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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:' X$ t0 o/ b1 m8 J
to do-business 2 ?' _- _1 y, m
rt random 360# p6 ]+ R# D! e% o% v& o
fd 1. K+ r2 k$ R5 `: G8 y* z2 y0 {4 q
ifelse(other turtles-here != nobody)[: H  C4 E/ P. @5 s" B
   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.5 L1 N1 K9 r, X6 I2 H* s* Z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 r2 W7 n6 d. U! V   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% o( l8 C5 t7 C% A( K
   set [trade-record-one-len] of self length [trade-record-one] of self
# S8 U7 L4 ~1 q4 f  [5 _   set trade-record-current( list (timer) (random money-upper-limit))
# r2 u) d; b# ?7 ^; K; i5 K5 Y& U' J. n3 \/ ^5 M) B6 B
问题的提示如下:, K( m! D( c" R# z4 t& u9 ?8 O: H1 T3 Y
& @- N, @* a: F# P+ ?
error while turtle 50 running OF in procedure DO-BUSINESS! l9 L+ A5 \. @/ E0 J1 N/ x
  called by procedure GO2 e2 z" }- m! [5 c6 O
OF expected input to be a turtle agentset or turtle but got NOBODY instead.* X8 h$ o; T3 N
(halted running of go)# ?9 _( l' X/ I5 f+ i. g9 L% ^

) W+ l7 r* f( e: X  [& B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~~
% {4 p! f; \: j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
0 X6 s. b$ q6 p( u3 U- ?/ `* Bglobals[
. o! O6 ^: ]; F& `' Axmax
" G' H' z# T4 n0 h# Fymax) e6 O0 k# a( [; ^" C( ?9 I. A
global-reputation-list
" m; o  D; [/ Q6 O4 P
; G$ o2 w3 }1 l2 m2 ~/ @& B;;
每一个turtle的全局声誉都存在此LIST
6 U( V- r4 S( z, ^. A$ U% z  qcredibility-list
0 t# C  h$ |6 v( E8 x;;
每一个turtle的评价可信度
8 t# K( B, p& ^  z4 X+ x9 B/ `0 Xhonest-service
* ~5 f5 U$ N5 p" J6 F+ Junhonest-service9 V1 F! G) j, a6 O5 `1 ~$ q
oscillation3 f9 f% A4 a, P
rand-dynamic& }3 f, r0 W5 M0 m! m* w
]
* J8 l, s# I* E% Q& w' m( F+ U5 M2 J3 X
. o1 I/ S1 B/ fturtles-own[
& t% a8 [" q7 s" V9 {1 btrade-record-all. ]/ Z1 [* C$ O# R) h5 `( a
;;a list of lists,
trade-record-one组成' q+ b3 d% N% T4 P& k7 k' S
trade-record-one
" ~! @( a* {/ ^! y8 x4 x2 r;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. ~# O/ D0 k8 {; M$ o

( h& h5 B1 T  |+ `, G2 L' y1 F;;[
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]]
+ F! R" ^) H/ Q; V+ |- Strade-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]" |- F1 I- v: P' k1 M' V
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+ W, x6 J* V5 P4 F
neighbor-total% d$ ]$ Q3 d; z4 F7 i, B% \
;;
记录该turtle的邻居节点的数目
) X3 q: P# o4 X1 M& b, ~8 M2 M" \. ktrade-time
2 b- ~9 t' F7 S( |$ D1 u; ];;
当前发生交易的turtle的交易时间
' I( l* e0 {# k* G5 }appraise-give$ G9 E5 G5 U$ F0 U/ V) @
;;
当前发生交易时给出的评价5 }8 x2 D$ |0 b# }
appraise-receive4 ?1 f! H$ w: K0 J% H* k
;;
当前发生交易时收到的评价& q' j6 S" f0 Q/ y9 ?2 v' ?* t& C
appraise-time& o7 D5 F2 _" G! c( p8 L6 z3 ^
;;
当前发生交易时的评价时间
5 Y3 g' ~9 Y* F! w4 C4 J2 Flocal-reputation-now;;此次交易后相对于对方turtle的局部声誉- [% @0 B6 C% y2 T' X7 @: p
trade-times-total' |) _: B  T1 k' M
;;
与当前turtle的交易总次数
4 `- Y% |/ V1 h$ [trade-money-total# v( I* @; @7 U" O: F$ x) m
;;
与当前turtle的交易总金额
2 C0 t0 m0 {4 H* ]( [local-reputation8 a" {% N- L0 L& g) ?' ]( q
global-reputation6 x* U  X% U  T. U5 J3 ~: p& C8 U" i
credibility1 ~" K3 e$ c9 N2 \
;;
评价可信度,每次交易后都需要更新
+ `* \/ b4 L; Y) h! fcredibility-all
2 S3 q9 k. ]/ C6 Q2 `' F( [1 R) U;;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% r9 x! X/ s4 y! l

