How a fridge stays cold
A fridge doesn’t create cold — it removes heat from inside and dumps it outside (usually through the warm coils on the back).It’s basically a heat‑moving machine. It works using a repeating cycle: 🔁 The…
Where is robots.txt
The robots.txt file is a public text file that lives in the root directory of your website. 1. How to find (view) it You can view any website’s robots.txt file by adding /robots.txt to the…
Generative Engine Optimization: Getting your website discovered GPT, Gemini, Claude,…
Getting your website discovered and “understood” by AI models (like Gemini, GPT, and Claude) requires a shift from traditional SEO to Generative Engine Optimization (GEO). While SEO focuses on ranking links, GEO focuses on training…
What is an Antioxidant? Antioxidant & Cancer
What Is an Antioxidant? Think of your body like a car engine. The oxygen we breathe acts as fuel, helping our cells produce the energy we need to survive. However, just like a car engine…
Paid Member Subscriptions: How to make all pages visible to non-login guests
The issue is probably coming from the Global Content Restriction add-on, you cannot simply “reset” the add-on with a single button. Instead, you have two options: either remove the specific bad rule (recommended) or turn…
What are AdMob Campaigns for? How to use?
You usually do not pay AdMob for running campaigns within the AdMob console. In fact, one type of campaign (Direct Sold) is designed to help you make money, and the other (House Ads) is free…
Relationship Between MAE, MSE, RMSE
📐 Definitions (for clarity) Let errors be . MAE MSE RMSE 📐 Relationship Between and Let the errors be Then: Mean Absolute Error (MAE) Mean Squared Error (MSE) Key Relationship 1. Jensen’s Inequality gives: Why?…
Similarity Metrics for MR Image-to-Image Translation
The major conclusion of the paper Similarity Metrics for MR Image-to-Image Translation is that relying on the most commonly used metrics, specifically SSIM and PSNR, is insufficient for validating Magnetic Resonance (MR) image-to-image translation models…
Useful shortcuts in jupyter notebook & colab
jupyter notebook shortcuts Jupyter Notebook has many helpful keyboard shortcuts that can speed up your workflow. Here are the most commonly used ones: General Shortcuts Command Mode (press Esc to enter) Edit Mode (press Enter…
Integral: How to weigh an elephant?
L??ng Th? Vinh, a renowned scholar, ingeniously weighed an elephant by using water displacement, showcasing his mathematical brilliance. His method relates to integration, which sums small quantities to determine total weight, underlying the connection between math and practical problem-solving.
Polynomial regression in Python
Polynomial regression is a form of regression analysis where the relationship between the independent variable and the dependent variable is modeled as an degree polynomial. Polynomial regression fits a nonlinear relationship between the value of…
Why is contrastive learning?
Contrastive learning is a technique used in machine learning, particularly in the field of self-supervised and unsupervised learning. It focuses on learning to distinguish between similar and dissimilar pairs of data points by contrasting them…
