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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:0 G% s# B& S( D7 D5 d
to do-business : f" t0 e4 s7 u0 Z9 X" G
rt random 360* g; _9 G$ ^( _' @0 B
fd 11 V  \! d2 K3 u% c2 U
ifelse(other turtles-here != nobody)[
, }, X: k" J& U  y3 L* P   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.
' G- ^( k/ K. s+ Q   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
% R* w9 `5 x1 Y; k( v/ y7 L   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
- a% ~$ k( A2 |( t/ Q  @   set [trade-record-one-len] of self length [trade-record-one] of self& c: I. X/ t5 X/ P8 I  f
   set trade-record-current( list (timer) (random money-upper-limit))
$ `3 k- C  w$ n( W9 C/ `: V
/ _# `5 R: `4 D8 L$ ]  j问题的提示如下:
0 I- ^0 s* L6 W' M$ [( [# w& q: q; m* B) f# U: ]" {! H7 y
error while turtle 50 running OF in procedure DO-BUSINESS# B" y  Y- [  |1 L7 ^
  called by procedure GO
9 W9 z! Z' K* g& mOF expected input to be a turtle agentset or turtle but got NOBODY instead.( \- ?# ^0 e, W; L8 G
(halted running of go)
* T6 G7 H6 D" e+ {4 s9 ?
& q6 Z' ^: z0 c+ K  `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~~2 `2 z3 }: d2 `7 S3 q
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# f  S& C% Q$ _2 M% z$ g* e' Q
globals[8 w8 t/ }4 Y# l7 X# H& Z
xmax
1 X9 M# @- [. {& y) H# G2 Z  _* aymax$ q' C- b( j) y  s
global-reputation-list5 v' D2 V$ @2 T: b0 p7 \: N$ T; L
7 m0 r- P$ J) @5 d# u
;;
每一个turtle的全局声誉都存在此LIST' a( ?# r4 U! i( k7 j8 R' x
credibility-list
; V" _: q$ R5 j, };;
每一个turtle的评价可信度
' [8 z# ?8 U% k0 p" U5 m+ D  jhonest-service$ u, s0 X$ G: H" O1 M* n) Q8 ]
unhonest-service
& ?& Q- c9 m  Q7 Q8 Goscillation) W0 Q2 M. B5 U; G
rand-dynamic* `  g+ q8 b' q2 P
], D- x3 e. B" b; P; S. Q$ D
8 _$ ?/ _* [4 }6 l5 U. t) \& P" R
turtles-own[( @; J* l# e0 S5 `- d) l
trade-record-all- I8 `' R* h) X
;;a list of lists,
trade-record-one组成. E' [. J4 Y7 V
trade-record-one
4 v: `3 x* ^9 u/ T7 U( p; }3 L;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( i* s$ O$ x% o/ y! C2 a" J/ x

