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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:
" H" X; Q) E9 Ito do-business
# e3 Z7 x$ \6 p( a rt random 360/ n7 |( A1 t. A9 i: R
fd 1
+ A/ a, ~) c$ ~2 g& q& a% a ifelse(other turtles-here != nobody)[; H* d% E! o+ [0 G
   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.
& x1 ]) B& f" A) V9 F9 S% d   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 N+ l) D$ g# m0 A- f/ _   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; [5 t: ?) c7 ^/ |9 W
   set [trade-record-one-len] of self length [trade-record-one] of self
- X/ N4 t1 x7 r   set trade-record-current( list (timer) (random money-upper-limit))7 K: z; e% v$ a1 e. X
3 o2 s) V& F9 W
问题的提示如下:0 Q6 x2 n8 y7 Q4 g
1 }+ u  _5 d4 b" E" @" j* I$ }
error while turtle 50 running OF in procedure DO-BUSINESS
) u# }6 \  r3 f+ ~' Q  called by procedure GO% q8 ?' c$ M* T) ?$ W, L
OF expected input to be a turtle agentset or turtle but got NOBODY instead.- c) i9 c5 Y; ?3 }
(halted running of go)
4 I+ Y4 m2 C9 m
% V8 [! j- Z! L5 f- z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 X$ U  U) i) g$ k# s
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
6 `, Q7 l9 z  K% `globals[( X& m! I$ R9 e
xmax
) q8 ?8 V6 Y, fymax
  a; I5 {5 {' U' k3 ^. d7 Tglobal-reputation-list
3 I0 V. X6 ?7 r- Q. q' c2 q0 f# g" @% g- x( Z. k5 p1 V; J4 L
;;
每一个turtle的全局声誉都存在此LIST# [2 x$ H% l. j) J1 e
credibility-list! O! Y- ]2 }" q4 B) L7 _7 _
;;
每一个turtle的评价可信度
3 H8 t# ?0 ~3 Z, [* ]( `$ V- \honest-service. _4 P: K/ ]& I, Z
unhonest-service8 D7 b7 V, q- h& e0 z/ j) B
oscillation4 u$ X8 s3 @  i4 d/ W, k, F3 x
rand-dynamic' O0 p1 M, t$ k* M
]
" q( w6 S% g) X4 w" K. O2 c8 _# A' J# O% S8 w; }  W+ s
turtles-own[+ W; j1 e* G; u( s. f
trade-record-all) R3 u# }# u/ P$ D1 v
;;a list of lists,
trade-record-one组成
  L* F7 Q, K- Strade-record-one5 {- ?8 j% a. I# w: t
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
* P1 Q' r. Z! _/ I" k% O, j5 [' ?( C, c, f! d3 |
;;[
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]]' ~' l; ?& U: J2 U# b0 I5 H* T; G( R
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]* r$ y2 \; ?" ?) Y( [$ O
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' f5 _% @# I% k, R! r% T* {
neighbor-total, j4 H/ r% f% G1 \
;;
记录该turtle的邻居节点的数目+ X2 S# ~  L# e
trade-time5 u+ U  C! X) W  v
;;
当前发生交易的turtle的交易时间- G/ F5 D: E/ P5 B5 l
appraise-give& C; X: _- [1 P
;;
当前发生交易时给出的评价
2 @/ t3 i' T. o% r! N% |! [+ zappraise-receive* N& z/ u# l- I
;;
当前发生交易时收到的评价
) r( ~5 _5 v2 t7 d3 ~( a& {appraise-time* X& J$ d3 E5 U8 Q
;;
当前发生交易时的评价时间
1 u2 E' c% m7 O" C, m2 N( jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 t* r  C$ M( c6 z% m, [trade-times-total
. M1 ^. w. l( x4 e0 Y% u( k;;
与当前turtle的交易总次数: V' w. w) N; A1 @2 C
trade-money-total3 Q$ d) v2 n' `) M) Z  e5 H+ X
;;
与当前turtle的交易总金额4 k& u- D% i$ s- I" n" s2 R
local-reputation: T% U; [2 f# Y1 }( ]1 Z/ W
global-reputation
' j6 m9 T. q4 F0 w6 f  @0 dcredibility
. I# h; I* d. M' m;;
评价可信度,每次交易后都需要更新1 z  Z, g$ |- @3 W" J
credibility-all5 `0 r* T" n) V5 y  ?' b! 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! y5 _! `8 x( \

