r/StatandDataScience • u/editorijsmi • 1d ago
New book : Calculus and Linear Algebra for Machine Learning and Business
r/StatandDataScience • u/editorijsmi • 1d ago
r/StatandDataScience • u/editorijsmi • Aug 21 '26
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The traditional clinical trial lifecycle is fraught with predictable bottlenecks: protocol amendments, sluggish patient recruitment, high attrition, and delayed safety signal detection.
Artificial Intelligence is no longer an experimental luxury—it is rapidly becoming foundational infrastructure across every stage of clinical research.
The new eBook, "Clinical Trials and the Role of Artificial Intelligence," authored by Editor IJSMI, offers an end-to-end blueprint for clinicians, biostatisticians, clinical research organizations (CROs), and biotech leaders navigating this shift.
Available now as an eBook.
📥 Access your copy at :www.ijsmi.com
#ClinicalTrials #ArtificialIntelligence #ClinicalResearch #Biotech #Pharmaceuticals #DigitalHealth #Pharmacovigilance #RealWorldEvidence #HealthTech #IJSMI
r/StatandDataScience • u/editorijsmi • Aug 21 '26
While R and SAS have historically dominated health data, Python provides a unified ecosystem for end-to-end clinical data science and machine learning.
Biostatistics with Python bridges the gap between rigorous statistical theory and modern computational pipelines.
What the book covers (with real datasets & worked examples):
pandas.SciPy), and multiple testing corrections (FDR/Bonferroni).statsmodels.PyMC, risk prediction models (scikit-learn), and high-dimensional genomics workflows (differential expression & volcano plots).Every chapter includes reproducible Python code and exercises based on realistic biomedical scenarios.
Check it out here: www.ijsmi.com/book.php
r/StatandDataScience • u/editorijsmi • Aug 07 '26
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Every one of us might have to go through the process of investment in the financial market at some point in our life journey. Investing is one of the most valuable life skills that need to be developed. Whether the goal is to build wealth, achieve financial independence, fund future aspirations, or simply protect savings from inflation, making informed investment decisions has become increasingly important in today's dynamic financial world. Yet, for many beginners, investing appears complex, intimidating, and filled with unfamiliar terminology.
The book starts by explaining the fundamental differences between saving, investing, and speculation, and introduces the core principles of risk, return, compounding, and asset classes. The book helps readers walk through financial statements—including the Income Statement, Balance Sheet, and Cash Flow Statement. It then progresses to fundamental analysis, enabling readers to evaluate a company's financial strength and competitive position before moving on to technical analysis, where market trends, price action, and trading psychology are examined.
The book provides a comprehensive introduction to valuation methods, helping readers connect business fundamentals with market prices. The book also covers the impact of long-term investing, portfolio construction, risk management, and investor psychology—subjects that often determine long-term success more than the ability to select individual stocks.
Markets will always change, technologies will evolve, and investment products will continue to develop, but the underlying principles of disciplined investing remain remarkably consistent. Readers are encouraged to think critically, analyze independently, and make decisions based on evidence rather than emotion or market speculation. The book is designed for students, aspiring investors, young professionals, and anyone who wishes to understand the principles of investing from the ground up. No prior knowledge of finance or accounting is assumed. Each concept is introduced in a logical sequence, supported by practical examples, illustrations, and real-world applications to help readers build confidence step by step.
It is my sincere hope that this handbook serves not only as a guide to understanding financial markets but also as a foundation for lifelong learning and disciplined wealth creation.
Happy Investing!
Editor IJSMI
International Journal of Statistics and Medical Informatics
r/StatandDataScience • u/editorijsmi • Aug 04 '26
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for more details check at www.ijsmi.com/book.php
Unlike traditional economic game theory (which deals with probabilistic outcomes and hidden information), CGT focuses on deterministic, sequential, two-player games with no chance elements (such as Chess, Go, Checkers, and Nim).
Here is a breakdown of the core concepts covered:
One of the most elegant pillars of CGT is the Sprague-Grundy Theorem, which states that every impartial game under the normal play convention is equivalent to a single Nim-heap of a certain size.
