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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
( x' g: V$ L3 p6 P/ K7 i9 f& sto do-business ( p5 J6 r4 _; T5 u- R0 H
rt random 360: b9 V) n# ^1 }+ k! g
fd 1
3 d! @' s3 W, H$ ~4 z% l% { ifelse(other turtles-here != nobody)[0 x! u* q* O2 \+ B: |3 h9 q
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.7 ~. o7 G8 R9 Z) ?- X* K- R
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' u. k, V: I0 ?' l0 h+ S6 q( b   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  Y$ k& e6 ?+ n6 v   set [trade-record-one-len] of self length [trade-record-one] of self
7 D, v  q7 `$ x1 V6 _7 p, d% r   set trade-record-current( list (timer) (random money-upper-limit))9 ~9 q* A9 f: r7 @( n. {2 k6 A

, ^  z, g6 _0 G; l7 n5 A问题的提示如下:
8 j$ n, ]( @" t8 m6 a  P& o
- n6 |- h7 n! U3 g6 u4 i2 Y$ z! @error while turtle 50 running OF in procedure DO-BUSINESS
& t* a0 _5 w4 c. W3 e, O  called by procedure GO0 P' A9 t4 m7 A% }" M$ z& v
OF expected input to be a turtle agentset or turtle but got NOBODY instead.6 S8 [' a+ C- Z1 _% Y0 Z  r. e' P! K% \
(halted running of go)% R+ ~  Y5 I' P; Q

- y/ ?7 R1 R$ }3 X7 D  U6 p$ L这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
% x* O0 `; Y& W9 W另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教- B% ^* }5 E$ E8 T, G. t
globals[. t, `# d  o+ @( ]
xmax
# p$ [+ [3 ?- S- R1 w4 k0 bymax
& l: U# `3 y0 Q5 A' u+ D; d- T: Fglobal-reputation-list! J. s* e  ?6 n1 X
- V! v0 i" H6 {+ I
;;
每一个turtle的全局声誉都存在此LIST, ]# |/ E  K9 S+ Z1 ~3 O
credibility-list
9 ^0 A- I1 Q$ ]" @( P% p( O$ U1 `* M;;
每一个turtle的评价可信度! w5 s9 q9 w  p# F" a* G( U
honest-service
3 U# E4 [: S* T6 g2 s2 F# ^unhonest-service
2 K, r* x3 F7 Q! ^! T; y4 voscillation
# Z: s; _. m& n, \rand-dynamic
, [' }2 ~5 L9 c( O/ l! S& m7 @9 q]/ h- c0 m* u6 H: F& C

- p, R9 K4 r7 u. iturtles-own[( N! [- s( V" |
trade-record-all
( {( `/ c' L& F  a: G;;a list of lists,
trade-record-one组成8 [" M& [8 c; \, N
trade-record-one
/ K/ t1 x8 A# u- ];;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 J7 _5 }% \8 x, C, Q* B

