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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:% s) z) J0 C/ n- C! k: i1 W
to do-business
. l6 J, a8 }: Q. h: X( D3 k rt random 3604 j) O* h& t% O5 E8 c. Y
fd 1
- S$ z1 v- E8 a& V) D* j ifelse(other turtles-here != nobody)[/ o7 s( X: S! F& H
   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.; R' U7 h6 _3 J
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
( I" e/ I- Q1 s! e3 h8 C   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 T3 Q5 M' X! t# n  c   set [trade-record-one-len] of self length [trade-record-one] of self
/ e! y, e" A' h; \, S- x. Q   set trade-record-current( list (timer) (random money-upper-limit))8 B% b2 c6 N5 A9 Z4 o5 h

# z1 B& `  a+ S5 ?" F/ r( f问题的提示如下:( O- C! H; L' ^4 R" k$ \1 `
3 M2 d' ?8 c$ |0 r/ I
error while turtle 50 running OF in procedure DO-BUSINESS
0 }8 w- o$ M3 q- F* f7 U% \  called by procedure GO. G6 i4 k3 _: _- X: ^3 y: ?
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 |1 K* R$ c( `( M( x* c0 M; M
(halted running of go)
' f6 V! k4 p4 W; A  d! g% n& D' @5 K0 ^, c1 Y7 {
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~~
! j' y! w0 l$ B; a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
) \: r! p; O, o3 x. ?globals[# h( y; `2 ~/ F- U( ~# c
xmax0 J4 K& W  A" ?; b7 B& U
ymax
# ^, `3 D8 v; N  h& q' aglobal-reputation-list+ o4 a' |3 @/ `5 W+ Q

6 X& ^. b5 c0 \" ?;;
每一个turtle的全局声誉都存在此LIST
% Y: S! d$ m4 ?+ c% U. Q5 Bcredibility-list
8 I' {- T' {/ X" n# s( |+ O: o4 U;;
每一个turtle的评价可信度1 V: Q/ g" \# a0 b7 E/ O# ]
honest-service2 T* `8 d1 F( `5 |: H  P& z
unhonest-service: o& t+ Z" c% k& L
oscillation4 h( n4 W4 [! `! q. c" }
rand-dynamic; ^, i' o% a6 n& j& f6 Y3 e
]
4 J  `. ]0 {+ k) R
6 G+ q( _! v2 k8 [% }turtles-own[5 \' b9 Z" V  D" z/ I
trade-record-all0 A* K. R0 A: n* Z- ]2 U
;;a list of lists,
trade-record-one组成
1 D$ g0 n5 X' \" k$ W. J+ Utrade-record-one
) N  G$ _% c  A; b) H2 o- z;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录5 |2 ~, G( c" h4 w* I, {

