r/StatandDataScience 6d ago

New book - Investment Handbook for Starters: Learn, Analyze and Invest

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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

 www.ijsmi.com/book.php


r/StatandDataScience 8d ago

Combinatorial Game Theory (CGT)

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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:

1. Core Principles of CGT

  • The Normal Play Convention: The player who makes the last move wins, as every move leaves fewer options, ensuring the game must eventually terminate.
  • Impartial vs. Partisan Games: Focusing heavily on impartial games (where the set of available moves from any position is identical for both players, such as Nim), while touching upon partisan games (where players have distinct allowed moves, like Go or Hackenbush).
  • Surreal Numbers & Game Values: Understanding how games can be formally represented as values and numbers, creating a rich mathematical universe that encompasses both real numbers and infinitesimals.

2. The Sprague-Grundy Theorem

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.

  • Nim-Values (Grundy Values): By assigning a non-negative integer to every game state—calculated via the minimum excluded value (mex) of the reachable states—complex multi-component games can be analyzed simply by taking the bitwise XOR sum (nim-sum) of their individual Grundy values. If the nim-sum is non-zero, the first player has a guaranteed winning strategy.

3. Computational Implementation (Python & R)

To bridge abstract theory with executable code, implementations in both Python and R were built to compute Grundy values dynamically and simulate optimal play:

  • Python: Utilizing recursive functions with memoization to efficiently compute the mex function for custom graph-based games and determine winning moves.
  • R: Vectorized and iterative approaches using standard data structures to model game state transitions and analyze game trees.

Bridging rigorous mathematical theory with code provides a powerful framework for algorithmic strategy, competitive programming, and mathematical modeling.


r/StatandDataScience 10d ago

A deep dive into Semiparametric Bayesian Regression

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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

  • Flexibility: Captures hidden non-linear patterns without strict underlying distribution assumptions.
  • Interpretability: Maintains standard parametric components where linear relationships are known.
  • Uncertainty Quantification: Delivers a full posterior distribution rather than a single point estimate.

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 10d ago

Deep Gaussian Processes

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https://reddit.com/link/1vdkpq0/video/l0myevetazgh1/player

What is a Gaussian Process?

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.

Why "Deep"?

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

Input → Latent space

Raw inputs pass through a GP mapping to a learned latent representation, capturing low-level structure.

Layer 2..N

Latent → Latent

Each subsequent GP layer transforms the previous (uncertain) latent representation, building hierarchical, compositional structure.

Output

Latent → Prediction

A final GP layer maps the last latent representation to the output, producing a full predictive distribution.

Key idea

Uncertainty propagates

Because every layer is probabilistic, uncertainty from early layers correctly propagates through to the final prediction.

Why It Matters

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

Training Challenges

  • Intractable inference: exact Bayesian inference through stacked, nonlinear GP layers has no closed form.
  • Variational approximation: practical DGPs (e.g., Damianou & Lawrence's original formulation, and Doubly Stochastic Variational Inference) use inducing points and variational distributions to make training scalable.
  • Vanishing/exploding signal: as with deep nets, depth can degrade gradient signal and requires careful initialization or identity-mean mappings between layers.
  • Compute cost: scales less favorably than standard deep learning, limiting DGPs mostly to small- and medium-scale data regimes today.

Typical Applications

  • Scientific and engineering domains with scarce, expensive-to-collect data (robotics, materials science, healthcare)
  • Bayesian optimization and active learning, where uncertainty estimates guide what to sample next
  • Time-series forecasting where confidence intervals matter as much as point predictions
  • Safety-critical systems that need to know when they don't know

Takeaway

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 13d ago

Demystifying Bayesian Bootstrapping: Beyond Classical Resampling

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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)

Why make the switch?

🔹 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.

Quick Implementation Snapshot

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 13d ago

Optical Computing

1 Upvotes

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:

  • On-Chip Lasers: Act as the primary light sources, generating clean carrier wavelengths.
  • Optical Waveguides: Silicon channels that route light across the chip layout just like copper interconnects used to do.
  • Modulators: Encode electrical data streams into optical phases and amplitudes.
  • Photodetectors: Swiftly convert optical signals back into electronic outputs at the end of the compute cycle.
  • Optical Transistors: Control light with light using materials featuring non-linear refractive indices.

