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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:2 ]! \* i! Q9 s6 ~% V. |! l% R* \
to do-business 6 q5 }* {/ r# B; h" [
rt random 3607 P( J& q  o& v+ P& [' h, h. b
fd 1
! T0 {8 p' |, g) w4 Y' _ ifelse(other turtles-here != nobody)[: ~" K* i) S% \* `4 n* 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.
+ v" T9 h) ^# Q8 R% P. d- u   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # X1 K, l, ^& D/ {
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 l( X- [6 w/ I& K/ k: W; R   set [trade-record-one-len] of self length [trade-record-one] of self' I( ?9 ?  ?' B5 _- [7 ^1 K
   set trade-record-current( list (timer) (random money-upper-limit))9 p! l" X) B+ h1 x# i5 b: l: W

+ l, f& m9 @2 `/ ~问题的提示如下:
' `2 M6 t9 N  y9 A; o) q
5 l, Z2 [* ~% t& y4 L2 V- cerror while turtle 50 running OF in procedure DO-BUSINESS
3 |$ B4 R" r% X4 o; s  called by procedure GO
& d/ F( l. B1 h, L' b& {OF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 ~* U- k6 ~5 D/ d8 t
(halted running of go)
6 ]( w2 p- \' x
9 y! b* I( a) o$ p, k- h/ g$ I) F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~~
. ^5 z2 @7 M* C8 b$ O# `! z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; h' V" k2 @' {- h
globals[
$ J  c5 j1 z( w' f1 g5 G1 Z8 v7 hxmax
# }  {# S% ~0 K1 K' Z: tymax
6 U5 I0 B# H9 C' Zglobal-reputation-list( H: T, q9 t. A

8 Q8 f. Q4 X0 c' X;;
每一个turtle的全局声誉都存在此LIST
5 B& B$ q+ u0 J- e. a) Ocredibility-list
' U6 V' H0 X  u& j  Q" U8 z;;
每一个turtle的评价可信度
% D6 j* L+ ~8 L) d$ c! u# j* \' Nhonest-service
1 j0 p* V4 T: x* A$ sunhonest-service
8 Y1 G% |9 d$ hoscillation
, A  v& H/ S6 v5 Irand-dynamic
% L( [8 K0 a" L7 n1 _( P]
) N1 a4 m% C6 W5 _/ Q- a4 o( D1 v. V0 L6 V3 P6 J
turtles-own[4 D' [+ F$ ^3 u6 L+ [+ }
trade-record-all7 M% p1 Q$ `; d" |) ]. }9 z
;;a list of lists,
trade-record-one组成
# c* h  E! j% \  _2 t4 Rtrade-record-one5 O. p! l# S2 U- Z
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# a6 m) p; E1 [: t. O2 e
  w2 N$ \( m: W+ ^% y
;;[
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]]# y. J8 U1 J8 q1 i# W# X1 |: Z
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]- @& `* u& S, K  r' K1 A! B* b6 q8 m
credibility-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
% t9 ^0 d% {4 x5 K: k$ Eneighbor-total; T6 Z0 v! M: a* |3 a! Y7 ?# G
;;
记录该turtle的邻居节点的数目% j% T2 |2 F3 |$ q
trade-time
1 I, N9 W) g- a  E. X2 q;;
当前发生交易的turtle的交易时间4 @$ Y) x0 s6 }& g# L& H" L$ `: T2 e7 }
appraise-give1 }* {/ }: G: N( J3 H% X
;;
当前发生交易时给出的评价
4 ^0 G$ s/ z: ]+ Z4 d, }; A; `2 Jappraise-receive$ i4 R0 E; s( S- I. `8 Z, ]& D
;;
当前发生交易时收到的评价4 ~) ^  Z# ^; H& ^: s4 m% M! @
appraise-time
0 w  Z, g8 }' l* _2 H;;
当前发生交易时的评价时间
, q- I# z9 G. Wlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ L& G8 J" I" ]2 B! u0 s% Qtrade-times-total
( r& v& l9 G' h  n% S: H  F;;
与当前turtle的交易总次数5 J9 Y, ^! Z. V0 s8 D
trade-money-total' u* c( B1 r  _3 \7 m
;;
与当前turtle的交易总金额
5 b/ L/ |$ y  ^local-reputation
1 k# W# ^( T0 t8 h. P  iglobal-reputation' f: A1 @  a2 A/ U% F' g
credibility1 j; \% {4 D; |8 D8 C7 @; T
;;
评价可信度,每次交易后都需要更新; [4 T: b* L. J+ r
credibility-all  h: S$ \, H- b: y) M6 |
;;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
& R9 n, Y) J. o4 t
6 n  m  `. N7 ~;;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
4 N: J/ ]( H* [, q* l1 Scredibility-one  N) ^8 |) w4 U" u
;;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
- X+ w; o6 Z  }5 ^  r5 kglobal-proportion/ O& a# ^5 O: J8 a, l5 k. |
customer
* B; m5 A# k  _6 ?9 D; Q& @$ gcustomer-no
( `: L  k$ D: f6 Q8 y4 `' H2 jtrust-ok
& X' W8 z: S7 c. Ttrade-record-one-len;;trade-record-one的长度9 ?8 E' t: y0 J$ S6 ]% ]
]; ^0 k' o1 p$ e* T# ]' Q3 q% X