+ `+ F' Q) E: d0 Z* q, Z! ~;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]. g/ ?# h" X* Y' J
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
, [/ w. X; e# X& Ycredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list, @  K: B6 e: S* s% e) \  U
neighbor-total
' N; X$ O. ^  X5 s! ^! ];;
记录该turtle的邻居节点的数目0 M8 ~- l$ L% r1 K3 o
trade-time
6 B% V( v/ [1 B- E$ Q) W: z( Q2 \$ N;;
当前发生交易的turtle的交易时间+ I% m- b5 E7 h- d% O
appraise-give
* X% v- r4 D; X, q( g/ `2 Q! H3 z9 R;;
当前发生交易时给出的评价
6 d( r1 {1 t  w3 `appraise-receive+ @$ t6 H+ t- b9 ~' p
;;
当前发生交易时收到的评价: e% D6 i, V$ \- q/ C7 H
appraise-time
/ T( L8 f) k% U;;
当前发生交易时的评价时间
0 D* e, `( g& O- i( T- w# ?local-reputation-now;;此次交易后相对于对方turtle的局部声誉  Q' k3 ~1 ~5 H0 u3 }" _
trade-times-total
: m. k9 B4 f  Q6 ^5 O& e;;
与当前turtle的交易总次数
; f% b- I7 g+ a! }/ P' qtrade-money-total& l8 G2 T. H0 p. e2 P  t
;;
与当前turtle的交易总金额
8 R+ q( I$ y4 _0 b$ Olocal-reputation% m0 w8 e4 b+ ?8 Q. A
global-reputation9 |* v( G# a# ]9 _) s! r2 P
credibility+ \3 B3 d9 k1 d( T9 u
;;
评价可信度,每次交易后都需要更新
9 \7 c1 T- U% P& i& Q) w! vcredibility-all
9 Z( }, l' y5 o* M;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
8 H* _, a( G+ A( T5 e+ U+ C# v: p3 h6 e+ B% ]4 V' A( u
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
- V& t# M( ?& T# w5 Dcredibility-one
8 U' L  \: m5 G9 z- R& [;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people: w& E6 `1 ?; K9 @  Z1 \
global-proportion
# Z% ~6 M1 F6 W0 L# Lcustomer
4 V* i& e' m$ S. p' C9 b' Xcustomer-no
+ n) Y7 c, {3 D+ Ntrust-ok( g3 \) u" j4 j# W& B
trade-record-one-len;;trade-record-one的长度
9 V- `2 n$ K; e. r# }]
, g  _0 K* G4 R( y( \* W7 Y  _0 ^5 I! z% D$ G
;;setup procedure' `8 o" Q; {2 h

) a% t; R  e) yto setup
% t% c7 [! x, T/ Z# d2 N
. b4 x: n9 s& T# K$ H# Tca
8 N* u3 P( C) U, @8 X) a
- m/ r% R$ D" v4 l, \8 }
initialize-settings
& g* u2 H1 B$ S$ N# v1 s9 w- K
7 r2 ?1 ~+ N. |2 c6 t1 k
crt people [setup-turtles]

+ o9 Y5 W' t5 p$ n7 j# m" u
" L9 E6 W+ d8 ?. k( D) R4 Vreset-timer

/ E$ E8 c" |* r
- O; i( j  @* o3 H# Z  t; {poll-class
! u7 K+ Z' j2 F4 j, [6 v

9 E) L  A( K  S; b( I" O2 f1 _% esetup-plots
2 f; ]  F* f8 @$ G6 u
( b0 h4 M" G, i  o0 j, W
do-plots

6 ?& _* l+ P6 rend
  F$ i, ^8 N# Z
/ U, u2 e7 n9 m  }/ m0 \# E+ {to initialize-settings5 M# Q+ E, Z6 o) T) E
' ^) d. n5 N% F$ y9 d
set global-reputation-list []
" k! H; p$ Q( X5 Q- d3 t' p, j
% ~) A) E- B. b- _
set credibility-list n-values people [0.5]

