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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:, A2 t- J9 s+ C0 C
to do-business
, l% v( W, t+ ^ rt random 360; ^; \& f) [# Z
fd 1
4 q8 {6 |$ [; C" A3 }8 ? ifelse(other turtles-here != nobody)[4 B! m6 p; T: I6 U$ \/ Z  y
   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.( S, r+ T3 b. S* @1 y
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 Y3 J) ?  Y  b   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ Z2 u7 I- K0 ^7 \   set [trade-record-one-len] of self length [trade-record-one] of self- D* S# P4 p0 O, t1 v/ j
   set trade-record-current( list (timer) (random money-upper-limit))% r! B) l5 W+ \" W0 T6 a
; s6 N5 u' ]. I$ n- g7 k7 `
问题的提示如下:8 `# L; y+ q/ t( x

1 D* Q5 {/ O6 i) g- |error while turtle 50 running OF in procedure DO-BUSINESS- o* L' J% \4 E0 H& ?
  called by procedure GO; L7 E! g9 o5 Y5 H: |/ Z# }
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 @' s1 [8 r+ m, }: s
(halted running of go)! u+ ~& ?. ]6 O- ]' k' q0 s
. E: n) D$ ~$ E4 Z# N% C
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 q: e) p# v( f% N; h9 h+ N4 O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
& ~( g2 t: U% o0 v/ dglobals[1 @+ ?7 M1 a8 A9 t( e% |: Q) @
xmax
  e  E7 D+ \3 v8 r9 |ymax/ }+ J9 a* j+ S
global-reputation-list
/ O8 v6 E$ a: A7 _0 S" h0 e# ~
2 O" r/ V1 `+ ]2 [6 B;;
每一个turtle的全局声誉都存在此LIST
* _5 b% M( ~* N8 F7 S- k- e) ocredibility-list
/ [# S) f3 ^% ^  {1 Y;;
每一个turtle的评价可信度
' C4 y$ K; n0 l. h* @6 {5 Yhonest-service
9 U  L. Q3 h( ^: runhonest-service
9 o- ?" X" J5 A5 e+ |3 N1 H4 {oscillation8 `. Q  a6 m, w% `# t
rand-dynamic
* W& x$ P) G! P- C7 Z8 @9 `]
8 z( Z2 [! c, k4 ~  I
* P' ^+ a: ]+ \- o  c+ `  t! eturtles-own[
! q$ g0 r4 m' ]/ Q! Ttrade-record-all! \4 E2 }$ G1 @1 e: Q, t
;;a list of lists,
trade-record-one组成9 b2 _' B( j6 v# K( W/ {8 t
trade-record-one& h* w+ M1 P. r
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
  A$ W1 Y: n  v3 t3 t) Q( L# z- @* `
2 ?; e3 X5 t) E5 ];;[
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]]
  c% w! K% n* i2 o9 Etrade-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]
/ Z+ i2 G. X+ r6 _9 h; g( c5 d& E- {$ Wcredibility-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) J. x* n9 ~" X9 w/ t
neighbor-total
% N8 N  @8 C9 I;;
记录该turtle的邻居节点的数目
) V- Y) \7 b, D8 k: @trade-time
3 y2 R5 l# I# b$ S+ {;;
当前发生交易的turtle的交易时间
! C+ `2 F$ N- K8 Kappraise-give
4 N$ Z: Y- k& t' h: y% V* w;;
当前发生交易时给出的评价8 a! B* P7 k1 j- R/ r
appraise-receive% N. u; M0 i# {! t! h0 v5 s- M$ {
;;
当前发生交易时收到的评价1 p$ t2 h0 v1 H+ s
appraise-time  f( W" Y. |* ]/ x% Q
;;
当前发生交易时的评价时间
4 G- B: K+ {" s/ ?" r4 y9 Olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉  v, e+ u2 Y! O" t* ]# n5 m
trade-times-total' U2 p: v6 ]2 U3 O" B- _6 C% v
;;
与当前turtle的交易总次数- v* n: w, \2 D3 U: ^4 |/ M
trade-money-total6 y' O; x! t. V9 e. ^2 D# V6 B
;;
与当前turtle的交易总金额
" F4 {# U  o8 Hlocal-reputation
+ F. `- T) F3 }7 |7 Rglobal-reputation
; d, F* J9 H2 tcredibility1 X, W" H4 @6 A" @- u: k
;;
评价可信度,每次交易后都需要更新
6 c0 o/ u7 w. e6 r) v" J/ vcredibility-all/ o& [$ |. r8 t0 u' s  Z9 L# d" o
;;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
1 p9 P: S0 I; Y; ~: j+ c+ p3 M
. e9 ^0 ^$ r7 E8 y9 X  \$ M;;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) W' M5 W; V: K5 h4 {; f+ H+ i* Q1 [
credibility-one
  h1 y- k8 M1 P, G;;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) L0 P0 t5 R2 i4 g
global-proportion
9 k7 M& T( _2 ocustomer
4 w  Z3 {7 d( d9 O$ }: D% }customer-no
# M4 z; P+ K6 \! @$ g: M6 A* ptrust-ok$ ?% O$ b0 `2 X2 R% z  S
trade-record-one-len;;trade-record-one的长度$ l& G& A3 O$ z& X& D4 q$ n
], _4 c5 b) b9 C% M6 ^