% U3 c$ D5 a9 _+ P% k4 D# s1 d;;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
* r1 h4 Y  |) G% s- \credibility-one* h7 n# |0 g. ]$ Q9 C
;;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
1 |' N3 O2 j6 y8 t: K; @global-proportion& ~' r$ h+ J  o( i* A0 B0 f, ?8 J
customer0 V) H) j$ _  L1 J& D5 n9 g
customer-no& N( A# M  K" a
trust-ok
; K5 z+ Y, A  j3 J: h" o/ dtrade-record-one-len;;trade-record-one的长度
- H2 `$ V/ m- ]7 }! @' ~1 {, |, I! a2 j]
9 B; G' r2 x* W( h5 R5 }' H, n' f: x+ B4 B9 m  ~! o
;;setup procedure
) y$ Y: f, h2 M7 X9 g# u  ~+ S% c9 {9 H
to setup
3 H! _' i  I: ^9 l4 a" w0 q/ d8 @$ P5 O8 J( L# z8 j' g1 f
ca

' U# j; \: g$ |0 U* R) m. `5 r  \8 |, q
initialize-settings
& J0 a/ `# ]7 A7 W% W: R

! p5 Z$ l( R' Acrt people [setup-turtles]
; Y; W: _3 e7 X8 j; v

) E4 `& i! V5 c. f% I. d' ]+ E+ |reset-timer
9 A! B! F3 [9 i7 R6 u! @
4 i& w& |3 e3 P" X
poll-class

* v! q: V& N/ c# h7 f& h1 i+ ?. h$ x# d7 r% \# S* v$ A
setup-plots
. ]! B* R- I, ^
* F: I1 f7 N  i
do-plots

  E$ `* q. A. ^% ?' P9 D2 m& Qend+ k. Y" z- k. B% @

7 A7 L! C# D. n# B8 `to initialize-settings" {. G1 w& M+ ~$ [) A( ^& W+ n( b
( i' m5 g5 d, Z4 _) d
set global-reputation-list []
% u+ n  b& f( ?
+ O- r& Y7 E% N+ n
set credibility-list n-values people [0.5]
  _8 g4 b. I3 T5 h1 K, \9 r

* o  E& j6 z, A( P0 d, I' aset honest-service 0
0 p: S3 G1 @0 [; i; I( \" |1 m  s

6 B' p7 g: k0 T  D+ |# i  H* z( Xset unhonest-service 0
2 B" D% ~  L  M

) c# M  w9 J4 y" V9 t, iset oscillation 0

1 a' M& m+ z# V7 z$ Y: P
9 G; G$ i1 q* s5 R' V& }, Q7 Uset rand-dynamic 0

2 u0 ^* i# O/ H, fend
1 }2 |: ~& h7 d* S5 _/ M, p: _
% F2 k9 w& g6 [- f1 I2 Eto setup-turtles
- c6 c, M0 U& G, ?set shape "person"' M" {. N5 }& r7 m' u$ C8 R; W
setxy random-xcor random-ycor
3 R: n2 |) ]0 i' ?6 Hset trade-record-one []0 l. g. ]1 n  h  B% k

