{"63648":{"#nid":"63648","#data":{"type":"event","title":"The Optimal Control Limit of a G-EWMAG Control Chart","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003ETITLE:\u003C\/strong\u003E\u0026nbsp; The Optimal Control Limit of a G-EWMAG Control Chart\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ESPEAKER:\u003C\/strong\u003E\u0026nbsp; Chang Kang\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EABSTRACT:\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EThe control chart is a widely used statistical process control (SPC) tool \nthat detects any process change and plays an important role in \nhigh-quality processes. In this paper, we design G-EWMAG control chart \nwhich is sensitive to both small and large shifts. G-EWMAG control chart \ncombines G control chart with EWMAG control chart. The G control chart is \nbased on a plot of the G statistic designed for quality control using \nattribute data. There is a drawback in G control chart. When it is applied \nto high-quality processes, it performs poorly in detecting small shifts. \nOn the other hand, EWAMG control chart which apply the EWMA technique with \nattribute data to G statistics can quickly detect small shifts. G-EWMAG \ncontrol chart have the ratio which represent the combination ratio of G \ncontrol chart and G-EWMAG control chart. A large ratio makes the G-EWMAG \ncontrol chart sensitive to detecting large shifts. On the other hand, a \nsmall ratio makes it sensitive to detecting small shifts. But problems \narise when the G-EWMAG control chart has an ratio of 1. In this case, a \nslight numerical difference in average run length (ARL1) between EWMAG and \nG-EWMAG appears to exist when detecting small shifts. We suggest optimal \ncontrol limits for designing the G-EWMAG control chart which is sensitive \nboth large and small shift for use in high-quality processes.\u003C\/p\u003E\u003Cp\u003EJoint work with Jae-Won Baik, Hae-Woon Kang and Min Song.\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"The Optimal Control Limit of a G-EWMAG Control Chart"}],"uid":"27187","created_gmt":"2011-01-18 10:45:14","changed_gmt":"2016-10-08 01:53:48","author":"Anita Race","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2011-01-21T10:00:00-05:00","event_time_end":"2011-01-21T11:00:00-05:00","event_time_end_last":"2011-01-21T11:00:00-05:00","gmt_time_start":"2011-01-21 15:00:00","gmt_time_end":"2011-01-21 16:00:00","gmt_time_end_last":"2011-01-21 16:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"1242","name":"School of Industrial and Systems Engineering (ISYE)"}],"categories":[],"keywords":[],"core_research_areas":[],"news_room_topics":[],"event_categories":[],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}