/ w& ]( Z+ ]- x' };;setup procedure+ U; a& I8 G$ J
/ b! M( W$ n6 ~" I; V% ^0 v+ w  z
to setup
' r0 T  a. }* M! s- s" ~$ F! M' I% H
ca

& S; I/ q3 `! {6 P/ ^3 t7 ^+ p$ t% u1 R; Q
initialize-settings

9 `% }6 e/ ^0 ?$ a( `) Q* J  b- E$ G$ P" A
crt people [setup-turtles]
4 C$ }/ u0 E) ]( J
& y# J) O% R- Y& ]' g6 ^& X
reset-timer

) p  M) s: I# h' s
6 Q. X) U( z, C' Epoll-class

8 b  O$ {7 E1 z& r) W- X- r' ?! i: ^& p0 f8 i: j% ]
setup-plots
% g, V& W5 A" q& t  V. w
3 x+ |/ T$ G( M; Y# t* S6 m1 \
do-plots
/ m1 |# s! L" F  ?
end
  {' H+ E  z" y* @" {4 v+ Q/ f
4 U+ _. Q% p2 M2 B8 \+ D! Qto initialize-settings
4 C9 w- {. m1 ?; j0 V" _; _9 T8 `! Y0 ^- f: B' t
set global-reputation-list []

9 S7 U4 R' d4 `+ x- v
( a& x( F% g, {" sset credibility-list n-values people [0.5]

% x7 Q" k/ }2 E- Q/ b( p# i& c1 ?% h/ ]+ f; }' b: `
set honest-service 0
& u+ ~; Z! F5 @2 f! I
$ ]1 f2 {, b" T; V  N
set unhonest-service 0
$ U" U3 Y" Z/ u! J

; N0 a0 r; k& m" ?: Mset oscillation 0

' G1 `3 w) f" b6 ?$ r
8 R/ q; R$ @$ cset rand-dynamic 0
$ M" u/ W: Z- N/ W8 Q# W
end3 e, f6 L0 G' W) `. a" J

$ N* @& {! U' P5 Rto setup-turtles
& \- p6 F9 I& Z+ L/ c7 [" g' ~8 Hset shape "person"; V9 M- d, c3 e0 Y2 k
setxy random-xcor random-ycor
3 q3 S" v- d. C! |8 R% \1 `; {: z9 mset trade-record-one []
6 f$ j; F6 B! I# r6 W

