Retraction Note: Speech to speech interaction system using Multimedia Tools and Partially Observable Markov Decision Process for visually impaired students.

This document is a retraction note for an article titled "Speech to speech interaction system using Multimedia Tools and Partially Observable Markov Decision Process for visually impaired students." The article has been retracted by the publisher due to concerns regarding compromised editorial handling and peer review process, inappropriate or irrelevant references, and not being in scope of the journal or guest-edited issue. The authors have not responded to correspondence regarding this retraction. Springer Nature, the publisher, remains neutral with regard to jurisdictional claims and institutional affiliations. [Extracted from the article]