. W2 V. N- h+ i! w8 u' W! ];;setup procedure4 |; H; Z; _! W. O* k% K
9 X" \9 Y- d7 z) E  J
to setup
" D4 }: M, w( F. a$ H3 m# ~
$ ^- m% E1 w! Z- e) Z! [# cca
& n( A; B) C4 L0 O! S

7 X, m0 s: L# B  {; finitialize-settings

* M1 N1 Y5 A# A2 M5 k( w
( a- i7 W$ g# zcrt people [setup-turtles]
/ s% }* L) L/ `; l- p& l
- h# `0 \% H0 C& v9 y" D0 s4 b
reset-timer

: {1 q( K# X' @& H* g3 Q. o" i5 P6 h/ Q, d
poll-class
0 e" i9 h7 v. [' ^7 n+ w( E9 ?
5 ?- a7 [7 R8 ]0 H
setup-plots

: K8 K- N$ m; A% @
# g" z9 Q% q5 ]* O4 z: qdo-plots
/ q+ W; y2 g& ~5 [3 {5 C8 y9 J
end
  M+ \* k6 k/ ]& {+ N& b* g$ W8 i  E, k3 g0 z1 ~- V- g
to initialize-settings* W- P9 V9 {/ r2 }' V* ~- e
; R$ z% [% x; G9 `. g
set global-reputation-list []

4 X' }2 K) b! b+ P7 e9 g2 F
4 k1 T9 }9 X9 s) ~set credibility-list n-values people [0.5]
% \$ m5 X6 V* I/ h) C' v6 O

+ s+ s0 w. m: U1 @( Z5 iset honest-service 0
' c& @: e+ C1 ~/ ?7 C# |
& i# O! f# e4 y: m: e
set unhonest-service 0
, n" G/ c+ M; p  w1 \4 ?
1 @1 S4 }/ W. n, v
set oscillation 0

0 x7 e% W$ h. q+ I% l* t) Y' o' k! G, }  m0 x
set rand-dynamic 0
& F- k9 ^! b3 A+ d# A" d1 v5 D
end
& ^( j+ z# e, T+ Q; \9 A5 r; y; t; A* N- H. J! ]0 ?
to setup-turtles
5 G8 i5 C$ r* ~! r" E' xset shape "person") j" ?" q. F( I4 P5 \" q  v! ^
setxy random-xcor random-ycor
; k$ J0 B. O' u4 `0 M! [set trade-record-one []$ J5 F* n0 r) J
3 l8 {! S9 r! _3 _( h. U, Q
set trade-record-all n-values people [(list (? + 1) 0 0)]
! K# E0 h9 h3 U( Z' N

