Evaluation study on training of 100m sprint athletes based on improved D-S evidence theory

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1 Avalable ole Joural of Checal ad Pharaceutcal Research, 0, 6(:-6 Research Artcle ISSN : CODEN(USA : JCPRC Evaluato study o trag of 00 sprt athletes based o proved D-S evdece theory WU Jag Zheag Idustry Polytechc College, Zheag Shaoxg, Cha ABSTRACT I order to evaluate the trag of 00 sprt athlete, the proved D-S evdece theory s appled t. Frst, the basc characterstcs of 00 sprt are aalyzed. Secod, the basc theory of D-S evdece theory s studed. The, the aalyss steps of proved D-S evdece theory are establshed. Fally, a case study of evaluato for 00 sprt trag athletes s carred out based o proved D-S evdece theory, ad results show that ths evaluato results ca obta correct evaluato results. Key words: proved D-S evdece theory; evaluato; 00 sprt INTRODUCTION Wth the developet of oder sports scece, the sprt level proves costatly, ad the athletes trag ethod of 00 sprt s developed cotuously wth ovato. Chese 00 sprt our atoal 00 sprt has lagged the world. Although there are ay reasos for poor sprt level Cha, but the poor sprt level has soethg wth poor physcal fucto of athlete ad recovery capablty after the trag []. The trag s port factor for provg the speed ad edurace of the athlete. Effectve trag ethod ca prove the acheveet of 00 sprt. Therefore t s ecessary to evaluate pertece, scece ad ethod of 00 sprt trag, ad the utlzato of physcal fucto of 00 sprt athlete ca be proved, the coprehesve athletc ablty of 00 sprt athlete ca be exploted. The a attack way of 00 sprt athlete ca be cofred, ad the physcal fucto of 00 sprt athlete ca be used. The the good trag ethod ad syste ca be establshed. Therefore t s sgfcat for 00 sprt to costruct the evaluato odel ad stadard of trag, the trag level ca be evaluated correctly, ad the exstg probles trag ca be proved. A good evaluato ethod ust be used. Recetly there are ay evaluato ethods, such as coprehesve fuzzy evaluato, expert vestet ethod. These evaluato ethods ca get a coprehesve evaluato result, but the certaty ad ucertaty of result ca ot be easured, therefore they have ther lts. Iproved D-S evdece theory s used evaluatg the athletes trag of 00 sprt. Tradtoal D-S evdece theory s a ucerta reasog ethod, whch ca grasp the ucertaty of proble relatve to tradtoal probablty theory []. Ad t has strog processg ablty for ucerta forato, whch suts for evaluatg the proble wth hua factors ad ucertates. Of course tradtoal D-S evdece theory stll has defcecy, whe the serous coflcts happe aog evdeces, ad the evaluato results ca ot be appled. I order to deal wth the dsadvatages of tradtoal D-S theory, a proved D-S evdece theory s used ths research. Basc characterstcs of 00 sprt 00 sprt s a track ad feld evet wth shortest dstace, fastest rate ad greatest testy. The essetal feature of 00 sprt s lsted as follows: t s a rollg ad traslatg oveet wth hgh speed the axle of hp. The kck s a exteso of hgh speed rollg oveet. The hp oveet s a crtcal part of horzotal accelerato for athlete, ad therefore the scetfc, deal ad perfect 00 sprt techque should have strog hp uscles, rapd swg speed, ad good speed of pawg oveet []. Durg the processo of trag of 00 sprt, the sx