' y( O7 c' n: Y. rset trade-record-all n-values people [(list (? + 1) 0 0)] ( M; [( W! w; L# M( P
! v/ l& n0 Z+ n3 ~0 e2 }! v# x* m
set trade-record-current []
6 Y) @) S2 P% Z/ p- B5 n3 _set credibility-receive []* ~3 \) k$ v0 o' i
set local-reputation 0.5
! s+ b! t3 x! `; X7 K. R5 K" N$ zset neighbor-total 0" I3 T/ C; r. z( U* d3 t7 B; p8 \
set trade-times-total 08 ~( L1 ~, `7 w# {6 V5 j8 j: y& Y
set trade-money-total 0
5 U) v  C1 F; I% ^1 N. o: x2 j& [set customer nobody
6 d6 G! _2 C, z7 F+ J& l' g/ [set credibility-all n-values people [creat-credibility]8 ~, A! K& a+ K3 C  Z
set credibility n-values people [-1]
8 @& M7 z' j0 hget-color
; U8 {/ P* ?' |* A6 J+ ?
: C& k8 L# {4 M5 W1 E/ I
end9 L9 A+ S0 B& d; n
) ]- `. z7 L" m6 H* w( f
to-report creat-credibility
% W# h; C' }& _$ k7 Greport n-values people [0.5]: j0 E1 y9 V% G& U& v
end1 h$ {) ~5 z( P2 M' h3 o& ?5 b
5 T, q5 {( r1 W4 B
to setup-plots
/ v( H0 q8 [0 _- t% f
% j+ ~- F) J2 m+ b& mset xmax 30
- L% n( p! Z$ V$ \2 B/ l

4 d% m) w  f% F2 t6 s, ^6 J$ g/ T' b& lset ymax 1.0

+ l& w9 A/ v9 A& O- Y1 ^+ m+ ]5 t' O
7 M4 b0 Y2 j+ m" e$ Zclear-all-plots

4 M, |% ?# f" l- L9 z0 U7 l  e  |. y. `4 i4 b; E( q+ N" m- A& C* K/ Z6 ]5 V
setup-plot1

' o1 @$ q$ y! G$ q2 S2 E/ b& J3 f
9 z  D& X5 u8 p# S" G7 L; F  G) w9 m) psetup-plot2
5 x, o" ~( D' h. T' `. s4 i- {4 z

2 K8 V, j3 L6 E1 K/ Ksetup-plot3
/ S  k+ O! B6 L* \) k  o
end- a$ W! T) K+ p1 |5 @( F

; h5 `7 K! U' u2 B6 E" P;;run time procedures
" D- C) |  \  @" i: B6 @' R3 P8 N( J7 W3 d
to go
: J- V9 V( h8 t
! y, J2 c8 T$ g# C+ ^ask turtles [do-business]
  U( B  U& o: N0 A" s7 Q, f
end" r6 ~  I$ x  u4 \

/ k! a. e# o8 B/ Q& I: o0 i& ^7 Bto do-business
* N1 r9 G" N  U- ]
' o& t5 D7 o/ T. ?; x: t

* W- D/ g) n1 Rrt random 360

" `! U& [5 f( ^, r; k8 R# F1 e) q7 x5 x& u
fd 1

1 D% |& d, ?: j! T0 I9 a: t$ k) n( e3 m, X3 e/ x( f2 \
ifelse(other turtles-here != nobody)[
8 p+ S& q/ }& F6 d

, u: X9 Q1 O. V8 `( E9 l4 S, Wset customer one-of other turtles-here

' u. |6 F6 _" `5 a' ~( {' @. U  O/ y3 f1 L0 v3 n
;; set [customer] of customer myself

8 ]6 E: R4 v6 x/ @# J8 j: [- r
1 V0 Z% r, x% ~# Dset [trade-record-one] of self item (([who] of customer) - 1)
# T: z1 x+ W& m[trade-record-all]of self
+ N0 K4 D% g) i2 x5 W& o, s;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- h- c) r* Q, c+ y) K( l+ ]) _

& i& [) y2 l; Y. V; V: Uset [trade-record-one] of customer item (([who] of self) - 1)
% g2 t) R1 H' q8 {% y[trade-record-all]of customer
- c) _1 u1 C& Q9 u, c3 I3 Y; i
% M6 j, N2 \" ], U2 m
set [trade-record-one-len] of self length [trade-record-one] of self