. {: S/ M6 s+ }6 M4 m" lset trade-record-current []6 v8 u2 H4 k  V; X7 z  w
set credibility-receive []
! g3 B6 a; B% V4 [set local-reputation 0.5
6 N, h. C: \9 j/ \4 ~' lset neighbor-total 0' \$ r9 u4 l: d4 ^
set trade-times-total 0; ^+ V6 n+ |" J7 w
set trade-money-total 0
# u/ M2 Z, t3 K0 H, ^- `2 ^3 Rset customer nobody
* B+ y2 F) {! \3 w8 z. O0 Qset credibility-all n-values people [creat-credibility]3 o; S- X* Q6 @
set credibility n-values people [-1]3 k1 M  h2 B4 h5 D1 a: p
get-color% }3 A2 g4 S8 A1 `

3 c. J# c- T( G5 h$ V9 s) c% Send
) F( z  d4 L  H9 `/ [. S6 c+ x+ G' x5 G: d: K
to-report creat-credibility" C1 h0 X" b* R! i8 }& T+ Z* m% G
report n-values people [0.5]
3 Y- D" j- a4 j" ]  mend% W4 x' B  `$ h4 b$ v4 v, |

) J, P' X! |4 h. y. Eto setup-plots5 Z2 q% _& q: o0 H6 X# x

+ M0 G4 K7 ]3 ]% g2 G1 ^set xmax 30
: |! w' x. U7 N7 g) m
+ e( x! I7 d' @. x4 ]2 b
set ymax 1.0
6 x  q8 H( Y' Z. A2 Q) K

5 J( q; J" {' ~- m: G4 lclear-all-plots
# x9 o/ F1 b! a5 {

9 n( {/ Q* _, E" q( {! Y% b- Ksetup-plot1

8 s, a% N2 U& _0 [' h* P7 w5 B% }% |; U* ^5 l
setup-plot2

* H) m& Z+ v! }; I0 z
: M, s9 ^* h# S7 usetup-plot3

* V  B# W* C/ U$ P! }end
( M- h" x2 @( L. q* i$ P
. r% h8 D& y( j& i5 K8 m;;run time procedures
5 C8 h1 |; a9 k$ b
" ?1 f8 d2 x, }7 ]. r" L9 B  nto go/ B2 x& B$ f' d% p. P2 Q7 H' R& ?
' w9 W+ B; _& W4 R* x9 w
ask turtles [do-business]

$ Z, M, U, i1 c. F# fend% }- ?6 d% D# x: }: e

5 R( U- }8 x+ N* y# X! Nto do-business - X* S  n; W+ O; M! q

, d5 N& ]* o# z0 \8 D- Z& e5 f2 A! A2 a
rt random 360
# {! z$ ~- k; u* i0 X" F

- V  k! e% i5 m! I) b- Nfd 1
' J+ b( |: `9 i$ N2 }7 L; r# W

4 S. R. \# R0 t0 Y6 l7 Difelse(other turtles-here != nobody)[
7 H: ], ~/ H( L; `+ w' R( c

8 [' N+ {4 w9 a, l8 Nset customer one-of other turtles-here
) G+ A, |+ x" [- }6 T* W

+ H6 k' x3 j( I;; set [customer] of customer myself

/ M" p; x$ Z% a4 v5 ]
1 q  ?% @: V& o  b6 jset [trade-record-one] of self item (([who] of customer) - 1)+ o5 _$ ~& N- u" r4 C
[trade-record-all]of self
+ f! U8 ^! n% c0 a! R4 x) O6 D;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

. l. c- A8 f' ~& Q% u- o1 o8 I  E  O: i- y: O( p
set [trade-record-one] of customer item (([who] of self) - 1)
+ \7 e/ g- d; d& c% i[trade-record-all]of customer

! v# Q7 y8 o+ m8 z0 g6 X8 [6 N
. L* H8 ^3 O( k; ]- |set [trade-record-one-len] of self length [trade-record-one] of self
9 N1 Y$ n* C7 A& @7 }% U9 T/ p

