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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:. B6 V" j7 v7 ^9 b+ D5 J. M3 `1 A
to do-business
" w5 V3 ?# W7 |2 Y rt random 360
1 @9 d) k$ ?) R, c/ B7 ?$ q fd 1  U4 ?5 S) H4 E+ Z2 l
ifelse(other turtles-here != nobody)[
) T% H/ d$ o( C- T6 W9 J  Z2 b2 T3 \& J   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$ O" n/ j6 n   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    / g6 n: h7 G8 s7 d
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, k  l6 z+ V! U2 p3 ^5 W! k   set [trade-record-one-len] of self length [trade-record-one] of self- ~6 `0 {) c! [; w+ s0 ?( w' P# J
   set trade-record-current( list (timer) (random money-upper-limit))  S4 Q0 @% G7 X! _" \* z' y

4 W$ b, ^6 Z9 P- \问题的提示如下:7 Y6 J$ Q! B& V; v

1 f9 X: `% {# ?% }$ X' g# perror while turtle 50 running OF in procedure DO-BUSINESS" N8 O  q. y% g& z$ Z' R8 }4 C+ f
  called by procedure GO2 D) i( u* u  w8 m. r/ |: c+ H
OF expected input to be a turtle agentset or turtle but got NOBODY instead.  S5 f6 v4 P7 s# q: n# Z( K9 U
(halted running of go), {" \: N% U# {$ p
. O% O% C9 e& e, p" j
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~~
9 l5 j# D5 ]5 `. T& S+ G& @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7 S) b. z5 i' e* @: f/ a2 \7 l$ k7 K
globals[- m. J( x  l7 e2 d! I% k0 ^
xmax
% Y2 ?" M+ y2 s" i% i! R/ u% qymax6 ^2 k' \$ j# A+ c9 \6 @: `
global-reputation-list
; l9 b1 ]1 n1 a( ~/ }
; \" r3 z/ D, F. v; z3 f;;
每一个turtle的全局声誉都存在此LIST
$ m0 u% ]# \$ [# |( }; Dcredibility-list) _- }( G  e! u) W* t5 B
;;
每一个turtle的评价可信度
& `0 s9 a6 O& `  I1 x3 N( Y( uhonest-service& f/ @; M5 J& S# m4 _. A/ i
unhonest-service8 x; V; s( @1 E. t) q: s: H
oscillation
+ r0 Y* t) O  o5 ]$ ^* C% S3 \rand-dynamic- e. L1 R$ D$ S$ j9 U
]
( @  X1 Z5 m8 W- S* U
; F+ N6 d. Y) ~4 n% q7 Q1 f8 Uturtles-own[
, l5 Y9 m% k) ^- Ztrade-record-all
7 ?- `, k0 {! k4 B0 n$ H;;a list of lists,
trade-record-one组成1 D. q/ [- d2 H- {! ?/ F: @
trade-record-one
- I) u$ j, [! e;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
' _9 k; _% L2 T  {  h. M
0 A/ }- E9 [# E# U* ]4 W% Q- P+ y;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
4 k% h0 P. a2 N7 H8 r' vtrade-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]
( l0 f( I. Q6 b/ \& d2 M* Ecredibility-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 ?( H& }: _1 ^9 @9 M
neighbor-total7 l. \$ J; T* P* h( |
;;
记录该turtle的邻居节点的数目% {7 l9 |9 v' I+ M
trade-time: i3 D9 N& y0 B7 M3 u$ S
;;
当前发生交易的turtle的交易时间: ~& F5 R* [# @% C
appraise-give7 B* ~3 Z5 Z5 C
;;
当前发生交易时给出的评价
2 j/ r' F/ a9 {* |appraise-receive# G7 u# x6 l# U  w) y5 Q/ s, a
;;
当前发生交易时收到的评价
! _3 T' v+ ~1 `8 `2 Q+ kappraise-time
: j: N! Y9 g* Y9 L- {9 E' A;;
当前发生交易时的评价时间1 W' G, D3 f# ]4 T  Z- v
local-reputation-now;;此次交易后相对于对方turtle的局部声誉' H  U3 K$ o6 a# ], |
trade-times-total
. r) N( H+ i( G- @1 k;;
与当前turtle的交易总次数
3 k3 n4 p  h6 i! xtrade-money-total
6 D1 _5 k3 r& O9 u0 ]/ ]  |& ?;;
与当前turtle的交易总金额
  k' r: j) W5 x" |1 ?, _" N  x) qlocal-reputation
. e5 T( U- y; L/ H6 I& ?  Mglobal-reputation
3 b% S  y* @9 O3 ^6 t, C: O9 R: scredibility
9 ], f: k* o5 {" X. R! P4 v! E- c;;
评价可信度,每次交易后都需要更新) `  V' C! Z5 l: R, T. C  A& i, ]8 i
credibility-all
& ]/ g7 j- ~8 X2 Z5 \  c, l- ^;;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) D: d# s: o6 ~& K* P# c/ \
8 @+ I+ e7 O' _* U( ^1 F8 r: \( {7 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0.5
8 x1 j  H' ?% O0 \+ x* pcredibility-one
- Y- ^) W. F8 z$ [7 I0 q3 k5 F;;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" h" D$ e/ Q8 U9 |2 S
global-proportion
" ]* f7 {2 E' Z, Dcustomer* R/ B1 ~1 Z0 ]3 b
customer-no
; `1 K8 f! C5 A; ]$ Htrust-ok
% p; A! s8 q$ O9 G2 y9 Rtrade-record-one-len;;trade-record-one的长度
8 Y; M: Z+ Y! o# M8 P- V; |]+ M0 K9 i8 ?  d( q$ r