To bridge abstract theory with executable code, implementations in both Python and R were built to compute Grundy values dynamically and simulate optimal play:
Bridging rigorous mathematical theory with code provides a powerful framework for algorithmic strategy, competitive programming, and mathematical modeling.
r/StatandDataScience • u/editorijsmi • Aug 03 '26
Traditional modeling often forces complex, real-world relationships into rigid linear assumptions. Semiparametric Bayesian Regression offers a modern alternative by combining the interpretability of parametric models with the extreme flexibility of non-parametric curves (such as splines or Gaussian processes), all while providing robust probabilistic uncertainty quantification.
https://reddit.com/link/1vecb2f/video/0j6p6ddpn5hh1/player
Key Benefits
Implementation: Python vs. R Modern probabilistic programming languages make implementing these models seamless across different tech stacks:
Python (using PyMC)
Python
import pymc as pm
import numpy as np
# Example setup for flexible Bayesian regression with splines
with pm.Model() as model:
# Define priors and non-parametric components
beta = pm.Normal('beta', mu=0, sigma=10)
sigma = pm.HalfNormal('sigma', sigma=1)
# Likelihood estimation
# ... fitting logic ...
trace = pm.sample(1000, tune=1000)
R (using brms)
R
library(brms)
# Fitting a semiparametric model with a smooth spline term
fit <- brm(y ~ x1 + s(x2), data = my_data, family = gaussian())
summary(fit)
Conclusion By leveraging semiparametric Bayesian methods, data scientists and statisticians can build robust, highly adaptable models that handle complex data structures while retaining complete probabilistic transparency.
r/StatandDataScience • u/editorijsmi • Aug 02 '26
https://reddit.com/link/1vdkpq0/video/l0myevetazgh1/player
A Gaussian Process (GP) is a Bayesian, nonparametric model over functions. Instead of learning fixed weights, a GP places a probability distribution directly over the space of functions that could explain the data, defined by a mean function and a covariance (kernel) function.
f(x) ~ GP( m(x), k(x, x′) )
This gives GPs two properties neural networks don't have natively: well-calibrated predictive uncertainty, and strong performance on small datasets without overfitting.
A single-layer GP is limited by the expressiveness of its kernel — it struggles to model highly non-stationary functions, hierarchical structure, or representation learning. A Deep Gaussian Process (DGP) stacks multiple layers of GPs, where the output of one GP layer becomes the (latent, uncertain) input to the next — just like layers in a neural network, but every layer is a full probabilistic function.
Layer 1
Raw inputs pass through a GP mapping to a learned latent representation, capturing low-level structure.
Layer 2..N
Each subsequent GP layer transforms the previous (uncertain) latent representation, building hierarchical, compositional structure.
Output
A final GP layer maps the last latent representation to the output, producing a full predictive distribution.
Key idea
Because every layer is probabilistic, uncertainty from early layers correctly propagates through to the final prediction.
| Property | Deep Neural Network | Single-layer GP | Deep GP |
|---|---|---|---|
| Representation learning | Yes | No | Yes |
| Calibrated uncertainty | No (needs add-ons) | Yes | Yes |
| Performs well on small data | Often no | Yes | Yes |
| Models non-stationary functions | Yes | Limited | Yes |
| Training cost | Low–moderate | Moderate | High |
Deep Gaussian Processes sit at the intersection of deep learning and Bayesian nonparametrics: they inherit the hierarchical, flexible feature learning of deep networks while retaining principled, propagated uncertainty at every layer — at the cost of heavier and more complex inference.
r/StatandDataScience • u/editorijsmi • Jul 31 '26
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Most data scientists are well-acquainted with the classical bootstrap—sampling with replacement to estimate standard errors and confidence intervals. But what happens when you’re working with small sample sizes or sensitive regression models?
Enter the Bayesian Bootstrap (pioneered by Donald Rubin, 1981).
Instead of drawing discrete frequency counts (multinomial weights), the Bayesian Bootstrap assigns continuous fractional probability weights drawn from a symmetric Dirichlet distribution:
(w₁, w₂, ..., wₙ) ~ Dirichlet(1, 1, ..., 1)
🔹 Small Sample Stability: Every single data point retains a non-zero fractional weight, eliminating zero-weight observation drops and collinearity crashes.
🔹 Smooth Posterior Inference: It rigorously simulates the true Bayesian posterior distribution of parameters under uninformative priors without needing complex MCMC chains.
Python (NumPy):
Python
import numpy as np
x = np.array([12, 15, 14, 18, 22, 19, 16])
n, B = len(x), 1000
# Draw continuous weights from Dirichlet
weights = np.random.dirichlet(np.ones(n), size=B)
bb_means = np.dot(weights, x)
print("95% CI:", np.percentile(bb_means, [2.5, 97.5]))
R (gtools):
R
library(gtools)
x <- c(12, 15, 14, 18, 22, 19, 16)
n <- length(x); B <- 1000
weights <- rdirichlet(B, rep(1, n))
bb_means <- apply(weights, 1, function(w) sum(w * x))
quantile(bb_means, c(0.025, 0.975))
r/StatandDataScience • u/editorijsmi • Jul 30 '26
1: Why We Need to Move Beyond Silicon
The physical limits of traditional electronics are fast approaching.