7 b+ x% S' X$ P' m  {  zset trade-record-current( list (timer) (random money-upper-limit))

2 z! i+ m! `+ f+ C2 g  n/ A1 T+ e% p2 q2 @6 f" }& S
ask self [do-trust]
. v( b! i" n- a' q& G; {;;
先求ij的信任度- m+ a, \% p7 ?( c) z' G
2 J  B! H( X. B7 q7 l
if ([trust-ok] of self)- v4 G$ Q+ H3 J2 F5 T6 c
;;
根据ij的信任度来决定是否与j进行交易[  B% G7 S1 L- Q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself! G- z- d  k2 A

, G5 k& W. `1 F/ S[

* s  W; ^& u: a! M! \1 }/ d* X3 c$ D$ J
do-trade
+ z0 I# W, G0 f1 z  U  z& n
2 O, j9 }. i. N6 }
update-credibility-ijl
2 k* D: ]/ j0 @2 I. ]9 B* D
. Y. g& A( k! w/ D
update-credibility-list! T- ?1 }# e, |) d3 d, c7 Z

0 j+ E( ^$ q  o) Z
. B' Z1 L: v, f3 T/ r0 ?0 Yupdate-global-reputation-list
  K' L$ b0 e  j' ^3 _
3 D& g: {! P3 x% f% T2 X  c
poll-class

7 S# a* y+ d2 T5 z$ ?! Q# A% N( V! U, g% m1 \2 A& N
get-color

0 F; O* I8 E  V" h0 X* Q0 ~) d' l7 Q$ m8 }! G4 l! u" O+ ]2 g9 V! f
]]3 y  o6 {: x# ~& i+ _2 i6 D
* c8 ]$ K- P' u5 R& [' A
;;
如果所得的信任度满足条件,则进行交易+ E% G4 _( t7 |' ~

9 s! L: F1 _! h1 W2 p9 Z7 y5 Q[
( }% C- j: D, Q; f! j
4 r, W0 Z* u4 ?2 b% h
rt random 360

! V4 i6 `& }" |% ~6 M
4 S8 s7 b: E/ G' B$ |6 O! Ufd 1
' P2 c2 r" Y( n; A7 N6 @' k, z
4 D# l" b9 f: y) M( y  U) B
]

  z. V/ N' D# N  H  f1 k* l0 Y' H$ C% L( X- ?, y: T
end
$ L7 s0 ?1 `+ m
/ \2 ~6 q  S2 W, ]: o
to do-trust # p, X& P2 G8 d; }3 ?" w) k
set trust-ok False
3 A$ T# Q; W# {* ~" p1 M' Q
; H( U( U" E' _, z8 V: [2 m

8 w" h% p: B! C: E# j, X) Ulet max-trade-times 02 t: l( x+ e/ ]0 a2 F* J  r
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! c. K$ V) z- d! k  s
let max-trade-money 05 i; T" Q6 b8 C6 z6 j8 l1 M' x
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 k- ?- r% u- m) U& i& w- vlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) |* Q9 }+ n* @4 d0 R. D! B% \" o3 J6 y' z9 Y/ b: A+ g; C4 W

9 F4 |* h. u% u/ [7 T" t# tget-global-proportion
) k- v& t7 l5 Y1 }let trust-value
- [3 x0 z. B# {& X: @, R! O6 E) klocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
8 k8 K  M( @) q% D9 q- d7 C' [
if(trust-value > trade-trust-value)
! u- e, L; G7 `[set trust-ok true]
8 C, Y# \0 b$ V5 b/ \# _end9 ?6 q" y8 D* _7 K( ?4 G& A. U
6 ]; F. g8 [% p
to get-global-proportion4 p/ m7 i. l# Q5 {2 {% h- E
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  ~. t5 f( U8 Z% u
[set global-proportion 0]1 F1 F& @5 Z+ D6 e  L- w
[let i 0
0 o& T: `4 k, [( A* ^& Zlet sum-money 02 i9 `5 x: x. R3 X" z- y
while[ i < people]. [4 `2 y, l! B
[
) F' ]  S2 h+ y9 iif( length (item i
5 b+ _! X  y7 P$ l4 R$ S5 J( F7 c[trade-record-all] of customer) > 3 )