; a* i5 {6 J$ c4 V: O& r0 f;;setup procedure
9 z2 Y$ T: a" w3 y0 I7 \/ g/ U' w" w+ H. K0 v
to setup
9 u0 A' l; L; P( q- X$ H4 \. [; p# A
ca

! e* p+ a- _' K  Q( r) N! p( ?9 z# [
1 S" P/ t+ k' z' hinitialize-settings

" ~4 c  W3 c' Z
! O. k  A' Y$ ]6 N/ }! Fcrt people [setup-turtles]
0 k6 l5 ?5 D" c$ K4 S

6 {4 c- |9 J7 H  ureset-timer
; o/ Q/ N' a( r* h/ Z# _: a

& y$ k, H. ~( J$ R5 Upoll-class
: h: s: D, v3 j8 L" S. U

3 \1 p7 R% I$ L1 Y* Vsetup-plots

5 o/ p. ]9 w( n
9 {1 s" G  n; W: X9 wdo-plots
! Y& `7 \* t/ ~- z6 U1 |
end" ]" }; ?3 d' t5 a

# C: r1 i4 o! y  v- f6 G4 A  Tto initialize-settings
& @, z5 @3 G5 `  S1 M& [3 @3 ^' g
3 i+ `+ u) h( k1 M: L8 ~set global-reputation-list []
. v: {" `# Z2 s

9 R9 g7 ?3 L0 _$ b( Dset credibility-list n-values people [0.5]

9 _  |1 r+ j' M5 Q5 f4 k% k: S/ b; O
set honest-service 0
' |( K( a$ R$ y1 {# m6 m! N