. P/ v3 t% h/ r3 u6 y0 v6 U;;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
1 R0 e# w5 ^" i* Ccredibility-one* ?, a5 H# s, f3 j
;;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
( y  E1 X+ |. z+ \8 ~global-proportion& I/ ?# u( X3 d0 e
customer+ o7 t3 f7 b& q) Y* p
customer-no, e# k! V4 r- t0 q& R2 R
trust-ok
, j, K1 h$ k) I: Q/ e- Ntrade-record-one-len;;trade-record-one的长度
) s& H9 v- ?2 X4 v]7 g/ n5 t5 L1 V; r- y  C7 B: W' t( Z
7 e( Z& ]7 C, N
;;setup procedure
! ~; w/ x% C. g2 W7 h8 _1 J1 {: ~3 `; y6 J* {, [
to setup
* K% }" q+ R6 ~' k0 B9 s1 Z1 M$ v! L) h2 i+ `6 T0 ^8 S, x/ _
ca

( e! A, \7 j$ [& }) I5 q: q4 T2 z1 O  i) h2 `
initialize-settings
: p/ a5 f' k+ e1 }. {
5 x$ O* a+ O& O  h; Y  j8 I
crt people [setup-turtles]

: Z# Y: {) \* w9 _* Z+ l
$ }6 a2 B9 M. Rreset-timer
' D/ i: ]& l$ H, |

0 A0 |, p( w1 }7 G! A/ o) I9 _poll-class

0 g, ]1 t% J; [1 X+ E- ~
9 e. e% h1 A- i" l# ]+ z5 ksetup-plots

0 X8 B9 v( V% B, v& N6 V5 u/ z( f8 x' C
2 n% a8 O" W# t+ Q* _do-plots

! H' w2 K" W6 _% T+ ~( Z, T+ ?end3 C. m) O3 C4 A1 E' {
$ t( ]- E: k4 ?$ [, Q
to initialize-settings7 Y7 p, P5 I$ x7 T
% T9 {0 S! R% v
set global-reputation-list []

5 H% m' t* Q9 a- ?' e
2 T. A4 T) ^2 s' [0 N8 A" Vset credibility-list n-values people [0.5]
. K6 _" h) ^1 a. d, Z/ v" j; E% S7 C