1 B! H# J0 H" L! S" [1 x; O, G' w& Q( n5 }
set trade-record-current( list (timer) (random money-upper-limit))
  T4 ^6 q3 n; H1 V$ }( z! C

) Y$ v1 y/ W+ \# Zask self [do-trust]
2 S, u2 b& {6 e;;
先求ij的信任度% g, C. ]! g3 J: I. ^
6 M- t5 F8 {( s7 `$ D6 `9 ?  d# Y
if ([trust-ok] of self)7 q, G& g% U* N/ h
;;
根据ij的信任度来决定是否与j进行交易[
9 P: ^/ C( Z* {# T3 A4 e& n( wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 _& x: F! |  [/ f4 S/ t# d

0 Q9 S) M) A# A& J[

3 m3 V; Z# R9 T! N1 v% Y8 o- m7 `/ x! g
do-trade

6 z8 ^6 q! B0 @# L; ^+ s7 j8 C) ]. q
update-credibility-ijl

- d) X( [5 l  G3 s4 m& ^3 }6 p' A" a5 d
update-credibility-list
6 T/ F5 C- @# P+ Y" D
. l8 z- k7 T7 }

, M3 \8 D& \0 n' L. z; P( rupdate-global-reputation-list
3 M/ J7 e% z1 D, P
6 V' Q& g" V, z' S6 F7 {) n
poll-class

, J" q. K7 G. O4 X. U/ g) `3 A+ Q# w; U: b1 k9 B
get-color
% |  P; J1 H8 T# m) G/ j

* M, w& t+ H1 v) ]* d# J! s4 n]]. F1 H% K/ s7 c% V& d& J
; G+ ~/ d; f' q7 T: `
;;
如果所得的信任度满足条件,则进行交易' f$ ^! ]  b- b7 b

3 C  I1 w1 y1 X  }2 \[
. J7 c8 s& F6 E! p3 s$ z
; @! L# s) b# l/ H
rt random 360
- Y; b8 \& d5 h: p6 P
7 e* z; G  u& Z0 X0 E0 N
fd 1
$ j' R5 L( T7 V2 x: ]
# m3 d: W( o+ `1 Y
]
1 U  g( ~& _/ [$ d7 S9 w

6 G: {  {: b/ `: Z; M% fend

* {0 N7 [& X6 A0 p# d
$ Q( c# T' ~& C4 d/ L4 Tto do-trust
3 a- E6 |+ Q( i" i7 Aset trust-ok False
, }6 Q( r0 }! N5 ]9 x# L" ~+ u( l- \) c4 \0 p: x: R  b

5 W9 _7 ?1 V9 k7 `let max-trade-times 0
6 g. _) |1 k  g- wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]; x( H8 {  ]/ Y6 B: g4 G5 j
let max-trade-money 05 `5 a- ^( A% L  D; {1 ]/ P, U
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# X9 T) c) f& u; }
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# X& u+ ]3 f$ b/ O

/ T# U! ~9 B, t1 f

# m7 L$ F) M2 I( O  T1 u3 b$ |get-global-proportion  H( e+ \, z  M9 A. t7 U* q6 P
let trust-value
! z6 O  S- @7 P  K) @' n5 ^5 A3 U  glocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
/ ^; m" n4 T7 E) }2 a+ r
if(trust-value > trade-trust-value)* X' {) e- @- k; ?8 X2 O3 ^! Q
[set trust-ok true]
( v5 X" a0 b! X* Cend
, O9 d, p# `2 D& e5 u( Z9 g
7 a4 x' r  R; V4 _3 Z( c* Bto get-global-proportion
7 `4 {: U2 W3 ?3 [" T) Tifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" U; {% A( y# k3 N" K[set global-proportion 0], t: I1 B1 [4 C1 s) B
[let i 0, f' s# l- O0 ]- y$ w
let sum-money 0
: {' ^/ o7 S& D7 K/ e, c- A) v! ewhile[ i < people]  m) t# D0 ~% W1 f% d: r
[
4 a7 y$ G! H' K& D# S: i7 S7 @if( length (item i! f3 `3 P/ R& l9 {" S
[trade-record-all] of customer) > 3 )