0 E' b% s5 n! V6 C' E5 Yset unhonest-service 0
4 O4 G$ I% y5 R/ f5 M

1 Z2 b- T  }; R1 D0 P& gset oscillation 0
: y& V1 H7 }, B- X" i" l$ `6 m
. |1 @+ c! G$ y
set rand-dynamic 0
% I/ j( m* t1 V9 T; H! Y
end, A  L! q7 Z( }; \
; Y. u" A! W5 ~  h
to setup-turtles # X! E9 R! o7 L1 T& n& P
set shape "person"
  W$ F, I, O. Y% F$ y! p0 |setxy random-xcor random-ycor- }% W) |  F& J. p: j
set trade-record-one []* h9 W& C% h9 c% s
" B) X4 o" `1 x' K. I6 W
set trade-record-all n-values people [(list (? + 1) 0 0)] & ?9 B8 J" j" E( R
( _. W8 `3 r0 z
set trade-record-current []+ X7 z1 [. V; B: Q/ ~! a
set credibility-receive []/ e- n- e( I& S: g/ I+ [4 y
set local-reputation 0.50 t0 z6 F% H3 k; x+ v0 ^% G! j0 D/ B
set neighbor-total 0
1 c7 q7 `! ]" K, Q+ Nset trade-times-total 0
3 F2 a# {# d2 O& g7 hset trade-money-total 0% c+ g- ]! T$ M1 T/ Z
set customer nobody/ d& O7 i2 T0 w) ~* S( g$ t+ ~
set credibility-all n-values people [creat-credibility]0 Q. E! y$ N8 T
set credibility n-values people [-1]5 y3 R. d6 `$ c$ ~/ h4 ^% `: Z
get-color
3 Z* S2 K1 @- D5 R+ H2 \& J% j+ D

9 H- Y5 q1 r) s* m! |end
, s6 C. @' v+ m# U+ t; T- y# |- K( q3 Z/ ^
to-report creat-credibility7 ^0 \  \" y1 x% s, k" I" Z
report n-values people [0.5]
! ~8 o. e1 v* I. m7 \* \end, Q' X4 E/ L0 C7 j

$ L7 g( J9 r6 ~/ ^" R. B0 Z  ito setup-plots
5 T* M. f+ L8 P9 E) t0 d/ K& m9 ]8 B1 v7 d- c
set xmax 30

9 C8 [9 O' b7 h5 D% A1 P, o3 x0 {; {+ ?
$ D% g2 ^1 e, Bset ymax 1.0

- y0 B4 D; H; ~1 Z4 S' R6 j
5 m5 f/ Q. b# E9 @+ Gclear-all-plots
% ^! l( g$ q" n* U' K  ~7 G8 `

5 M9 C8 e, @/ H' n! ?( s, P) D1 s4 f/ q1 msetup-plot1

; r# Y5 C' f- l4 ?1 V- f7 I- A* B, L( ~
setup-plot2

3 }$ V' y5 E  G; v7 r+ H
/ G: L( W0 J3 d: N% Z0 Y/ h) {setup-plot3
' s1 o" i1 n% x/ \, n7 X
end- X( b. X, Y! ~% S" a3 p
# J9 s  y4 L7 q1 {( y
;;run time procedures
' n1 a) r; K  L. P$ j4 @* W0 |% q- y. F, ]
to go
8 m. k5 B0 B! \9 s4 v7 g
2 @* s0 Y" A" Q) b  x1 o; Y& T! Kask turtles [do-business]
" q9 ]( D/ x! @0 U9 \
end# a* B! z% v$ _  u# S* K# d

2 e, @# p8 Z6 r9 ?' nto do-business
6 L2 N/ ]$ g; ~6 g7 |7 |
" y* [2 p  ], o' f5 M. u' m0 S
( ^$ R% d" x9 h  C+ A" e5 }% m
rt random 360
0 F5 g- j! \! ~* [+ L6 k( ^% h8 s# d

! f4 x4 a9 v/ ?fd 1

1 C; X: `. @* R  v% J; a& t% i# H- S/ u
ifelse(other turtles-here != nobody)[
7 }6 i3 X6 H* a5 _
4 ~$ l7 V  `' t9 g5 z+ C8 P# Q8 R/ ?. a
set customer one-of other turtles-here
- Z( Q% B- `( e6 j* M9 C; }" w

4 l$ G9 |$ h- M( X: B8 w8 E* g;; set [customer] of customer myself
2 q4 g; W* v" x- \* Y
* l9 i1 S) N: z! A! [
set [trade-record-one] of self item (([who] of customer) - 1)& u) l5 j) J" I( V
[trade-record-all]of self2 C: M( R7 l* r  |* J  ^
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" Q9 Q3 D; E( U, x* ?' q

' {/ \+ u6 S0 W! q6 s$ Qset [trade-record-one] of customer item (([who] of self) - 1), H& @$ V; L0 r" z4 G8 y
[trade-record-all]of customer

