This　paper　focuses　on　measuring　the　industrial　sector＇s　position　on　the　Global　Value　Chain　(GVC),　as　reinforcements　to　the　present　studies　on　international　trade.　We　firstly　reconsidered　the　length-related　and　position-related　measures　in　literatures　about　vertical　specialization　from　the　perspective　of　bibliometrics　and　econophysics.　Secondly,　the　inter-country　and　inter-sector　propagating　process　of　intermediate　goods　was　redefined,　resulting　in　the　concept　of　Strongest　Relevance　Path　Length　(SRPL)　based　on　Revised　Floyd-Warshall　Algorithm　(RFWA).　Thirdly,　enlightened　by　closeness　centrality,　we　introduced　two　new　SRPL-based　indices　to　measure　the　Interdependence　from　a　given　sector　to　all　its　upstream　and　downstream　sectors,　and　proposed　Relative　Upstreamness　Index　(RUI)　to　measure　the　relative　position　of　the　industrial　sector.　Finally,　these　indices　were　applied　to　the　empirical　analysis　of　the　global　economic　system　by　physical　statistics.　(C)　2019　Elsevier　B.V.　All　rights　reserved.