IEEE Computational Intelligence Magazine - February 2021 - 51

using three approaches, such as hypothesis-based clustering,
data interpolation, and model interpolation.
B. Lifelong Learning and Formation
of a Hierarchical Structure

Inspired from the lifelong learning capability of biological
intelligence and systems [16], we observe that both generaliza-

tion and specialization capabilities are involved in building a
large-scale distributed learning system. As is the case in any
form of biological intelligence, we observe a continual developmental process: from stem cells to complex structures with
multiple functionalities, such as the human brain. For example,
in humans, the learning process consists of many stages such
as newly born, childhood, and grown-up. A newly born stage

Global Complex Task
Federation
(Board of Directors)

Joint Task 2

Joint Task 1
Regional
Director 1

Joint Task 3
Regional
Director 3

Regional
Director 2

Specialist 1.1

Specialist 2.1

Specialist 3.1

Specialist 1.2

Specialist 2.2

Specialist 3.2

Specialist 3.3

Specialist 1.3

Global Learning Task

Federation

Joint Learning Task 1

Joint Learning Task 2

Joint Learning Task 3

Group 2
Representative

Group 1
Representative

Group 3
Representative

Data

Data

Data

Data

Data

Data

Data

Data

Learning Agents

FIGURE 1 Analogy of a hierarchical distributed learning system.

FEBRUARY 2021 | IEEE COMPUTATIONAL INTELLIGENCE MAGAZINE

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