. F) A; g# C: h6 {$ w;;[
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]]
1 H1 V7 C5 Q- m. ]+ y5 ntrade-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]
7 G# L3 {$ X+ _1 f3 E( h2 Ccredibility-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
7 k' d. n, n% [, q- \9 Pneighbor-total5 j4 a+ ]. D4 d: b
;;
记录该turtle的邻居节点的数目6 r& i6 u$ @2 |7 h8 e' ?
trade-time
2 z- V# @$ a  p* C;;
当前发生交易的turtle的交易时间
! ^% q, Y$ F1 X! c! n! n7 dappraise-give
' z1 W" x% s, n* B;;
当前发生交易时给出的评价3 S1 N5 b# k/ K9 a8 K
appraise-receive' ?% B( Z% z5 L% {# L$ d
;;
当前发生交易时收到的评价
+ c( @/ b& }' r: u, Oappraise-time* N0 U5 y3 _: n! X, F& V7 k
;;
当前发生交易时的评价时间- k$ Z  d: A. {
local-reputation-now;;此次交易后相对于对方turtle的局部声誉0 Q( c9 h2 M$ b
trade-times-total! r7 P; {5 L6 {% E+ `, q
;;
与当前turtle的交易总次数
; J; @% r# M& v2 `trade-money-total
% L: ?" D4 x4 y- M9 G- E% ?' `;;
与当前turtle的交易总金额
8 U  P6 |! r8 W, clocal-reputation
- q  K% n3 Q$ y5 _8 U/ p1 J, X& qglobal-reputation
: W3 A3 R. a. L# }% a/ M! m$ T0 Gcredibility* h6 H( R7 @/ c/ c# C
;;
评价可信度,每次交易后都需要更新% K7 Q1 D9 N! ]/ s
credibility-all
/ S+ ^  z1 @1 I" s: J;;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
" a' W( k- p" K. p6 ~
6 `9 j' G" f; j, a;;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0.50 I8 S6 ]4 e  `; W. m
credibility-one% [' i1 y. }5 S2 Q5 y4 z
;;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 E6 i* ]7 s
global-proportion5 `0 O5 Q" e7 \. |1 k
customer
9 J9 C$ J5 O1 B( q) B) Hcustomer-no2 Y3 Y" K+ c% y, A- S/ s& `! d4 X. ~
trust-ok
  `1 u0 A" Q  e  e; Ntrade-record-one-len;;trade-record-one的长度
% v- {$ r- L1 u- d. F/ ^]
) ~8 Y$ d" E( |1 G% z
" g3 f3 q3 T6 j5 p;;setup procedure
- n$ d: {% \  K
$ o. p3 X8 V/ pto setup  [. f4 U, d& O* t" Q

+ t4 g. |6 }2 T" ica
/ f4 V6 h4 ?# A
4 Y' U" R$ X, i3 x1 W
initialize-settings

. O2 ?# C% w( G8 W' ]$ j( u4 H" a1 D
crt people [setup-turtles]

) a: C  ]. ?- d" z9 X* y! ]/ O" H+ ^" C9 r9 d. E/ q, d
reset-timer
. w1 p7 i) r8 U
  b+ M$ s2 E1 ?5 l' M% C7 F
poll-class
1 S5 a' K4 x$ L" {) u# l

( P0 P4 v3 K4 ~3 B, z( ysetup-plots
( Q6 M# a$ U; J; u% l  M

6 L" L/ M% `9 O4 e9 ado-plots

$ c& K# ], k0 X2 R+ g- J2 gend
, O8 y2 }& E: [& g" G4 l3 x$ R6 J5 N& g3 T4 x4 c1 V5 S
to initialize-settings; M- @0 u1 I% ~

4 J* J5 w. N2 Hset global-reputation-list []
4 [" U. J0 i. _# }% @4 F

; ?" N) ]. W# ^. ]) Rset credibility-list n-values people [0.5]

& J# Z1 ^5 I. k# @( ~1 }* n7 N$ @( n% ^$ m* q$ O1 D
set honest-service 0
; f8 p# X  T# ]  o2 G! U

8 [, t3 `  S* Q2 X/ Gset unhonest-service 0

* c5 O1 j" t# k# }9 m5 Q5 u2 ]5 a& x- g4 R/ G
set oscillation 0
, `4 V( b) b+ S' V' E: o$ W

0 a* h3 O8 D) ^8 E0 eset rand-dynamic 0

- q" V( s: i# {! S6 `* }end; o" y- |9 K: v" R7 O$ p& k/ g! {

1 J8 H1 d3 T4 W! E+ wto setup-turtles
: Q6 a7 f& i! ^- O. O% Q, vset shape "person"4 I; O% K6 w, J" [8 ^
setxy random-xcor random-ycor
0 V: V& K! a% Q- x7 sset trade-record-one []: w& j# i5 R! X" B

! O" c9 }( P" j. M  }2 fset trade-record-all n-values people [(list (? + 1) 0 0)]
8 e% A6 B4 p+ `/ v4 ~% C4 u( ?, M