, \+ B" W, B# L9 W# G0 H6 b1 fset trade-record-all n-values people [(list (? + 1) 0 0)] / U; t1 ]  [1 i' Q0 T* W
; `6 H! u5 D2 ^2 r+ q
set trade-record-current []6 }$ F8 Q/ e* N5 ^, M0 e; D" H
set credibility-receive []! k. F. z. X! N; o+ t' b
set local-reputation 0.5
3 S/ C2 P5 X5 Q' eset neighbor-total 0
! p# a. [- f" B9 hset trade-times-total 0
! F, t+ T7 Y  r3 D2 ?  Sset trade-money-total 0
" P  W5 H7 u# a% j: nset customer nobody$ o- X5 ^* e" y7 g* ]! o
set credibility-all n-values people [creat-credibility]5 O, k1 e: ]; R" k% o! F5 x/ E
set credibility n-values people [-1]
6 B6 E. C. x- ~+ m9 [get-color
- _. b3 a" g. @& E! `. {

' b& K! c9 G4 t0 k5 {  gend+ X) T4 L( l% k0 N; E
$ i  u# C& L$ O$ b
to-report creat-credibility
: C4 N2 b! M- _5 L7 mreport n-values people [0.5]
$ D9 l0 g& u. Q( k+ B: hend
4 K) g- y$ f8 W- s8 s* x# ]1 X" v- s( E
to setup-plots7 J# Q! A" i  l) H
7 G) S! L9 p0 Y2 @
set xmax 30

; X; |0 A0 y  C% y& k
7 s- f4 ?% J6 m! h( B  b5 \set ymax 1.0
$ G$ Q# l* E& k
! c) N6 n& |$ h5 x) Q
clear-all-plots

- b+ J1 W- h1 S% X; S9 U3 f+ e& ~; s' }! k6 E6 }
setup-plot1
! E5 a4 x6 T! u8 ^
2 r0 V: `7 L! e3 _- S# y' D0 m
setup-plot2

& t4 G6 Z6 V0 _2 l7 V/ \
, s* d) W+ C) r6 w/ Fsetup-plot3

# C. j: ]% o) [  y& |: ?- Qend
8 X  {$ }5 e9 ^4 O
* ]3 `. r, x1 P! Z;;run time procedures
: s4 Z3 Y0 @# ~/ @* N. f5 g2 x
6 i9 l9 \4 {' m; @7 S+ Fto go1 f* U: ]& ~; d) O1 b% G( l

. H0 Z7 ^& @$ Z$ L1 Uask turtles [do-business]

' L* U; i1 z+ W! M& xend, ~  J. B5 u! _- p0 ^- ^  v

5 z9 |9 J) Q2 Wto do-business
. U7 a' P3 u0 _; J% Z

9 Y) E4 t! ^; |! r1 l/ c( e2 V7 W8 X. V2 O4 B9 m7 i4 `5 N
rt random 360

  C, z8 m# ]5 o" i
! V+ J9 _) B9 m6 C6 E3 V; s! Z* Efd 1
% q- ?+ |7 k8 U' Q$ G  v* `1 w
! K9 _# f* t$ c1 J7 S1 X' C  D  n6 g
ifelse(other turtles-here != nobody)[

2 y! J' q9 M, _* N* Y4 u9 U7 q  a" O, H9 s7 B
set customer one-of other turtles-here

5 M4 |+ H5 t, I; [: u( ~
; g. V# q8 R, l2 D: i1 V;; set [customer] of customer myself

! k8 q% a( c/ f3 E) j* r" Z) k6 l( C& T: s8 o9 L, L$ e; c
set [trade-record-one] of self item (([who] of customer) - 1)9 H4 o- H- o7 O1 X" B
[trade-record-all]of self0 c8 T% V! r- m: [$ g
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 J; `" W: X( Q: l1 ^$ n

1 Z3 P$ @, g8 _- g& l: z! s, Xset [trade-record-one] of customer item (([who] of self) - 1), {+ a/ r4 m! {) M
[trade-record-all]of customer

8 k  Q. L! b3 g, b
) ~7 m6 I6 q1 ?& T/ \set [trade-record-one-len] of self length [trade-record-one] of self