9 ?5 ~$ \1 a# O. U* K$ T' @/ u8 Mset honest-service 0

& S# a6 N; ^1 i" I  J' H, G8 }% m( Q2 L: f! r4 l( Y
set unhonest-service 0

' j' p8 A5 d* B6 n, ]
9 i2 m, @3 [5 b' uset oscillation 0

! K' v/ v* N( M( A! w1 }: S6 p' l* x9 [
set rand-dynamic 0
' \4 B9 ?6 S1 k5 m1 D7 T
end) R8 v/ f% f' ^0 Z' b1 ]
: }* |1 J0 h8 h- |
to setup-turtles
" A$ @$ A; [) H" C8 u5 M6 \3 Aset shape "person"% \) `8 v+ G5 D$ v' i" {  i
setxy random-xcor random-ycor
" N: Z3 c* Z4 _1 \( z( X& z+ qset trade-record-one []
6 Y/ K! |+ A. ~3 W" [: F- m  Z
0 P$ ~) u1 @5 M$ S: m5 Z; p8 V
set trade-record-all n-values people [(list (? + 1) 0 0)] : k: C* [/ V: E0 ~
: Y8 ?7 K' }# k: S3 d) H
set trade-record-current []$ c! h5 ?; d' ]+ _. e$ g
set credibility-receive []
- w# A9 v# M& i! hset local-reputation 0.57 |, u( l+ c4 F3 S+ [
set neighbor-total 0
  @% F* q. ]0 B6 Cset trade-times-total 07 j6 n8 L: O7 H4 G
set trade-money-total 0
6 f8 K4 s1 v2 ^# cset customer nobody
5 ^3 l6 E( ^* K( |1 U* ]. L$ fset credibility-all n-values people [creat-credibility]
( g( V& d8 J" \5 {' K( Q& F& lset credibility n-values people [-1]/ O. _; N. C" Z& J. _; l5 N5 X% b
get-color
% B0 Z2 h: z8 G( d" g

3 h7 d' I( K4 h# C0 Wend
1 U1 r4 D6 Z1 d9 j$ W
! w. A2 J3 J# Y. L; I* Mto-report creat-credibility
/ C' k+ Y1 }! [5 Yreport n-values people [0.5]
- Q3 T- ]$ d$ l% o+ x; Vend$ y! m: t9 }+ E! R; K, d9 j
2 O& c& H# v) H* i1 K1 k9 H
to setup-plots" A; b$ B2 P/ ?$ f, H
4 p- Z4 k$ F$ Y! G7 T; w' B
set xmax 30

3 g, D5 ?! d$ p$ |' ]
3 U9 u8 S6 X3 Pset ymax 1.0

9 C0 _$ i  a# f) w: t! C1 [2 V0 b0 s7 _* m
clear-all-plots

3 ~) h& c& p3 N5 `& j7 J2 H; U, u
setup-plot1

# b: I# e0 t* p1 C
. B% p& W  h% K9 J; Rsetup-plot2

- y, r* K, {' m- j8 O6 L3 l9 h$ V! ]/ V+ z# f5 R; @
setup-plot3

. A; F8 T1 W( g% Wend
% o' v# i5 b! x! W( c! q! z) ^
5 S4 T& u, y. H0 @* b6 V;;run time procedures
! z  z5 T. E5 y1 |# x! |2 A
( U. z6 C& y9 i3 h' kto go  y" {( \4 U" G
- ]9 V  F9 K. t# y$ I/ K  v
ask turtles [do-business]
3 n( _, F  f7 V" o# T" k
end" _! E+ w/ t5 A" }7 [1 A
% R9 C! a2 @# \9 _7 J/ Z
to do-business : Z5 g/ u' A# ^" E" e) Y3 o$ Y

8 v! h- a1 d0 ]2 O7 Z
; n  o5 [2 u3 b6 G! Hrt random 360

1 p8 |5 A  H8 }, b$ Q* u& x0 w* k
7 z! a4 L: a+ i  R  C+ ]0 W& G, }fd 1
& g! P( O+ O9 M$ W8 B

. C' n: b% L) k* A# Zifelse(other turtles-here != nobody)[

& e8 D" O( Q! N7 w0 |9 d7 l
6 b$ c- ~  ]0 A- b/ Q0 T# @9 qset customer one-of other turtles-here

- M* n5 x$ ~' c/ ]- Z& t" b  f6 g
1 c. d& N, K. G, Y;; set [customer] of customer myself
8 K) B9 U  s8 T0 @. z$ k8 I3 ]& G

+ ~+ h. }8 x1 Rset [trade-record-one] of self item (([who] of customer) - 1)
4 X2 T8 Y7 |% p6 l[trade-record-all]of self
/ \3 N1 f1 m+ c, S6 G) w$ b;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

; M/ X7 B- ^5 l4 q5 s# _% r
  `# H* c+ F) i+ Cset [trade-record-one] of customer item (([who] of self) - 1)' r! J3 w$ ?/ `! c  m
[trade-record-all]of customer
/ x( T0 r0 ?1 J# B