+ n. q: V! P$ A: e# p, a
/ M# x4 m4 ]1 i$ H' n& H' Q4 E6 {set honest-service 0

2 A9 j0 N# I5 F+ k. P$ J( G' g7 |0 ]* l3 y  ~9 x% J: [
set unhonest-service 0

9 X* ?2 i- _# _1 b. u- {7 q9 t2 d) l2 ^1 L7 c
set oscillation 0

; o/ q4 w) G: s3 s: c6 S4 v/ {9 q+ j8 N- B, g" Z
set rand-dynamic 0

0 _2 X- H. n" f) z  j. a7 Wend
# X7 F* F: Q3 Z. U3 o1 r
  f8 u$ z% g6 }  k3 E, G$ @to setup-turtles   H% Y! I7 p; E' z* n: A, d
set shape "person"8 z; x2 ~" j) I; u6 y( \
setxy random-xcor random-ycor8 ?$ A7 C! w$ N7 i) ?( E+ F  Y  ^
set trade-record-one []
& r2 f+ e* ]: Q4 r. Y* H. X
) L5 \- U. m; G, Z% {
set trade-record-all n-values people [(list (? + 1) 0 0)] ( r- D% |/ U( H; `- N& \
- W, p8 C- \# o3 X
set trade-record-current []% b. |( ^* d+ d0 j6 ~* P
set credibility-receive []& K1 o4 K5 \& G: a, D8 v4 W3 u; T
set local-reputation 0.5
; w, U/ U  T( f! ~2 H  hset neighbor-total 0
! ~9 y+ M7 @1 y9 q1 b2 uset trade-times-total 0
9 {: `  M2 S5 L$ U. e( mset trade-money-total 0) u& g( {7 C8 e! m9 e
set customer nobody
7 G( D+ I6 e6 {3 w; }  p4 W; K  mset credibility-all n-values people [creat-credibility]
+ u+ l6 S) B) b! mset credibility n-values people [-1]
. x/ c* O: Y4 F3 g" w( V; \/ ^6 ^get-color
% p1 y1 a- w! e4 O* U

: m& _: |6 s; b% i/ g! d: g( a3 oend' `7 M& y7 M& k4 p- J

3 l* }! r/ I$ o# }$ {to-report creat-credibility0 R' p% O/ X; w7 ?
report n-values people [0.5]+ C+ J5 ~; S5 s- v+ ]
end! l7 M7 E0 O. B  k5 z" q

5 I" y3 P" k& y( v4 W& jto setup-plots' _) X5 ~% W1 y6 Q
/ w0 j& G5 y4 J7 h
set xmax 30

- J" F/ i8 N* V: H! f! ?
) @; U1 h0 q5 u# H' e; c; V$ Yset ymax 1.0

, @$ [. \; Q8 O2 M% M
9 ]) J- e: c7 Y$ Vclear-all-plots

" N2 W" }9 ?/ B2 P  Y% |' F! q( A# b
setup-plot1
. B5 m( }5 R% `) _5 @) d4 U
; m% G' m% D& E' w2 j. C7 w
setup-plot2
& e6 F# c' O6 ^. O0 s
1 M; m( a; V( C& P
setup-plot3
! A, N" R7 F: a
end5 Y+ z2 A) W; O' g0 W+ [6 E
+ ^3 ^% k  O, s; _2 M+ h; t  K7 Y/ p& M
;;run time procedures
  {$ x8 u8 F3 w8 J5 m7 g) T3 {  Y/ a- ]6 A' W5 W* h' a( d, j3 B- n
to go& g' N% b- L2 T9 X: u- r  l
3 Q  \; f: {/ F( A- L7 ~* `, h* S3 k' i
ask turtles [do-business]
' o1 \, {" S, \2 E9 b8 D
end& p( {& ~* C  {& v
7 \$ m9 O/ c& y* D6 j3 h
to do-business % `+ R3 Y4 V: U

+ B4 z9 o4 ~5 o1 j0 x$ t
7 F4 k: `) q5 Z4 }/ {' J2 k2 ^8 Yrt random 360
1 R) e: m% |* d# L
  }: ~$ i/ U5 l7 R0 {
fd 1

  D' z: D0 M4 h3 D; Q- C5 I2 w4 p$ M; a, W1 F+ c2 K6 Y
ifelse(other turtles-here != nobody)[
- |) \; p7 M7 l

' T3 N4 I, h* k" z  Q) V" gset customer one-of other turtles-here
! r3 m1 i# @% b) U
0 r5 b. h8 U2 }4 d' y0 _6 J
;; set [customer] of customer myself

( N* R, d: ^/ X6 b% ~5 y: ?$ a: }1 @! Z" n- V4 ^  k
set [trade-record-one] of self item (([who] of customer) - 1)2 b% J5 N# j: ~3 h  F/ @! ^
[trade-record-all]of self
/ V/ i/ j4 m- {' c! B;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ u0 }' y9 m" S  z. G/ h, U0 \+ Z! J) L3 `9 v+ f2 V
set [trade-record-one] of customer item (([who] of self) - 1)
& P" h5 Z( H) {4 F9 A1 _3 C[trade-record-all]of customer