" e: z6 Z' l2 T2 c4 o$ Xset trade-record-current [], A0 U7 E7 r9 f' d
set credibility-receive []
2 [* k# S' ^- k7 }0 K1 q# |set local-reputation 0.5
! [! Y. T+ x1 h" Sset neighbor-total 0
" ?1 X" z" A5 ]8 G* z$ ?4 `set trade-times-total 0
" g, C7 K( \) e' _5 B) T4 Qset trade-money-total 0+ r5 k2 c5 L3 y% U) A& L& I
set customer nobody
' n2 i* v, m1 r) ^3 I+ L$ X: bset credibility-all n-values people [creat-credibility]7 b. U3 s1 ?  W+ f: x( h9 A$ D
set credibility n-values people [-1]
: x" v; p( I. p: v$ Cget-color
+ A6 |3 S. _( A; Y3 Y. X/ S
. z+ f+ h, F  g/ D7 h
end
( d+ A  R4 v5 g, _: ]; V
$ t6 n; T. i. M( S  m& H' K4 M5 F& Pto-report creat-credibility3 w* k& o* o6 M+ c. a; G- n4 I
report n-values people [0.5]4 M* b7 w- v! ]4 i" }4 W
end! ~! o& V6 t& e) l9 t1 [

- z; E; o) t( t5 e# g6 Rto setup-plots+ V) q3 R) l* x0 w! y& u
- P5 o) q5 y7 p. f
set xmax 30
7 m) @: M* _) M4 ^6 M
3 W" [0 v2 O8 V' L" d+ P
set ymax 1.0
8 w; v1 x5 y! g5 D
# e0 O3 d! \/ U7 z- q! h
clear-all-plots

4 F$ E5 u( W: _; _0 ~  E0 n+ k' J; N  o% Q
setup-plot1
; {$ a* E& v6 g4 }% a; s
" X& W/ h3 _1 {  M4 `
setup-plot2

9 ]5 b0 f/ p5 n3 N9 g. O! B; d" B0 y% [. \
setup-plot3
( c7 M+ t* @9 F
end( S/ ?7 y3 D7 F! Z( ?7 h1 t6 K7 G

+ @: n- d  R( N) Z7 b% U;;run time procedures" f8 _$ u. b: ?8 r" J9 {

/ b4 N  x! W0 J( k) S. [to go
) ^2 m" s; M3 i; b+ i* k: l
+ H1 P! n2 D1 v8 q' `( k' u$ Wask turtles [do-business]
, q; A- s- f  G* [; [
end, d. R0 j- Z1 z. h/ X% f
, }& ]( t' j; ^; ?. ?# u
to do-business
0 ^  _/ A7 ?5 Z6 s! f7 P

% B4 K. z: W) j  Y- {9 k2 `! G+ L( o2 O/ a/ E$ M
rt random 360

% r* S2 l$ V6 y2 s- H3 j9 g1 Q( V. a& b% p0 Y% H. m
fd 1

; Z6 {# }% \1 ]/ y6 H2 s; T' Y; m- v+ H5 \4 u6 b0 K& k
ifelse(other turtles-here != nobody)[
9 k) g+ S0 b: i- p3 V; n# @. n

% F7 `+ b; C, X6 e. U2 }9 S; g# Wset customer one-of other turtles-here

! l: f1 m8 X( K1 i; U( B. U. \% W& E* L! J+ |9 N9 P
;; set [customer] of customer myself

: C: \4 u. ]  H# s. @2 W
( D& A  g. O" l; fset [trade-record-one] of self item (([who] of customer) - 1)0 [9 D) n% u/ @) p. M
[trade-record-all]of self
; @& m1 J& z2 c! {! p;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% b/ Q0 L. r9 m2 I! b
* W- r& A2 ]: Zset [trade-record-one] of customer item (([who] of self) - 1)
' d% V* P& v2 [2 X/ Y7 B: X9 Z[trade-record-all]of customer