* d8 p) |. _7 D( V) L* L% z8 uset [trade-record-one-len] of self length [trade-record-one] of self

) v: J  a3 f( R+ D- U# b5 l& C
, g- Z' t9 H9 z$ U/ S: a: z$ H9 n7 yset trade-record-current( list (timer) (random money-upper-limit))
9 T' N8 I- F! h4 a9 W# a0 t5 j  ?1 |
$ J$ P7 m! _0 }& S% I: {, D- @
ask self [do-trust]% d0 N  O# k* I7 V5 m- S
;;
先求ij的信任度
+ P( k1 h: o' s8 Q8 U$ E5 {
4 ^, S5 B5 U- P) d4 |! wif ([trust-ok] of self)
+ s* O& ?1 R( ?1 ~7 w3 J# j;;
根据ij的信任度来决定是否与j进行交易[, |8 l$ ]8 ?/ Z: Y8 o5 z
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. I! ^4 Z0 y0 H, O- N- {5 z

: l( [! W0 I9 X! {5 {! c3 {5 j2 W# `9 h[
: Y0 W! h" r+ L- w( i/ R- R! m

) Y! c0 [9 L* N- x& U: jdo-trade

; b  K7 d1 e) g- O, J  E* i0 y# l1 Y+ ^8 E( ~# G8 n0 y" E% _! ]
update-credibility-ijl
* H$ C1 p8 u5 ^' w# w+ j4 H: l
0 Q2 {# Q  F6 v! L( ?
update-credibility-list  V) G; P- [: y6 e! M4 l
% a: g! t  Q! J* N1 t

8 [$ R* a3 n1 B2 v. I' ^: e& m6 zupdate-global-reputation-list
, L" ~. V/ g8 d1 C/ H  K2 T

. I' `2 W2 @: O. D3 L; Dpoll-class

2 E. w9 ]! J) P1 c) T: h! X! _: ~; U6 U- a. k
get-color

' g2 c2 m7 j! J* w% Z$ j& F# w) b6 x. I9 o' H1 N  }' m
]]2 E; X. e& w/ B: \+ g

" O  ~- J6 b! R; b. {/ ~;;
如果所得的信任度满足条件,则进行交易7 I) s4 L& S& O; T& l% l8 z

0 X& n, O/ o- A$ L[

8 v9 t* G4 C$ _6 @5 x7 V/ ?- {/ y- x( R" m; T8 ?# _* `
rt random 360

9 z( ~4 d9 Y* o) c* w) Q. H' B/ }* L6 Q
fd 1
3 q7 s) C; Y# Z, f. V' A% q

& Q2 z8 Q0 j% G, j]

# t8 R4 q4 O; ^5 |6 \$ B8 g  w1 d( J8 ]% @' Q' \
end
% p; ~  O3 O; W0 A4 J% x+ F, L" n+ a
. ^5 }3 }1 a  T8 h, |/ F
to do-trust 7 N8 i8 M6 Q. S7 }" A3 v
set trust-ok False9 g4 b3 l7 z. Q7 I" }

, z' k3 s+ u( [, ?. t

9 G. ^4 `7 ]/ g, Rlet max-trade-times 08 h  E# o) D  o
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]; P2 O) J% Y0 U, R
let max-trade-money 0$ E8 H- M- H* [" b
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], _+ V- d- l1 B# J) k: W
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
% x7 l; v, B3 y" m* I5 I! z: D3 g  u# V& W+ [- e, ^