1 E$ }  Z* z+ G& Z1 @$ X0 d[
0 B! D5 u/ X0 @- I, J8 nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 h6 u6 v6 U# d  Y! K7 t, f, `! O]
7 N9 H9 ?! [7 [& V6 j7 I2 W8 H]& i( C% s  ^# X$ `
let j 0: U4 p0 O; b& I' z2 }2 g5 ^2 w' i. R* U
let note 0
6 W$ d# s2 w/ _- _; Lwhile[ j < people]3 E* Y) G  a: ?1 L7 v. K; _. O4 L
[
& J# l' h1 I, V! p8 ]4 Q0 |) K5 ?, Pif( length (item i
5 z2 Z7 ~  M7 x% j- }[trade-record-all] of customer) > 3 )

8 X* E' ]7 O9 I$ d& H  p" i[
1 D3 q( l+ Z0 |, X6 b: eifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 \; O, I4 L* N- R6 u
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ I1 g" w7 g: T9 F* |" t
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' w+ G; N4 J, }! Q7 B) ~4 @2 l" _]# q$ s4 O, h6 I1 \0 l2 m5 y
]
$ b2 m- S" M9 v& b( x/ L  T. oset global-proportion note! M0 i! B0 r3 ~* h, ?0 ^! G" Q- X' K8 Y+ ^
]
+ n& F1 p  P$ ]  b/ g! p/ V0 N8 uend
9 r' k& h8 s. h! \7 @( ^/ }# ^4 U; Q& A2 f
to do-trade0 c0 G& l" _  E+ n+ ~
;;
这个过程实际上是给双方作出评价的过程- ?$ u& R) t2 r& J+ k9 {# Y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: [) a# y; W; G, G7 F+ A
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& @( d% ]; F; j( v
set trade-record-current lput(timer) trade-record-current6 |3 T1 [& ]- s/ k* {
;;
评价时间
; Z& a5 H. n- @4 Uask myself [' L0 A# v: t" m
update-local-reputation
* _& _  ~+ ?. t) L! h( ]set trade-record-current lput([local-reputation] of myself) trade-record-current
5 m$ [$ V0 H5 ~- O) ^8 x: f" T8 m]: e% r; b. q! A) x% J
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* @, O! K( y" Q6 y6 E;;
将此次交易的记录加入到trade-record-one
' v( v9 ^9 w# O$ @* b4 r+ j' nset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# {$ b/ ]: |: W- \' S; c% jlet note (item 2 trade-record-current )
+ p9 F. [6 s; Q- [" |set trade-record-current
; g/ G2 k: K% ]/ O$ H" W9 [1 o(replace-item 2 trade-record-current (item 3 trade-record-current))

$ X& d. e4 B5 V  yset trade-record-current# I, o' p& I3 _. J2 I! x9 Z
(replace-item 3 trade-record-current note)6 h: m3 c2 W6 ?# _3 \' S* f
# h) M/ C0 W2 e  G3 M( R

; J5 K- E7 h- Mask customer [* e0 i) q! e- |; Q6 M0 x" G/ w4 R
update-local-reputation2 w0 C7 |$ L4 x# b0 z0 }: n
set trade-record-current
5 |! h9 j* h1 u* O(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 F0 q3 _" V' u
]/ g" g7 D! G  R- U
! v# A+ `: y' N9 B# t
9 [; Z) t( _( b+ ~/ V
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 z  Y" @) b, r
" X- _* d) c; P0 ]; X
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
5 q0 K  Y/ \! g- D% d;;
将此次交易的记录加入到customertrade-record-all
3 H4 {% a; _) f  |- {6 r: v+ ~end' m3 n. }# K5 ~8 r$ G  v" P8 |& A7 v