. P) u" \% g7 j; T;;[
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]]% x/ ~+ ?! N9 g
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]
8 e' ?8 w0 W) Z  ~( F# `$ g* g. ^: ycredibility-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: M% U' r5 d/ t7 U: p$ y
neighbor-total
& m6 ~4 x; _" L1 X8 q6 R) F;;
记录该turtle的邻居节点的数目  k, l- \* i0 a+ K8 l* d$ a
trade-time0 k. H2 z2 \  l
;;
当前发生交易的turtle的交易时间  {* V/ Q+ R! `' q( `
appraise-give
# ^+ C! o/ c" I$ S7 u0 V% i;;
当前发生交易时给出的评价
! T; p8 y9 C* _+ ~! ^, Y# ]% dappraise-receive3 A: {" A- m4 y5 G4 H+ R$ J, s7 x# C
;;
当前发生交易时收到的评价
$ a# E3 [: g$ t" _+ Yappraise-time
# V" s9 n* W9 q4 |$ W& I;;
当前发生交易时的评价时间  j6 b$ B7 p) n
local-reputation-now;;此次交易后相对于对方turtle的局部声誉5 m. z; P% s. _
trade-times-total7 c9 a" a6 I  s4 s3 t% r
;;
与当前turtle的交易总次数1 |+ |3 c- d; d5 P' p" V0 @, j
trade-money-total
" |1 _& x9 h1 H0 D3 a' N;;
与当前turtle的交易总金额
$ x/ l9 F! l& P$ Ylocal-reputation3 Z5 R8 d3 a. E
global-reputation
2 E+ z5 y6 T$ ?credibility
. Q0 G/ R4 x1 o3 D7 D4 `;;
评价可信度,每次交易后都需要更新
$ G6 E  |* M  F% ecredibility-all, @: q1 t) x0 m& S/ R2 c
;;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
8 x, z: }, L+ K6 a5 E7 h6 l9 n+ L, D# h7 z8 t, r; g5 s
;;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 S5 J( Q8 O& s& I# [0 }credibility-one) r5 ?3 F0 e1 X' h
;;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people4 B: B6 y$ A- S- \% K) w9 F! j% S& y
global-proportion5 D9 v- O3 D$ x
customer7 g; C6 H* h% v( p
customer-no- ~( h( E& [1 R6 p
trust-ok" H6 Z' O( Q% D1 H0 ^/ h
trade-record-one-len;;trade-record-one的长度
" X# B& Q0 E4 s' @& ?]
" W0 j6 l4 E, F" O$ X: Y# v" ]# Y" T( a$ v/ F9 P% G
;;setup procedure
, T& z7 ?3 L3 M, }" [
6 w( U3 ?+ F/ x; xto setup
/ z! Z8 f% j0 `5 t  c& o+ t) |6 ~7 d/ f. s
ca

9 w( _. V/ Z2 b' v. f2 s- {/ i3 F# }% r3 K$ L0 f, m1 H
initialize-settings

5 ?8 n2 v6 r) _+ V$ M) ]6 J6 O/ }# O2 D! L
. F5 }8 q/ i8 P: Zcrt people [setup-turtles]

1 d4 m8 l+ Q$ u/ R! z
' s. Q% j) I, P' V; A4 K8 preset-timer

) |2 L/ _1 w. F2 d
8 s6 F! D6 S7 t8 f1 @poll-class

; p. T- N, y7 ?6 ]8 R! @
8 D! ~" H* Q. j! O. csetup-plots

+ T( u! u! f7 h% ^0 F' |5 _% J+ F
& M' O8 N8 w. qdo-plots
3 t$ s* p4 {+ Z
end9 h  a( ^6 S  `! ?' L
- O! \3 k- o( y$ u
to initialize-settings
+ C* c1 b1 \9 d# A6 U0 d( Z
/ }7 @. V: n& @9 J0 O: L; z. n8 e) Sset global-reputation-list []

' L8 |% ^  a1 m+ \
5 w% C& L6 D# \9 D, p3 n/ f; \5 ^set credibility-list n-values people [0.5]
( U8 \0 G/ w) X
6 w5 N; V4 S% M7 I
set honest-service 0

, Y: t# [5 X" _/ r! l7 ^8 b+ C
. S! T, \( j/ W5 Q( M+ J# o5 vset unhonest-service 0

& ~- g+ b) O7 `' a. t  Q+ P  Z" K9 Q' t% ~  W% s: {9 ]7 S2 _% M
set oscillation 0
+ O, E* M7 N* }& n+ |2 r
8 K7 Y# k# W+ p" Z
set rand-dynamic 0
) d* I3 U1 K  s/ b4 Z
end' k2 ^3 c# ?/ L$ s

. x3 W  N: S7 R6 ~to setup-turtles " h( b0 S- i2 _' o# u0 v
set shape "person"% d4 [+ y$ ?7 j$ u  Z* Z; ~/ q
setxy random-xcor random-ycor/ y# l0 s7 G0 S3 y5 B$ G: @5 c* q
set trade-record-one []
( H. S* g# h6 L