  t2 f6 t. K. Z$ Q( F: y, Lget-global-proportion2 U( p7 O- {! C% I/ n
let trust-value6 ^* }6 Z- j: y3 h# K
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)
- Q& N/ ?3 c7 ~  k; D8 l
if(trust-value > trade-trust-value)0 r3 W; X/ X( C- u* R
[set trust-ok true]! M7 k2 `7 o  o. ?
end
5 u( }$ Q$ U9 x: q8 H1 R1 z1 P% X
to get-global-proportion; p+ R9 p: k  |) P8 D6 @$ v! D
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 k& f2 g2 R; y0 T, ~  l[set global-proportion 0]
1 M1 _6 Q- Q) Z0 ~# X[let i 0  i6 I* A5 H% w: C( g
let sum-money 00 b, }1 r3 S) K" p5 k3 {
while[ i < people]4 [9 p- X7 ?; E- w( z* r
[
7 V. Z/ G, \3 a- d( v# ~9 r& Rif( length (item i
& r6 ]- ^  y; S0 v; x: J! m2 b[trade-record-all] of customer) > 3 )
9 Y! [2 z- p- I: p! b
[5 t2 B+ Y0 M6 _, i
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))# L1 }6 l2 `7 r6 u$ A8 n
]8 C  y: G' O, |5 q
]
5 ?" Y6 J, ~; y- v- `let j 07 i' l2 y* ~  \& ^% o
let note 0
; @% c6 ~' c& Z' iwhile[ j < people]
5 n% Y/ p. l! J9 W  o0 k  W[; d9 S8 [8 [+ O! f5 f4 E
if( length (item i
/ n6 [( _, x8 Z# q  P; L5 i" R[trade-record-all] of customer) > 3 )
1 g) M# K/ c! g
[4 U$ x4 [7 \% ^& s) n4 ~  e3 Y7 F
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 ?) w: Z! g% ~7 n: j% k, ][set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 Y2 `% }8 [6 h2 A5 o[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 {: B8 S) I2 O
]
1 E! c$ \9 i$ V]& ?( T4 F5 O  [6 ?, B- v
set global-proportion note
. \7 E. a3 ]6 m1 j]/ ]6 `' s8 l% A* Z
end
! O4 [; z/ N9 l, O* a% q" K$ ~: W9 J- Y& c
to do-trade
& Y+ q, t3 r* K. |  Q$ _;;
这个过程实际上是给双方作出评价的过程
  T, L# r2 K  W1 Rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 G7 ?3 t. Q5 Y4 i* n8 Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% Q* s# U( M5 j( ~
set trade-record-current lput(timer) trade-record-current
! ^8 V- s, {7 i# T- K4 I) H1 ?4 @;;
评价时间
, k  R2 U8 r# pask myself [
, u' B' q* f3 y" _- D; lupdate-local-reputation1 J) C1 }, n7 {' `
set trade-record-current lput([local-reputation] of myself) trade-record-current
& m/ }3 D2 e5 [& `7 r+ g6 o. p4 S]
2 X6 A. ?' w/ e' ~  Sset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself! u) s$ g/ `' M. c& U  M2 z
;;
将此次交易的记录加入到trade-record-one
$ ?; I5 q0 a9 q9 Wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" N: ?5 {& \0 X1 N3 R
let note (item 2 trade-record-current )
6 C1 f6 u5 l+ hset trade-record-current
6 t$ n) R# u( O/ ~& D, `(replace-item 2 trade-record-current (item 3 trade-record-current))
  Q4 a) |/ s( w- S
set trade-record-current
2 q! T: T5 W# X( _& d8 j5 b(replace-item 3 trade-record-current note)
% o2 A: `* B; q$ u$ q8 w7 T5 p2 A, G% Q) b! s7 s2 [
$ N/ }. q8 |( Y7 ?
ask customer [* {- \$ R9 o4 p( ^. {
update-local-reputation" ]* Y) T# ]4 {2 r9 m
set trade-record-current6 O% ^7 V9 ~! C$ y: O( y* g
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 m4 g: {4 K9 S7 s& h8 r: k]) T5 {+ F7 b% {" c1 D, N5 _
" n) B) M6 ?0 X* s; T
. ^- o% p% a  a, p- Z: A5 z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% A5 g0 y/ s- G# S; Q  q$ M
% w* d/ F) l/ \8 r9 ^3 ^
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))1 ?" i: h+ B9 Z6 g6 Y5 j8 R- P5 m
;;
将此次交易的记录加入到customertrade-record-all
' J# b* J3 Q7 J" f( Nend
9 x* c* n  V7 Y7 j7 L, `
  f7 `: r  h% u- ?' p$ H4 fto update-local-reputation
5 W% ]4 g# K/ p" a3 z, L$ iset [trade-record-one-len] of myself length [trade-record-one] of myself. S* l8 k4 c0 _# a2 L" L" \5 w
  S  }% ^% f) T4 x* t3 K
; P% F" E! H( v8 a' k: A: L
;;if [trade-record-one-len] of myself > 3
# e& @  s. }- ?
update-neighbor-total0 o( K% t! U+ P5 J+ E( |
;;
更新邻居节点的数目,在此进行1 Z# j9 s5 |- K6 H: C# O
let i 3
# x% R& q" M) S5 C) A5 Wlet sum-time 0
6 }  [4 n% ^- e/ ywhile[i < [trade-record-one-len] of myself]: Q5 z4 \. ?+ ?; s" x+ S6 K& v
[
/ K; e4 j. [6 j! @# g  y) B) }! Wset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )4 Q( `  ~6 Y8 G- o8 V7 W
set i
4 o9 E; I, N$ B2 `0 _( i + 1)
2 n' C* u/ M0 g
]
6 \' z5 W! m  h, h! plet j 3
/ @1 H/ l( x# @1 H1 R; blet sum-money 01 s8 \- M6 ]' W  u1 s/ x- f+ z- A- U
while[j < [trade-record-one-len] of myself]
4 i4 C7 w  W5 e0 j% R+ |% U1 Q[
: }/ |1 n. K: Wset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)5 L8 U3 \- E$ r/ @
set j
" L7 v# L# `0 }9 @% V- b( j + 1)