( M3 w' ], _+ o2 ^/ Y
+ p( l. c9 T1 aset [trade-record-one-len] of self length [trade-record-one] of self

$ p, A% W+ r/ B& q' I7 U  `( j* D% ]: J2 r: `
set trade-record-current( list (timer) (random money-upper-limit))
( M" ~. V! ^0 G* N" w4 L- X
3 g: F, j, r: w/ H1 B, M+ v
ask self [do-trust]+ S* K- A  K. D/ i5 \/ }" n/ P
;;
先求ij的信任度, @9 F3 Z, S# Z, m% @1 J3 m/ `- n

9 m% y. C, z: A5 u$ xif ([trust-ok] of self)4 m- Y8 K' F3 g! U
;;
根据ij的信任度来决定是否与j进行交易[& H1 j  ]  g$ U" S$ ]
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- D# K8 K% K. z% X
' X: A2 n* j" X! a5 u; o3 u[
( c% P& z- b/ e: r% k7 {9 j$ d5 l0 @

+ Q& x8 i" a* W9 I+ n+ Y7 q0 Qdo-trade
3 @6 h: f" o8 [% n( D& K# Y
# g/ a1 u# n4 m: G- f1 V
update-credibility-ijl
! M! ^) |+ H; g9 N& W

! k8 Q* M* ]" oupdate-credibility-list; i+ c% P' @* m/ @' p

* B7 T  F/ {3 d3 U5 t& b* Z
( G% N& b4 }2 E. B( @3 Uupdate-global-reputation-list
* a+ n) T* [1 r  i& \

6 A, x1 |* ~2 Upoll-class

/ }) ]. Q: X$ z) |
+ H: d, j# a9 R5 cget-color
! F! j2 e8 P. N
7 W) m8 U* N! [3 `! `
]]
7 k, R& O; {0 @# ^: |# C( }" x* w5 V; ~4 D! U
;;
如果所得的信任度满足条件,则进行交易
% t! g/ e, ^' Q. J$ ~# O' n# k
8 W9 D: o0 C5 b1 |+ F[
2 ?4 X5 o7 N: @1 s( K, s2 T5 T3 t
+ _. [+ u0 C+ v3 _9 K) b
rt random 360

5 \: U$ c/ g/ C+ Q8 H3 ~
, f: G2 \  ]' D" q6 ?+ Dfd 1

2 A0 Y5 n  w8 G; H
' V' y4 p' E3 R/ q1 P) m! U1 u]

4 k; S, M% ^6 w6 ?$ F
2 I6 E3 \0 b! u$ e8 f8 ^; Aend

4 L/ U1 {1 J3 y3 l4 w8 S! D2 Y  `% {* ]8 D/ S
to do-trust
# B( ~* T& h$ G' g5 E9 F$ Y! tset trust-ok False
/ ]( m' v5 H: D! F6 A& h2 K* ]4 B, p6 s. R, Z, @0 j) u

7 T; o: `, D% O: c% Qlet max-trade-times 0
4 |7 }+ Y3 T2 }; N9 D/ |foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ j5 a& o; E8 j$ r
let max-trade-money 0
# H% n, H1 F1 o/ uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 X9 D: |2 a* D( J
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
4 t/ E6 L; j, f3 t& s
6 `3 a- f: O3 S! h% P

8 A1 L0 C! t: |% j; ~3 n( hget-global-proportion
2 r$ F1 O6 q2 m" q, ?4 llet trust-value
( P1 r6 }+ K& g& M) }8 H. G' \local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