) U0 [$ ]% g+ ~( ~' J; f) G0 b& ~7 y6 a9 b  w6 {
set trade-record-current( list (timer) (random money-upper-limit))

+ ?# S; F" Z, \* C. W& }6 @0 A9 L# J+ f5 R8 ~8 W
ask self [do-trust]7 j5 j$ e* b+ t8 l. Y3 o, g) `+ h
;;
先求ij的信任度
8 [* N* c: u7 i1 h4 U0 T" v! P8 p: M  x7 M4 j
if ([trust-ok] of self)* j# \  B- K6 z; R
;;
根据ij的信任度来决定是否与j进行交易[
" D7 J$ D/ ], L& @; \ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 @2 I6 ~" [0 h; c) m6 n/ p1 m
- J4 p5 }; G- ~7 E9 P[

" L. s) ]! M  u! }/ D% k) Y8 \
* U6 [9 m# A* H2 i8 }) }do-trade

1 L* ]2 y& r- `9 A2 p
, M0 X/ m# y; {& J& hupdate-credibility-ijl
( z; _& E! n! W5 S3 ~1 ^9 f
- I9 j% }3 ~3 u. T# E
update-credibility-list
+ J8 D# C1 D7 ]. ]5 Y& H) [( ~
3 _( R0 J5 G& y+ P5 B

9 }0 l$ y! N2 r% Aupdate-global-reputation-list

) b/ i4 J9 o3 @+ R5 i! L! `( {% o, ?+ n& c
poll-class
( x4 _+ U8 q0 _# C& a, z% P/ `" P+ U
$ H+ e- n# U8 v  Y# n
get-color

% K$ S  l6 U* e
- [; f1 T, ~! O4 n]]
% M6 n; P& x3 g: S) [0 I$ Q# Y
: i) z4 T/ q0 b: y; @0 [;;
如果所得的信任度满足条件,则进行交易, e. ~( y- Y/ W# J# M* S4 @; W9 g1 b

8 r' Z5 @2 |/ E# j1 \[
2 Q1 J+ J( T3 D1 M
' n5 E5 P4 S8 q4 A5 d" V1 t
rt random 360
* x( ~$ Q7 Z% T  j0 V- c% L
" D) s% R+ e+ y0 Q
fd 1
6 A8 e) Q% Z& T+ K% Y, z

' k' Y# f2 U. x6 \/ e& V  _]

" R8 b$ H" c- y7 G$ P0 X1 p5 C, m% e5 Y+ ?
end
0 Z  z  O# P8 @' v8 r6 Z

% Z/ z& @3 x  O( `( Y. z" sto do-trust 8 |& e6 R' A! Q! C8 L8 B
set trust-ok False; c' L  E' R5 `- q  ]; V6 k
, s4 _0 l7 e! b1 S
5 F, Z' z# _2 E& R2 Z7 Z' y
let max-trade-times 0; I. D1 x9 j4 J3 Y  p7 z+ G; c
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]$ q: w8 v$ @, N* i! R
let max-trade-money 0& A$ R4 I+ _+ c( W, z: S0 `3 r% P# J
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  u. R* Z, l0 ?/ R6 alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); f+ E1 |; T. x+ I* N

( C, `4 F8 M5 k- j

6 P2 x) g; p7 Q* O6 _4 E# _3 Gget-global-proportion. W0 |; h- V3 \, e( f$ y" A0 f7 M- H+ v
let trust-value
1 q* C! Y4 Q! c) ^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)