% m! u2 p" x. s6 Iset trade-record-all n-values people [(list (? + 1) 0 0)] / I' l9 [0 r6 m8 C+ O8 B: W
& U/ z# U2 V' y; s
set trade-record-current []) B2 a6 P, _: k5 t$ O: J
set credibility-receive []: D, h1 x, [1 I. c
set local-reputation 0.5# N' O: D$ E: H' C
set neighbor-total 0
# W$ O0 \# I7 S/ eset trade-times-total 0
7 K/ E# D2 ~, d6 k& @- Mset trade-money-total 0
8 W0 K2 l( u& l- `set customer nobody* v3 X! w# I2 Y+ H
set credibility-all n-values people [creat-credibility]
" W) i7 r6 G8 ~- vset credibility n-values people [-1]1 h& a6 f) f" w$ U8 c) ?' r% \
get-color
1 Q3 s4 u) r( S: O: |# L$ c
6 o( `/ t8 d# ^: I% j) H  q. X
end
9 ~5 i9 k! N* D1 s1 d/ h5 P* M2 S2 q' w1 T& R" B9 n$ a
to-report creat-credibility. I  s5 J2 j0 o$ I) q/ H5 }
report n-values people [0.5]9 h' J0 k! }9 `
end
0 \! n5 G3 |0 v0 ]8 H
5 s8 C* W  w% D: w+ K0 b# P- \to setup-plots
2 f* L: R3 U: k) D$ H, A* |5 z; Z% @$ t/ F1 d" L5 J
set xmax 30

: T6 o; S6 N8 c/ W, l& K2 ]7 }" x+ E  Z# c5 A9 s
set ymax 1.0
. j: L$ V) _1 P+ D
+ Z. ^7 Y: y+ r$ P0 d9 S3 W
clear-all-plots

9 ]; H% l% }- M  r' ]  K1 ~0 ^7 K' d' p5 o
setup-plot1

4 X6 U0 b" e# W8 _; s. l+ I+ ]: f( R9 V) K# p
setup-plot2
" u1 m" M$ p4 [; S, W
0 d! y) y8 k. h& {# [* Q0 l
setup-plot3
% S! w3 v9 |; Z2 {
end
, b  o, n/ l$ x- n/ K8 p; }1 K( ^1 l. N# T4 m# d' i
;;run time procedures
+ P* H1 q" @5 I/ {* B2 N* Z
2 y: f: d# c2 E& ?- Y* m; `to go: S, U3 y, M9 p7 ^( W4 \) L

* a: O2 N, u" n: B: nask turtles [do-business]

2 D7 J. ~, B5 S  g2 y8 F& ^, Aend3 A% M7 `! ~8 I1 |8 u
& ]3 R, d: V  n( s' ~+ Y
to do-business
; u2 k- g7 N0 [
) h  z+ T9 t# }+ Q  Q& \' c7 r) y
( p9 Z6 E' [# S" A
rt random 360

( o9 |+ d( D/ ~( I% K6 O, Y% J  A
8 w! G& e8 l( v) D, ^fd 1

- \6 u" l9 I2 r6 x* W& g% l1 k9 P# U$ K& l
ifelse(other turtles-here != nobody)[

6 h1 r* W+ ?- a" z) K% @1 \7 f; h3 _3 U0 V! V! _6 J
set customer one-of other turtles-here
( g. E3 m& N  v  p2 G" S

& y& a* `% `* \3 N' s8 x;; set [customer] of customer myself
7 z& K' s# H& I/ Z0 \1 F' o

$ h& d, L: S: Z/ K) Z% kset [trade-record-one] of self item (([who] of customer) - 1); e3 [, p0 ]  N
[trade-record-all]of self. Q3 }, a- M5 ]0 z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, d2 H  w& {0 v( S, |  J/ k# e
; I2 {* t/ a* _4 X6 G7 H+ \
set [trade-record-one] of customer item (([who] of self) - 1)
1 m. c; e# _& g& y& |[trade-record-all]of customer