& l- z! S! W: u3 Y) W0 y; ^if(trust-value > trade-trust-value)( S: P* {$ a( [- Z9 W/ v
[set trust-ok true]- \  D. B' q/ _! Q7 K. O
end" N8 x4 C& ^, e% p+ r3 U
: I5 Q$ I- \. ~( [
to get-global-proportion6 `! [4 _8 j. F0 P5 _8 a: B2 s3 y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)' H! m8 w' v: y- o( S5 d2 g
[set global-proportion 0]4 w& C' N6 U; O4 o6 r' _
[let i 0  Y' L7 r9 T' H: ~5 B5 z( t  L" R
let sum-money 0# @$ T3 s$ g0 Y3 ?' B
while[ i < people]) y8 n% B" _* {0 ]! j5 O& S& k
[  J$ u6 Q9 ]) r" f  _
if( length (item i5 Y, \+ k- \8 j  X# U& ]- i" m
[trade-record-all] of customer) > 3 )
! ]# H! p1 g3 T
[, f1 w% `. }9 q  P1 R! E' Y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))& a: C+ F( R* b- t
]& J) J$ Q! q7 w6 x
]. H2 U8 f: [/ H' U0 E
let j 0
2 a- u7 F- i8 R8 E& x1 O' Nlet note 0: |! Z& v3 w* X4 ~, }: S
while[ j < people]  K5 U* p4 b" z/ Z6 |# b8 d( n' C
[, f4 M: I. j1 q8 k6 x/ n0 d( U
if( length (item i% E& m- \* {% A1 W7 T
[trade-record-all] of customer) > 3 )

$ ^' G; f! G3 r4 j/ i; x5 R$ r[1 U& @+ G, |. G( ^) @
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 L5 h2 T% Y3 e
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ s* V+ {$ Y$ W. K( g' Z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
2 o/ a- {  D; x- n]
( ^. }9 \" R" [" w$ R% a) `! |]1 `9 _! T* b3 `6 h3 S. c
set global-proportion note, ^$ B. B' x7 ?2 ~  Z
]) k- X* B9 e% l3 u/ R7 N
end
8 G1 J/ V. J# K& ]2 E, K* F
/ M- ?9 [; F) q( K' x+ N6 j7 Bto do-trade4 Z* U8 l% H2 B0 ]* y4 n( ]: }
;;
这个过程实际上是给双方作出评价的过程6 Z' x2 b3 F) {, m1 A1 \* \3 r6 i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( |0 o1 A8 `$ F. \9 tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 M2 V0 l' q1 ?$ D7 m
set trade-record-current lput(timer) trade-record-current# U+ W5 U& x3 j1 Z6 D: k6 I$ s/ c& \
;;
评价时间8 i4 `/ U& z. ]0 s
ask myself [3 d; i& P. X1 e4 Y
update-local-reputation: G8 C. c; _( i9 m% h+ `
set trade-record-current lput([local-reputation] of myself) trade-record-current+ j4 G$ [* I8 K
]! h2 L4 G  D' M  }0 t& s% ?0 [8 I
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ L* g4 C3 a# z) i+ w3 S6 m; f( \
;;
将此次交易的记录加入到trade-record-one
+ k1 y% z" j* I$ g# _set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' r5 ^: H/ o! P* c/ \7 Zlet note (item 2 trade-record-current )
1 F$ ?9 ?9 Q# A5 @& e& t  Oset trade-record-current) L% W1 V3 A# A1 Y! C  n
(replace-item 2 trade-record-current (item 3 trade-record-current))
1 ~3 [; r$ s8 ^( G
set trade-record-current/ \; D% Q6 X( V
(replace-item 3 trade-record-current note)
, [4 R/ _; f# i; n; F+ b) ^
. s1 I8 Z, |6 {6 J5 v
- s) x  q3 K1 N$ r& ?8 S  F- K3 }
ask customer [' ?" y7 E$ z1 x# v- ^( d
update-local-reputation4 M- E: o7 }; k, W3 L
set trade-record-current; G! u. E, t. G0 P1 ^& N: Y1 D, w
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, H2 Y. d: u# j. N
], o. ^4 ^, g7 _
# C8 \- F+ U2 K$ U, Y" {: ]+ X4 I- e5 e
. D3 T( i/ j% U: B. ]
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& `$ R0 v; E( _' D- h) t
& z) i: U" p& Q6 V; D
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
: j/ F- R, v) g;;
将此次交易的记录加入到customertrade-record-all; {# ?( N3 h: o$ V  y# r
end
3 n8 k3 b% t# X, [. Q8 {
2 p, g  Z. y" g: C+ nto update-local-reputation" y' ~4 _5 K) a$ w
set [trade-record-one-len] of myself length [trade-record-one] of myself& y9 T  _8 a$ G( t9 w1 Z
" Q7 V- H2 G' J0 U$ q! q
: ~5 B" `* L& M4 l# K  |) x5 m
;;if [trade-record-one-len] of myself > 3
! _4 }- n* H+ w$ K
update-neighbor-total# M' @9 ^4 i  z0 ?
;;
更新邻居节点的数目,在此进行
4 ^3 M. j  ~7 w$ E6 Q/ p  t- Hlet i 3
9 M& i6 S9 h3 \$ Clet sum-time 0
, H, {9 i% X' i: r* Mwhile[i < [trade-record-one-len] of myself]9 B: `1 ^: `( @  w0 ?, W2 g
[0 j; ^4 R  I& j+ o9 f
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" L& z% D/ v1 t8 x4 o# r  c6 e
set i
. Y) E; f8 A8 c( i + 1)
2 [# Z/ D' `( t7 `
]
* p& T; E9 e! ?  dlet j 31 H3 }" T& q! g! {
let sum-money 0
: E6 p4 P" y8 E6 u1 fwhile[j < [trade-record-one-len] of myself]5 b( p! {: R& `- x9 ]# e
[+ U% }9 a6 V2 g  J' f! t% ^
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
" s; J. G/ E3 }( Y) y# \set j" Z0 ~0 p" U. e) {; R+ P
( j + 1)