$ Q* ?3 N4 n+ a' a# G' G$ nto update-local-reputation1 v  f, b: `5 v. I6 b
set [trade-record-one-len] of myself length [trade-record-one] of myself
# g, s6 M# H( ?; ^( G1 Q
, u1 M+ n  l  g1 B. z- Z. G# T7 A6 t9 l2 l
;;if [trade-record-one-len] of myself > 3

: F0 I4 o, E" N2 h( t6 D/ Rupdate-neighbor-total0 z" q  X3 Q; z, L; V% {( ]
;;
更新邻居节点的数目,在此进行- o% X- j  D" X+ P; }
let i 3
4 S! G# T& Z2 Q- j+ n  ?let sum-time 01 p$ E. h) m3 n* ~! @! Z6 U+ `9 L- _& r
while[i < [trade-record-one-len] of myself]" c. _! K, B1 T9 E
[/ f. \9 P& b& W8 K& s+ ^7 L. t
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( q2 H. B$ z. H* v- y
set i/ y0 B% B. c& {
( i + 1)
6 o* ]6 m, A) Y" y- c$ T& R
]* `0 z+ Z' o: [; k7 y+ D; F) i
let j 3
3 c( D) U% t: @7 n) W6 b" h& Rlet sum-money 01 x1 {  f6 C& v& f  m
while[j < [trade-record-one-len] of myself]
" m0 F5 J. M" M. f[4 B9 ?% g" s/ l' w  `
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)* b/ X8 X1 q( ~& T4 a1 l8 @, p
set j" N  i" h: |; L; e9 h- {& p6 H) U
( j + 1)

6 p9 z( x/ E  E5 S- c]0 d& S, M/ Q$ F! k4 p/ U+ @
let k 3& W- j( K. C# w0 U( R
let power 0. n: W7 Q8 b! o  ~
let local 0  q; G  {6 X! g$ g  _" X* s
while [k <[trade-record-one-len] of myself]
/ I2 x( c  z( Z. N' B, z[5 M8 S5 Z% m9 R8 [- ~
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) 4 j3 n- a2 ~' F+ ~8 s1 a$ Z
set k (k + 1)2 X: i5 g  n( z: g- E
]1 ^2 T% W& k: ~$ i
set [local-reputation] of myself (local)1 }& x3 V  |% e4 {- Z
end  h2 m1 D- Q$ O

" W: C9 D- V7 P& `" n$ h! ]to update-neighbor-total. [. C; F: w1 `- l8 y/ ^& C$ |- D

* n3 d) m3 O* I# ]' S3 Lif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]3 u2 K" l9 q$ B/ J( Y
/ F8 B, ~" }. y4 y* z. S9 g+ h
0 |4 B, I  H0 h3 @
end
! x3 M/ M: g  Q6 o+ I4 w8 h6 X. A) U5 K9 D; y: q
to update-credibility-ijl
; O' x( T, u3 D0 h, Y# t# K+ H5 J- ]& |* R! T# |# y' }
;;
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。
/ ^# T! G9 @& i2 s1 clet l 0- A. A2 t' B0 h8 \9 X
while[ l < people ]
! `( [8 u' [2 i3 a" |( N, 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
7 v, Y. \( N, f% }/ E" u" l, t[
7 x2 {1 @9 A1 k7 clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)( F0 Y1 x) \8 V) R5 L5 v# a
if (trade-record-one-j-l-len > 3)$ Z% V/ I$ i4 E+ M2 ^
[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
1 ]; m7 W  _  r9 flet i 3
% K5 g" U# x% plet sum-time 0' E0 Y& H, @: n5 C
while[i < trade-record-one-len]
) q6 [( e( H" C[
& d5 ?' I) h7 i0 D$ Q3 Lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 r5 s3 ~- X( t8 h* u# S8 Q& `5 v
set i* p2 a1 U; b5 C) W& P, @
( i + 1)