4 E. L6 e% L1 a* t' a+ O" v! ^6 ]# R$ h
set [trade-record-one-len] of self length [trade-record-one] of self
; |  U- r+ R% p( v3 M% P- B! C
2 b4 T! j( _' m8 R
set trade-record-current( list (timer) (random money-upper-limit))
8 U  a5 C9 `7 X0 R$ u% C; S8 o# ]
  Z$ ~; y4 e/ r( z
ask self [do-trust]; ?. x2 E$ m* M( U. q# D6 T
;;
先求ij的信任度
6 v5 `' U% q; T3 c! q, p" S. E9 q; D2 G
if ([trust-ok] of self)
; r5 l0 k; r2 w, F' Q;;
根据ij的信任度来决定是否与j进行交易[* P. n& k( Q6 K/ \
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& x, g; x0 |; P3 K+ j- o; _& u* K) [0 V% ~
[
# k9 y- j6 G0 g7 i0 o0 f& C
% R' z" z& Y& I: t8 e! ~
do-trade
+ V; M9 p2 [% L$ N0 Y0 `
$ q7 J1 n9 n3 E+ k, l& P
update-credibility-ijl
8 a6 f" R8 @2 ?4 ]9 ^. i
9 o2 p- p; a3 S4 J$ o: C1 ?9 s
update-credibility-list
( J. U7 b/ N, i% |7 R: G
" t, R0 r4 H* f( {: U" Z

* w# x; L* Y% F1 ]! ?6 @1 Xupdate-global-reputation-list

8 P7 Z+ C2 ~, ^7 H. L( \0 q( P
( \* K* `. a# ^$ wpoll-class
# |, V# B$ o- V3 |, N- L

' t- s0 G, T/ A% [! yget-color

$ M+ C  J3 K4 h! A" y4 E- B& d) x8 P' f
]]: Y% O4 ?4 _1 R
% T( _% X+ g) \( o: I6 [
;;
如果所得的信任度满足条件,则进行交易
7 o& z1 p/ w4 I9 H, T1 Z( u
, @* Z6 _0 |, S. o- X[
1 m  H& i$ J  o% h2 h$ i; [( p

0 T0 j3 Y5 P. ert random 360
! X. ^  x* ~; y1 n) ^9 o0 ]# q9 U

* w( V: M: Y2 m  k/ B  Y) R/ a+ Kfd 1
# i5 B7 x  ], P, @9 C& k( c" \
2 V) Q$ l) m- [/ ]
]

1 t  q  A. e& `0 Z
2 ~! [+ v( y" f# l+ P- R' k/ M, Oend

  j$ H' z4 P+ V* D, I6 p, C: y4 H1 T* X9 @
to do-trust
) G( v/ o8 N2 e8 Q* d3 ^  fset trust-ok False
" N# F, o& X* h2 D0 V% W
. h4 ?2 E( ^- O0 w" C
% v0 E& O+ m  L8 Q
let max-trade-times 06 }) ~. X0 V  `* l! ?3 E% o
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 _+ l8 C, `" f9 m
let max-trade-money 0
/ \" K% t8 B& C' @' Yforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
1 f) w; ]( R# U$ z! I3 n% `- dlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 ~( U+ ~& T4 x$ Z7 C

1 o9 D* P4 u) j  e) m
$ c! P, r8 W, h4 g' C
get-global-proportion
+ p$ V0 a; `9 p# u, dlet trust-value" l7 n; E" I4 I9 W6 s* R1 S
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)
* M" G: H7 G7 y% B9 }$ B" ]
if(trust-value > trade-trust-value)
( A7 K. ?; t5 N- `  h: i[set trust-ok true]- M% W0 D$ r. K5 ~
end9 P- [7 n: J0 ?0 k

; ~2 ?9 g& D8 K) a0 x+ ?6 \/ zto get-global-proportion
2 \& f  z' @% Uifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): C3 ?9 O5 @5 {1 ^6 j
[set global-proportion 0]
5 c8 \9 A3 g6 l$ i& X[let i 0/ \6 ?- F$ A1 Z/ k7 {  i. n
let sum-money 0
( x9 V" c* F/ t8 M- Twhile[ i < people]
5 `1 U! @) F% U/ \  _3 r/ m# }[; J% [) S  A: a1 V0 v  z7 k
if( length (item i
/ T; p  t6 o4 P; P[trade-record-all] of customer) > 3 )