- |1 a8 B7 I" j- e% s+ Dif(trust-value > trade-trust-value)
; E% {* [, `4 ~+ B6 l/ D7 e0 L1 U[set trust-ok true]- _# a, B' ]2 e+ g$ r5 V
end
, Z; v; q( \$ d  ^  `. k
/ p" h+ O# ]* }) Kto get-global-proportion
% R4 C" a# {( z8 B/ ~& o3 ^) zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 n- x" q( m+ Q1 I& D! z6 S[set global-proportion 0]/ O3 m' \. P) {# U
[let i 0# Y+ j- p5 R+ {3 l; c
let sum-money 0+ g8 \2 {' q) t& N6 g' ~
while[ i < people]
% h5 T3 b- i. `8 K# @1 r[& r2 y* N1 _; _; A. q
if( length (item i
6 ]- E$ j( r* @& S) ]  r% {6 v9 s[trade-record-all] of customer) > 3 )
: S$ a0 s7 s5 z# M  |9 G) [8 H
[- Z: P% t7 Q. a( v' P
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))- Y) P+ K, C: r/ G7 I7 U3 l# n) b
]
2 H% [9 v0 l2 g8 E4 `]
! G) D& ?& C+ Wlet j 0
3 i! b% l& C  L* h0 U" Mlet note 0
7 M- I' F/ H% j4 Iwhile[ j < people]
) t. h$ x7 w4 U* W2 h$ P5 l! k& K[0 i7 S# I1 ~0 c+ c9 v# Y
if( length (item i
% A$ L7 N; Q# O2 O3 {[trade-record-all] of customer) > 3 )
+ J( y2 A0 N+ |) `/ f
[! _" F' Y- ?' ^' k9 O9 p6 ]
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" A) j, |2 o( X# j; P$ Y
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 ^' D2 Z! N- I: G' z  G[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( L* ~" j; p# m  D  V* L# }& m& S
]
4 I+ v, s, d0 b) P) f]- K6 f3 `/ t" |" j* L8 y0 {
set global-proportion note
8 a0 |6 Y1 ~9 ^]3 x5 p1 t$ x  P. E
end
: S% [4 u2 j# q& O9 A' s
; j# v" J" S5 m' Sto do-trade: Q: J) N, m1 T
;;
这个过程实际上是给双方作出评价的过程
2 b( _3 I4 U( X0 t! `* z# @* E: s2 n1 C9 Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
7 @( s9 \" O2 s- R2 g( i8 Iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% r3 n, k" H4 D0 i
set trade-record-current lput(timer) trade-record-current2 ?1 M9 ]* b: M8 }. j. |
;;
评价时间1 y1 Q% R2 ^9 X4 J  i2 R# v
ask myself [/ W4 W6 I, f  n! p8 p3 o
update-local-reputation
$ _$ w* ?" r' l4 |set trade-record-current lput([local-reputation] of myself) trade-record-current
4 ~/ R6 [9 {$ w. {/ A7 B+ c]$ B9 T: G& a4 B# ^. b. s8 {8 L* Y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& X$ h, s4 n0 V. O. Z, [- _
;;
将此次交易的记录加入到trade-record-one
* s3 X1 D+ V4 {/ O* xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ C% j. z6 U1 `let note (item 2 trade-record-current )
/ m& \5 P" M) ~: Eset trade-record-current; H. \1 P" H8 g4 b7 Y
(replace-item 2 trade-record-current (item 3 trade-record-current))

6 \6 J+ U) l! |  v7 ], d) Uset trade-record-current1 J$ A  K% H- w; m* E& F2 k0 B- `
(replace-item 3 trade-record-current note)" V7 h: v5 f( M

- Z- p1 q) [. Y  g) H: n
( d3 ^' }4 R' @$ S
ask customer [
! H7 S2 J6 w0 O0 ~! o! e$ `1 z: [' uupdate-local-reputation8 p3 y5 V- \5 K( _# a; q0 F: J6 E  D
set trade-record-current) X$ p& X" v0 t, a. @
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, U: `. E7 }2 H. k, l3 t  n9 Y]8 ^5 P, M4 q1 n) L9 k# d8 b0 q