5 G2 z0 v% W( {1 m4 ~+ x4 P$ k$ u1 Y* h& u) A- e; y
set [trade-record-one-len] of self length [trade-record-one] of self
% }8 n2 ~1 e0 g
& u9 }" J% W! }3 z0 [- K
set trade-record-current( list (timer) (random money-upper-limit))

% [: f$ o8 }# w, e) H; z" k; \# J) u- u: U4 W8 I, m2 A
ask self [do-trust]
; S3 i+ ^0 |+ |$ }$ m# q, |;;
先求ij的信任度
2 L; i6 h5 f# S7 r3 y, k% @, h
. F, C* H$ i: A: K# [3 nif ([trust-ok] of self)
0 d% X7 c6 ]4 H8 v" |& a7 _;;
根据ij的信任度来决定是否与j进行交易[
8 d  q0 V: F9 A) Z* x% pask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 ?- Y; @4 O! n7 c) F
" ~: a1 F, K# p1 F* E& D9 F9 I  e[
) Z- d: H- C" {( S, J: @
/ `0 Z2 r# }5 V( e
do-trade
7 [7 K/ }+ H" N' k
" D! ~5 J9 F# x/ T
update-credibility-ijl

; g( w# t* ^1 U( d- R) H
4 B6 V1 r' ~# p& Jupdate-credibility-list+ G8 K6 }& q$ l, ^9 i  X% r% P

) ^. ^" T$ O' n, H7 z  O6 T1 x# e& z; q- N
update-global-reputation-list
# k) {. Y5 G1 ?7 S5 ?

. D" T  H- a) q, t# F/ y2 Dpoll-class

3 P# N) K( X6 o7 Q# p- G8 n  s& a- [' u% V1 |
get-color

$ u- Y' g3 S4 y5 }% r. S8 M/ ~/ T6 q4 C1 m6 u- G
]]5 C$ o  A+ d+ s8 N- E

$ Z6 k( ]  g8 C0 ]) |% k* C;;
如果所得的信任度满足条件,则进行交易' w7 x- [' f" h0 T  x

& q4 R& g( c, \" W7 v% O. e[
) s4 ]; j$ k! T; D5 i+ _( t* ^

. B6 [; T! W& M4 k* M. v4 Rrt random 360

: ~( y+ N/ v: D& R7 Z
! R9 C! h8 O6 D* Ofd 1

- k# t0 e6 F' A+ y! f: w, a, A& J% T3 P6 Z: P8 w5 f% K
]

* y6 q6 v" I/ I& W/ ~/ l/ `; s5 o; d" N
end
" H" ]4 g% T% g8 d5 @* A% j/ s

9 }2 A, x/ s1 V, U: H6 c, m: Cto do-trust 0 a8 q0 a# h  x, K, X
set trust-ok False" j. \; {5 l; @" G6 M+ w/ i

! k# z& l% ~2 {! B
% [, |7 g+ k- J: f) X+ q
let max-trade-times 0
7 _0 o/ r; o" }foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 i, j1 n# s3 c( J. R0 {" ]6 G9 llet max-trade-money 0
2 X5 L3 D  S) z, g# f2 ]foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], ?* T8 F) u9 z3 C
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ j0 s' x/ Q2 p! A9 n+ N

: h& T9 W- @: T4 J
7 E" \0 g/ ~" t, V
get-global-proportion
& P) }1 t5 t8 }  j3 {' Nlet trust-value6 |' a  }. z9 z/ T
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)
2 j! f& @0 _* I! P7 P- [
if(trust-value > trade-trust-value): A7 a+ q: y4 v4 V$ [
[set trust-ok true]0 `5 C- [" w% J8 c
end
1 c4 R: D! v. N+ x. I. V- w. \( o$ ?2 a$ k0 g& `! K7 Y% \
to get-global-proportion* g5 c: @, D1 L5 E& M
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)& H1 U1 D* B7 V4 ?8 z2 `" P
[set global-proportion 0]
  M& h. u( d8 l% H4 E1 t7 q[let i 00 H2 F; }# e( J; [# T2 X7 D
let sum-money 03 F: P, j4 _3 z8 T8 K1 Y% Q8 `
while[ i < people]
5 x" a9 m" @% w* b5 N/ i[
0 o5 l2 c3 _4 G3 Hif( length (item i9 I7 ~3 m1 F0 |3 K0 a6 @
[trade-record-all] of customer) > 3 )