0 D: J9 j1 Q8 ?[/ a* r: {4 V# W9 F. ?7 {7 L& n& Z, \
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( n2 ^% r0 |- m  d1 v: L+ L]
. s% B& }! }6 o7 m" v]
! B; a6 q# M. |  Rlet j 0
0 R5 X9 e& t% ]0 o* dlet note 09 R  f2 Q6 E, b
while[ j < people]
3 i! k- M- \2 `7 k, r2 t[* j5 T& t# [2 I- z, M' V" a
if( length (item i
' l- C: F6 y% C% l! a[trade-record-all] of customer) > 3 )
7 q) ]3 f9 _* w( h+ W0 {
[
* w8 h% D( x2 n4 z. qifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 J. e4 Z) _: u: N8 s7 b
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]# e# m: V. g) O
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]8 o- ^& W" p; f# @9 H! R7 J1 g# ~
]. C2 I9 p  g7 l! d
]6 Q3 u+ Y6 o6 c. Z
set global-proportion note
) T' z: ^3 j) Q5 z* `]
+ @# k" f4 ^  {& c" g( O7 S/ [end  f0 T0 q( _) b/ A/ z: {, w# p

9 I4 e6 C. j; a. a; W$ Xto do-trade- h; v& ~( r% }2 h' N
;;
这个过程实际上是给双方作出评价的过程
* \: B9 |9 X4 j+ S1 O8 L/ m( Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 ]3 A% m9 f  a  Q) ^: _6 y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
" w0 y; i% @# Rset trade-record-current lput(timer) trade-record-current
2 U/ X/ }/ H0 y* {  D- C;;
评价时间
6 \* q  n' g* F' i4 m$ p  A4 ?ask myself [1 P' c% E5 J8 q! O' S
update-local-reputation
, j" g/ \2 Z9 D8 p  Q- [; iset trade-record-current lput([local-reputation] of myself) trade-record-current
4 w- N" m5 z# ~" O]
1 z/ {1 j9 z" O; Z0 U0 y3 m. Vset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
$ u5 [% F' f1 j9 d: a5 y5 m;;
将此次交易的记录加入到trade-record-one
3 Z% ?. V9 `- ^, R0 l7 t+ jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
. V! Q6 y# B# \, p2 v$ m& U5 Alet note (item 2 trade-record-current )
$ R7 [8 X5 p1 Z- R) k5 Yset trade-record-current
' F3 W/ }6 B+ D  I' ?# a! t- M(replace-item 2 trade-record-current (item 3 trade-record-current))

6 J$ q; ~: L7 i5 O, M) kset trade-record-current6 A' p' F" _9 Y; }: c& r8 J+ ~
(replace-item 3 trade-record-current note)" w: L+ ]; g5 T

& t1 m9 G/ u0 d- O1 b
0 h8 Q3 a# @* V1 ^- S. b
ask customer [
: u. V2 r& v1 ^3 _3 K! tupdate-local-reputation
! ~$ x9 {# A. k! B8 T, s8 |0 ^3 Oset trade-record-current
, y8 }7 }$ O( Z. u. I+ M(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( `, F* @- D2 H, ]; J$ S]4 [5 T' h: _9 F$ m8 w

* f6 R, g! r$ g3 r/ a% D2 V; n
! ^/ S4 g- c- |  I  Y( Z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, S0 z& W8 `7 I2 F3 T9 S" B- ]: z
  ]4 m1 O& G. \- S0 C* |3 J
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); f1 r% g5 A& L7 ^
;;
将此次交易的记录加入到customertrade-record-all
- z6 W* R$ b/ t" n4 I" rend4 K( |" T& t; E, f! `

. J: |& t3 i# a2 n" J! ^to update-local-reputation
  v2 r' q( |$ g9 _" L5 G! `* L4 vset [trade-record-one-len] of myself length [trade-record-one] of myself
* b5 [. ]0 f  S( x% {& z! j. Z2 a