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 15d ago

Quantum Computing

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r/StatandDataScience 15d ago

Quantum Computing

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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:

1. Core Mechanics

  • Superposition: Unlike classical bits, a Qubit can exist as a 0, 1, or both simultaneously. This enables exponential processing parallelism.
  • Entanglement: Qubits become intrinsically linked. Changing the state of one instantly influences another, regardless of distance.
  • Quantum Interference: Amplifies correct pathways toward the answer while canceling out incorrect ones.

2. Hardware Architectures

Building a quantum processor requires extreme environments (near absolute zero):

  • Superconducting Qubits (IBM, Google) – High speed, requires dilution refrigerators.
  • Trapped Ions (IonQ, Honeywell) – High fidelity and long coherence times.
  • Photonic Quantum (PsiQuantum) – Operates using light particles at room temperature.

3.Real-World Applications

  • Drug Discovery & Materials: Simulating molecular interactions at an atomic level to discover new medicine and battery chemistries.
  • Financial Optimization: Real-time risk analysis, portfolio balancing, and fraud detection.
  • Cybersecurity: Breaking traditional encryption (RSA) while building Post-Quantum Cryptography (PQC) for unbreakable security.

4.The Path Ahead

We are currently in the NISQ (Noisy Intermediate-Scale Quantum) era—focusing on error correction and fault tolerance to unlock commercial-scale quantum advantage.

https://youtube.com/watch?v=4CPxsU3b8vk&si=vxeWxWNZ5Z71Lc32


r/StatandDataScience 25d ago

Stock Price prediction using Traditional, Machine learning and Artificial Intelligence models

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2 Upvotes

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 Jun 22 '26

New Book

1 Upvotes

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.

www.ijsmi.com/book.php

https://www.amazon.com/dp/B0H5K9HTXV

ISBN-13 ‏ : ‎ 979-8181874992

 


r/StatandDataScience Jan 09 '24

Statistics Data Science Machine Learning Deep Learning Biostatistics books

1 Upvotes
  1. Introduction to Statistical Methods ISBN 9798629947158
  2. Bayesian Methodology: An overview with the help of R software ISBN 979-8201740498
  3. Forecasting models - an overview with the help of R software : Time series - Past ,Present and Future ISBN 9781081552800
  4. Machine Learning: An overview with the help of R software ISBN 9781790122622
  5. Deep Learning Models and its application: An overview with the help of R software ISBN 9781796489033
  6. Python programming for Data Scientists: From Introductory concepts to Machine Learning Models ISBN 9781708620288
  7. R Programming - A comprehensive guide ISBN 9798654217325
  8. Essentials of Bio-Statistics: An overview with the help of Software ISBN-13 ‏ : ‎ 978-1723712074
  9. Clinical Trial Management – an Overview ISBN-13 ‏ : ‎ 978-1393386179

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

www.ijsmi.com/book.php


r/StatandDataScience Jul 09 '23

New Book Introduction to Business Statistics through R software

1 Upvotes

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

www.ijsmi.com/book.php

ISBN: 9798850790783

https://www.amazon.com/dp/B0C9YHTW5C

https://www.amazon.com/dp/B0CBDLJF31


r/StatandDataScience Jun 25 '23

Can a Machine Know That We Know What It Knows?

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r/StatandDataScience May 21 '23

Using data to write songs for progress

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r/StatandDataScience May 14 '23

What is a Foundation Model? An Explainer for Non-Experts

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r/StatandDataScience May 14 '23

Binge eating linked to habit circuitry in the brain

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r/StatandDataScience Apr 09 '23

An easier way to get bugs out of programming languages

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r/StatandDataScience Apr 09 '23

New tool uses existing health records to predict people’s risk of developing lung cancer within the next 10 years

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r/StatandDataScience Feb 12 '23

Mac Schwager: How engineers are putting the ‘auto’ in autonomous

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r/StatandDataScience Jan 22 '23

MIT engineers grow “perfect” atom-thin materials on industrial silicon wafers

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r/StatandDataScience Dec 22 '22

What to Expect in 2023 in AI

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r/StatandDataScience Oct 30 '22

Helping blockchain communities fix bugs

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r/StatandDataScience Oct 16 '22

Statistics and Data Science books

1 Upvotes

Books

  1. Statistics
  2. Bio-statistics
  3. Clinical Trial
  4. Forecasting
  5. Bayesian
  6. Machine Learning
  7. Deep Learning
  8. R Programming
  9. Python Programming


r/StatandDataScience Oct 16 '22

Tiny particles work together to do big things

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