Artificial intelligence is changing the world, helping to streamline repetitive, mundane tasks for business professionals, freeing up human workers to focus their time, money, and valuable brainpower on tasks of a much higher caliber.

For attorneys, one of the best things to come out of this AI revolution has been the introduction of technology-assisted review.

Acting as a life raft in a tumultuous sea of digital information, technology-assisted review (TAR) or computer-assisted review (CAR) works in tandem with human review teams to expedite basic, repetitive tasks that routinely bog down the document review process.

But what exactly is technology-assisted review? How is it changing the legal landscape? And what is Veritone’s role in all of it?

We’re glad you asked.

Technology Assisted Review: 101

TAR is a broad term that refers to the use of complex, machine learning software to streamline e-discovery processes, which helps teams complete tasks with greater speed, efficiency, and accuracy.

To accomplish this, TAR works in tandem with human reviewers. Here, machine learning software applies human directives to digital information to expedite electronic discovery. Without human input, TAR could not function, essentially making it a computerized assistant for a more automized workflow.

TAR is the next step in document review evolution, and for law firms and review teams, it couldn’t have come at a better time.

Why Do We Need Technology Assisted Review (TAR)?

Unfortunately, the brilliant, technological advances that have propelled humanity into the modern era have had the dual effect of both helping and hurting the legal industry—in particular, the human reviewers conducting electronic discovery.

For example, computers have all but eliminated the need to process, filter, and organize information by hand. Now, attorneys can store everything in neat, digital folders, which are kept in clouds, and can be easily accessed, copied, shared, and distributed between team members with the click of just a few buttons.

However, those same processes also make the production of digital information that much easier, and with the pool of unstructured ESI increasing faster than reviewers can keep up with, humanity’s digital footprint is turning e-discovery into a huge problem child for document review. This is where TAR comes into play.

TAR’s E-discovery Debut

In early TAR models, a human coder used test documents to “teach” AI software how to recognize and label documents.

This process began with a human coder, who would apply search parameters to a sample section of the review’s most relevant content. Once coded, test documents would then be fed into the A.I. learner software, which—depending on the model—would then code documents in one of two ways:

  • Simple Passive Learning (SPL): Here, the learner used input parameters to code every single item in a review as either relevant or not relevant, with attorneys manually rechecking everything for accuracy, once the program was through.
  • Simple Active Learning (SAL): Unlike a passive learner, an active learner wouldn’t just complete basic coding, but would also submit documents back to attorneys for review, choosing the least identifiable content first, so that the learner gained more understanding as the review progressed.

SAL and SPL are both examples of “predictive coding” since machine learning software uses coding parameters to “predict” what will be most relevant to a review.

The Problems With SAL and SPL

Unfortunately, these early TAR models proved frustrating for users, because they often provided inaccurate, head-scratching results.

For developers, this was a conundrum, since early TAR models had proved to be actually quite effective during test reviews, outperforming human coders more than half of the time. After studying the issues, they soon realized that it wasn’t so much a problem with the programs, as it was an issue of human perception.

Unfortunately, in a predictive coding scenario, the differing perspectives of human coders unintentionally ended up shifting the direction of a search over time, producing those weirdly frustrating results for the learner’s human counterparts.

However, with improved designs, and the implementation of a continuous active learning (CAL) model, things are looking up for modern TAR programs.

Modern TAR Solutions

Recent updates in AI software have produced far better solutions to eDiscovery’s problems than simple active and passive TAR learners. One such solution is the introduction of a model known as continuous active learning (CAL).

Unlike e-discovery conducted with SAL or SPL, a CAL-driven document review needs very little babysitting. This is because CAL software is self-learning.

In a CAL review, AI software uses its input parameters to begin coding everything it can identify, while simultaneously feeding its reviewer the information it can’t. As human reviewers code and return this data back to the system, CAL programming uses this information to make self-improving adjustments to its algorithms, enhancing its own review accuracy without needing any further input.

CAL learning models virtually eliminate the need for a second review, since, by the time the TAR software has stopped learning, the review is complete. These models are quickly becoming a must-have in the next generation of TAR software, and Veritone’s one-of-a-kind flagship, aiWARE, is one such program.

Veritone aiWARE

Unlike TAR systems of the past, Veritone aiWARE is the first of its kind to unify hundreds of the best AI machine learning models under a single, easy-to-use platform.

The unification of these tools under one umbrella makes the computer-assisted review a breeze. With aiWARE, attorneys have access to hundreds of natural language processing engines, in multiple languages, allowing them to transcribe, filter, reduce, and categorize information in any digital medium, imaginable—all without the need for a highly technical, specialized workforce.

Using Veritone Illuminate—a customized, early case assessment application powered by aiWARE—unstructured ESI media can then be transcribed, redacted, and organized using powerful keyword and phrase searches. Thus enabling attorneys to uncover early case insights and receive actionable results in near real-time speeds, helping firms to shorten their estimated e-discovery times by as much as 99%.


With aiWARE, Veritone addresses the limitations of previous TAR software, offering attorneys a wide array of multi-functional tools that can be used to eliminate the biggest hurdles in document review—and, more specifically, the growing leviathan of unstructured ESI.

Using TAR to Tackle Unstructured Data

Once upon a time, several pairs of 20/20 vision and a handful of good Sharpies were all a legal review team needed to process evidence, but today’s world is a different beast entirely. Society’s technological leaps have resulted in an unprecedented uptick in unstructured data that has expanded eDiscovery to include photos, videos, call audio, CCTV footage, live streams, and so much more.

To learn more about how Veritone’s solutions for legal teams, such as Veritone Evidence, iDentify, Illuminate, and Redact, reach out to a team member today.