/ {6 I( C+ D; L+ @, |6 g

/ M5 Y' Z& {% W* ^0 m) eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  E* R1 S/ x# o* X3 \, L+ B) q
7 M1 ^3 Q0 o/ u7 S, t( ?5 I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. p# o" G; p3 };;
将此次交易的记录加入到customertrade-record-all7 w: c" P  j2 D5 _& I% C9 i
end
; P! X' a2 W- O+ J- O  W8 w9 E5 S& c! I6 ^
to update-local-reputation- A% M/ R$ t8 [) q7 r
set [trade-record-one-len] of myself length [trade-record-one] of myself2 V/ e) A& V! D. b( }
0 F2 B: Q) _; k( Y5 U6 }, q1 ]" G% F
, S0 l' m# B6 C
;;if [trade-record-one-len] of myself > 3
8 h. e5 s! s% h$ z8 |' X) W% t
update-neighbor-total% B! |+ t. ?# w  Z4 V3 u$ _% \
;;
更新邻居节点的数目,在此进行
( ?; o' I* [: C# L3 R$ i) slet i 38 i; C! T/ h2 T( e! O
let sum-time 0
) v# ?  j2 G* l6 l' s3 @% lwhile[i < [trade-record-one-len] of myself]
% X& o* [: j; Y$ v9 I. ~[6 g* P4 G. T% h8 C. P, K
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ N( l) L( q+ s4 h: I0 uset i
. c- c! t: t4 p( i + 1)
+ e# }& F3 I$ F$ c; C7 _
]
4 G' V: G9 A! }& I! T+ W5 |let j 33 T0 ~5 ~" X+ o$ g  a6 q! [
let sum-money 0
: r4 l  _8 e% _  dwhile[j < [trade-record-one-len] of myself]
5 z6 s( P9 m$ [1 o( f1 m4 H$ g[
4 s. u" [' B7 S5 W% u9 n% n2 Eset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
2 Y4 n$ D% v! J% vset j9 \, ^1 b- Y; d, Q: G' T
( j + 1)

+ |: `! n& ~+ k" {2 L]
5 R# w$ E8 I* tlet k 3
1 a6 U; a7 n+ L0 [. {* rlet power 0
; F, O8 m* s, C1 N* [! dlet local 0( M6 f, ^  }, Z3 @/ l
while [k <[trade-record-one-len] of myself]! c) \* N* u" K% }
[
' A5 G' Y* Y1 S0 u1 n  Vset 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) 1 e. c' w9 W4 j& i/ N* F
set k (k + 1)$ J5 c" |" G6 d- l8 z' l/ C$ N) C1 T
], n! m5 P$ n+ ]8 K
set [local-reputation] of myself (local)
( R* b, H& Z* |end3 u" i- o! j2 {+ C" B" r8 w

# w) L! |. S+ f& _; W! Nto update-neighbor-total9 `, F" \4 F6 T1 L, N

2 ]% t" Z& u3 W6 @if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], R; g) S: s$ i$ ?8 K1 {

5 g" J6 b4 ]; E' O/ D$ Y
+ r1 c6 E+ J  D9 t: l/ n
end
) \5 O! J, q" f. [( t
- ], v* f# L% [/ Uto update-credibility-ijl 9 A% Y: l5 D" V6 W5 A( D
4 N! I* ]) w& H9 `
;;
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。
# b, K2 b$ Q# H+ ~let l 0% n, T$ \+ C* s' q
while[ l < people ]
( G9 }& |$ w# R7 O) K;;
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
* n; e; g" h9 a$ O/ F$ E[
4 p4 s# ~% W9 _$ ]; |  [let trade-record-one-j-l-len length item l ([trade-record-all] of customer)3 d5 ]# k/ f  |) r; s
if (trade-record-one-j-l-len > 3)
4 y8 h* O( i% q[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  e  h! A8 U' h
let i 3
. q( m+ F8 @" Y. M  X* m1 ^% clet sum-time 0
2 S% R1 a8 Z  w+ o9 _/ L* U: R7 z# _while[i < trade-record-one-len]* ~- d- t( u# r: x, t
[8 n# P  Y. V, E
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
3 A' N) @( G3 Y- ^* V$ s- Fset i' y# Y; z& q5 ^! U& _& G
( i + 1)
# W8 P# C3 M/ O* o% q$ j
]9 v4 K1 a! j5 J$ s4 @
let credibility-i-j-l 0
, T! _' {6 B0 i( b2 n" V; }  N;;i
评价(jjl的评价)1 j, Q1 A5 w7 @
let j 3  }" U! ~% L. f# k% P/ o0 X, Y
let k 4
1 k7 `8 H& Y# d( Qwhile[j < trade-record-one-len]: u) L% I( k% y# V- K% x' N& k- {
[! U* v# d9 h1 ?6 F
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( F, [$ O/ T; M
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). q8 l8 Y8 f1 }7 U0 k% u$ f0 t
set j; V% a6 j# R5 _4 v7 P$ f9 |
( j + 1)
( ?' B) ]0 B% g" h- L: p' t( F8 {
]
% P8 N' f$ Q) R( Xset [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 ))' R6 [2 m, E" P% N1 u5 i: S