* C  G+ i) X; U1 c[
- t4 V. l% W) U; Bset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) _8 [; C9 D  x" h& p]% ~1 {4 }. |  y$ A) q& `' R
]/ _) Y  \. B9 j
let j 0; F3 X( t, M& K& l/ n  h$ F
let note 00 j/ l, D3 E3 }! E8 R9 |1 l4 r
while[ j < people]
7 d* _  H* E) u) ~; A3 }7 M[
) e5 o6 O+ F! N2 s- ~" R* e4 oif( length (item i
& S/ ~9 s7 k4 p9 E9 E3 [1 H[trade-record-all] of customer) > 3 )

1 I) Q4 f$ R, T* `[: I3 K' f, A) H: J! c
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& I, ~- T, f+ Z& K* C" k[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; R6 V- _' H" T( T7 m0 D9 Q3 k[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' E5 `7 O/ {( r: E8 U, E4 \]4 ^' l1 @  f1 q/ K# E
]
* c% I- u$ |# Bset global-proportion note; r* x" \7 \$ {# f
]
8 K9 R6 F& W* j: S: I* c# I1 o: xend
0 }2 r1 R% G5 u: ~" W, S0 ~0 P  ?# ?$ p7 j/ b
to do-trade
) O' ^0 d$ L$ ^& z% f" O' ~;;
这个过程实际上是给双方作出评价的过程9 z; W) {; _7 r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* J+ E, ^# B6 O& lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 H% F! t2 r; l8 B5 m8 m9 q9 Mset trade-record-current lput(timer) trade-record-current$ q6 P6 R) s' f6 Z1 e( x
;;
评价时间8 W6 p% K5 }4 i+ s% |, R
ask myself [
4 p$ y6 S/ i& Z  J' [update-local-reputation- `$ w2 l; a8 A, i/ N
set trade-record-current lput([local-reputation] of myself) trade-record-current
2 f2 a& ^. l6 a+ y! u) d7 p, Q]9 D3 i! w/ S# L, e! }0 k! f
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) L' |- H0 D- h: R; S) J* m
;;
将此次交易的记录加入到trade-record-one
1 e& m( y* Y7 U1 c7 T1 l1 f4 I4 Xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 W/ |; ~, M; ^2 ^' E
let note (item 2 trade-record-current )4 p3 Q/ W! v- U, C/ I
set trade-record-current
) ^( V. R" T$ K' M; [2 l8 x8 {(replace-item 2 trade-record-current (item 3 trade-record-current))
; `" u" W" G& ], b: \( V# q# D- a
set trade-record-current
8 }) ^6 m9 K: n6 o* x(replace-item 3 trade-record-current note)' [& i4 U  m" T& W

- m: R  s  m+ o$ @' m

9 N4 `8 p: k" S) a+ _ask customer [3 r- `: p  [, b2 L( A
update-local-reputation
' E7 _: \1 T/ B+ |& p& Z2 W9 t) w+ S4 c# }set trade-record-current. K1 c' I' J) x# X" ^2 F
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ B- s* l: k& T* G; c( T0 y5 x
]$ j7 H: m8 m- w: D. U5 K  P

& V$ X5 w) l5 P, _$ `/ R0 |

& U) l4 m% V* E9 L, |0 ~8 h3 r& y% Iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer: c- H! ~# I0 x& C; s9 M/ w; i
$ f7 y1 q( g  U( w) i
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 y8 J8 P/ k: ~( @+ s1 r
;;
将此次交易的记录加入到customertrade-record-all
& k& w0 t% }6 i0 J0 \2 Dend
4 e3 L  _) `: V9 O! L: E$ g
$ |9 C0 [7 D0 Z# R7 qto update-local-reputation% {. N3 [8 R! ~% T# c
set [trade-record-one-len] of myself length [trade-record-one] of myself
% r9 V' a  B7 d8 c4 V1 B  m1 }2 j; L* F) F1 a