6 ~, |7 M( r' l8 @7 r8 @* H  K5 D% P; K1 J7 Y0 |
set [trade-record-one-len] of self length [trade-record-one] of self
# P# W% d; G1 s

) y4 i9 J% v2 ?" Iset trade-record-current( list (timer) (random money-upper-limit))
) A( |5 Q# p4 k- `. H

" W& m7 r  P4 `ask self [do-trust]
0 B; r+ }# }4 D8 ^4 h* U; D# G* V;;
先求ij的信任度0 M, i. Y" C' d: `
( D3 p8 d4 u3 k( V6 q
if ([trust-ok] of self)
3 M1 c  c, H+ z;;
根据ij的信任度来决定是否与j进行交易[6 w, `9 f4 T( c& b  E* _
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 ]7 q2 a* g% q, G" j

$ M  w6 i( B6 @7 s/ F3 X% P0 M[
8 e; }; K+ ~+ B2 y5 D' v9 ]# t7 C

! B3 u, u" w6 w. ~do-trade

: x% ^9 a  Q& d: i4 j" N
0 o2 i  W  t' @* g* Rupdate-credibility-ijl
+ g% ~. v0 B# d' k* t

7 j6 z2 @0 j' t- E- k) h2 d2 s4 x! q: hupdate-credibility-list5 P% R- l# ?2 y% _" k

: f: l# {- q5 I5 P8 S- d8 @- e& _2 b( X; M7 ]8 G
update-global-reputation-list
- o& g/ O" A6 {3 }2 ~0 H
: z' H, {' S. G; l; x2 f: x& j
poll-class
4 \% D# l1 K3 [
8 R8 u# M2 `/ S& ~0 D! M9 i
get-color

6 @+ Z0 R9 h  Z# V- h: ?$ {
, j5 r9 c! h( a2 ^% D$ x3 o]]
5 g8 ]9 |6 S" w8 c; f7 g/ V& a' J" u0 A; E$ W2 G1 C8 T
;;
如果所得的信任度满足条件,则进行交易
# {( K/ r+ R1 H* H& Q# }8 S& {
# U9 R5 E# O; c[
# q% {8 H7 `# U% H

3 M/ k) h  @6 N. N+ _$ xrt random 360

* ^4 X! `+ n5 ?8 m+ M* _' X: {6 \7 {, X* d8 O0 x6 `5 m+ J* [) m
fd 1
- k8 ]: `$ a& Y5 q  c" W
" e: [9 Y% I+ q
]

! S* N' j& C7 w- ^+ ]) ?: H4 w' _9 H; e. ^+ q3 Q
end

- f# Y. l, H% u/ x
# x; [' i, `' ^6 e) s+ C* bto do-trust
0 H1 G+ M/ n- q1 @- F3 o8 v( A9 mset trust-ok False- s- I# r% R& B4 Q
$ i" Y1 W- \1 _9 j3 \3 C

- E. _1 \, ], w4 `- y- b5 c- W; Xlet max-trade-times 0$ ]9 p+ i9 }6 {  t6 g
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) g4 s  l  n. Z$ n4 W; G7 N  Q
let max-trade-money 0
6 @- M9 N, Q/ x6 |0 R' pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* \; Z2 u2 F  H. v9 i
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: Y/ K7 A0 J/ k& C* }
3 l3 C8 T8 D! W: R

