Deep Learning Market to Further Develop with TadGAN

  • Analysis
  • 07-January-2021

A time series refers to record of calculations taken repeatedly over time. It can monitor a system’s short-term blips and long-term trends. Such as keeping track of new daily cases with Covid-19 curve and follow atmospheric Co2 concentration from the year 1958 with Keeling curve. In today’s world, time series are gathered in all kinds of places, even turbines and satellites. All these technologies have sensors that keep time series to know how they are functioning.

However, the problem arises when one needs to keep track of these time series’. It is a challenging task for a satellite operator to analyze a string of high-temperature readings and determine if the satellite is about to overheat or if it is a trivial fluctuation.

 To overcome this hurdle, a group of researchers has developed a new deep-learning-based method. It would be able to flag anomalies in time series data. This approach is called “TadGAN.” The tests have concluded that it has surpassed contending methods and may help operators discover and respond to significant changes in a range of high-values.

The group has developed a new method of flagging anomalies in time series data through Deep Learning. Their approach, called TadGAN, outperformed competing methods. It may help operators detect and respond to significant changes in a variety of high-value systems like computer server farms buzzing in a basement, satellites flying through space, etc. This new method may further boost the Deep Learning Market as it will increase the use of deep learning techniques in different sectors.

Satellite is an intricate system and receives a glut flood of time series from its communications satellites, which is around 30,000 unique parameters per spacecraft. Hence, time series analysis needs to be automated, as human operators working in the control room can only keep track of a tiny portion of those time series and blink past most of it on the screen. They rely on an alarm system to highlight out-of-range values.

There are two obstacles in using the deep learning method to analyze time series. In case it fails to detect a variance, the team could miss the chance of fixing a problem. Moreover, it also would not be suitable if it sends out false alarm every time there’s a noisy data point. Human operators will waste valuable time if they constantly have to check on a false algorithm. Hence, there needs to be a balance so that either of the problems does not occur.

Researchers used deep-learning systems called generative adversarial networks (GANs), often used for image analysis. Their model differentiates between average data points and abnormal ones. It is done by checking discrepancies between the real-time series and false GAN generated one. However, only using GAN would generate several false positives. So the team also used an algorithm with GAN, known as “autoencoder,” which can miss real anomalies. Combining these two deep learning techniques enabled researchers to create an anomaly detection system with perfect balance.

Tadgan is expected to serve different sectors as it develops and not just satellite companies. In the future, it may be able to monitor the performance of computer applications like Zoom, Slack, Github, etc.
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