/ Y' o, i% r. }8 l2 E! L]
- {1 n1 Q  y) g; J1 [let k 3, t/ Q3 k' V( j" D7 T3 a$ b; Y
let power 0$ \) e1 c4 M. p' Z8 {! |: w; r
let local 09 I1 Y) O5 B& x6 S: E
while [k <[trade-record-one-len] of myself]
# O8 L. w5 A* }( }% P! x[
% U: ~" q  b! ~, o9 Dset 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) $ Q* {2 T7 [3 g; ~# \6 A, D3 ^4 x
set k (k + 1)
- R6 Z4 n6 z, L4 R" U* x]# X: o% \5 R9 |7 h8 x8 F0 ^" l
set [local-reputation] of myself (local)4 E4 t" m3 Z1 b' f: i$ ]
end6 y4 r: i7 q9 J+ h) R8 D$ M

6 _$ v8 d3 \1 s4 o3 p/ _+ Rto update-neighbor-total
9 W2 v, i! s+ I: M$ ^% v. J7 Z+ O
) f& w- \/ y- i' l! h) z# _if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 V3 p9 T% w+ V9 n& n
/ a7 r( i, t2 C

: U! I( A: o- s# K( m* Dend
9 b1 G* e* G5 |3 K
1 U) u& }3 n" l/ yto update-credibility-ijl
$ y9 i( L8 S3 b' N6 v: \6 R: Q
: L" ^; T( [9 z% @1 f4 \;;
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。4 F9 K! \. M( T; C+ m" p
let l 0' p2 ]& b7 y1 j+ n) U5 o
while[ l < people ]# p7 U! I/ X4 o
;;
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
% \& R8 \7 z/ ^[
9 I: h6 r5 y* B3 U, _let trade-record-one-j-l-len length item l ([trade-record-all] of customer)# R' |# `5 ^. O9 J3 ~* Z
if (trade-record-one-j-l-len > 3)
- ?2 S; @6 k( L& f: `* L! T[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 j' @2 F' _0 V, A5 d  C
let i 3
. n- C$ c% }5 E/ m- wlet sum-time 0
8 |& O  l2 D4 E4 [while[i < trade-record-one-len]
9 g7 `" p  V' ^+ ^[
( W/ k( l5 J) ^; v1 e! Q/ Yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) S% o+ m1 d. O; d2 [  h
set i0 @1 W% R( e$ c+ \2 U- v1 d$ g8 ]
( i + 1)