4 o5 p. m) T! [8 rget-global-proportion% ]) w& \8 M9 q7 |
let trust-value% y( p" Q5 {8 l- W7 J
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)
& _. e0 e5 d, P' l" r2 o5 \* f
if(trust-value > trade-trust-value)1 Q0 B, {! v! L
[set trust-ok true]  u; U- s. Y* ^$ T% V! ]% v
end
2 i4 r1 ^0 l- `  X+ r( J$ t. b& q2 ?9 q1 \: o; V& p0 c9 M% x) J
to get-global-proportion
6 E! g& h( a4 L6 z1 X2 yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 `8 f$ y' j" H. y
[set global-proportion 0]3 z5 ^' ~, s: t; z; ~
[let i 0
, W4 m! Z: m& j) ]6 `$ d& _: [+ Flet sum-money 0* C( m2 a$ ^3 G5 G# n
while[ i < people]5 A+ G' h$ I6 q0 n0 \7 P1 n: P
[
1 p: d+ ^/ Y; E/ d3 U5 b$ Bif( length (item i
) ?/ Q, X* J) F& c, ~/ |[trade-record-all] of customer) > 3 )
. B7 q' v/ U6 x( W2 H( |8 `, H
[
6 L, {8 k- ~2 J, i3 N* M7 Zset sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 }1 d% R& J; s" r9 J  ~
]0 h" z/ g# w* w  ?  P: R9 }6 }
]
( I1 B/ }. g1 U, ]let j 0$ f5 r6 m4 B5 I, B; j1 L4 u( h
let note 0
" D, U2 S5 N1 k+ S; q* zwhile[ j < people]
! J2 I5 w0 R' p! X[2 E& R! u. ]% P1 e
if( length (item i/ f1 M: l! H4 Z
[trade-record-all] of customer) > 3 )
) p. _  }% [' X! p# B$ ^
[/ M+ s0 ^$ [1 }9 Z
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ i# _, [- F, j/ X3 w* k
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]' u5 U/ h  l( D' [
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
3 J- |: u: H' q7 o3 K# A9 P]: C4 S" N( r6 u
]
: A% c% z" w# X( Z2 }set global-proportion note/ ~$ D3 @  C) b' {  f
]4 _2 y. S; D3 e* @# Z
end
8 b! \& r( c9 P6 G$ H4 e4 E! W2 |8 }' q# f# X5 a7 {7 z
to do-trade1 U' B- H, N( D- U' s2 D
;;
这个过程实际上是给双方作出评价的过程
/ k: |& h4 q+ f3 bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价4 C8 X4 ^  ?0 [1 w8 h$ m0 L( f9 J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ X+ C$ l1 v9 i9 n) V! Pset trade-record-current lput(timer) trade-record-current! N9 \# {2 t+ z. z9 @
;;
评价时间6 A, T0 Z" i3 Q6 d! \% g
ask myself [" k, v2 f5 D) x& X. F- ]+ @4 d8 G
update-local-reputation
' V* [0 N) ~( l' w  u- E2 Aset trade-record-current lput([local-reputation] of myself) trade-record-current
8 z7 ?; ]% p  M- h% J% P]
! g8 n8 |6 q8 R! ?  |! iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ y8 O2 n5 Q9 A0 n;;
将此次交易的记录加入到trade-record-one
1 S  D2 g2 a3 o$ n' Cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
- Y& e$ Q4 R8 B3 {' u/ ~let note (item 2 trade-record-current ): y; ^1 w" z; \$ e% X, j; u
set trade-record-current: C2 q' |) H9 d, f9 D. n1 c- L
(replace-item 2 trade-record-current (item 3 trade-record-current))

8 m1 E; B+ @6 ]/ [! Kset trade-record-current) T9 d' B5 z9 G& r! V+ T
(replace-item 3 trade-record-current note)- |+ v6 K! k( x( `( @( ?

7 J7 w* `- }0 j

- o. s" e/ ~& fask customer [
. @8 u: K( Q" qupdate-local-reputation) R9 z  u+ ^4 G" Q! }# H
set trade-record-current
& F) Q' j6 K6 [8 C1 v) ](replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, n$ F% }: R3 g]3 B4 P! y5 j/ d. H$ M, U, X

+ b( z$ p& r, Y9 W' H2 G! j
* S9 O: ]9 \7 V9 Z) x0 J
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* j  I' J' \- f& L; M5 X* P
& u* W7 ^1 o$ p
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* A7 u/ I3 U8 I' e;;
将此次交易的记录加入到customertrade-record-all
1 I* f1 f: J( Y/ H! l3 @$ Q! T3 O& iend9 Z# x* M! s/ O/ ?! j6 z7 w$ C