2 WU Jag J. Che. Phar. Res., 0, 6(:-6 stake way of rug should be avoded whch coclude slouchg ru, stoachg ru, sttg ru, upg ru, shakg ru ad curvg ru. 00 sprt trag of athlete should be carred out fro speed, techque ad stregth. Speed, techque ad stregth are closely coected, speed s core, stregth s bass, ad techque s carrer. Dfferet specal speed ust requre dfferet specal techque ad stregth. Speed cocludes accelerato ablty, speed-edurace, absolute velocty, oveet speed, speed ablty []. For dfferet speed, the correspodg trag ca be appled. Specal techque cocludes optal specal exercse, the trag techque that ca prove swg apltude, the trag techque that ca prove swg ablty. Stregth cocludes stregth of hp uscle, stregth of lubar uscle, stregth of lower lbs, the evaluato dex syste of 00 sprt trag s establshed, whch s show table. Table evaluato dex syste of 00 sprt trag Obect level frst level secod level sport qualty basc physcal qualty specal physcal qualty physcal fucto axu oxyge uptake dastolc pressure systolc pressure heart rate Trag effect of 00 sprt speed of athlete accelerato ablty speed-edurace absolute velocty oveet speed speed ablty specal trag techque optal specal exercse trag techque of swg apltude trag techque of swg ablty stregth of athlete stregth of hp uscle stregth of lubar uscle stregth of lower lbs Iproved D-S evdece theory s used to carry out data fuso, ad the evaluato effcecy of 00 sprt ca be proved. Basc theory of D-S evdece theory D-S evdece theory s put forward by A.P. Depster 976, ad s exteded ad developed for the ext te years. ( Basc cocepto I D-S theory, a saple space s kow as detfcato frae, whch s expressed as Θ, t s a lted collecto of possble aswers about proposto, Θ s expressed as follows []: Θ = θ, θ, θ, θ ( where { θ ( s a sgleto of Θ. satsfes the expresso (, s basc beleve assget o Θ, ad (A s a basc beleve assget of A. If collecto fucto : Θ [0,] A Θ ( φ = 0, ( A = ( Set Θ as detfcato frae, : Θ [0,] s a basc beleve assget o Θ, the valdty fucto s expressed as follows [6]: A B A ( Bel ( = (, Θ B A If ( A > 0 fucto Bel., the A s focal eleet of valdty fucto Bel, all focal eleets are aed as core of valdty ( Cobato of double valdty fuctos Settg Bel ad Bel as two valdty fuctos o the sae detfcato frae Θ, ad A, A,, A relatg basc beleve assgets, the correspodg focal eleets are defed as are the L ad

3 WU Jag J. Che. Phar. Res., 0, 6(:-6 B, B,, L B respectvely. If expresso ( s satsfed, the let = Y. & K = ( A ( B < A IB ( The valdty fucto defed by s kow as drect su of Bel ad expressed as follows: Bel, ad the forulato of s ( A = ( A ( B ( A A I B = A ( Cobato of ultple valdty fuctos Cobato of ultple valdty fuctos ca be copleted through ultple cobatos of double valdty fuctos based o the followg characterstcs: Y & = Y& (6 & = (7 Exchageablty: Assocablty: Y Y & Y( & Y& ( Aalyss steps of proved D-S evdece theory Tradtoal D-S evdece theory s effectve forato fuso of ultple data, but whe the evdece forato hghly coflct, the evaluato cocluso cotradcts tuto, therefore the tradtoal D-S evdece theory s proved. The proved D-S evdece theory s appled evaluatg the athlete trag of 00 sprt. The followg atheatcal sgs are defed: S ( =,, s th proect, ad evaluato dex, ad the correspodg evaluato steps are lsted as follows : Step : The ass fucto s costructed. Score collecto s, s, s, { s S =, I ( =,, s th s represets excellet, s represets good, s represets edu, s represets poor. Ad the levels score collecto s defed, whch s show table. Table Defto table of score collecto S 6 7 s s s s E = { e6, e The evaluato level s gve accordg to fuzzy coet, whch s expressed as e, e, e, e, e, represets pot, e represets pot, e represets pot, e represets pot, e represets pot, e 6 represets 0 pot. Ad the correspodg evaluato level s show table. Table Defto table of evaluato level collecto E 6 7 e e e e e e e Accordg to table ad table, the evaluato level ca be reflect o the characterstc value based o axu ad u operato, ad the basc valdty grade assget of characterstc value of every evaluato dex s calculated accordg to the followg expresso [7]:

4 WU Jag J. Che. Phar. Res., 0, 6(:-6 7 (, A k * = ( sk = 7, ( k =,,, ; =,,,,,6, 7 (, = A k (8 * where deotes u operato, deotes axu operato. 0 ( s, oralzato processg s carred out, whch s expressed as follows: * ' ( sk ( sk = (9 ( s = * k The orgal ass fucto s obtaed accordg to the expresso (6 ad (7. Step : The evdece cobato s carred out. The ass fuctos ( s are cobed for all evdeces, ad the coprehesve valdty of every evaluato dex s obtaed. Step : The coprehesve score s calculated. Accordg to the defto of characterstc collecto, the score of s s equal to.0, the score of s s equal to., the score of s s equal to.0, the score of s s equal to 0., ad the coprehesve score of every dex s calculated accordg to the followg expresso [8]: x ( I ( I ( I ( I = ( s. ( s.0 ( s 0. ( s (0 Step : The approxato degree of every proect s calculated. Accordg to the coprehesve score, the orgal data atrx s obtaed, whch s defed as X = { x. Ad the weghtg decso atrx D = { d s calculated by the followg expresso: k d = ω x ( where ω deotes the weght of th evaluato dex. The the deal proect V ad egatve deal proect V are cofred accordg to the followg expressos: V { v ( = V = { v ( where v = v, v, v, v = v, v, v. ax( ( The dstace betwee the every proect ad V ( V s calculated accordg to the followg expressos: δ = ( v v,,, = = δ = ( v v,,, = ( = ( The the approxato degree s calculated accordg to the followg expresso:

5 WU Jag J. Che. Phar. Res., 0, 6(:-6 A δ = δ δ, =,, (6 Fally the proect s evaluated accordg to the sequece of approxato degree. RESULTS AND DISCUSSION I order to verfy the effectveess of the proved D-S evdece theory, sprt athletes are used to carry out trag evaluato. Ad the trag plas used to be evaluated. Ad the evaluato dexes are appled table. The data aalyss s carred out by ATLAB prograer. The expresso (8 ad (9 s appled to ake the fuzzy coet ad the characterstc value havg the oe to oe relatoshp, ad the orgal ass fucto s obtaed, whch s show table. Table Orgal ass fucto Evaluato level (s,s,s,s (0.9, 0.086,0.000,0.000 (0.0, 0.00,0.0,0.000 (0.08, 0.67,0.0,0.000 (0.000, 0.,0.680,0.7 (0.000, 0.000,0.0,0.0 6 (0.08, 0.67,0.0,0.000 Usg the evaluato dex sport qualty as exaple, the weghts of three evdeces obtaed fro the experts are 0.7, 0., 0. respectvely, ad the correspodg valdty degrees are, 0.8, ad 0. respectvely. The the fal ass fucto of three evdeces s show table. Table Fal ass fucto of evaluato dex sport qualty evdece (s,s,s,s,φ evdece (0.000, 0.60, 0.690, 0.0, evdece (0.08, 0.0, 0., 0.000, 0.68 evdece (0.0, 0.0, 0.000, 0.000, 0.00 The ass fucto of other evaluato dexes s obtaed accordg to the sae calculatg process. Ad the coprehesve valdty of evaluato dex to characterstc value based o the cobato of evdeces, the calculatg results are show table 6. Table 6 Coprehesve valdty of evaluato dexes for trag of 00 sprt athletes evdece (s,s,s,s,φ sport qualty (0.000, 0.8, 0.0, 0.9, physcal fucto (0.000, 0.7, 0.6, 0.000, speed of athlete (0.08, 0.680, 0., 0.00, specal trag techque (0.06, 0.7, 0.0, 0.000, stregth of athlete (0.000, 0.7, 0.8, 0.08, The coprehesve score of evaluato dexes are calculated accordg to expresso (0, ad the correspodg results are show the followg atrx: X = { x.0.0 = The weghtg decso atrx s calculated accordg to the expresso (, ad the results are show the followg atrx:

6 WU Jag J. Che. Phar. Res., 0, 6(:-6 D = { d = The the deal proect V ad egatve deal proect correspodg calculatg results are show as follows: V are calculated accordg to expresso (, ad the V = {0.9,0.668,0.68,0.896,0.8 V = {0.8,0.6,0.0,0.,0.7 Fally the approxato degree s calculated accordg to the expresso (-(6, ad the results are show table 7. Table 7 Approxato degree of trag plas trag pla approxato degree rakg Accordg to approxato degree, the trag pla s best for provg the acheveet of 00 sprt athletes, ad trag pla ca be appled the followg trag of 00 sprt. CONCLUSION Trag s a portat for provg the sport level of 00 sprt athletes, t ca ake the techque, stregth ad speed of athlete develop copletely, the the good acheveet ca be obtaed. The proved D-S evdece odel s appled evaluate the trag level of 00 sprt, t ca process the ucerta forato well, ad obta the correct evaluato results. REFERENCES [] DL Sh, DL A. Joural of x a physcal educato uversty, 008, (, [] X Q, SC Zhag. Appled Geophyscs, 0, 9(, [] A Hera, Heeberg. Iteratoal Joural of Drug Polcy, 0, (, 0-. [] A Habb, Shaba, E Rah. Joural of Hua Ketcs, 00, (, 9-. [] WJ a, W Xog, XD Luo. Lecture Notes Coputer Scece, 0, 78(, 97- [6] YJ Zhag, XY Deg, DJ We. Expert Systes wth Applcatos, 0, 9(, 6-6. [7] L Zhag, JW Lu, RC Wag. Joural o Coucato, 0, (7, [8] PB Wesz, VJ Frlette. Joural of Physcal Chestry, 960, 6 (,