7 c( g! p. A. Z8 d9 Y, X+ f( ~;;if [trade-record-one-len] of myself > 3
6 m! K) S& b+ t$ H8 w: b/ ^. _
update-neighbor-total
( m4 n$ k8 j& D" L2 Q4 q$ L3 k;;
更新邻居节点的数目,在此进行  _7 Z2 N) M  J% z5 U
let i 3
" t$ H. O1 {& c: C; u4 Q; Z0 dlet sum-time 0
1 B- r4 ^1 V4 q) F2 u2 @while[i < [trade-record-one-len] of myself]& l* I" E4 e9 V$ L+ W
[
1 D+ V% _+ d0 Pset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ l2 }% r' W3 U" r. |: lset i
8 B- F- C4 K4 g. ^% ?( i + 1)

2 N# m  \6 c% p. M+ f- y: p/ {* `]
+ P! }/ O/ y7 Y) A, k% Alet j 3
9 e3 J% M, L: n9 o1 dlet sum-money 05 {, \' f7 F2 Q& d( J* f- X2 `
while[j < [trade-record-one-len] of myself]
6 R( t5 }6 X5 b9 I5 i9 g[
8 J: y+ H# {8 P4 c1 z" P8 kset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
& q8 V# C4 [: ~1 q& h0 j7 e/ Jset j
4 o% }' _; v2 J; i) M# ]* |6 s( j + 1)

. b' d: }- w9 D) n# \]
& u) o+ u; ^! U9 O+ M8 c" R1 Zlet k 3
. {5 y4 E3 a; Y1 {+ blet power 0
) D1 Z/ l9 @# \, q9 d0 v' Zlet local 0
$ ]2 g$ ?6 r' r' \while [k <[trade-record-one-len] of myself]  D$ U3 l$ M) }" G- x
[
6 {/ {# p  D$ ~' Y. [- ~set 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)
5 S' G/ H& `! T! |9 hset k (k + 1)
; H" Q- Z5 T0 R% v) P* y]- ^6 }4 U# m3 _6 j" Z  Z1 ~. G
set [local-reputation] of myself (local)6 O5 X+ H& b# c0 H1 V! r
end
! k$ N5 O( ]3 a7 p, W5 X2 F+ |
: @5 E: _. g/ a$ z# G* N: Eto update-neighbor-total
6 ~+ f- A) b4 _( g5 Y5 D* ^) O' V# X1 D; K6 y4 b9 |
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ q6 b: i2 v( [" v: h. ]4 j9 t
- A  @- C+ d: l9 l* o6 y
3 Z* L( J6 i8 G" v: v
end
9 F5 N, t9 L, j' E' B
" }2 ^% U8 X: ^. l, g5 I) N7 qto update-credibility-ijl % s7 c, n) i, d% e
! m& X  F$ y' S, T: C
;;
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。
" t3 v. l) y  q% l7 plet l 0
: p6 C* c1 n' _$ x# [2 Dwhile[ l < people ]
4 v: k6 x0 I. _2 |& b. s; |;;
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
: \. Q/ Z# a# F+ p[
( ]0 l- m& ]8 @6 Clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, d, E" S# m/ V$ a% ^; l& e* Bif (trade-record-one-j-l-len > 3). A/ v$ L. z6 X0 i, z
[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
) t  q' e* N6 j( W% U  Ulet i 3
: v  m/ u* |: n% Q7 N( vlet sum-time 0
& F: _/ K0 w( b0 Mwhile[i < trade-record-one-len]8 S1 Z0 c2 T0 g7 W
[  ^) _  Z+ e3 ], ]% c/ ^2 \9 |' |7 r
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
2 L/ o. Q) d8 M+ }. ~set i: f4 K% V+ E9 Y) T- J% z, \
( i + 1)

