4210f0e77c030ee.png 1024w ,https://chunghaolee.com/posts/ai-practice-journal-vol.01/pic_hu_8c2dbe3206f2f183.png 1320w " sizes="100vw" /> </picture> </figure> </p> <hr> <p><strong>In the development of high-performance AI systems, it is easy to rely on technical intuition while overlooking fundamental engineering truths.</strong> Recently, while working on a <strong>Video Content Moderation</strong> task, I navigated a deep dialectic between &ldquo;theoretical optimization&rdquo; and &ldquo;data-centric reality.&rdquo; This experience redefined my understanding of &ldquo;pragmatism&rdquo; in AI engineering.</p>https://chunghaolee.com/portfolio/australias-space-launch-roadmap/Sat, 13 Dec 2025 00:00:00 +0800https://chunghaolee.com/portfolio/australias-space-launch-roadmap/<div style="text-align: center; margin: 20px 0;"> <a href="Australia Space Launch Roadmap.pdf" download class="download-button" style="display: inline-block; padding: 12px 24px; background-color: #007bff; color: white; text-decoration: none; border-radius: 5px; font-weight: bold; transition: background-color 0.3s;"> 📥 Download Portfolio PDF </a> </div> <style> .download-button:hover { background-color: #0056b3 !important; } .pdf-container { width: 100%; max-width: 900px; margin: 0 auto; padding: 20px 0; } .pdf-embed { width: 100%; height: 600px; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); margin-bottom: 30px; } .pdf-page-image { width: 100%; margin-bottom: 20px; border: 1px solid #e0e0e0; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); } @media (max-width: 768px) { .pdf-embed { height: 600px; } } </style> <div class="pdf-container"> <h3 id="-full-portfolio-document" class="relative group">📄 Full Portfolio Document <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#-full-portfolio-document" aria-label="Anchor">#</a></span></h3><!-- Option 1: Using iframe embed (works if PDF is in static folder) --> <iframe src="Australia Space Launch Roadmap.pdf" class="pdf-embed" type="application/pdf"> <p>Your browser doesn't support PDF viewing. Please <a href="Australia Space Launch Roadmap.pdf">download the PDF</a> to view it.</p>https://chunghaolee.com/portfolio/2025-11-23-powering-the-ai-revolution-australias-pivotal-role-in-the-global-mineral-supply-chain/Sat, 22 Nov 2025 00:00:00 +0800https://chunghaolee.com/portfolio/2025-11-23-powering-the-ai-revolution-australias-pivotal-role-in-the-global-mineral-supply-chain/<div style="text-align: center; margin: 20px 0;"> <a href="AI Revolution - Australia Pivotal Role in the Global Mineral Supply Chain.pdf" download class="download-button" style="display: inline-block; padding: 12px 24px; background-color: #007bff; color: white; text-decoration: none; border-radius: 5px; font-weight: bold; transition: background-color 0.3s;"> 📥 Download Portfolio PDF </a> </div> <style> .download-button:hover { background-color: #0056b3 !important; } .pdf-container { width: 100%; max-width: 900px; margin: 0 auto; padding: 20px 0; } .pdf-embed { width: 100%; height: 600px; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); margin-bottom: 30px; } .pdf-page-image { width: 100%; margin-bottom: 20px; border: 1px solid #e0e0e0; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); } @media (max-width: 768px) { .pdf-embed { height: 600px; } } </style> <div class="pdf-container"> <h3 id="-full-portfolio-document" class="relative group">📄 Full Portfolio Document <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#-full-portfolio-document" aria-label="Anchor">#</a></span></h3><!-- Option 1: Using iframe embed (works if PDF is in static folder) --> <iframe src="AI Revolution - Australia Pivotal Role in the Global Mineral Supply Chain.pdf" class="pdf-embed" type="application/pdf"> <p>Your browser doesn't support PDF viewing. Please <a href="AI Revolution - Australia Pivotal Role in the Global Mineral Supply Chain.pdf">download the PDF</a> to view it.