1 F* C# f( ?) ~$ T: l1 g' W. D
6 @1 z+ W1 L4 ~! Y- t* g$ w
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))9 k: d& F" l- s9 f$ i; k! y  |
;;
及时更新il的评价质量的评价* F5 [! F+ F. q: H0 m" @: O1 I- b
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% R, w  v. l/ U3 f- \& X" eset l (l + 1)6 }6 B. [% P5 L
]2 R/ t& Y2 A$ ~/ h# f
end
' N! C8 W1 X# Z; [
, f+ @% I+ J) r! ito update-credibility-list
# {# a  ?5 Q2 ~$ slet i 0
$ c7 E2 b2 X5 ?4 u( @, _5 _while[i < people]
8 \: Y, y9 o; t6 v. p[0 o: e9 |! c9 E- \  @3 L' B, M
let j 07 @2 K1 o+ g: H# ~
let note 0* {  I4 ~" ?# b
let k 0/ a  @/ E  O* Z$ y7 n1 V  |" B
;;
计作出过评价的邻居节点的数目" C  G) @9 G# k% g% [
while[j < people]# @# R/ h) G) q
[
: `/ K/ |+ B" j3 B/ bif (item j( [credibility] of turtle (i + 1)) != -1)
9 a5 n7 B9 a6 t9 W;;
判断是否给本turtle的评价质量做出过评价的节点
9 W2 r" C. E7 _" O: M% _! G[set note (note + item j ([credibility]of turtle (i + 1)))- a/ Z" }2 t8 O' R$ v
;;*(exp (-(people - 2)))/(people - 2))]

2 F# R' z6 ^5 Uset k (k + 1)
( Y0 G& P8 g  _$ M; \]
) `6 W) L, w& h; k8 Jset j (j + 1)
% P5 B% b8 D" h  k  P]
! M- _/ Y$ z+ fset note (note *(exp (- (1 / k)))/ k)
6 S# w, \: ~- i+ n% ^7 [+ F* Bset credibility-list (replace-item i credibility-list note)9 V" }6 |$ w. B& k- [
set i (i + 1)
# [8 N6 C4 Y6 \( v5 `]. c$ u$ u6 B% T# v# k; d+ E/ z
end
# i) w  h0 K. J1 M+ J0 {' f/ I* n  M9 n& c1 g! n! Q+ W
to update-global-reputation-list; O% c; |/ d) G" k9 u9 l0 ^5 o" |/ z8 v: u
let j 0' @9 Y' M  s  Z% ?$ c9 n! U1 `& d' ~
while[j < people]
% ^! z0 n8 j2 L  r[5 V( k% T3 S/ P# _) p
let new 0% e  c' \. P* d& Y
;;
暂存新的一个全局声誉8 @4 o, ~; r9 f
let i 0
+ p) u1 `* k* [9 ]3 elet sum-money 0
* a! U. z) f+ |$ Llet credibility-money 0
" u) C& ^6 n/ j! B9 e6 wwhile [i < people]
' l- p8 P; u. S3 f! }7 r, L[8 E) O* m3 a% ]8 R# A
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
; M4 ?; o1 m& E- F% _/ t+ ~. dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  t, Z# ?$ O: Z2 a6 {& ]set i (i + 1)
3 \( X/ p7 O; |2 n]
, l/ n& i* D: l* n# wlet k 09 W* I  O' A2 _& y: _% A
let new1 0( m* d# {9 o1 M1 z
while [k < people]3 `' s! K5 e8 M4 u
[8 i9 x  @. Y6 Y7 H
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)7 X! u9 z& `, ]% B
set k (k + 1)
5 ~7 H! M& Q  t]' q% ]1 v8 n9 o- r
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 S' Q# |. N, t5 s/ R( z( O7 Z+ z  G: Qset global-reputation-list (replace-item j global-reputation-list new)
, L: A9 y! ]: \1 B' \7 Eset j (j + 1)# V1 L( s/ _: p
]1 R: L7 N& }/ g. W6 j
end
* V" n; ?- z* E0 g: G$ @: t* v! o4 c, _  K, _" p
! ]  Y5 k5 x4 ^, w6 U1 a$ e+ s
2 i# L+ o# ~) j
to get-color- K1 f5 S$ u& Q- a" f# r
+ J4 Q/ b3 ^; Y
set color blue
. _- a% N6 I! d, r9 u9 X; s
end$ e0 b- w8 Z6 O# V8 I! _! ]8 M
; }: j( V, P( P5 M
to poll-class
8 J" `% v5 C3 h; Vend
2 @3 c. h( @5 |$ W  b, [7 _1 L/ }  Z+ T6 _' Q/ X: p: @
to setup-plot1* T4 C1 ?! X, T3 z* z  X