& @) N6 ?9 ]. T4 e5 D]7 ~7 m7 z) _1 k& V- g0 i
let credibility-i-j-l 0( T; E& ~' d1 a
;;i
评价(jjl的评价)- l8 P" t; J4 Y4 I7 S6 J
let j 3
/ ^) M4 O! y# d5 J: H! Blet k 43 y; g' }5 o9 `2 V; G) m
while[j < trade-record-one-len]* n) b7 l! l; z: X1 z& y
[
/ \) P; ~+ ?: g* U. i% ~4 B. jwhile [((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+ i4 q" _! E2 B) v/ x: J6 C3 D
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)
, R: D4 v+ A6 \" j* a4 Bset j
# \8 ^4 G0 G% ~- ?! s1 g! K  f( j + 1)

) E+ J0 t3 [' q; v1 D. Q. g]
, P0 [) x; d1 o9 c- v% q* f, Oset [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 ))7 ~: O# H  r- e* M- \$ i4 c
, J# E$ e+ P9 A

2 h5 L) s, G% r5 X6 Slet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): Z2 I8 a1 E) ^' e, }
;;
及时更新il的评价质量的评价# o* e- e1 Z" U- C* g- M
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
2 I% M6 |) q2 Z0 z  E4 rset l (l + 1)) O6 u: y' U; c
]$ r( `4 _+ U; |% s4 H/ S% n% i
end
* G! m- H2 ~8 b3 t% R9 f) i
/ b3 [9 `7 C( _: ?; oto update-credibility-list
4 k! s. N: ^# e; u7 M5 K# U/ T. s! Zlet i 0
; j' s. V% P" F  V5 c# owhile[i < people]' m) N: {8 S( T* I
[& h9 g5 t6 N: ~+ x! ]/ m' |
let j 0. U$ W! \& h/ s# O3 N
let note 0. k0 P7 B; I7 v+ J1 [
let k 0
) ?! a6 R. a' y$ `' P& m;;
计作出过评价的邻居节点的数目! A; a* Y" e( ?" z
while[j < people]$ q9 Y  C& |# D3 O
[
" s- e# {2 E" A: Z, dif (item j( [credibility] of turtle (i + 1)) != -1)
/ D4 E  P' Y- f# S3 U;;
判断是否给本turtle的评价质量做出过评价的节点
/ ?5 ?5 y, P4 F[set note (note + item j ([credibility]of turtle (i + 1)))
' c4 z  K' y5 T6 D0 b;;*(exp (-(people - 2)))/(people - 2))]

7 F; _, P8 v) U9 t0 s  k5 e. Nset k (k + 1)& C% d- U5 D$ Y$ J% e, b2 t
], p; P# h) c; x1 ^! @& ~6 b
set j (j + 1)
& F1 Q2 E& k$ R0 D4 {]
) q7 y# n1 P' Y6 `7 S% T& t& L% xset note (note *(exp (- (1 / k)))/ k)6 V4 F6 y2 K4 q# o. \6 n
set credibility-list (replace-item i credibility-list note)- k6 H" i9 u5 S/ f
set i (i + 1)
/ x# O) U, c- c8 [4 r]
$ z& I- A( |( K" N0 z( g: Gend
( \1 d/ ~1 ~: }9 E0 o! O1 M4 k$ B: @8 E& c
to update-global-reputation-list
0 ?4 _; P* q. x- C- Olet j 08 i3 b1 Q9 B7 I& e9 `" b- W2 P
while[j < people]
7 x& N  G! \0 e1 ^0 Q& a/ a[
/ q9 {6 I' A+ l; [, Q2 h8 ^! }let new 0+ S, A) ^5 @- Q
;;
暂存新的一个全局声誉
9 I) Z" q1 H* dlet i 09 C* ]% m; u# B6 N. m& e
let sum-money 0" @% _& d$ p8 P
let credibility-money 0
+ F- B4 k3 q0 l& Q" l) r8 Fwhile [i < people]
; \  h+ h: y" v) T$ e* K3 j5 H  M[; G5 h. w2 V: ^2 p- t, v
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 p: m: z- k6 W/ k# Z2 a
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 W1 D+ O9 Z! c5 Iset i (i + 1)
5 z7 c7 q2 |! x- q- J5 y. {]
* X- R1 K+ \1 G# q3 alet k 0
5 W8 O3 A  E6 \- r- X1 Flet new1 0' z; C7 H# O. T; h. @: C! {
while [k < people]
% E1 k" l- r, C- i& R- ]) M- b1 j[
; S3 n, Y2 E* `: T! e4 g0 lset 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)
4 M2 T7 f, U8 y; y3 Gset k (k + 1)
9 p% b5 b- k$ E) r9 B( Q( a0 G4 r]
, J! i5 }! l, V0 z; P" Vset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: j+ S8 w- }0 H* E3 _5 l5 y+ p  }set global-reputation-list (replace-item j global-reputation-list new)
) @! C( ^& r5 j( Z# Q9 ?set j (j + 1)" S3 e/ |9 |2 K; E4 i0 W6 ?
]
. [3 V" W2 f5 C, s$ pend0 n+ z$ i; |4 s( [9 J0 K& }
5 a1 I% ?3 N. o6 e
1 b' L) E! J$ `5 j
" I, l. b. a: s/ T0 i
to get-color
1 g+ c  P& z# t+ _5 [0 ?, y0 u  w! [" S( p4 |
set color blue