</p>https://chunghaolee.com/portfolio/govhack2025---data-center-challenging/Sat, 30 Aug 2025 00:00:00 +0800https://chunghaolee.com/portfolio/govhack2025---data-center-challenging/<div style="text-align: center; margin: 20px 0;"> <a href="GovHack 2025_ Australia's AI Future - A Data-Driven Framework for Data Center Siting.pdf" download class="download-button" style="display: inline-block; padding: 12px 24px; background-color: #007bff; color: white; text-decoration: none; border-radius: 5px; font-weight: bold; transition: background-color 0.3s;"> 📥 Download Portfolio PDF </a> </div> <style> .download-button:hover { background-color: #0056b3 !important; } .pdf-container { width: 100%; max-width: 900px; margin: 0 auto; padding: 20px 0; } .pdf-embed { width: 100%; height: 1200px; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); margin-bottom: 30px; } .pdf-page-image { width: 100%; margin-bottom: 20px; border: 1px solid #e0e0e0; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); } @media (max-width: 768px) { .pdf-embed { height: 600px; } } </style> <div class="pdf-container"> <h3 id="-full-portfolio-document" class="relative group">📄 Full Portfolio Document <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#-full-portfolio-document" aria-label="Anchor">#</a></span></h3><!-- Option 1: Using iframe embed (works if PDF is in static folder) --> <iframe src="GovHack 2025_ Australia's AI Future - A Data-Driven Framework for Data Center Siting.pdf" class="pdf-embed" type="application/pdf"> <p>Your browser doesn't support PDF viewing. Please <a href="GovHack 2025_ Australia's AI Future - A Data-Driven Framework for Data Center Siting.pdf">download the PDF</a> to view it.</p>https://chunghaolee.com/portfolio/brisbane-2032-olympics-workforce-demand-analysis/Sun, 20 Jul 2025 00:00:00 +0800https://chunghaolee.com/portfolio/brisbane-2032-olympics-workforce-demand-analysis/<div style="text-align: center; margin: 20px 0;"> <a href="Brisbane 2032 Olympics Workforce Demand Analysis.pdf" download class="download-button" style="display: inline-block; padding: 12px 24px; background-color: #007bff; color: white; text-decoration: none; border-radius: 5px; font-weight: bold; transition: background-color 0.3s;"> 📥 Download Portfolio PDF </a> </div> <style> .download-button:hover { background-color: #0056b3 !important; } .pdf-container { width: 100%; max-width: 900px; margin: 0 auto; padding: 20px 0; } .pdf-embed { width: 100%; height: 600px; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); margin-bottom: 30px; } .pdf-page-image { width: 100%; margin-bottom: 20px; border: 1px solid #e0e0e0; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); } @media (max-width: 768px) { .pdf-embed { height: 600px; } } </style> <div class="pdf-container"> <h3 id="-full-portfolio-document" class="relative group">📄 Full Portfolio Document <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#-full-portfolio-document" aria-label="Anchor">#</a></span></h3><!-- Option 1: Using iframe embed (works if PDF is in static folder) --> <iframe src="Brisbane 2032 Olympics Workforce Demand Analysis.pdf" class="pdf-embed" type="application/pdf"> <p>Your browser doesn't support PDF viewing. Please <a href="Brisbane 2032 Olympics Workforce Demand Analysis.pdf">download the PDF</a> to view it.</p>https://chunghaolee.com/posts/2025-06-29_turning_data_into_insights_for_smarter_business_decisions/Sun, 29 Jun 2025 00:00:00 +0800https://chunghaolee.com/posts/2025-06-29_turning_data_into_insights_for_smarter_business_decisions/<p>In my journey as a PM within AI and technology sectors, I’ve consistently operated at the nexus of execution and strategy—delivering on objectives, aligning multidisciplinary teams, and driving tangible business impact. Yet, behind every milestone lies the same fundamental question:
What hidden insights does the data hold—and how can they inform smarter decisions?</p> <p>I’ve come to realize that a good business decision isn’t propelled by data alone, but by the insights uncovering the “why.” While mastering SQL, statistics, and dashboards is indispensable, the real differentiator in business data analytics is the ability to translate raw numbers into strategic insights.</p>https://chunghaolee.com/posts/2025-06-01_the_art_of_data-informed_decision_making/Sun, 01 Jun 2025 00:00:00 +0800https://chunghaolee.com/posts/2025-06-01_the_art_of_data-informed_decision_making/<p>As a PM, I’ve navigated countless crossroads where data seemed to hold all the answers. But here’s the reality I’ve learned:<br> 📊 Data points are signposts, not destinations.<br> While metrics powerfully guide product direction and feature prioritization, over-reliance on raw data can lead to costly missteps. True business impact emerges when quantitative insights fuse with domain expertise and contextual wisdom.</p> <br> <p>身為產品經理，我曾歷經無數次十字路口，當時數據看似掌握所有答案。但這是我學到的真相：<br> 📊 數據只是路標，而非終點。<br> 雖然指標能有力指引產品方向與功能優先順序，但過度仰賴原始數據，反而會導致代價高昂的誤判。唯有當量化洞察與領域專業和情境智慧融合時，才能真正創造商業價值。</p> <hr> <h2 id="a-case-study-from-my-previous-project" class="relative group">A case study from my previous project <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#a-case-study-from-my-previous-project" aria-label="Anchor">#</a></span></h2><p>When Data Tells Half the Story: How Expert Judgment Transformed Our Predictive Model<br> In a project analyzing laptop logs to predict hardware failures, my team identified a key power-related log pattern strongly correlated with malfunctions. Initial models flagged this as a critical failure signal—until false positives skyrocketed.</p>https://chunghaolee.com/portfolio/queensland_aluminum_industry_emissions/Tue, 27 May 2025 00:00:00 +0800https://chunghaolee.com/portfolio/queensland_aluminum_industry_emissions/<p><strong>Queensland Aluminium Industry Emissions:</strong> 2024 Status, 2030 Reduction Targets and Decarbonization Roadmap</p> <div style="text-align: center; margin: 20px 0;"> <a href="Queensland Aluminium Industry Emissions.pdf" download class="download-button" style="display: inline-block; padding: 12px 24px; background-color: #007bff; color: white; text-decoration: none; border-radius: 5px; font-weight: bold; transition: background-color 0.3s;"> 📥 Download Portfolio PDF </a> </div> <style> .download-button:hover { background-color: #0056b3 !important; } .pdf-container { width: 100%; max-width: 900px; margin: 0 auto; padding: 20px 0; } .pdf-embed { width: 100%; height: 1200px; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); margin-bottom: 30px; } .pdf-page-image { width: 100%; margin-bottom: 20px; border: 1px solid #e0e0e0; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); } @media (max-width: 768px) { .pdf-embed { height: 600px; } } </style> <div class="pdf-container"> <h3 id="-full-portfolio-document" class="relative group">📄 Full Portfolio Document <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#-full-portfolio-document" aria-label="Anchor">#</a></span></h3><!-- Option 1: Using iframe embed (works if PDF is in static folder) --> <iframe src="Queensland Aluminium Industry Emissions.pdf" class="pdf-embed" type="application/pdf"> <p>Your browser doesn't support PDF viewing. Please <a href="Queensland Aluminium Industry Emissions.pdf">download the PDF</a> to view it.</p>https://chunghaolee.com/portfolio/baseball-informaticsfrom-milb-to-mlb-debut/Wed, 24 May 2023 00:00:00 +0800https://chunghaolee.com/portfolio/baseball-informaticsfrom-milb-to-mlb-debut/<hr> <p>Please find the <a href="https://link.springer.com/chapter/10.1007/978-981-19-9658-0_5" target="_blank" rel="noreferrer">Paper Link</a></p> <h3 id="summary" class="relative group">Summary: <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#summary" aria-label="Anchor">#</a></span></h3><p>The study analyzes data from 4,321 fielders (non-pitchers) drafted by MLB teams between 2001 and 2010, using their aggregated MiLB career statistics and draft information. The goal is to build predictive models that can accurately determine whether a player will reach the MLB, a feat achieved by less than 20% of drafted prospects. The authors employ exploratory data analysis (EDA), variable selection techniques (including Lasso regression), and four different ML models (eXtreme Gradient Boosting - XGB, Random Forest - RF, Decision Tree - DT, and Support Vector Machine - SVM) to achieve this. The models are trained on 75% of the data and validated on the remaining 25%. The best-performing model is then tested on an out-of-sample dataset of players drafted in 2013.