: h/ }0 m  L1 ~! P% i4 d) l]
) t6 h7 c# M# @9 i* {" Vlet credibility-i-j-l 01 s' V( A# h" z
;;i
评价(jjl的评价)0 ?' F% p# r( F
let j 30 G# P9 b5 A6 a0 j+ \9 h' ?% }
let k 4
+ `- A7 g( j2 B% u& Xwhile[j < trade-record-one-len]( S6 s  I6 z6 D4 }1 W9 ]
[
$ {/ |" {% C# r7 Q- I* s4 n( k1 Pwhile [((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; u3 h6 i* `# A
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)
* L# r0 m- b$ [' ~set j
. s# y* L" C, e& j( j + 1)

3 q6 a3 F( W0 b7 n]
/ J& S& }2 E  K3 x; R: g1 dset [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 ))
/ u9 F! b  F3 @7 g! a" a; C  W; Z. D; `; }0 H* ?# @/ Q
9 ]+ p! M$ }" `7 F3 y1 p
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, c; J1 N9 v% E! j;;
及时更新il的评价质量的评价
7 W9 q, q9 g: \set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 A6 H2 A& t- J2 Z! Zset l (l + 1)
5 w" A. V# Q" W' y]  W. S9 i' k# y$ |4 ^. f7 E# v7 A$ z
end" }% L% n  }% D8 ]. M
$ o1 C  N9 c/ L! T1 B
to update-credibility-list
  P' Z% v2 u! O1 N. ?let i 0
; J4 v/ r5 K# Jwhile[i < people]
. u9 a! s) X" {- z- ][' T* _! g6 l0 l: c5 i
let j 0& k1 e# w( `- E7 m1 ~
let note 0
, o7 L& l+ w9 _4 g7 `let k 01 h& ?1 Q/ Q9 D7 q2 z, M, Y+ c
;;
计作出过评价的邻居节点的数目/ F' R! t5 B9 A5 ?4 D& j. V# C
while[j < people], L) H3 \  W; \' r$ O6 e& L5 B! r: K
[
2 a) n4 g& \1 J, iif (item j( [credibility] of turtle (i + 1)) != -1)
& h: s, w; _" ?$ t! r;;
判断是否给本turtle的评价质量做出过评价的节点
) F: h3 J- q1 v1 u[set note (note + item j ([credibility]of turtle (i + 1)))! t9 K/ u5 m; H0 b  F6 s  p
;;*(exp (-(people - 2)))/(people - 2))]
% p* X: n, M9 T! }2 L+ s! Z* i
set k (k + 1)) k0 P' Q& C+ x
]
, r' P/ \- l/ p- C$ d8 x. Y1 xset j (j + 1)1 Y8 F0 N' Y  `, z
]8 N/ u$ o( Z8 T+ P% V. R, L
set note (note *(exp (- (1 / k)))/ k)
) ]8 g) H, N4 y6 l& B! c. [set credibility-list (replace-item i credibility-list note)  n9 x5 s  x, L8 X- B
set i (i + 1)
/ R. b8 w+ x$ h# s+ Z: d: U- j# p6 a% C]
- i! Z9 t5 A  ~6 E8 qend5 g' x; J( C. e2 D
0 z. i: z- g) g0 f1 ]+ ~) z3 i& f' n6 M
to update-global-reputation-list
  a4 D* M: u6 {9 A  I: Hlet j 0
3 O/ D0 I- u+ ywhile[j < people]
6 I4 k( x) m) ?  p8 V3 ^/ Z[5 l+ |+ {. v5 {
let new 0
, x6 s3 f4 `- x& U;;
暂存新的一个全局声誉
# D* Y; @$ T  |  y. dlet i 0
; w( J/ I) o9 `* Olet sum-money 03 B6 r6 w* ^; N# {* K
let credibility-money 0" B# p& n3 e: E. C* c6 R
while [i < people]/ @- z$ X' i# k" x8 @/ s) z
[- x* Y4 G! i2 u# W: }9 u3 [0 J* o: d" g
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))# n. _% u, E* X7 K) ^) X
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 o4 Q- G& A# j' R$ ]8 {set i (i + 1)& s& e. O3 G3 ?7 S' V+ `5 H& _
]1 O: o& o, y2 S
let k 0
+ n/ \. O$ x  o' d0 Wlet new1 0
  a- q+ Q' p7 l" R( f: Pwhile [k < people]
, W. B% U1 c$ N# u" {[
1 z( I$ ?- U2 u; h' u" Eset 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)
% C" z0 k6 a$ n! `& Cset k (k + 1)) x( y$ y; f- Q$ B
]
) g' w1 [, u9 h" u1 k; S) D7 F; a+ rset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 w. J2 T) V- Z( P: N3 L/ Dset global-reputation-list (replace-item j global-reputation-list new)0 F% Z, c+ @) n
set j (j + 1)1 @. w- p3 r2 _4 P/ Y& ]3 k
]
1 {( P( R# z7 aend
' y/ Q* @# A2 Y0 ?, I9 M2 V8 a: V% k9 S( J% z. |
  j8 o0 G* K7 v1 C

