The forecasting and inventory models presented in this chapter are not new; they have been recommended for years by statisticians and operations researchers.
( ( ( ( ( ( The ( forecasting ( and ( inventory models ) ) ) ) ( presented ( in ( this chapter ) ) ) ) ( ( are not ) new ) ) ; ) ( they ( have ( been ( ( recommended ( for years ) ) ( by ( ( statisticians and ) ( operations researchers ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NP (DT The) (NN forecasting) (CC and) (NN inventory) (NNS models)) (VP (VBN presented) (PP (IN in) (NP (DT this) (NN chapter))))) (VP (VBP are) (RB not) (ADJP (JJ new)))) (: ;) (S (NP (PRP they)) (VP (VBP have) (VP (VBN been) (VP (VBN recommended) (PP (IN for) (NP (NNS years))) (PP (IN by) (NP (NP (NNS statisticians)) (CC and) (NP (NNS operations) (NNS researchers)))))))) (. .)))
Statisticians and operations researchers have been pushing these inventory models for a very long time.
( ( Statisticians ( and ( operations researchers ) ) ) ( ( have ( been ( pushing ( ( these ( inventory models ) ) ( for ( a ( ( very long ) time ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Statisticians) (CC and) (NNS operations) (NNS researchers)) (VP (VBP have) (VP (VBN been) (VP (VBG pushing) (NP (NP (DT these) (NN inventory) (NNS models)) (PP (IN for) (NP (DT a) (ADJP (RB very) (JJ long)) (NN time))))))) (. .)))