background lumbar plexus block (lpb) is one of the anesthetic options in the elderly patients undergoing hip surgeries. lpb could be safe because it targets somatic nerve in psoas region. effectiveness of lpb is attributed to the sufficient analgesia provided intraoperatively as well as postoperatively. adequate muscle relaxation and immobility during surgery refers to its acceptability. object...

We explore two themes in formal learning theory. We begin with a detailed, general study of the relationship between the generalization error and stability of learning algorithms. We then examine ensemble-based learning from the points of view of stability, decorrelation, and threshold complexity. A central problem of learning theory is bounding generalization error. Most such bounds have been ...