6 k1 k5 z! Q5 a0 B( B' T+ m& o- t], j% {( @$ L8 }/ M# B9 _+ q0 {
let k 3% ~% ~. j; c; @7 h8 W, d) ]  I' |3 r
let power 0, A' @3 n+ s/ S* e: U
let local 0
. n- Z" w; p1 n( {while [k <[trade-record-one-len] of myself]7 B3 O$ T) _+ @! [7 L' G
[
) g% z8 G$ U7 C% O- q+ bset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)   L" n2 i* Z$ Z
set k (k + 1)
" _( O$ [5 \: ^3 r0 Q% M6 M]
  r& F" h; K) p& a2 X% _set [local-reputation] of myself (local)
& B/ S: f5 E4 r8 ^. c+ D, ~! iend
% c2 p2 C8 }) G2 V9 g7 G8 r' h/ w; T" G, j1 w$ p4 B! t: w
to update-neighbor-total
  B5 M1 G) M# m% e: u" ]
* N! D* U6 ^1 T4 M; h/ Pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
' P9 P0 a6 U" v! r1 \" }" n: O( X( C/ w0 g: m# s! X; r0 J: `
% ^: X& R4 i( u# J, W/ R
end
/ p  G  b3 f: q3 B6 A% p
; L8 K) y: P: _' m; X( B6 ]to update-credibility-ijl
- C5 q+ h% f0 t3 c7 U: Y: {! V$ [' ^; g1 j8 j+ N9 t
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
0 ?! _) [5 T8 G3 p! {, N, I! p! [$ ilet l 0
6 d3 Q2 l- M- O2 G& l1 E; S# vwhile[ l < people ]% P% U. ?) A& C* e% S7 l1 d0 O, t
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价, R8 |/ k+ v6 B( w5 {! m
[6 Z3 R4 ~4 D% v# l% w; ^* `/ k
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)) q7 _4 X' O& E+ y% F
if (trade-record-one-j-l-len > 3)
: j; j8 W4 G4 e* L[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
3 E- y$ O; W. B" P9 I) A8 slet i 3
6 m& D) X! L' V3 {let sum-time 02 Y% S2 z2 B0 ]& A: {
while[i < trade-record-one-len]
4 V, i* n: g, {! n( N[$ t2 R2 g4 C* P) B4 |$ k& |3 ?
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
& K" K* Q1 E8 s( I: `set i
  R) R7 g5 V& ?( i + 1)