% q& N- T% Q$ N7 _* r[! U: I; X2 W4 y- ^0 E0 ~! Z- O) L
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( l( Q; _" Y' k]
* Z1 s0 [& n3 T/ X: N]
. A8 l: b( x0 a3 G/ d( ^let j 0
1 P* C1 y  {4 l0 G2 j7 Qlet note 0# I- W4 {8 V8 ^. L5 t+ _
while[ j < people]
# U, G8 T  @* I[
. X& Y* k' K. l9 }, ]if( length (item i, R% h$ c+ g# V# s
[trade-record-all] of customer) > 3 )

; a6 `$ q  X; \* _+ P[
1 i9 m* b; [5 Y9 eifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 @$ |( x* f; v6 j7 K* v[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" E9 z/ p- d* c! t
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 i& J* L8 e9 ^# @) b: p+ q8 S]  x. |: P: S! M8 q1 l0 }3 r( m* z
]
7 X$ |: S- ]7 F- J% n$ P" hset global-proportion note
. H* w# _9 z, \& j]$ f4 C5 G5 Z) J7 ^2 A. v/ d
end
' V- D3 [7 b! B, S2 F( c) L# h. N4 p" _' G" X1 v1 o$ Z$ F
to do-trade
, R. u- h, P; Y8 p;;
这个过程实际上是给双方作出评价的过程
+ h7 z7 [6 P8 m" R3 B. N8 N; e( S; ~set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
4 z! j& U0 W  k2 x. J7 bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
+ z( Q* U" o4 Z) W% mset trade-record-current lput(timer) trade-record-current! L6 J/ o6 B$ Q. Z' r+ i
;;
评价时间) i7 I! I( U9 l' L
ask myself [$ @5 J% o4 Z6 B" `1 Z
update-local-reputation/ o% `: m1 {# l$ \2 U
set trade-record-current lput([local-reputation] of myself) trade-record-current
) v! d1 t9 ~6 h/ i]* y1 C" N; T9 y  j/ L/ }
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 b6 \3 ~  B* \4 D0 w4 E" K. O;;
将此次交易的记录加入到trade-record-one
  L( \1 y: }  `" bset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself): o, ^4 D/ ^5 Z  n
let note (item 2 trade-record-current )5 [' Y  H- k4 L) `
set trade-record-current
* r# s. {* _. r" a" B: i# V" X- p(replace-item 2 trade-record-current (item 3 trade-record-current))
9 e' v% T- ]2 Q* w. K5 |+ y# |
set trade-record-current
* X! r! E% ~; m# d0 F: P$ F% l(replace-item 3 trade-record-current note)
: {2 P! I; q8 g4 T
& H4 R+ j3 [% W1 }5 e9 Y5 |
3 G2 X- Q  [( {+ S$ [" {2 w, l; N. ~  r
ask customer [
: u: c2 Q% n0 X/ B5 m. Z6 hupdate-local-reputation
. s# Z) Q( E7 c9 ]set trade-record-current
- j1 G9 O+ [3 w1 l0 V' S0 _(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. H8 D) W4 @, h2 ^+ u]& N2 P0 a2 s7 q" ^/ `, x5 @

/ L% v7 r' V0 c! y5 e1 o
! B& t8 O2 r9 ^. U% R& H
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer8 `! x% O" _' W