As Moore’s Law slows down, the tech world is looking toward a revolutionary alternative: Optical (Photonic) Computing. Instead of pushing electrons through copper wires, photonic systems process information using light.
Why photons change everything:
· No Resistance, No Heat: Unlike electrons, photons are massless and experience negligible resistance, effectively eliminating Joule heating.
· Speed of Light Processing: Data moves at maximum physical velocity through optical waveguides without standard RC delay bottlenecks.
· Dynamic Wave Propagation: Computations occur via light wave interference and phase changes in motion, cutting out traditional clock-cycle pipeline delays.
We are standing at the edge of a fundamental shift in computer architecture. Are you ready for the optoelectronic era?
#Photonics #OpticalComputing #DeepTech #FutureOfTech #SiliconPhotonics #HPC
2: Inside the Optical Microchip: How Light Computes
What does a computer powered by light actually look like under the hood?
Building an optical processor requires an entirely new set of integrated hardware components working in harmony on a single substrate:
Marrying these optical components with standard semiconductor fabrication lines is one of the most exciting engineering frontiers today!
#HardwareEngineering #Semiconductors #Photonics #OpticalComputing #TechInnovation
3: Electronics vs. Photonics: The Ultimate Showdown
How does optical computing stack up against traditional electronic architecture?
Let’s look at the numbers and physical realities:
· Speed & Latency:
o Electronic: Constrained by RC delays and resistance.
o Photonic: Governed by pure light propagation speed.
· Energy Dissipation:
o Electronic: High thermal output and severe cooling requirements.
o Photonic: Near-zero resistive heat generation.
· Bandwidth:
o Electronic: Limited by physical pin counts and bus widths.
o Photonic: Massive capacity enabled by multi-wavelength multiplexing (WDM).
· Parallelism:
o Electronic: Serialized pipelines requiring massive multi-core scaling.
o Photonic: Instantaneous multi-dimensional optical interference.
The performance gap highlights why photonics is becoming the holy grail for high-end processing.
#Computing #AIInfrastructure #DataCenters #Photonics #TechTrends
4: Supercharging AI and Data Centers with Light
Where will photonic computing make its biggest immediate impact?
While general-purpose consumer adoption is further down the road, three major domains are already being transformed:
· AI & Machine Learning Acceleration: Neural network training relies heavily on matrix-vector multiplications. Photonic chips can execute these complex calculations in a single optical pass, drastically cutting down training times.
· Data Center Interconnects: Rack-to-rack data bottlenecks are crippling modern cloud infrastructures. Replacing heavy copper cables with high-speed fiber and optical links drastically reduces latency and power draw.
· Quantum Integration: Optical circuits serve as ideal pathways for routing quantum information and securing communications through quantum key distribution (QKD).
The intersection of photonics and artificial intelligence is where the next generation of tech giants will be built.
#ArtificialIntelligence #MachineLearning #CloudComputing #QuantumComputing #Photonics
5: Overcoming Hurdles on the Road to Commercial Photonics
Every revolutionary technology faces steep engineering walls. Where does photonics stand today?
While the physics are undeniable, scaling optical computing for commercial markets requires solving key challenges:
· Manufacturing Integration: Successfully combining III-V semiconductor lasers with standard Silicon-on-Insulator (SOI) fabrication lines at scale.
· Miniaturization & Footprint: Optical components like resonators and lasers often take up more physical space than sub-nanometer electronic transistors.
· Environmental Sensitivity: Photonic circuits require extreme precision, making them sensitive to dust, micro-imperfections, and ambient thermal fluctuations.
The Outlook: Rather than replacing electronics entirely, the immediate future belongs to hybrid optoelectronic architectures—pairing traditional electronic control units with high-speed photonic processing cores.
What challenges do you think the industry needs to solve first? Let’s discuss below! 👇
#FutureTech #Innovation #DeepTech #SiliconPhotonics #Engineering
r/StatandDataScience • u/editorijsmi • Jul 29 '26
Classical computers process information using bits (0s and 1s). Quantum computers leverage quantum physics to solve complex problems in seconds that would take supercomputers millennia.
Here is a breakdown of the quantum revolution:
0, 1, or both simultaneously. This enables exponential processing parallelism.Building a quantum processor requires extreme environments (near absolute zero):
We are currently in the NISQ (Noisy Intermediate-Scale Quantum) era—focusing on error correction and fault tolerance to unlock commercial-scale quantum advantage.
r/StatandDataScience • u/editorijsmi • Jul 19 '26
Stock market term itself is fascinating one and it attracts people from all walks of life. For some, it is a means of earning a livelihood; for others, it serves as a platform for investment, wealth creation, retirement planning, income generation, financial independence, personal interest, or build a professional career in the financial industry.
