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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:
4 Y/ w( L0 `& V6 pto do-business
: _! u6 ?& J& W. {& v# f# v rt random 360* d' L  ^- b$ z. P  A1 w
fd 13 a4 i, \$ C$ i/ a/ e2 U
ifelse(other turtles-here != nobody)[& a8 ^, ]8 t9 O2 w/ Y" d
   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.$ w  F" o0 p! u$ D4 a! G
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * g: W( u% [5 ]6 x: }* a
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, s5 d* |1 X7 {% i+ h# H3 J- ~
   set [trade-record-one-len] of self length [trade-record-one] of self0 u5 C* E; b0 I
   set trade-record-current( list (timer) (random money-upper-limit))! c( H% u5 m6 R- \) _* b* B3 T4 o

: b" A* I$ ]5 o- S. R7 [问题的提示如下:
( u" I  J. {, Z' Q* @8 r
, L$ @& s3 E0 C: x5 w' Z. s- }8 Ierror while turtle 50 running OF in procedure DO-BUSINESS" S  b, U7 ?6 C( d( W
  called by procedure GO
( s! V! J! F$ G9 [: SOF expected input to be a turtle agentset or turtle but got NOBODY instead.  A. j& K* ]- P4 p+ _" l
(halted running of go)
! |( |+ c/ E0 Y7 I/ \2 ]" v1 W+ U- A" o9 T
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~~1 r! _# z% G$ X2 o) V
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
8 Y, R# {* W- U* D; r, |# [globals[4 k" B! u7 J8 W5 E3 J
xmax
3 Q+ Z4 V) G0 r8 X- j$ L3 ~  Wymax
* ]( n& N* J1 @" b7 Vglobal-reputation-list
  s/ h- s- Q4 P4 N) O" {
! z3 W" e9 t% T& t;;
每一个turtle的全局声誉都存在此LIST
! A7 r' |, ?: v3 _% Acredibility-list
7 U9 z" j6 ^3 p0 C8 T;;
每一个turtle的评价可信度+ e; l$ n* |5 F6 P5 ~
honest-service
6 A* C% q' L% ]$ r: Funhonest-service
( F1 B  q0 w# C8 z- n+ w6 Ooscillation2 G5 `  j4 e. w8 j( y- ^1 X
rand-dynamic& N" V- {/ F* ?7 M# b9 f
]- p4 |" _$ t  t9 |' q) X1 C1 N/ u* a. d

3 E+ x: t- b, S0 I) Z& I2 q0 Lturtles-own[, f5 o3 F; L5 a+ y' n* e
trade-record-all
. p) I. T" |* W4 c;;a list of lists,
trade-record-one组成
  O& M. P, D) B( s& d" ktrade-record-one
/ B5 D; A8 T* R+ l1 C;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 S7 L* C" u% S, h. L
, \2 h* B1 k. C% M
;;[
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]]! i6 a  Z& O* y4 t% {  L4 A: Y
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]+ |7 r  ^1 J8 S) x- D: ~7 W
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) F  M1 U2 l" V) s
neighbor-total
, x+ z6 K. c" V) Z;;
记录该turtle的邻居节点的数目' i- L2 N3 N9 R, p/ h& A% G
trade-time
; u! Q9 v6 O& K$ l- _% l: m;;
当前发生交易的turtle的交易时间
1 D# ?. T: h8 d  rappraise-give: X$ K& b" |6 L4 M, k
;;
当前发生交易时给出的评价
2 }/ ^3 p+ Z$ S7 S$ s- _appraise-receive
4 C* ]1 T0 U8 p! C* {5 x6 a2 ^/ P3 k* s) k;;
当前发生交易时收到的评价
0 t1 ?% p: Q7 A( R) e) _- _& G& y" lappraise-time$ f. u0 x5 w. }9 s  ^' T( z$ C
;;
当前发生交易时的评价时间  i2 z$ `/ D: z3 c, Y2 P
local-reputation-now;;此次交易后相对于对方turtle的局部声誉, J! K" T2 V- P5 w( ?/ A
trade-times-total1 u) P! k, X5 K2 p$ T6 W
;;
与当前turtle的交易总次数7 f* H+ E/ P3 R9 x8 E2 P; U
trade-money-total5 @9 ^4 L4 p, B. {+ q( s
;;
与当前turtle的交易总金额
- n2 Y0 a+ ], Ilocal-reputation) h' J7 I, H9 y3 ]
global-reputation
  V: r, W. u& w# {! lcredibility, f+ K0 s$ A0 f% u
;;
评价可信度,每次交易后都需要更新6 e) }- x8 @* i* a! ?
credibility-all) w$ d4 g+ }9 }! d3 n
;;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- S8 r5 ^: G2 S/ T5 {8 k" B* y
, @8 t& J6 j1 l2 d1 T;;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0.57 \, v; T5 _# _2 U+ P) h7 j
credibility-one
: E( a4 G7 d1 l4 z* F* P- j9 N;;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people7 T; }2 n( N( N% F- @
global-proportion8 `9 T& o! X3 R
customer
# x& G2 y1 i0 i5 Acustomer-no
. @' N. [4 `/ I/ @$ C# s; M4 P  {trust-ok  u  W0 t4 J9 x! T' v2 I( |8 ?8 Y) Y+ v
trade-record-one-len;;trade-record-one的长度
, x4 t: C* G! ^, r# V' T]  f7 a+ n$ r0 j: G- l
2 S: H/ s1 a6 W# n
;;setup procedure+ Y* c% o7 u; Q3 m/ n" `: T