/ Z* T8 t& M2 l0 J" r! S;;if [trade-record-one-len] of myself > 3

  T& r' L* k$ @! [4 }update-neighbor-total
5 G6 Y1 M1 K5 }- b7 P;;
更新邻居节点的数目,在此进行. O4 i& t& Q/ s+ E0 }9 e6 {$ b
let i 3  D7 G  s' o& f3 o
let sum-time 0- |$ a* a; W' |8 U/ ]
while[i < [trade-record-one-len] of myself]
3 f! q& _1 M! f[
' i5 A" h2 t3 {# }set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 F, \' [" J, w! z
set i( r# ?7 Y/ X/ q" Q; _+ G
( i + 1)
; s, F- F% W; V! a$ H, @6 {8 u
]$ d7 O6 R& }- V1 r
let j 3
* O! q: ~. W' T, H5 Ilet sum-money 0
- U" Q3 n& @# r9 |while[j < [trade-record-one-len] of myself]
, x8 N! }( h  n3 R[4 f' g) r! \" P4 k8 J, 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), w7 y' j$ E* j8 n, X& F  O
set j
6 H3 s. b) _! G& ~& w( H) R( j + 1)

4 L2 q& p$ Q9 k; y3 l! u' {]/ l  V4 u2 i' `) ?* z. R3 f. f
let k 3
! @) `" P( f+ k: n; w8 E# ^' i$ i: \6 rlet power 04 q! p: N2 n3 s; E
let local 0
% E* N0 D6 F* i5 L; P8 Vwhile [k <[trade-record-one-len] of myself]
# V7 P- m6 J' P& T9 X[6 ]  x; _/ k" w. q7 @
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)
( \* |: l: _1 p* P/ v$ dset k (k + 1)" S! t, E, G( Q; i  \' ~2 {1 u
]
* ?3 V" @8 @* b' Eset [local-reputation] of myself (local)4 |# M$ N, b( `
end) }/ [( `' L' U
6 B# l: K: U: ~6 y! i. F
to update-neighbor-total  `% i) r, G1 _# t% Z5 {
9 g8 C7 x; m" `' H# m' m+ b
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. j; O4 Z: i4 D: J4 \

( e7 \2 _- T7 E
8 U! Q# \5 Y8 |' m1 M; n
end0 S. ^' f9 f% F% X4 Q7 |

$ I9 s5 y) d' G- F! {0 e/ F" wto update-credibility-ijl   ]! k) n; T* k- i7 M1 X
5 `; Y5 R0 w/ w! {2 m; y
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。' W- H( K, b% H( F4 O
let l 04 K9 ~& j6 n, ^
while[ l < people ]
9 w- O9 m$ X7 O; M;;
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
$ q* r; Z) W9 [9 g1 \[. i$ U+ h& \! V. s& m
let trade-record-one-j-l-len length item l ([trade-record-all] of customer): J# o/ J! e6 w
if (trade-record-one-j-l-len > 3)  `" D2 E0 Z  h# S& r/ N
[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
' j- F: e8 g8 L* ?$ p9 V  o1 Rlet i 3( [7 Y1 E, q& F8 f5 q
let sum-time 0
! {1 X# [% S- T# b& ?# Rwhile[i < trade-record-one-len]+ A, ^6 U% n* s, t; R4 z$ g# Q( X
[
' J$ g# I% g6 i5 _# k' cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ S6 x! f& S% v
set i2 ]+ w( a1 I3 m1 x" E1 I4 s
( i + 1)
6 g1 T1 n& C! `4 l# {$ x+ D6 {
]
2 k3 i/ c& {. k5 s3 glet credibility-i-j-l 02 D. H& X' n% ?6 U8 _( k% Y, f: n
;;i
评价(jjl的评价)
* V* C: K4 u0 q. e2 Z) u1 W( }# Y& Llet j 3) k0 l. S9 |" X! G
let k 47 I0 w% [$ n5 e4 h# f5 _
while[j < trade-record-one-len]
% c5 l+ W3 c6 |. F. U. M  P[/ u2 L$ ?* X( ]& V
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
5 ^% K# q# C1 v) |+ V- qset 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)
# V! Z; b, t$ Z- ?- v$ ]% F$ sset j8 z1 O; x0 S" ~, M
( j + 1)

0 B$ F5 S; z: @% _/ R, ]]- u/ c7 W4 {0 p" l! R! J
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 ))
: H) l5 ^/ ?1 x2 G5 ~7 x0 z0 Y* S. k7 R0 Q) y. t5 s& L9 I7 ^- R4 c
( G) Q" J* l& n" C4 e) Y; w4 F4 G, ~/ g
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); d) ]- r" I; Q* j$ J) V: A
;;
及时更新il的评价质量的评价  C4 S/ d. i( |# _5 p8 t* n; d
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 u1 ~& Q$ {, x& `% ^& N4 p
set l (l + 1)4 U3 }7 x# h3 Q$ k1 ?
]+ z# j" B* A( G+ {9 ^& G/ F
end' M. N" ^% A& r