( G6 C9 Q' q3 g# i9 u. Gto update-local-reputation
1 c4 h) e4 I) zset [trade-record-one-len] of myself length [trade-record-one] of myself
7 ^: Z! M$ |' l
: {" ~0 P+ R  c7 w
0 b/ _' i% X5 k+ i;;if [trade-record-one-len] of myself > 3
7 [8 r% u$ X( ?7 {/ K  Z+ q" p
update-neighbor-total
3 z: N6 r' {2 H( v6 U8 V;;
更新邻居节点的数目,在此进行0 B7 D; t# c3 n$ s+ ]# V
let i 31 ]9 m# M7 [3 s( p
let sum-time 0& y- {1 D8 t9 X- F
while[i < [trade-record-one-len] of myself]3 e) q) M! ~2 l
[
3 u0 t  T, k4 r* _( hset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )6 B" ~7 t9 R+ P  }
set i
3 N0 `& y/ t- U' B8 g' T( i + 1)

& G9 w4 Z. Y* j0 Z; U]/ Y4 R  u' S4 s8 o
let j 3
+ ~; W- u4 i" _" j. ^0 L$ G( Hlet sum-money 0
/ h* g* u. o% y* v/ R2 }while[j < [trade-record-one-len] of myself]( v' ~" \' y0 X. G* _1 t
[& f: B" Q( I- o4 ~
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)& D' ?  ?% P4 C4 @7 r* L
set j. v9 M7 ]1 I9 z- E
( j + 1)

4 q0 ^5 i+ F, O, r]7 Q( O2 x$ ?9 A( j! t
let k 3
" n+ a' M% P* C  T2 F* rlet power 0
4 ~% o) \- Q4 F* ^  G7 N0 alet local 0
, H' m9 D; W( B8 c$ u" awhile [k <[trade-record-one-len] of myself]+ v" w& N& h+ D/ d- ~: H% O
[2 V2 \# `! H2 `- l
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)
1 J! A6 L2 ]) ]' _$ Gset k (k + 1)
, |5 V! |2 `2 Y2 H( ?) u+ z8 ^* \]
8 b( W) Q* U0 J+ y1 C3 rset [local-reputation] of myself (local)
+ n9 ]8 e$ ^6 T, Xend$ {) a8 g0 r8 g6 @+ t% h& {

) @3 C7 @. Y) a* u0 T6 Z: Cto update-neighbor-total9 d" L5 K4 c; [
3 a. I' R% Z( r
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]+ S) H3 k8 x$ s" b  i  O

* H$ [! F# N' ]" T8 P' L) }

# ~6 D3 z+ k8 n2 q4 nend
5 I5 p+ c; T" d' @3 `9 u
, O! m8 X- W- g1 ]( J) `6 C3 j+ N) `to update-credibility-ijl . u* O0 m1 a, r( H
! ~5 n, J  J' A# [- ^5 J
;;
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。
3 e, i1 H9 N$ t0 _6 V! d3 P& ylet l 0+ k' c( W1 R3 X& M
while[ l < people ]
+ c3 x/ d, Q/ E8 m5 N( z;;
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1 P* t* C0 O, }4 ]! `/ I
[: W( b8 \1 m' o2 v8 d0 m; f1 K1 S
let trade-record-one-j-l-len length item l ([trade-record-all] of customer), g4 ~1 o9 n$ ?0 T9 i( I2 m0 G
if (trade-record-one-j-l-len > 3)4 x% F: a/ }8 `. e
[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-one4 D- g% i  d$ _0 ?9 n
let i 30 ?3 n- q) j5 B6 V+ a7 y
let sum-time 0
' w# V% y8 ^) M! U: qwhile[i < trade-record-one-len]
/ N* C, g/ u0 `' m. V# W# p[% s$ Y2 F0 M" Y$ `# E
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; J1 a0 u: t/ Y1 p* c2 m5 `+ gset i+ A3 U0 b: }, j% C! u$ Y$ O3 k$ ], J
( i + 1)
* T* t$ m1 P7 s+ ?4 n. i
]3 _5 ^$ Z, o+ N* S
let credibility-i-j-l 0
( d7 z' p7 g' R0 R, T;;i
评价(jjl的评价)3 F2 Q* t/ b1 z" y+ K. H! p1 Z, o
let j 3
, G- t+ S  s- }5 Q  q! @, S) ulet k 4! z3 a% A) u. o; ^  H/ w* }
while[j < trade-record-one-len]
& q2 s# M1 P& I4 o" I4 s[$ u% i% g# X+ z3 e8 ~. h. w* o
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
1 C  n# S5 \! y/ r! ^) Yset 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)
$ @2 R0 v5 n6 l, T5 \: `set j
! `* ]- d( j% g( j + 1)