# H/ C/ S7 I8 Bto setup8 w0 Z$ G% J9 u9 b

% h9 {+ J! u8 Z* Zca

$ T- f# n4 S) b9 R6 @, S& Y( V  ?4 y2 G9 D5 X
initialize-settings

/ I9 A5 U" B5 ^# k
8 L) X6 m* t# w2 e: }1 Y% ~$ L' jcrt people [setup-turtles]

) r, M1 Z  M' ?2 h7 g) l, S
/ z1 W! H0 E- ereset-timer
9 p; f2 \. F# |* h9 A4 w; X

" Y0 V3 a/ V1 E: t" `' Bpoll-class

" ?9 W$ v& m, ~  b3 D; Z' X9 ]9 ?4 a9 c8 S" J; v5 F) S
setup-plots
8 Z0 l1 \  D/ ?) p& J

1 z( c2 Z7 \2 Y+ ?. b; I2 K* m) Tdo-plots

# V* L  v6 C2 Vend
6 E7 r+ z( p/ i' j
+ G/ Y, S' b7 n) p7 _& N4 i5 [( wto initialize-settings
, x- J3 `5 r/ X4 D6 u- |  O- g; R- P( B' \. a! |
set global-reputation-list []

' B- s* i4 y( H6 K: k+ ]
! r' B3 `- m3 S& s9 ^5 G* bset credibility-list n-values people [0.5]
  Q+ J& b4 m2 E% d6 h% d; b+ i
+ Y2 P& }! V3 `" m! h* \$ P
set honest-service 0

8 }) p, P8 P2 l1 y; X) u0 G/ j$ R8 ^4 k3 {
set unhonest-service 0

  f1 L* Q- I# {# ~! A, A  I5 O5 [* D. V
set oscillation 0

2 n+ X( b8 z$ L9 T, K# q* H2 m8 }0 s6 j, Z
set rand-dynamic 0

: ?; `# I3 A& O! xend
- f6 W. v, i+ b3 z0 Y
+ \8 X; S0 \5 R# xto setup-turtles
8 h* {5 Y- Z) g% }set shape "person"& ?* m. J& v- ]
setxy random-xcor random-ycor" J. c1 t, x" }5 [, M; ^4 y
set trade-record-one []
3 L! {( ]8 H1 {7 j* `- l
2 |6 b4 A& K/ R3 O/ _, h& f
set trade-record-all n-values people [(list (? + 1) 0 0)]
6 s4 [! G/ X3 ]0 L8 i

