In this kind of applications, the underlying data distribution changes over time, and such changes often make the model built on old data inconsistent to the newly arrived data.
Face recognition (FR) systems are exposed to videos captured under various operating conditions, and, since data distributions change over time, face captures diverge w.r.t.
The distribution of inclination and declination data over the past 50 ka is shown in Figure 3. Figure 3 Distributions of archeological and volcanic data over the past 50 ka. a-d) Data distribution through time in 500 year bins comparing archeological and volcanic sources for (a) all data, (b) intensity, (c) inclination, and (d) declination. a-d
Summarizing, we have a classification problem which consists of a data stream where few instances are labeled and data distribution may change over time.
Classifiers operating in a dynamic, real world environment, are vulnerable to adversarial activity, which causes the data distribution to change over time.
Another challenging issue associated with the high velocity is that data are often nonstationary [13], i.e., data distribution is changing over time, which needs the learning algorithms to learn the data as a stream.
We have provided in vivo data using CT imaging of CSF distribution over time, which indicates that the primary route of CSF drainage in young and aged rats is via the spinal and olfactory lymphatics, and that drainage into the sagittal sinus arachnoid granulations plays at most a minor role.
We also consider an offline mode for data flow, where the lists of recognition states are transferred over network that is demanded by remote request or periodically uploaded to data distribution server by time period or buffer size limit.
The proliferation measurements were reproducible for all cell types although the distribution over time had distinct patterns due to different multiplication rates (data not show).
Fig. 19 Authors's gender distribution over time.