/ a2 A  F2 x7 F" o. S  q. \$ t6 ]1 _end
, f/ h9 }- }: \- G% `$ M) R* [# s5 R3 `/ u! {
to poll-class9 i. G6 w' W2 _' B- ?; e
end
- B. E  C) w2 s7 d# q9 J& O/ M0 a, g/ X- }  \& D
to setup-plot1
; i" D2 M/ Z3 |- {' B
' q9 I. S; \: ?& _$ C) Xset-current-plot "Trends-of-Local-reputation"

# Q9 l2 v# ^8 ~( H' e5 z2 s; f
set-plot-x-range 0 xmax

6 O4 @+ x/ t: ]
2 \- B8 _5 }  W. iset-plot-y-range 0.0 ymax
! `: F9 k! s# A
end
2 ^2 H9 B6 ^+ T+ J
' n* V5 e& \0 @# zto setup-plot2/ t' x( Y9 `) f  ^4 f! Q
4 i! ~+ T$ N; @6 Z% P) P
set-current-plot "Trends-of-global-reputation"

1 b! L+ n  x$ R  ]# z. @+ X: p& F
1 V! a6 d. }& ^+ d3 e8 Pset-plot-x-range 0 xmax
# N* O7 j6 S2 v. n
. |' u2 B. }$ U- @. s3 M
set-plot-y-range 0.0 ymax
. k# S. M/ D  }& Z3 g$ ]% a4 V
end
7 t/ p3 T0 p- F! G
7 M- }; F; C5 ?3 Y% i0 ]to setup-plot3
2 e% q7 n  ]3 I5 S1 B4 Y% L( `
4 A6 v! S. |' }4 N3 K. r( ?. Qset-current-plot "Trends-of-credibility"

+ m  K- ], y( k& x' P& z+ @) b  I
! e0 D9 b  j' P) _/ z. X( m) Wset-plot-x-range 0 xmax
# C$ U, N/ M. i  H3 [
! b: \2 C; P1 S: |& g! O
set-plot-y-range 0.0 ymax

/ V, P4 ?8 ]$ H# O- S# Uend- m$ ]8 X1 y7 W, p$ K. G

: H! z5 m2 y' o, M* hto do-plots
2 c6 `" b" o% g; |set-current-plot "Trends-of-Local-reputation"/ s' V. C% n% k2 \% g
set-current-plot-pen "Honest service"# i0 T; ~! S, u+ }7 d
end" K' j4 ~, a6 D8 i3 R: a  D6 Y
8 C! |: Y* `  Q5 X
[ 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.
2 V. S# s, f0 t
* ?; \2 C- l4 d% P6 g1 z/ G7 E0 ?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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