</p>https://chunghaolee.com/portfolio/2022-12-15-anomaly-detection-in-driving-by-cluster-analysis-twice/Thu, 15 Dec 2022 00:00:00 +0800https://chunghaolee.com/portfolio/2022-12-15-anomaly-detection-in-driving-by-cluster-analysis-twice/<div style="text-align: center; margin: 20px 0;"> <a href="Anomaly Detection in Driving by Cluster Analysis Twice.pdf" download class="download-button" style="display: inline-block; padding: 12px 24px; background-color: #007bff; color: white; text-decoration: none; border-radius: 5px; font-weight: bold; transition: background-color 0.3s;"> 📥 Download Portfolio PDF </a> </div> <style> .download-button:hover { background-color: #0056b3 !important; } .pdf-container { width: 100%; max-width: 900px; margin: 0 auto; padding: 20px 0; } .pdf-embed { width: 100%; height: 1200px; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); margin-bottom: 30px; } .pdf-page-image { width: 100%; margin-bottom: 20px; border: 1px solid #e0e0e0; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); } @media (max-width: 768px) { .pdf-embed { height: 600px; } } </style> <div class="pdf-container"> <h3 id="-full-portfolio-document" class="relative group">📄 Full Portfolio Document <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#-full-portfolio-document" aria-label="Anchor">#</a></span></h3><!-- Option 1: Using iframe embed (works if PDF is in static folder) --> <iframe src="Anomaly Detection in Driving by Cluster Analysis Twice.pdf" class="pdf-embed" type="application/pdf"> <p>Your browser doesn't support PDF viewing. Please <a href="Anomaly Detection in Driving by Cluster Analysis Twice.pdf">download the PDF</a> to view it.</p>https://chunghaolee.com/portfolio/cryopreservation-of-seeds-of-blue-waterlily-nymphaea-caerulea-using-glutathione-adding-plant-vitrification-solution-pvs+/Wed, 29 Jun 2016 00:00:00 +0800https://chunghaolee.com/portfolio/cryopreservation-of-seeds-of-blue-waterlily-nymphaea-caerulea-using-glutathione-adding-plant-vitrification-solution-pvs+/<div style="text-align: center; margin: 20px 0;"> <a href="Cryopreservation of seeds of blue waterlily -Nymphaea caerulea- using glutathione adding plant vitrification solution, PVS+.pdf" download class="download-button" style="display: inline-block; padding: 12px 24px; background-color: #007bff; color: white; text-decoration: none; border-radius: 5px; font-weight: bold; transition: background-color 0.3s;"> 📥 Download Portfolio PDF </a> </div> <style> .download-button:hover { background-color: #0056b3 !important; } .pdf-container { width: 100%; max-width: 900px; margin: 0 auto; padding: 20px 0; } .pdf-embed { width: 100%; height: 1200px; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); margin-bottom: 30px; } .pdf-page-image { width: 100%; margin-bottom: 20px; border: 1px solid #e0e0e0; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); } @media (max-width: 768px) { .pdf-embed { height: 600px; } } </style> <div class="pdf-container"> <h3 id="-full-portfolio-document" class="relative group">📄 Full Portfolio Document <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100"><a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700" style="text-decoration-line: none !important;" href="#-full-portfolio-document" aria-label="Anchor">#</a></span></h3><!-- Option 1: Using iframe embed (works if PDF is in static folder) --> <iframe src="Cryopreservation of seeds of blue waterlily -Nymphaea caerulea- using glutathione adding plant vitrification solution, PVS+.pdf" class="pdf-embed" type="application/pdf"> <p>Your browser doesn't support PDF viewing. Please <a href="Cryopreservation of seeds of blue waterlily -Nymphaea caerulea- using glutathione adding plant vitrification solution, PVS+.pdf">download the PDF</a> to view it.</p>