, {& K3 R3 }1 T+ W* lset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ O3 V5 _* F: @3 M1 E0 v. _  n% b;;
将此次交易的记录加入到customertrade-record-all- R' n4 V; r# M$ Y. R
end
) c' g2 K; l% C9 ?0 {& n2 B8 q  Y+ i
. w  y: b! I- v+ q! s& Lto update-local-reputation
% `3 y8 @' B- N  g0 n/ K, `set [trade-record-one-len] of myself length [trade-record-one] of myself
# Y1 H7 r  u2 ?3 }1 \7 O% k9 k6 ^8 C! y

: ^4 V+ C7 Q# ]: x6 h+ t: W  N;;if [trade-record-one-len] of myself > 3
4 C. E& `8 ]! q' H4 h  q4 ~$ j, U
update-neighbor-total
* W' r) n- Z7 r8 P4 H, d* \( g;;
更新邻居节点的数目,在此进行" C; P' y3 U1 M, t
let i 3
3 |# \7 r2 s% Z  O! k9 |4 {3 ilet sum-time 0
6 @; [- P* s: c1 z$ m  U" A) Q4 r' A4 ewhile[i < [trade-record-one-len] of myself]
' D- {8 ^: \9 i* V/ K7 ~[
" A  J  U" y( q: V4 q2 O. \set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* A/ L6 Y$ c- L3 t
set i
% J/ r! ?3 a8 W3 e3 z( i + 1)

! g% u( q; X# d& @& V1 U: []6 r# \/ O8 ?, z+ ^' g
let j 35 }0 o+ W" K; b) j7 m
let sum-money 0
( g5 v1 c. X6 v9 |- K  Fwhile[j < [trade-record-one-len] of myself]
+ K8 ?, a6 ^" G+ Y0 W[4 F! s; w  c9 O4 B' r% S
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)
! ]  R7 W1 ]! X' Wset j2 g8 @/ R3 D3 S" R
( j + 1)

; \/ L7 h7 y1 x: u]" G0 G% s+ v* V: \8 J0 x9 P
let k 3
/ m6 J2 I& g1 T1 ?let power 01 C& _) S' I9 p- r+ w8 B4 l, b
let local 07 R) ?" u* G' Z# f
while [k <[trade-record-one-len] of myself]
" o8 h3 p& j4 i0 W- P[
. n; z% W/ H* V# K9 y. Q: P' t) Iset 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)
, O/ C& ~; m0 H- k" R' v+ Xset k (k + 1)
- b- M2 H: Y. L3 @9 S]2 s7 E6 G' T9 @; ~$ p: c2 o
set [local-reputation] of myself (local)
$ \9 Y0 A% l1 |3 _end$ g/ p% P+ @3 }+ T6 ]; Q
5 R5 U" t% O/ L
to update-neighbor-total2 _+ _" b2 }& i+ [
; R6 y. j- K' O) w; @5 s1 c. A
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 H! _1 g2 \0 g8 }0 F8 W
( Z+ H) K" a% h
( f2 A$ {6 h$ J, b
end8 B. T- L& }* D* ^2 c8 i
. U1 K. t) U7 I9 i# ~( B: d. `0 z
to update-credibility-ijl
% Z" w$ z2 O% n! v5 M8 P  C2 G' [5 d" B6 A) o
;;
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% x% G& d" U# x; K  [" D9 {let l 04 \7 e& R+ a; L% V) Z$ |
while[ l < people ]0 S' }! S- A. J
;;
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
" [3 A  N9 v+ T$ C8 G[" i/ i4 v3 A. A4 `6 d9 R
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ a1 B$ R9 M3 w3 W1 B4 X3 k
if (trade-record-one-j-l-len > 3)
/ Q0 `. H+ D8 {1 `, I[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* w8 |+ N+ n: a
let i 31 b4 V& E) ^( M( @6 e1 f
let sum-time 0
4 s$ W  R8 c, e; z; n1 K- swhile[i < trade-record-one-len]
7 q4 S$ }3 h8 _1 \+ h' ][; U; E* z. `* ?$ Y, ?' {
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 @# j. m" L3 Z; ^; E1 j1 \  c
set i
2 F0 |7 G" N0 y" T. _! x( i + 1)
  }0 u" B$ {( H1 U% j
]
' i( `) \' p% H& _- Q4 Rlet credibility-i-j-l 0) F; Z7 U7 ^5 k5 [
;;i
评价(jjl的评价)
: q, }, I) ]6 R3 |let j 35 L7 v# I: n" |! e; E5 V6 S+ D% @
let k 4# g/ r- U( H# @
while[j < trade-record-one-len]
! q. S  C5 L2 F7 e, q3 l/ N2 s[
  _2 k  O( R6 swhile [((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4 t8 E# {. B1 g$ {3 I5 F
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)
6 ?$ d! n, y& U& H. qset j; U5 ?; t6 t1 c' x* {
( j + 1)