# g" {) u' X- S+ Z+ i* N. r& e, gset-current-plot "Trends-of-Local-reputation"

6 R7 l, D( b; W* Z: {8 i' i
7 C$ y% Q; s/ N+ M9 {set-plot-x-range 0 xmax
4 o% r$ E6 c3 S$ Q- f+ c9 N) _' z
" f0 T3 h$ L+ ~& M$ W
set-plot-y-range 0.0 ymax
) Z- Z6 ~1 [( P4 r6 o. ^9 Q' G3 ~
end/ p$ {5 {8 T, F% [1 E0 l

9 K7 R/ u7 B; m3 |5 |to setup-plot2
* Q/ p% u" z5 E9 V) l- q  l# v( G) o+ T2 p5 v5 H4 L4 ]. }0 C! \
set-current-plot "Trends-of-global-reputation"

% l7 V$ o- R: c$ U
9 Q/ i- R, K" ]/ I; A5 Gset-plot-x-range 0 xmax
1 R) g9 n4 b/ a+ {1 q. M7 }2 u
0 q$ p. m3 t) h! e7 i
set-plot-y-range 0.0 ymax

7 ]) @! H) i# s; M) P* cend
( q3 u" ]4 O( n5 V# ~9 m+ {' @  a9 I4 Q  t# S
to setup-plot3
3 p# s) k7 m$ P
" i+ N/ Z/ U8 x& @$ Qset-current-plot "Trends-of-credibility"
! O+ c3 `. |1 K2 I# d1 {

! A" f2 P7 t% j. N3 p  G$ b' ^set-plot-x-range 0 xmax

/ H# q- Y! [2 i8 t% N
1 y% R# g: K& ^- Kset-plot-y-range 0.0 ymax
- o' t  |& U2 `( @' }6 X
end
* |7 w4 `- [/ {' y- U) C  z9 s, z1 d; J6 u+ {! _" |& s3 U' f8 E( B
to do-plots
4 `/ c9 V' J& O, E  v; Y  oset-current-plot "Trends-of-Local-reputation"/ ]9 |  _1 E3 g5 Y2 r
set-current-plot-pen "Honest service"
: Q  S, `; t9 e2 _% A8 W$ nend
. `  t7 {& j; B  t3 @& @
1 d0 V* `  O/ D6 v6 @[ 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.
! c# n. q3 \5 p) Q! |! r0 T& `" g, f, D" h, R$ _
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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