) {4 |( [* \' w! i6 T' Q3 v5 aset trade-record-current []
: p) c" I$ J8 y2 B' U/ b; \  Aset credibility-receive []) A7 G3 q  H" w2 y8 ^. L. M
set local-reputation 0.5" j" c3 s4 ~! p( e) Q9 O
set neighbor-total 0
$ v+ ^$ `+ @7 j( C4 e! Qset trade-times-total 0- w- p" ^7 c$ W
set trade-money-total 0! l6 E! s4 y5 [4 n; R3 z" s' ]
set customer nobody
+ E( i8 E# F' G+ k- k( k7 Aset credibility-all n-values people [creat-credibility]
# p6 l' `$ O) m! X- S: Z8 ^set credibility n-values people [-1]6 J, ~( c$ s% W& I- }
get-color/ g8 j5 ~* W7 Z$ P/ |
6 E9 m) U" B1 N
end. O, H: A: ?# j2 {; n

; F" B9 a( ?- vto-report creat-credibility
! _- o6 |' q1 B0 ^* T9 S, T* e: `0 ?report n-values people [0.5]
7 c, w- e; f3 x; Q! q: ?! vend
; N# T+ E2 Q/ w/ r9 y/ {! k; |  ^7 B/ s9 C) h& g# `2 |
to setup-plots8 |" j6 Y7 N) g9 z. I0 ^4 B# M! e
5 b& ~' S( C& b% Q" J
set xmax 30

. A, t, u% _) j$ B! n: {6 z& r& g) r/ [
set ymax 1.0
5 Z. i, T- u) f

1 x6 @9 N5 T! N! [0 k  Hclear-all-plots
3 M1 A7 N$ H/ P8 h: v, r
* p% u  t/ ^# f4 i' {; N
setup-plot1

  Z! Y3 l6 r$ P) a+ c# ?5 c2 i+ {" `3 N% W% l. _
setup-plot2
; w4 X; B* ^+ A  s) v  s- u
5 i( t5 ~) @' d* _. K: |
setup-plot3
) _! H$ r+ X  Q7 z; e% d9 y
end
$ P' K3 ~& g5 G" c
3 h8 j) E$ o* f$ a+ \+ d2 i2 \;;run time procedures) t6 ]2 Z8 Q0 \9 d

( s0 Q) r  i. ]) Z2 k, Z5 s# Gto go
7 l& j! D% F% `! p! ?9 V+ ~" j1 K  g3 e, v+ S: {$ _/ q2 F9 D' S8 r
ask turtles [do-business]

, R6 U# q, J$ P/ H* t5 O% B* yend
1 z/ V* s2 H+ n
8 T. u* W. m3 ^' n, n0 uto do-business   D* i0 ]+ @( k2 Z; E% k
" z/ E# u0 q' k/ C
" a6 E! \5 o; @" J1 s4 V- e
rt random 360
% O  n  Y2 i# E  r5 h* g

3 G0 z/ R, f2 V' F; \fd 1

" y9 g/ z* ]0 V6 h% o
6 R; L9 n/ [' D$ Q# [9 _ifelse(other turtles-here != nobody)[
& F: |5 c+ t  ^2 m/ d" I  W
& H- T4 y/ H# J0 r- S* U7 f5 A
set customer one-of other turtles-here
$ F1 R- S) F  E
5 r% T8 r1 M# q# X3 E: w% a
;; set [customer] of customer myself

5 j( V9 V; ?! I* ?% ?; v: f& M( F1 A. _$ C9 E3 y3 ]  ~4 ?
set [trade-record-one] of self item (([who] of customer) - 1)" c; A/ P0 L6 S. P# [2 x
[trade-record-all]of self
0 \/ }- t. B8 \  V' B) s2 }4 G;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 V! ]* v, y7 C/ a0 A& x; w9 C* j. _! c2 h6 i
set [trade-record-one] of customer item (([who] of self) - 1)5 R0 o* |) ?) o7 X
[trade-record-all]of customer

& r. w& [( W: w8 ^* p
7 o0 s8 n. o8 ~8 d! o" A7 f; g6 q' ?7 Kset [trade-record-one-len] of self length [trade-record-one] of self