0 s7 x' j$ d  I! ?' q]
* N- c* i5 v' f3 M7 a7 h' Z% Glet credibility-i-j-l 0
! l* y+ ]$ e+ S/ U2 ^4 w/ B5 Y+ t;;i
评价(jjl的评价)4 B' v; f4 x: o. u
let j 3, D+ e+ r! r) ^  _' U
let k 45 \& i6 Z  i' [6 P
while[j < trade-record-one-len]  {% N3 J1 ?- {$ u# P  L
[$ D+ w/ n7 v/ @
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉6 C# i5 l4 W) [) e7 e6 B" t
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)$ ?0 s  ~3 |1 T3 G
set j
' Q: L0 _+ K% I8 R5 @: f+ C( j + 1)
  S6 n+ r; L& e* p0 {
]7 D/ z4 e5 n: b( h$ L0 Y
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
' N2 w  J: t, o& E# w8 [+ [' B4 F1 y% T6 @% i+ B4 F

: Q3 w2 {; ?0 S5 m  W, mlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 [$ A9 b- I* v% H
;;
及时更新il的评价质量的评价
6 D: L9 X6 x* I0 }+ yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: ~' q7 J8 u( E# n. g, C& I7 ?set l (l + 1)3 I, d" v: ?0 R  U
]" k7 f; A' }- b
end# H4 j2 x5 j2 _

7 I' S' h) V/ k0 ]4 zto update-credibility-list
$ q) D* A: A9 Q0 [2 Tlet i 0
* Z6 r7 G6 w% Q; w+ Owhile[i < people]
0 i/ O  j& w. d1 E% }7 D[8 R* c* M" A  `2 h
let j 0
! b; s: i$ c# j: G1 \+ T" c- ylet note 00 f2 a( [' t2 g0 k0 ~4 G+ |  N
let k 09 E$ F$ c2 K* H, ^
;;
计作出过评价的邻居节点的数目
) r9 D+ O: f) kwhile[j < people]
6 o) d- s" |3 y: ][7 r3 \7 O9 w, Y$ @9 X8 q# P! b* P
if (item j( [credibility] of turtle (i + 1)) != -1)
& h  U( U9 S/ {;;
判断是否给本turtle的评价质量做出过评价的节点
  J/ {0 g& l9 [[set note (note + item j ([credibility]of turtle (i + 1)))
" b% n2 V; U. ^2 V;;*(exp (-(people - 2)))/(people - 2))]

( Z1 R+ k. s+ m) z' ?: X% V/ {set k (k + 1)
8 c% j- n/ n- D8 h]
" H  d" [$ z& k' G8 zset j (j + 1)
7 g8 ^) S( n2 b" d; A! F]
8 y8 ]" L# e% [7 `set note (note *(exp (- (1 / k)))/ k)
  Q5 {/ x& u4 W* O" fset credibility-list (replace-item i credibility-list note)8 Z( M9 k$ k: Q; {0 {0 |2 u- e
set i (i + 1)
. S( l2 H& G( x- r]5 x2 x: B) j% A1 B
end* Q! B% {/ h$ G  z& ]