! R' I$ K7 A( z% {7 K' s# q]
. N9 g  z& L* e; s* U: T5 Alet credibility-i-j-l 0* }% Y5 v3 A5 C
;;i
评价(jjl的评价)
' B& j$ |: K8 t! z% Xlet j 3& J. `) B' z, I, }. W! ?  S
let k 47 j* Q' k8 h4 U6 V
while[j < trade-record-one-len]
$ X8 ~4 h0 x4 f! q[
$ h, Z" ?* D3 vwhile [((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/ Y/ e3 X/ K0 q/ S9 ?* u) B
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)
) C6 }2 N: M  l, Vset j
/ E% J# q7 ?' a5 e( j + 1)
8 a' H% O5 {1 J( i3 \& W4 S
]3 ?3 V; I- D- p  c; t' M
set [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 ))* h4 m! A2 t" E6 N
* J, r; u2 Y, I( u3 G% _5 Y2 f1 ?
4 m, L) h3 g: o! c5 q+ a
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( h! b" o  E- @+ W;;
及时更新il的评价质量的评价
% ^% h" I' p  l& l# v3 Kset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ U* g4 G: H6 x8 S3 R, b  ~5 M
set l (l + 1)
. J* s3 j0 z  t# ]) o]  p7 o5 v$ c0 }
end7 l: s2 e9 Z" Y( s( K, ?. u9 y/ h
6 c6 ^. v( L. q8 j, K. o- J; W
to update-credibility-list
; X7 D2 j4 k2 ~9 _) ?* t$ ]( W, Ilet i 0
3 ]9 M+ V  w- q& i( Ywhile[i < people]' R. R: o' U( U
[
2 z" v+ g! ^# `% ]let j 0+ M1 e) u* ]" K: P- \- S3 [
let note 07 {1 E, m9 D4 U1 Q" [+ B
let k 0  l* _# ], V+ X4 u9 Q
;;
计作出过评价的邻居节点的数目+ k$ v5 I; I" [* l* \; o
while[j < people]
2 K! u+ p# T" s4 b7 E6 x7 G: \6 B[( x8 n2 q8 @" N7 e
if (item j( [credibility] of turtle (i + 1)) != -1): j( ]2 c* v4 N4 r4 Z7 o" F
;;
判断是否给本turtle的评价质量做出过评价的节点
9 K$ o2 y; K2 g( O% B# n[set note (note + item j ([credibility]of turtle (i + 1)))9 l4 i8 R7 |, p$ q% u
;;*(exp (-(people - 2)))/(people - 2))]

" j0 s5 a3 u8 |* Q7 _4 E" ~' Hset k (k + 1)
3 r: G* |2 x3 x' _2 W/ z5 L]# ^  l& h; b  B4 G4 I0 Y0 ?" N
set j (j + 1)4 W% Y$ x" x; P6 ?$ J. @2 x% l
], I7 O2 k, ~8 E( z! `! t4 g: P% J
set note (note *(exp (- (1 / k)))/ k)
# M& P% D* f2 X- S: B& Qset credibility-list (replace-item i credibility-list note)
) T/ f8 D9 J. r* X8 u" O. {set i (i + 1)! ]% `9 d  M8 |9 z4 b8 C2 Q; q
]
7 o3 U, t: Y; j3 Kend
9 q+ ^8 V9 q: @7 U0 C
+ V$ p/ o2 l' p& ?7 d0 c* qto update-global-reputation-list
% o3 O- T: T. D0 P/ clet j 0
: t$ K& p3 g0 o) c, r) X' kwhile[j < people]7 C+ M& U4 [4 @7 X- j0 T9 ?! @4 y& m
[: U0 l& s& a* X: b; g8 U% Q
let new 0
. t0 J2 \* ?' z9 W8 Z# e;;
暂存新的一个全局声誉
; _- j; G# l; d; l0 K5 I2 zlet i 0
6 m& y" O- R& T! u) [let sum-money 06 m6 g: H' `& s  ^% a, o( o
let credibility-money 0
  O: l7 c( j" }. V2 k' ~4 Q5 jwhile [i < people]9 g" j; f/ X, A2 k& Y0 c, p
[4 Y" [% |, }0 i2 B
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 q3 @. Y% o2 s) E8 G0 {set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  F- r: O2 `8 f! o# Y' Iset i (i + 1)5 K2 C! P6 T; |: @
]
/ N+ e: z, a$ n/ {let k 0/ F% Q) k9 ?/ ^0 T/ J
let new1 04 b7 s% S; q+ D+ L
while [k < people]
' c( J- d. Q/ H% X[
0 z2 M% ~0 @& J0 h# Qset 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)
3 Q+ N# n  G1 f1 dset k (k + 1)
; L0 i6 I; t) B' H: ~" _& R2 x]
4 x- {5 }4 p* q: _  k1 Dset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
2 _; [. d0 Y: F! B' g% F: \$ {! ?set global-reputation-list (replace-item j global-reputation-list new)2 c7 ^4 n5 Q0 f, B. q' j3 b: Y0 H
set j (j + 1). U) Y) }6 x, z/ \" j% c
]" p3 N0 }& z. M5 B  s( e# D
end
" Y# `3 f* a+ I- M6 ?+ _1 Y1 g2 n; Z1 J$ T( C0 A+ X& O. k
( R  w5 c' c; T

