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Big Data Analysis and Law: A New Dimension in Decision-Making Processes

In our digitalising world, vast amounts of data are generated every second. Court rulings, legal texts, case files, contracts, legal correspondence and even social media data… When analysed correctly, this mountain of information can become an invaluable treasure trove for the legal world. This is where ‘Big Data’ analysis comes into play. Big Data refers to data sets that are too large and complex to be analysed using traditional data processing methods. In the legal sector, Big Data analysis is creating a veritable revolution by enabling lawyers and judges to make more accurate, data-driven and strategic decisions. In this article, we will examine how Big Data analysis is used in law and how it takes decision-making processes to a new level.

How is Big Data Used in the Legal Sector?

Big Data analytics is primarily used in the legal field to make predictions about the future based on historical data and to gain in-depth insights into the current situation.

Case Outcome Prediction

This is perhaps the most exciting area of application. Analytical platforms analyse thousands, or even millions, of past court decisions. By inputting the specific characteristics of a case (case type, relevant court, judge, the parties’ solicitors, evidence presented, etc.) into the system, they can statistically predict the likelihood of that case being won or lost. This helps solicitors make more informed decisions when determining litigation strategies, evaluating settlement offers, or advising their clients.

Judge and Court Analysis

Big Data can be used to analyse the types of decisions a particular judge or court has made in similar cases. For example, it is possible to determine how a judge tends to interpret a specific section of the law or which types of evidence they place greater weight on. This information enables lawyers to tailor their arguments and submissions to the expectations of that judge or court.

Legal Strategy Development

By analysing the opposing counsel’s strategies, arguments and success rates in past cases, a lawyer can formulate their own defence or offensive strategy more effectively. It can be demonstrated, based on data, which arguments have been successful in the past and which have not been accepted by the courts.

Risk Management for Corporate Legal Departments

Companies can identify potential future risk areas by analysing their past cases and legal disputes. For example, by determining which types of contracts most frequently lead to litigation or which business units face more legal issues, they can take preventive measures.

Data Privacy and the Legal Framework The foundation of Big Data analysis lies in the processing of a wide variety of data, including personal data. This raises issues regarding data privacy and the protection of personal data. The Personal Data Protection Act No. 6698 (KVKK) sets out strict rules for the processing of personal data.

Law on the Protection of Personal Data – Article 4

(2) The following principles must be adhered to in the processing of personal data: a) Compliance with the law and the principles of good faith. b) Accuracy and, where necessary, up-to-date status. c) Processing for specific, explicit and legitimate purposes. d) Processing that is relevant, limited and proportionate to the purpose for which it is processed. e) Retention for the period prescribed by relevant legislation or as necessary for the purpose for which it is processed.

For this reason, when conducting Big Data analysis, documents containing personal data—such as court decisions—must be anonymised, and the principles set out in the Personal Data Protection Law (KVKK) must be strictly adhered to. Otherwise, whilst seeking to achieve a legal benefit, one may face serious legal and criminal penalties.

Big Data and the Future of Justice Big Data analysis holds the potential to help the field of law evolve from subjective interpretations towards a more objective, data-driven approach. However, the risks associated with this technology must not be overlooked. For example, algorithms learning and reproducing biases (such as gender or race) present in historical data can give rise to the issue of ‘algorithmic bias’. This can lead to unfair outcomes. Consequently, it is of critical importance that Big Data systems are transparent, auditable and fair. As emphasised in a decision by the Competition Authority, data-related concerns create complex areas requiring intervention from multiple legal fields, such as competition law.

Competition Authority Decision – 24-45/1053-450

…areas that are open to intervention by multiple branches of law, such as competition law. Various legal disciplines can address a data-driven legal concern using their own intervention tools, and these interventions may serve the different objectives of the relevant legal disciplines…

Competition Authority, File No: 2023-1-028, Decision No: 24-45/1053-450, 2024

Big Data analysis offers legal professionals a level of foresight and strategic depth they previously lacked. Decisions no longer need to rely solely on intuition, experience or a limited number of precedent cases. Legal professionals leveraging the power of data can make more accurate predictions, manage risks more effectively and provide higher quality services to their clients. However, whilst utilising this power, it is of vital importance to exercise the utmost care regarding issues such as data privacy, ethical standards and algorithmic fairness, so as not to deviate from the fundamental principles of justice. When used correctly, Big Data will be a powerful beacon illuminating the future of the law.