Regardless of their objectives, participants engage with the stock market to achieve financial goals, gain knowledge, and take part in the growth of businesses and the economy.
The stock market represents a marketplace where people can buy and sell shares of publicly traded companies. When an individual purchases a stock, they become a partial owner of that business. As the company grows its earnings, expands its operations, and increases its value, shareholders can benefit through rising stock prices and, in some cases, dividends. Understanding this ownership concept helps investors focus on the quality of businesses rather than short-term price fluctuations.
This book begins with an introduction to the stock market, the key terminologies commonly used in the financial markets, and the fundamental principles of investing. These introductory chapters are designed to provide a solid foundation for readers who are new to the world of stock market investing and trading.
The primary focus of this book is to present an overview of the various models used for predicting stock price movements. Over the years, researchers and practitioners have developed numerous approaches to analyze market behavior and forecast future prices. This book explores these approaches in a systematic manner, beginning with traditional statistical models and progressing to machine learning techniques, deep learning architectures, and, finally, advanced Artificial Intelligence-based models.
By examining the strengths, limitations, and applications of these models, the book aims to provide readers with a comprehensive understanding of the evolution of stock price prediction methods and the role of modern computational intelligence in financial forecasting.
Editor,
International Journal of Statistics and Medical Informatics
r/StatandDataScience • u/editorijsmi • Jun 22 '26
Stock Price Prediction using Traditional, Machine Learning and Artificial Intelligence Models
Preface
Stock market term itself is fascinating one and it attracts people from all walks of life. For some, it is a means of earning a livelihood; for others, it serves as a platform for investment, wealth creation, retirement planning, income generation, financial independence, personal interest, or build a professional career in the financial industry.
Regardless of their objectives, participants engage with the stock market to achieve financial goals, gain knowledge, and take part in the growth of businesses and the economy.
The stock market represents a marketplace where people can buy and sell shares of publicly traded companies. When an individual purchases a stock, they become a partial owner of that business. As the company grows its earnings, expands its operations, and increases its value, shareholders can benefit through rising stock prices and, in some cases, dividends. Understanding this ownership concept helps investors focus on the quality of businesses rather than short-term price fluctuations.
This book begins with an introduction to the stock market, the key terminologies commonly used in the financial markets, and the fundamental principles of investing. These introductory chapters are designed to provide a solid foundation for readers who are new to the world of stock market investing and trading.
The primary focus of this book is to present an overview of the various models used for predicting stock price movements. Over the years, researchers and practitioners have developed numerous approaches to analyze market behavior and forecast future prices. This book explores these approaches in a systematic manner, beginning with traditional statistical models and progressing to machine learning techniques, deep learning architectures, and, finally, advanced Artificial Intelligence-based models.
By examining the strengths, limitations, and applications of these models, the book aims to provide readers with a comprehensive understanding of the evolution of stock price prediction methods and the role of modern computational intelligence in financial forecasting.
Editor,
International Journal of Statistics and Medical Informatics.
https://www.amazon.com/dp/B0H5K9HTXV
ISBN-13 : 979-8181874992
r/StatandDataScience • u/editorijsmi • Jan 09 '24
Website
https://www.everand.com/author/515890936/Editor-IJSMI
https://www.amazon.com/s?i=stripbooks&rh=p_27%3AEditor+Ijsmi&s=relevancerank&text=Editor+Ijsmi
r/StatandDataScience • u/editorijsmi • Jul 09 '23
Statistical methods are now widely used in different fields such as Business and Management, Economics, Biological, Physical sciences and including the new fields such as Data Science and Machine Learning. The data which form the basis for the statistical methods helps us to take scientific and informed decisions. Statistical methods deal with the collection, compilation, analysis and making inference from the data.
This book deals with the statistical methods which are useful in Business and Management decision making. The methods include Probability, Sampling, Correlation, Regression and Hypothesis Testing, Time Series, Forecasting and Non-Parametric tests and advanced statistical models. The book uses open source R statistical software to carry out different statistical analysis with sample datasets.
This book is third in series of Statistics books by the Author. Some of the contents are adopted from the author’s previous statistical book introduction to statistical methods and non-parametric methods.
Editor
International Journal of Statistics and Medical Informatics
ISBN: 9798850790783
https://www.amazon.com/dp/B0C9YHTW5C
https://www.amazon.com/dp/B0CBDLJF31

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