4 ]2 v+ y* _1 P]
8 o& D+ l0 c* }+ u- \: |1 Vset [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 ))
6 K# U, u" K( p+ c' @# H# J
2 S9 l' ~" @9 G4 ~

* A* K$ \1 ~* ]4 |' E' Z- nlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% r! a: z5 _* a% a7 w5 w;;
及时更新il的评价质量的评价( M! ], t% C5 f5 u+ z
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]5 t. b, K2 S3 H
set l (l + 1)
2 ]( J) b  `' U5 ?]3 n& O; d- j. a! c& p' \& A
end
7 w( |0 @% ]  L1 y1 ~5 A
" m- ~  F4 \% [, ], s# M2 i! ato update-credibility-list
1 ]/ ?% Y8 O; d" O2 Klet i 0
0 S( e$ P/ Z1 B. ?- jwhile[i < people]4 P2 D. d; I) z! a; h% l' e: @
[' b9 c8 Y" u$ v
let j 0
# x: `$ ~' `- M: ]& P$ Hlet note 03 \' D. k! L7 D' ]1 Y& ^) |
let k 0
( ]- r4 X8 `3 p;;
计作出过评价的邻居节点的数目
" X, V/ m# U0 f* }2 U$ |2 uwhile[j < people]; p+ I, n' \( P1 V
[
8 _* R# D+ R6 X6 t+ fif (item j( [credibility] of turtle (i + 1)) != -1)7 A4 S2 S; S8 {3 a3 i8 B( u  j
;;
判断是否给本turtle的评价质量做出过评价的节点) D2 |% `' {- v! `- r  y
[set note (note + item j ([credibility]of turtle (i + 1)))
+ S5 B( b" d7 b% m7 c( w;;*(exp (-(people - 2)))/(people - 2))]

# \/ u" c# K) R" o) W2 O5 X' nset k (k + 1), R0 P  ]4 r6 P: w0 L' S
]1 P, @0 E+ b* ^" E! q) t9 _# {
set j (j + 1). l+ x' o! n+ d
]$ K) ]/ W5 Q3 ^" ~8 J( M4 T6 _* c
set note (note *(exp (- (1 / k)))/ k)/ M% K2 n8 b# D
set credibility-list (replace-item i credibility-list note)
' Y8 X+ w$ @  q  T9 n$ r# bset i (i + 1)" S5 I) i  c' \# l5 n" p
]- k9 e7 \1 R5 a! O3 F
end
9 \. h- y0 K( R' s
0 `+ d9 p7 c0 V5 d9 I# sto update-global-reputation-list* Y, X) e6 J/ @0 V" x+ @) l; P
let j 0' u; P; C+ e0 j% q) u
while[j < people]
9 x* P5 V& ]# H; K4 q. C& B, C9 N[
7 z2 s" D; g) R, I5 wlet new 09 ?( n* u0 n4 l- O
;;
暂存新的一个全局声誉
# q, y+ G1 m) K. v# Z3 \let i 0
( [* j# t9 j/ Flet sum-money 0  W2 T/ [$ j0 l$ h* s7 a/ @
let credibility-money 0
+ o0 U6 X) `; \while [i < people]
* c; t6 P+ A, \" n1 h( }[
( M/ K2 R# S  U" D8 h$ }, I" P# K+ Rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 n* i7 }& X9 N$ `, y  G3 Xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# F* b" T& l+ z: [; @+ f
set i (i + 1)4 l( J. G  U8 }' r( d3 a% S
]
; B" R" ?/ z, D$ K* Plet k 0
# {# ~9 ]" W1 w) b% W5 _let new1 0
0 Z- E. d+ E! u, @1 _, S( X+ W0 mwhile [k < people]2 `. K- f) w4 E5 O) [* @
[
/ Y# I. s9 u5 f5 B7 g) Jset 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)- j$ W/ W# }7 x: t3 R# }  N
set k (k + 1)
. I: W2 R' T# x" j# [: l/ X, N]$ l$ c; w6 E- T! s# W
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 ]& ^: j: E& H7 ~  b! A" X3 Jset global-reputation-list (replace-item j global-reputation-list new)0 ~8 ~4 j+ S) t. ~% O  }7 d
set j (j + 1)
4 b0 A& r2 ~, N- Q4 W1 r0 C- f]1 d4 w  ^% y; I+ |7 m% V
end( @1 h: t# c. Z2 y9 g6 t* u5 ?