8 j/ R/ u; L+ s; ?- W. K, ]" n& Q$ ?% f* S4 v0 w: S& X4 O
set trade-record-current( list (timer) (random money-upper-limit))
5 H& Z* w( A* V2 J3 f( T

0 [4 D1 o' i5 r6 Y% i+ E+ L9 Fask self [do-trust]. Q0 E/ ]* e3 z
;;
先求ij的信任度
+ m0 E5 f, Q- `* u; [' ?. p
4 p" `. G$ q; m, n2 Uif ([trust-ok] of self): i  h6 K. ^, }1 G. Z3 B8 Y+ ~
;;
根据ij的信任度来决定是否与j进行交易[
- ~0 p( v$ a9 wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, @: a: @! d+ F0 G- q: i) r: W/ `# }' L' ]/ u) q
[

2 `9 q, s/ w+ `( n+ i% g6 c, x6 R  U4 W9 `0 ?8 H$ ?5 X
do-trade

" m6 A# o% `& @7 N, z$ J0 C2 E8 A; ?) ?+ ]
update-credibility-ijl
# ~' h7 Y/ J2 f1 T! A: H
' {. ]# M1 T. D* w6 @9 O
update-credibility-list! a1 E7 M( M4 M- F
" H/ c6 w% G, t6 Q$ Y

# H# l3 k% V2 |+ E  Oupdate-global-reputation-list

! c5 j, F8 E% q# ]- H6 m. T+ |# v4 G0 O( A
poll-class
6 m! W* @* M8 X
6 ?: h' V. Y1 d
get-color
  O% r+ D% C1 ?% w; `

9 |8 O  D. ]3 Q]]
) o0 D, A7 k8 y0 R% k6 u7 D. V$ q) V5 n
;;
如果所得的信任度满足条件,则进行交易
  ?+ [% i0 g& T7 O
3 T  W) \/ K2 e: J, _7 m& L) l[
) q& \6 N+ [( {4 Q/ }

! N5 f: y: M$ V7 V- crt random 360
9 Z5 M( }4 E" z5 G
# ^0 a1 G( d/ s$ A( o  @
fd 1
7 ^) v# R) O  Y$ A
7 p$ o' }5 A9 t; B
]
0 |+ x9 n% L4 u8 ]: z3 q2 b
9 j: W5 `; \6 D9 o1 C6 D
end

6 u, x! ~- T0 C7 ?) G+ D/ z- k. K4 l1 z. l
to do-trust 0 `! Y5 R* Z( O
set trust-ok False
+ H& Z( ?: X( E$ g1 l3 W: @( T# Y
/ F# z5 u  i; E# d) c

9 W3 w1 n1 B& x* ^; K9 F5 ]- rlet max-trade-times 0
) F$ w) s- R- j  m% W. H) ]foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
# S. D* o, T; M3 ^( [, U6 f7 mlet max-trade-money 0; L, x0 Z# c" K' A8 P% w
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- N3 J) t! c  m/ n9 w: t" a0 L. rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 H3 @: n7 `( u1 {

$ N  o/ a9 C  G, y6 h0 l& H1 F: W

7 G  S! [. f( x4 v5 g, dget-global-proportion& \4 l1 d, ^  m8 R: a& V
let trust-value) q6 U. U7 ~! r
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)