* [$ W' L$ F0 R  Y% rto get-color
! l, k2 T* c# i  ~& Y$ v( j/ e0 @4 o0 F7 R: e9 P4 @! R& a
set color blue

  d+ ~% U3 k3 Q1 Dend
$ m: b# @6 \/ ^7 B$ b% u* X" N" i, F
to poll-class/ ^! Q0 u* r  a& d
end
1 |' ]( k; Q1 [* \* f* v) ]
$ ^% W/ u/ l& h1 W+ Z# Bto setup-plot1
* q1 n) h! a3 r  u' O7 |- P  V) e: k* i
set-current-plot "Trends-of-Local-reputation"

$ Z1 F9 P2 {- d3 K9 G6 l- E6 w1 ]' }& e
set-plot-x-range 0 xmax
% S# y+ }4 G/ {: v. O( k1 P

! G9 {9 u4 v! v+ y2 ^* X7 N4 E! |set-plot-y-range 0.0 ymax

7 A, }( X" P! Kend
& r" T6 Q: O# v6 y& X8 G0 }5 ]) C& g  G' f
to setup-plot2
  O. J; r# f/ y7 z0 O, M9 w/ c1 N3 K
7 g6 ?3 C; P6 L- x+ pset-current-plot "Trends-of-global-reputation"
# I0 }9 v7 S% p  G1 @$ W0 m

/ T5 B5 S8 p, k0 \8 u% O6 {* |' B0 p) @set-plot-x-range 0 xmax
% v: ?0 N$ ^( ^* F

- Z4 J8 r9 |, }( i2 P* G- U( Xset-plot-y-range 0.0 ymax

/ F: h% a$ Q1 j' Iend
# a) p5 _! k' t. F5 t9 v/ \7 R9 j) H4 h8 l
to setup-plot3: y5 l$ m9 f/ k" T& Z8 q" x* a

" m; ^9 `( h5 V: s# C; Lset-current-plot "Trends-of-credibility"

5 p5 X& Y' K( n5 z& t- a) \. }! W' [& j- B! W9 G
set-plot-x-range 0 xmax

6 }$ p- ]% y4 V
& u" A8 F- Z1 x3 j0 G8 l; Wset-plot-y-range 0.0 ymax
. P! u) G7 t$ [8 \
end; A7 c0 B2 |' E- X* y3 c- P
: R/ g8 x, v2 G
to do-plots0 O6 w+ y; W' P* @3 H6 d+ J' g
set-current-plot "Trends-of-Local-reputation"5 C% C7 Z+ L! t% _4 R# f$ S5 T
set-current-plot-pen "Honest service") u) E5 l0 Q& p) G+ G  F0 h, [# o* s' {
end
+ X/ w$ P5 s9 b: O9 {' _" r
6 R0 T* f7 \6 H& e9 o. E[ 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.
% X- h: C) W/ C( \
4 {( s: b$ O, o) }# i1 T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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