1 x7 c, c5 ~! i: {6 f- k( j/ l/ z6 a* U/ E: L; R

) C- q, F% W, @to get-color3 v/ ?" E+ V8 y& ~. z# \
* {6 S# z* Z8 w9 A
set color blue

( J, B6 H0 _1 |/ o7 Wend
. s4 F! k5 D" @
) O$ @0 y+ [' G) w/ v2 n/ Mto poll-class- m) E9 U& G) \/ q0 F
end; _5 d$ T! S: k9 x  b

5 Z8 O, E# e$ mto setup-plot1/ r& M& b/ l0 S7 Y6 f1 Q7 E
! M, X7 R9 T# P+ Y' c% r
set-current-plot "Trends-of-Local-reputation"

: L* b% N5 X. J) k6 T" I
) u" L$ c8 T: B2 T% }- dset-plot-x-range 0 xmax
2 z) t+ m; w- ]1 C4 j0 ]/ X
8 @. p, I5 g8 |% ^/ u
set-plot-y-range 0.0 ymax

4 a  {+ d' H1 W2 D  y) xend" [9 S; f) s1 L& i; `7 f4 d

6 Z3 W$ C3 V- ?to setup-plot2  h0 U: ~4 O3 C4 _4 @; Y/ B
* X2 k- R8 R5 i% z- o
set-current-plot "Trends-of-global-reputation"
9 l2 L, U" i9 o4 ^+ z) [

" Z4 y$ i( B! k7 p! ~2 \: yset-plot-x-range 0 xmax
3 O) b6 H# k" k1 D, `. l0 Z" j  |
( g+ ~/ x* ~8 r9 M
set-plot-y-range 0.0 ymax
+ l4 _% N  n, _+ b6 p
end& i8 R: H# D8 s! X# h" L- u
! n% C; y  {3 y9 m, P
to setup-plot3  \5 n2 T& L* X1 X- i1 g
* W& ]5 }' @9 J, H) K0 M
set-current-plot "Trends-of-credibility"
% Y/ _* \4 K" [" G

) p1 X8 h" p1 m% \& ^set-plot-x-range 0 xmax
/ _- s4 u: k. [9 v" C4 _" r
2 O+ q0 p* q' ?+ ^( B0 A$ o/ L. u
set-plot-y-range 0.0 ymax

6 f7 ~8 `7 ?0 N& jend
  y4 l, s# ~* P5 X1 [! H5 r! d7 B& u! O% t; {, R- f  l% b; {
to do-plots8 i; ]" F! W7 S1 t
set-current-plot "Trends-of-Local-reputation"
$ r8 v5 [7 g7 I2 B' N5 I- O* aset-current-plot-pen "Honest service"
0 J; ?1 D1 p& a+ {end! r2 w; V& T8 }# {9 O# _  X% u
6 G; }, D* L; `5 v4 U# D. y
[ 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.5 w$ L: `) z) m3 j- |% W3 J

! t/ c6 U3 i( V, K$ s( V& 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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