) v& S; {( Y8 F" D* ?& V% V0 eif(trust-value > trade-trust-value)
9 R6 {4 B. O7 ~& h/ Y- r[set trust-ok true]5 ]0 L  J! x% e; {8 I
end7 ]" f; H  W) `* ~7 G, u
/ o( f8 y8 `! g7 z
to get-global-proportion9 i; \0 ]& g( b8 f
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 n7 U4 X; }8 C6 I1 x
[set global-proportion 0]: L, G6 ^/ Y3 p
[let i 05 ^7 {) M2 }/ @  a' ]& v9 N
let sum-money 0
+ N+ S2 K6 L. P. C* j, o8 H! |while[ i < people]
6 p8 k5 z' S: Y& [) y3 s8 k) _[
6 |& n" {: W0 O( a: k/ T2 N  T& mif( length (item i
* J6 G/ Y+ [$ r2 W: j- K% ?/ Y[trade-record-all] of customer) > 3 )
& R3 |2 f( t3 I1 x! P4 L: k1 y
[# `9 d: ]" N. b5 P2 I, M
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))# x* h' {& b7 z  u" O" a
]9 |  l: h; m( o* J+ Y& w
]$ U9 [8 Z3 s, S. q3 _  f! ?
let j 0
( I, t9 W+ _- E& e# Z; Xlet note 0; |/ T3 W$ D- d
while[ j < people]# G: N" n! D0 f9 r1 @! K
[
7 ~! l" \) i$ v* b9 `9 ^' J6 Kif( length (item i7 B1 L% Y9 a- y) ?# A, {2 `" s
[trade-record-all] of customer) > 3 )
' q- H0 _9 T" L- _2 s6 r+ q
[+ [' z% \) y! d; v# I/ J7 ?: `1 o
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* J1 L& I% j* f1 ?, ^# g( J. r
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& U- w" C' i* F6 n$ ~- p  a
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ X8 ^, P4 x7 m7 x
]
" h: _+ t" z$ a% L; n, R]- c( k# S7 Z* K% o
set global-proportion note0 K; s! M5 u) f( v9 `
]
% d6 I# A6 O. {5 uend
# z( {% I% q8 d2 y8 `9 F& i1 }3 _8 _3 M% t
to do-trade
- a% I- o' y; H;;
这个过程实际上是给双方作出评价的过程
) a' g: P: i1 Z( b  fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( `* ]- b  ~9 l+ l9 Q1 W
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价+ F1 b, K) i; d. k) q
set trade-record-current lput(timer) trade-record-current
6 `) N1 Z; g* d, h$ a$ X) x;;
评价时间
- Q9 p2 H4 }* lask myself [3 |$ q% n, a% I& D7 \' J
update-local-reputation
9 v) V% N7 [! `- {set trade-record-current lput([local-reputation] of myself) trade-record-current
. }* E; J/ v  a7 ?$ K9 S% p. h. F$ {]
6 @/ E" M5 Q  E6 @' a& q* C8 Iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself( y. ~$ g. v# X  l1 y" H
;;
将此次交易的记录加入到trade-record-one! O: O& b; t3 T! H( m. d3 f
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)3 O/ u6 Z8 l' Q: ~+ X
let note (item 2 trade-record-current )
! w* V" e9 e7 I- K! |set trade-record-current+ H) [' H9 ~5 U( e
(replace-item 2 trade-record-current (item 3 trade-record-current))

5 A' T1 b# h1 }0 pset trade-record-current
  M# F0 Q" [4 z* n6 N(replace-item 3 trade-record-current note)
! C" p2 b8 _& j' I" `( {
$ g5 t; @( j/ ?/ q3 ]! K4 A

# _0 Q4 u  U0 X+ r" F+ Z+ C0 `ask customer [7 h& c/ o7 w4 Y' C1 ~. J1 J$ c2 j
update-local-reputation& l) j8 i6 {7 F2 N- M( g0 t3 }
set trade-record-current: j" K' o$ o! a  ^# T3 t
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. r/ n- |0 i3 K; e. V
]- [* t& h3 D8 e5 O

- F  \) y4 [' e" I7 V' y; ]

( W- q+ E. R, sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ q7 E3 d7 S; @. I+ y+ S

5 ?( w$ S( v: `# ^% y# c5 A& fset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); W9 H  y1 ?; F% |# d, Y3 x* C
;;
将此次交易的记录加入到customertrade-record-all
* E3 V" i- f& S+ s4 {end" [5 K- J: r, d7 \/ |: ?9 N/ \
& _3 V/ z; m& E+ b
to update-local-reputation) Y' G) j6 m# C$ M! n. a
set [trade-record-one-len] of myself length [trade-record-one] of myself
& s) |6 X+ C1 i+ K( Q# U' X) C: ]/ }/ o/ M+ z5 \
* c$ R) }' k+ [: p  l3 @
;;if [trade-record-one-len] of myself > 3