17. Siamese network for detecting demons!
this comic is a non-technical introduction to the idea of the Siamese network, when the fairies are talking about a magical flower that can detect demons
Popular French songs with English lyrics
Tu viens le soir (You come in the evening)Danser sur des airs de guitares (Dancing to guitar tunes)Et puis tu bouges (And then you move)Tes cheveux noirs, tes lèvres rouges (Your black hair, your red…
places to visit in Hue, Da Nang, and Hoi An and potential tours
Here’s a list of recommended places to visit in Hue, Da Nang, and Hoi An: Hue: Da Nang: Hoi An: These locations offer a mix of history, culture, nature, and relaxation to enhance your travel…
Places to visit in Binh Dinh
Bình Định, located in Vietnam’s central coastal region, offers a diverse range of attractions, from stunning beaches to historical and cultural landmarks. Here are some must-visit places in Bình Định: 1. Ky Co Beach 2.…
create a menu visible only to logged‑in users
To create a menu visible only to logged‑in users…and show a different menu to the public, the key idea is: You can achieve this using: Let’s go through the simplest and most powerful method. Method…
disable Jetpack’s image/video/…sitemap while keeping the normal (post/page/link) sitemap active
Here’s the cleanest, most reliable way to disable Jetpack’s image sitemap while keeping the normal (post/page/link) sitemap active, based on the filters documented in community discussions and Jetpack’s own developer resources. ✅ How to Disable…
What is a vector space and examples
A vector space (or linear space) is a fundamental concept in mathematics, specifically in linear algebra. It is a set of objects called vectors, along with two operations: vector addition and scalar multiplication, that satisfy…
Basis of vector space
1. Basis of a Vector Space A basis of a vector space is a set of vectors that satisfy two key properties: Intuition: Properties: 2. Dimension of a Vector Space The dimension of a vector…
Connection Between Positive Definite Matrices and Bilinear Forms
A positive definite matrix and its connection to a bilinear form is a fundamental concept in linear algebra and geometry. Here’s a detailed explanation: Positive Definite Matrix A symmetric matrix of size is called positive…
Choosing a Boyfriend Explained: Dating as a Maximum Likelihood Problem with the EM Algorithm
Choosing a boyfriend as a maximum likelihood problem can be framed as an exercise in probabilistic decision-making, where the goal is to maximize the likelihood of selecting a partner who best fits your desired criteria…
An overview of explainable AI techniques
Explainable AI (XAI) techniques are methods and processes used to make AI models and their predictions understandable to humans. These techniques are critical for building trust, ensuring ethical use, and meeting regulatory requirements in AI…
Common distance measures in machine learning and their properties
Common distance measures in machine learning, their formulas, use cases, and detailed properties: 1. Euclidean Distance 2. Manhattan Distance (L1 Norm) 3. Minkowski Distance 4. Cosine Similarity 5. Hamming Distance 6. Jaccard Distance 7. Mahalanobis…
Water Puppetry – A Magical Art from Vietnam
Water puppetry is a unique art form from Vietnam, unlike any other type of puppetry. Instead of performing on a dry stage, these puppets dance right on the water! A Stage on the Water Water…
Using AI to check if a research paper was written almost purely of AI
It’s a bit funny to use AI to check if a research paper was written almost purely by AI. But it helps a lot. While people nowadays use AI to write papers so much, and…
Attention Transfer for Convolutional Neural Networks
The paper “Paying more attention to attention: improving the performance of convolutional neural networks via attention transfer” by Sergey Zagoruyko, Nikos Komodakis Université proposed a novel training methodology called attention transfer to improve the performance of convolutional neural…
Physics-Informed Neural Networks for Brain Molecular Transport from MRI
The method described in the paper “Investigating molecular transport in the human brain from MRI with physics‑informed neural networks” by Bastian Zapf, Johannes Haubner, Miroslav Kuchta, Geir Ringstad, Per Kristian Eide, Kent‑Andre Mardal centres on…
How social media platforms choose what appear in your feeds?
The video recommendation systems on TikTok, Instagram (Reels), and YouTube are sophisticated machine learning algorithms designed to maximize your engagement by showing you content you’re most likely to watch and enjoy. While each platform has…
“Brain wash” each night- the glymphatic system – and the importance of sleep
Let’s talk about the glymphatic system and its implications for central nervous system (CNS) pharmacotherapy. The video explains that delivering drugs to the CNS is difficult due to the blood–brain barrier (BBB), but the glymphatic…
brain datasets that have missing mri sequences
Finding datasets that naturally feature missing sequences (where patients were simply not scanned with the full protocol) is rare because public repositories usually curate data to ensure completeness. However, several high-profile datasets are specifically designed…
THE WALLS OF ASGARD
In the beginning of time, just after the Æsir’s war against the vanes, Åsgard’s walls lay in ruins. Then a mysterious builder appeared in Valhalla and offered to solve the problem. Not only that –…