1 G* ?( Q, n( t]
  _- x4 @% n7 W6 zset [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 ))
" `/ E! |+ X9 t6 g- f# h  W) ~9 R; c, `4 ]7 ]6 H

! A; T4 D! c* `) dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 f4 c6 w& w/ T4 x
;;
及时更新il的评价质量的评价
. _; I5 X% N8 {: }% A' j! vset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: {/ V3 g& p. K2 Gset l (l + 1)( W% ]7 M, X) i
]  j. R) L7 F" A* \
end; H- k! p- J8 c" f2 H+ G7 c

+ ^; A$ d" a+ Y0 Oto update-credibility-list- f0 J. N0 |2 H# e
let i 0
* r. W: a& u& l3 `while[i < people]
! ~$ V; ~% w+ D) L[; g2 q1 {3 ^* B2 w
let j 08 z- U4 y" E/ d
let note 0. g0 o: Q+ m6 D, {
let k 0
1 P& P2 `+ A- E5 ?1 ^" M3 e;;
计作出过评价的邻居节点的数目6 [9 s( x# r0 f' ~+ T7 O6 r/ x: l
while[j < people]
4 B, o% r: |1 B# {# V# v[
# S1 m! E2 {' z, C0 Kif (item j( [credibility] of turtle (i + 1)) != -1)
; r/ C& S. v1 D;;
判断是否给本turtle的评价质量做出过评价的节点8 X) Z" K1 T1 ?
[set note (note + item j ([credibility]of turtle (i + 1)))* M6 y3 c1 V2 F2 I4 {! ]2 j
;;*(exp (-(people - 2)))/(people - 2))]

9 @) M( r+ ^4 q! e  w$ i9 mset k (k + 1)4 I8 g% J8 L# K" |% j# q" P- @
]
$ D* Q& O) h/ i+ wset j (j + 1). j1 h, w9 l) r! b. _$ }* W, j
]+ _7 Q" z$ z4 g& q9 D% X, `
set note (note *(exp (- (1 / k)))/ k)2 m1 ?) ~+ X4 q1 W; A: ~
set credibility-list (replace-item i credibility-list note)* e& b8 a) w0 j# y. o
set i (i + 1)
4 m7 @+ f# S+ a4 a9 `]
, W5 B5 w4 ]4 K2 \( _6 |3 R4 Q1 tend. e2 i/ r7 o, _$ R0 l3 }) m