. a( y" c% l$ pupdate-neighbor-total
9 L- \. D: w: }: b;;
更新邻居节点的数目,在此进行
3 I; t& Y8 o2 W2 i# ~$ Flet i 3
5 y' m) I( s! ?1 _0 u; E1 L  @let sum-time 0
  b2 K' W3 O/ h4 l6 ^* H% Cwhile[i < [trade-record-one-len] of myself]0 X0 j2 l9 S& l" R( i$ v& u  d( Z
[+ N5 h. Z2 p  [+ E
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( G7 o- c) X9 o4 r5 x1 v+ D& Hset i
; {$ i7 U; P" j! g( i + 1)

- m- @4 y2 ]( q* P- L5 O! |+ l# R$ n]
+ r- o: B& a* G4 [let j 31 X* O4 ^. I& o6 i
let sum-money 0
: e4 x9 z6 O2 f6 @+ ^3 I% qwhile[j < [trade-record-one-len] of myself]
0 ?/ v/ A% O( P$ A% r[3 V, K7 d( g9 Z. k8 _8 N/ R
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)9 d5 n& a! x6 u$ s! |% x: R) [
set j0 @  ]" }8 {7 P
( j + 1)

4 E8 b; U$ m+ N* L/ s]
( p# V5 E& O2 z" v: ~3 {let k 3
) _# u$ W2 ~5 a. U. ^7 Q/ _let power 06 f* b1 h  |' w8 W  ^& I( }; O
let local 0+ n7 K9 L+ j1 T
while [k <[trade-record-one-len] of myself]3 x' f' |2 t- M+ d0 t
[* C8 q0 I3 n/ h6 d
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)
+ A. d# F$ t1 J: v& B6 S* Lset k (k + 1)1 ^  w& V# r) S3 L/ t: C9 B4 c
]
5 S# ^9 h) o' g9 L1 D8 H- qset [local-reputation] of myself (local)9 e5 n6 Y# S3 J0 U
end
1 e/ J7 K* }, R0 ]  x. R0 U0 q* r) t) e1 ?: l* B. R
to update-neighbor-total
; }: w5 h8 k8 H- ^; ]4 C  P1 l$ P, t% B2 q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; B# x$ l0 S3 c! G4 P
% u: q( j- m( v2 T9 C# T, w) e) e
* h' B& J7 o$ [! c5 V: x9 u' d
end: R' |+ Z' l' j( |

) z: K9 i* e6 @to update-credibility-ijl 9 e" G! @8 M& J0 P
' ]# Z) s) T6 D. E3 l% h
;;
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。
  o! z* A0 v7 ^' X* V/ k; f2 i+ ]let l 0
# u/ }2 B( H6 s* Swhile[ l < people ]
8 W  x+ U8 l7 a8 m/ ]7 U8 F6 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- z$ s, i/ H% \# ]+ U
[
& W4 q: c* Q, O% \" }let trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ [8 A* J2 J$ w
if (trade-record-one-j-l-len > 3): L, q' I$ b) q& Q( p* Q3 `3 n7 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
, s/ W4 U; b$ V8 N* R7 Rlet i 3
; b& D7 i4 H8 F% Q+ \: Olet sum-time 0
% y1 F3 F$ `$ c; I4 v$ _: c, ]while[i < trade-record-one-len]
- W3 v3 i2 j7 P2 [& }[/ E6 t7 Z+ l& C9 x
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 g, N4 r# e, {
set i
5 z: e0 Q$ X  o9 V  j# m/ B( i + 1)
$ C8 g* |5 F+ U" T; |$ f
]
- K$ `, a! `$ ~( alet credibility-i-j-l 0" v/ K+ c8 A9 C
;;i
评价(jjl的评价)
+ ]0 |6 w& o% a& w) C( mlet j 35 r; A1 J' q3 x1 M& w( q( P
let k 4
& r( E2 b! t, n. S+ p4 B2 O7 f# Bwhile[j < trade-record-one-len]
$ Z6 x4 h  }+ S3 {% l3 R[8 e/ M3 ^7 `  [/ _# @* G
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
8 k9 ]2 Q" ^# [; v5 Lset 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); q% i; e& c+ t" b' {. ~$ @
set j
5 t/ n/ ]  [/ A$ ^# P1 K( j + 1)

