Thursday, July 10, 2025

From Turing to Trading: Understanding AI, Big Data, and Machine Learning in Economics



1. Alan Turing and the Turing Test (1950)

In 1950, Alan Turing published his seminal paper "Computing Machinery and Intelligence."

  • Turing Test (Definition of Artificial Intelligence):
    If a machine produces behavior indistinguishable from that of an intelligent human, it can be considered intelligent.

The Turing Test implies that agency—the capacity to make autonomous choices—is a prerequisite for intelligence. In other words, a decision must be made, whether by a human or a machine.

The Turing Test distinguishes between automata and machine intelligence. While an automaton facilitates human labor, it does not replace human decision-making.

Examples:

  • A cartridge-based coffee maker is an automaton: it requires human input.

  • A vending machine exhibits a higher degree of autonomy. However, this does not necessarily mean it would pass the Turing Test or be regarded as true artificial intelligence.


2. Big Data vs. Artificial Intelligence (AI): Key Differences

The key differences between Big Data and AI involve:

  1. Human Input/Action

  2. Autonomy

  • Big Data involves collecting and analyzing large datasets to enhance human decision-making.

  • AI is more autonomous—it can make decisions independently, without human input.

  • Overlap: AI often uses machine learning, which is also a component of Big Data analytics.

Key Distinction:

  • If a system analyzes data but requires human action → it falls under Big Data.

  • If a system analyzes data and acts independently → it qualifies as AI.

Examples:

  • A machine learning algorithm that recommends stock trades → Big Data.

  • A system that executes trades automatically → AI.


3. Machine Learning vs. Traditional Econometrics

  • Traditional econometrics aims to understand causal relationships between economic variables.

  • Machine learning (ML) focuses on prediction and performs well with complex, high-dimensional data (i.e., many variables or large datasets).

High-dimensional data:
Data sets with a large number of variables (regressors) relative to the number of observations.

Short Example:

  • Traditional Method: Uses simple models (e.g., linear regression) to explain how income affects spending.

  • ML Method: Analyzes vast and varied datasets—including text, images, and trends—to predict stock prices or house values more accurately.

Key Advantages of ML:

  1. Handles many variables and complex interactions more effectively.

  2. Works with diverse data types (e.g., text, images).

  3. Reduces prediction errors, improving forecast reliability.

  4. Enhances traditional econometric tools with greater accuracy.

ML is like using a powerful AI assistant instead of a basic calculator—it can detect patterns and generate insights beyond human capability.


4. Limitations of Machine Learning

  1. Low Interpretability (Hard to Understand):
    ML models may make accurate predictions, but their internal logic is often opaque.
    📌 Example: A bank’s ML model denies a loan, but the reason is unclear to both the applicant and the staff.

  2. Data Dependency:
    ML performs best with large datasets. Without sufficient data, results may be unreliable.
    📌 Example: A startup with limited customer data may struggle to make accurate ML-based sales forecasts.

  3. High Computational Cost:
    Training ML models often requires significant computing power and infrastructure.
    📌 Example: A company using deep learning for image recognition may need cloud computing services to handle processing demands. 

From Turing to Trading: Understanding AI, Big Data, and Machine Learning in Economics

1. Alan Turing and the Turing Test (1950) In 1950, Alan Turing published his seminal paper "Computing Machinery and Intelligence....