) R4 ~: H% l8 T1 |6 ^6 s4 yto update-global-reputation-list  n" W) q& ?& R$ M$ I6 d' }% L
let j 0+ _9 C6 N, A9 G& G
while[j < people]
2 }! q; y6 S9 W3 C/ O7 _[
: E  a, I& ]. f, _) v: G9 blet new 0
  N8 [) l2 C0 t, U1 c;;
暂存新的一个全局声誉9 Q9 r) O5 q" {8 g& u9 R# t
let i 06 Q6 m% d% `  l) v
let sum-money 0: t2 c' n" G- P
let credibility-money 0
. t1 E1 @1 J/ X- n; {" g: L+ O! q# W6 ~while [i < people]
* o& l" ^- \* G% Q- V& Z# Z[
+ R* S; T. [9 f, Jset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); R8 D/ Z' U3 B
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' |% C. g& _8 ~; Cset i (i + 1)
  z1 E& ^, c% l" o* D9 a+ p1 v]
; _) |& ^( b" }let k 0
4 |- ]( U1 Q8 c3 G1 {9 M+ m: blet new1 0
* X% f$ d! p5 Twhile [k < people]
! c. k6 A5 Z% A# J& U8 ?[
) ?6 f4 i- ?! V' o0 h- q+ k- U' vset 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 Z( h0 ~" [+ {2 q6 v7 f
set k (k + 1)
# m' A' h* J! F$ Q]6 [! k0 ~$ X( L$ D0 o; l& }( O
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ b5 V- ^) y$ ~/ z0 V/ Iset global-reputation-list (replace-item j global-reputation-list new)
) g( A& c/ V( \6 ^: }set j (j + 1)) |( o4 f, B) H% H
]) M( n# d& W/ Y
end
6 V" y: y. B8 G
/ T4 f. G# l# r. B8 l. @
% t2 L0 T2 L- Q) E, D* @
2 T4 J$ O: D" |1 b/ }to get-color
' @' ^* _. Y- c. `; q4 S0 V, h2 X% Y" S! i6 }+ \  W% D0 ]
set color blue
" Q5 m3 B$ ~: ^* C1 r
end
8 \& g7 ?' d$ s: Q# I4 T
7 s, s1 m& Y% r# R' X' Rto poll-class
0 Y  g" M6 B0 m5 j6 \) S) _4 x. nend
2 ?1 X# ^4 `$ ?* G
- a0 k# V5 m! Z, L$ [to setup-plot1
9 B! {1 w1 {8 F9 m7 j5 j6 m8 Y% R1 N* P: p) p' _) ?
set-current-plot "Trends-of-Local-reputation"
/ {5 S- m  h( G/ U  j

9 J. C3 j% }. E# t7 oset-plot-x-range 0 xmax

8 N- `! d* I8 f: A$ ^" w# C
! i9 {! q% H  t8 U. Rset-plot-y-range 0.0 ymax
5 m2 P  [; h. k2 C4 g" H1 Y
end
" _  o$ r! _& a, z8 g
$ d2 D. [2 Y+ x& s, Jto setup-plot2
, X$ B3 p! U) U6 H+ X# u8 g, d
+ \9 U: d- x" k" x1 s4 v3 bset-current-plot "Trends-of-global-reputation"
+ _: b7 R; P4 b3 u  a
8 d. l2 _' u- j
set-plot-x-range 0 xmax
) c" R: `6 U# ?2 a. k

4 Q( C) y2 i  u$ s) N& xset-plot-y-range 0.0 ymax

: S! E+ ]. W" D' L+ vend
5 _$ s7 f* ]- ^7 `- i. x& `6 u4 u; M# F$ K7 n
to setup-plot3
5 o) Y6 o+ g( J! m3 b9 _) y( B6 U* k& j9 f& U4 i1 O
set-current-plot "Trends-of-credibility"

: i/ C" p# W% ^) @' p! a% d. B- e3 Z$ @" W2 i3 d
set-plot-x-range 0 xmax

2 I: [9 v- k2 a( M7 o: a& S3 Q( u5 W1 o! a
set-plot-y-range 0.0 ymax
8 D) l4 Z( X1 V2 k: v
end
! s+ Y/ l1 ^+ I8 y$ p* _  f* C* N7 w' `) y$ f* [. c- w8 q
to do-plots
" F0 X0 ^1 j& d& f2 t1 t! Wset-current-plot "Trends-of-Local-reputation"
% b% X6 v1 F; |& k  D& Nset-current-plot-pen "Honest service"
. P+ j$ G* {4 ?: n: ]2 Bend8 u/ {7 [" ^7 C) o2 @
% q- |0 ?6 Z5 i, A1 r% _5 `
[ 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.
! Y1 N. S' g2 M& I9 P: y. x9 i$ J( A/ R/ l- [+ d0 [$ j6 o
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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