' x* L( p+ o6 l! K6 [# K8 n8 s9 Qto update-global-reputation-list
0 Z0 A+ r. b( M: H2 G: Z  e1 glet j 0' @( @, r7 \- B& S; e
while[j < people]. P$ W1 j3 X8 c1 B
[# R4 ], W/ f* e+ W
let new 0% ?9 ]* ~+ c5 s' \) l
;;
暂存新的一个全局声誉
' f- e7 [# K# x: E; Ulet i 0) I+ F# m& ~/ c! e3 p- g5 h
let sum-money 02 E) [: i0 U7 {# X0 u
let credibility-money 0  z) y9 A" ]& i4 R1 Y+ h7 @% I. _9 t8 d
while [i < people]' a2 E, Q2 X7 D5 K, H6 A
[' a& R4 W( K" D8 N
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  [7 E- C  x, w% y7 r: h7 P* U8 W
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 U. R" @) p, u6 l& d$ p" ]8 K8 o
set i (i + 1)
' |- I6 o$ T* q- [7 h], K0 [5 @$ A; g/ y" c) m) i
let k 0
* @4 ^; {: l; i/ R) I2 |$ ]8 }let new1 0" W: R: K2 o3 U7 ^
while [k < people]7 o+ P6 j4 S% @# m  M
[9 [; I' g3 p0 e. `- L: A) ?* S) n
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money), a5 `. c5 O- }  y# ~. y
set k (k + 1)) D% e* O2 Q/ ]! I6 \% m0 M+ p* `
]4 z3 W% O. |6 B! C
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 @+ w  x' X9 n: w
set global-reputation-list (replace-item j global-reputation-list new)
$ G1 p  g- [5 U* S6 uset j (j + 1)( Q% b  w& F5 ]" X8 {* r" U
]; V# |6 l/ _2 b) C) M( q9 E6 \* q
end  K0 e$ [1 H( [. k" P) m

" u% f; y, z# h; q5 ^
8 w0 r5 \/ A. e- h  I2 r& ^- j* ~3 y8 p9 |- X0 R
to get-color
/ S# S$ q8 i& a/ E
3 P! X$ r" f: K# |. Oset color blue

  K2 W8 _; J5 j# {end
9 p1 Z" W/ v# g: a& X$ p* b- \0 u* `, f  B: e, C
to poll-class2 M. f- A* P) L2 u) D
end
8 u1 M( l; }% g" D- y& l8 P) O: \
9 P( y: H# Y) I  Uto setup-plot1
. L$ d. l1 u9 g4 f8 O+ s" f# {( ^1 E: K( h0 [5 t& z$ @, v
set-current-plot "Trends-of-Local-reputation"

1 i/ |+ B2 v- X% r. D
4 e. v& h1 T, t% e$ X+ _! vset-plot-x-range 0 xmax

: ~+ j2 ?& D7 F' m/ v: M1 {9 @  @; n9 t. C
set-plot-y-range 0.0 ymax

% ]0 v0 g8 p& H  {" |end: O! [5 L3 @6 }3 B* q

+ U' ~  i9 O: I7 x# Z3 Qto setup-plot2; B( t& b1 P7 c4 l8 d) `/ u7 }% S

3 z1 F) P" G( A: q9 yset-current-plot "Trends-of-global-reputation"

8 M( N! o; {2 E  K7 K7 N' {- ~: z0 s
set-plot-x-range 0 xmax
6 Z* t; g' w+ m

4 H5 e3 k% i& r- o! [3 gset-plot-y-range 0.0 ymax

3 |4 M4 ^  w5 x' ~5 yend
& y# X0 E% S, @. f& H+ K; I9 j
+ d- f7 h9 b+ X3 r- m  x. {& |6 hto setup-plot3
4 I% D' b& s. L1 H
0 H) `+ Z# [4 Q0 Jset-current-plot "Trends-of-credibility"
! g) _8 \. j# w

, f' L. T9 f7 j4 C4 N& Zset-plot-x-range 0 xmax
  S% e1 E( q* [7 F+ f
: r" Y, K& v, p2 _
set-plot-y-range 0.0 ymax
, q5 C9 a* j8 M& @3 M
end
/ ?; i2 i# @/ X$ ~1 m1 a
9 m0 u( _0 |# G; ]" a; W! gto do-plots
1 u$ D9 s& o1 S  c* g: N5 K5 ?set-current-plot "Trends-of-Local-reputation"
  z6 ]4 W. i) ^) o7 U2 e: tset-current-plot-pen "Honest service"3 z$ g# D/ X- e+ ~
end0 \6 |8 p! W: W7 g3 u7 W# H

- P4 X- ]9 G" @6 T! l8 G[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.* t* n% p0 ~& i
8 M! p2 o7 M9 g2 ?( O; \5 E/ d- Y
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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