$ `, C( E. T# a8 Q. N" ]2 @]
8 [$ ]  f. ]' b0 }2 t* ]) Q8 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 ))" ~, b8 H. B  P: C8 R; E$ T

8 i" W" J6 b# E  m! w) O4 v% i4 E

- f; }! ]: E( l( y  V& [  J% _$ P3 t- Flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): q6 R$ g  V& I( D8 T( |3 S3 L
;;
及时更新il的评价质量的评价
6 q2 @4 \1 Z$ P% M# Q( H3 g; wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' S* P/ ]4 C* `7 ~" b) pset l (l + 1)8 R6 x) y! d1 f! m5 F
]: @" ~4 q+ `1 s$ c
end* D$ g+ `$ y( k: ?

' v; D! w5 M* d8 V' W% f, r% q; xto update-credibility-list
2 U3 ?) e( ~: Q; tlet i 0) \7 x2 V5 c! k8 J4 Z0 S4 d6 q+ Y7 D
while[i < people]; o1 i% r$ B; v! B' t
[; u$ u6 }, x4 [" C+ M+ {
let j 0* n/ L! D2 j: y% O  z* H0 G
let note 0- N9 S* u9 |3 b; t  R  u
let k 03 ^7 }) _7 i: X2 `) @" ]; b3 P0 \
;;
计作出过评价的邻居节点的数目/ `  c9 \1 w5 t2 i& u6 {
while[j < people]. I+ U' s* P4 c6 B7 E& o; S0 d
[8 `4 g; C% N7 w* N0 |/ C2 H
if (item j( [credibility] of turtle (i + 1)) != -1)
+ l) z# v$ f; y, d9 ~;;
判断是否给本turtle的评价质量做出过评价的节点
" ?/ @& {' @9 |0 T. C; f6 Y& K[set note (note + item j ([credibility]of turtle (i + 1)))
) s: }! U5 S/ y; |! b;;*(exp (-(people - 2)))/(people - 2))]

4 ~4 D4 h9 p. i6 f- ?) @: m1 pset k (k + 1)# a- h1 R% h4 T
]
. @" q8 i  J6 r5 E0 R1 `* h6 Xset j (j + 1)
+ W* u2 B3 S/ N# y% V]/ r$ o' Z8 Z2 k7 s& B. O5 R
set note (note *(exp (- (1 / k)))/ k)
% ]  I3 n7 ]  ~6 _" yset credibility-list (replace-item i credibility-list note)
1 z9 F% O! G( G# dset i (i + 1)# Q" ?- e9 _0 K+ \3 ^' ^8 h
]
5 v0 y% O8 h- B4 a( a* a2 oend* \# x  [) @, v1 r/ ]' c3 `