" b( q# u" }0 B7 e: \7 eto get-color
: K" o/ s( O' h" D4 J* O1 ~5 }, _. q2 o; [- [/ b& z
set color blue

' g/ w% ?! X  t1 S6 `/ X. Lend9 h& v5 |5 q0 g: \( W) _, y0 v
/ b/ w# B0 U2 B9 |
to poll-class
; D: a& @+ q) @1 S7 P, Y$ ^end0 E- \. V7 T) G8 |/ D
' v7 `# g# ~$ P$ V/ `( g+ ~* J
to setup-plot1
# ]3 u3 q8 q5 {3 Z* J( t3 G6 N' R: s) m0 N* {4 ^
set-current-plot "Trends-of-Local-reputation"

7 t: N4 n+ W8 d3 C
1 B/ `' p7 a$ s0 J$ J3 [set-plot-x-range 0 xmax
' d. h2 S$ D0 B& A9 G" N

/ w* _  v$ e' q! Y# y0 N. pset-plot-y-range 0.0 ymax

2 ~3 y3 j$ Z3 T; @/ X) _# Iend" e1 F. F9 A; m: N

, D* c6 N+ h4 {7 J6 v# J& e  Hto setup-plot2
# X2 p' c9 \1 T, a& F6 s8 d7 N/ T0 i0 W; x2 Y1 @
set-current-plot "Trends-of-global-reputation"

  `5 \: i0 n, g2 ]7 a! k5 m/ C& G
) a+ D6 q4 s1 m* H  o5 z8 Iset-plot-x-range 0 xmax
. u! [4 N/ x! y
$ N6 U" A* k( D  A& m3 l
set-plot-y-range 0.0 ymax

: Q; M% H- `6 p5 r* M- e- t, [end! q# K% N9 d: f; _

9 \" m) \3 ^* E* vto setup-plot3
! t3 {+ r- k* Q9 {3 f& p- ~' w& N" t* _6 f; P! Q
set-current-plot "Trends-of-credibility"

1 D' Y! Q4 p6 X/ Y# o4 V" k$ i8 K5 n' M$ _9 f" @* e6 D8 a: U" @6 X
set-plot-x-range 0 xmax

3 h" g  k; v0 k8 J
4 v1 u+ ]! g$ c/ _% [set-plot-y-range 0.0 ymax

$ Y/ j6 z% T: T9 j+ I: w$ [end
$ q. C, S6 z9 l1 r, u2 I& ?9 Z2 R! {
to do-plots6 q4 O1 T: C5 t/ ~" p. |# I
set-current-plot "Trends-of-Local-reputation"* S" H- O9 ^7 r, N- D4 E5 u- }
set-current-plot-pen "Honest service"6 O) Y+ @. {/ X- `
end: C9 F5 _7 {5 T. f
; Z" e2 O. e5 u5 p0 K6 C8 i9 |+ v
[ 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.
% a: \7 j4 h7 R- C; ]0 |
- K7 p4 L* F! j/ Z" B8 h% i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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