% k+ q8 Q9 a  {5 N/ R& _to update-global-reputation-list2 s" L$ k/ o- \" S* O
let j 0
6 P$ X% c* W# |) ywhile[j < people]2 y! c6 l4 Q/ L3 f) u
[' J2 M, P; z4 w# S  Y6 G, R8 i
let new 0
2 u( w, w" M$ w% y) M& x;;
暂存新的一个全局声誉
, o% M' |0 r1 P# O" A1 dlet i 0/ L3 u$ L8 u7 n& S' \
let sum-money 0
. `! k. S. y- Slet credibility-money 07 g2 D$ H8 P: S1 O  R% }( l
while [i < people]! B* x( E7 z2 }' s2 {/ e! w+ ?
[7 K) G1 j' L* z( s$ H* ?
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
. n! J  w! M; |2 j4 v" tset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)), [7 s3 x/ Q! W" z+ }
set i (i + 1)# {" w# x. J+ _% @- i* U( {
]5 {2 r7 e6 f" }5 o$ ?; O$ `3 ~; q
let k 0
$ b5 B5 _. w3 `- \3 h2 Glet new1 0) T* u2 H& m; W% P6 W4 l
while [k < people]' ^8 ?+ w) I, d1 Z0 K
[
% Q' {, Z; X& Gset 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)/ _& C3 C" ?, T0 `) j4 u0 k
set k (k + 1)
$ L8 M& Q: U4 h3 @]
) p2 J; W: `9 I& T/ {set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & H" c1 ?+ M. v
set global-reputation-list (replace-item j global-reputation-list new)
% W. e; V1 x2 t2 n: Wset j (j + 1)
  @- m+ W4 ?; r1 m$ n! d) _8 Z]
1 k- K6 R2 x: v  @& send
, N3 ]2 t4 l2 S# K( A; r2 z" c1 K- _4 ~7 T+ }7 U8 ~

  I6 j% ?' r. b! c% d2 y+ Q* O& }
3 _+ k5 _2 A" F, s( w3 x+ vto get-color- |. m' l6 z. j2 {
( ]8 ~9 O  X0 E4 G5 j# ~" z
set color blue

% |5 @( y) U7 w. hend5 c+ y1 p- z4 J! S/ x% M* K2 ~( G9 Z
, u& g7 R4 h+ G9 m/ \
to poll-class
2 ?! I2 J1 n9 z) y* q& Dend
  P3 g3 y7 n' |7 v% i6 H% i# y
& o: i4 r8 X3 P. i! z- Uto setup-plot1+ ]5 j. Z. D. W5 D- \6 u
9 l% @' F$ ~% _! {/ Q0 v' Q, ^
set-current-plot "Trends-of-Local-reputation"
/ D* h2 |- i: ~5 a6 S2 a0 {

) ~$ Y$ T& [( X; A8 t# N( [' kset-plot-x-range 0 xmax
/ n3 B' ?5 Q; N- n% s# z* g" l) M

1 u  R) w! k- Y$ V& \- aset-plot-y-range 0.0 ymax
: v# b; X8 E4 `, ?7 m4 Y- R
end
; z& x& U% f2 B5 W% O8 ^2 E# c, q, L' ]0 I
to setup-plot2
  ?' I! ]* R# ]2 b3 T  e2 K
$ R' F5 @1 J. W$ M4 h& I. E$ bset-current-plot "Trends-of-global-reputation"

# s2 h7 `0 s9 c$ n8 H
, W0 L0 t! k2 R& i& J, Eset-plot-x-range 0 xmax

5 R) `' r, J, u5 Z
2 [7 q( Q: b) Q# x$ yset-plot-y-range 0.0 ymax
$ c  J- U# W5 e
end
9 ~" v7 ^" F9 R! ]6 q. L% P4 e$ Y8 w; q+ p5 F% t3 O
to setup-plot33 g0 e# |1 g7 i* |- U8 @
( w. x  f* A4 a! a/ v4 w
set-current-plot "Trends-of-credibility"

5 D7 L0 T7 K1 R4 E; m. b" G/ q0 s/ R/ l
set-plot-x-range 0 xmax
+ }1 v+ ^+ e' }) S% h+ Z! G
& h3 b6 }9 G2 u! n: ]6 j+ C
set-plot-y-range 0.0 ymax
. T( _" I0 M7 Z, [8 Y, q, I
end2 Y3 K, t( t' J( p! l* N
. c/ A, l) S, N, U! y& O" k$ s$ C
to do-plots0 n, N8 v& Z2 C' G
set-current-plot "Trends-of-Local-reputation"! n; H; a1 `# U/ w
set-current-plot-pen "Honest service"
- y3 Q6 z) X' q' c" @+ M5 |end
( {9 F8 v5 q" b: J0 ]8 b5 S3 S8 C/ W0 T
[ 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.
& M: b4 B. r1 O" H0 Z) I) U3 Y6 w, F. J5 ~
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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