7 ?. u# P4 t4 \0 m: s* f! wto update-credibility-list7 S( `/ V( v) O1 L( e1 d' a0 [
let i 0
5 b: {" x: t6 cwhile[i < people]. j4 a% p" s% ~6 \; b9 [+ B
[/ {: a* H: N0 ?. R2 A" k% x
let j 0
# I- f' j+ P" q1 a5 nlet note 0, Y- u2 s: b: l8 ]
let k 0% V$ K/ q6 N0 i7 C
;;
计作出过评价的邻居节点的数目
: L/ ^3 Z8 v' r: wwhile[j < people]
! }7 x9 h: S; }0 M+ H( H* U[
" K; T( C3 o0 v, E3 J* B" c: `if (item j( [credibility] of turtle (i + 1)) != -1)0 \" x5 h$ v: I) q$ U) V- M6 x
;;
判断是否给本turtle的评价质量做出过评价的节点
" m: G+ s0 A& V9 ?" J$ l[set note (note + item j ([credibility]of turtle (i + 1)))
3 O5 j& ]% d' S( ?) y+ n' g1 P;;*(exp (-(people - 2)))/(people - 2))]

" x. g  B4 E1 N" @8 p, @- o( @, Sset k (k + 1)( M! N' \( Y6 X2 J+ h3 B9 @8 k7 u
]
9 B! ^! V9 B1 n4 f. Fset j (j + 1)
& a( K  p7 b* J]% j. I9 F. W+ E  F
set note (note *(exp (- (1 / k)))/ k)' t3 U# ], T. i
set credibility-list (replace-item i credibility-list note)
! r4 U, s& a  }& `, j2 fset i (i + 1)
( Y4 P1 z& p' p0 v% f# R]
6 O9 Y/ x1 i! Cend7 y& Z% h& {4 d: N. k

1 ]& }( ~: Z8 {to update-global-reputation-list
7 G! Z. K% o5 P& Y* F( ?5 J$ rlet j 0% L- d; A/ ^" l6 N
while[j < people]. }) h/ [' l$ \+ n# A
[
4 u& C3 V+ ~" k8 c) Z4 ]  Z9 Jlet new 0
- x7 C  @2 A4 b& u1 d7 P7 A;;
暂存新的一个全局声誉3 d! [4 S  j- ?$ R( F' J2 W
let i 09 v$ c4 Q  x) f2 q
let sum-money 0; S2 Q7 v& F6 r' _1 h, D
let credibility-money 0  i( g' N4 H2 e$ K) H2 W
while [i < people]! a2 D: W1 R' }" f4 m; o5 _
[
& i% I/ ^9 c& ~! jset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ M! v' [& u4 Q0 e/ i4 c% h2 f9 e; B
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( ?+ z/ Q( @- U" f' \! j
set i (i + 1)
0 ^$ R& m: W! ^) B: R, |5 R]
) ?. F  e4 [( a6 U* @% f1 Vlet k 07 {0 g  g" |3 |3 g! d
let new1 0* @/ I8 E1 n+ ]  e
while [k < people]4 v$ [5 k5 C- i1 C' v
[$ P4 a* Z! r& ~5 f# I0 g
set 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); e4 ]  J% T/ N' j
set k (k + 1)
% x' ]* ^0 O4 V9 W8 s]
2 @$ J  V1 p3 X" H  v8 U% n% n( hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ R) k; Y" [8 @7 D2 @& ~set global-reputation-list (replace-item j global-reputation-list new)
- ^. @. B" K3 [set j (j + 1)
' a* _. T2 ?  l- ~( @) {! \# f]( `, e8 I7 D2 Z3 z
end
+ j6 J$ E7 C: @  e
) m; \! ~5 B. Q. ~, Q  x! V/ m+ T) S; W

7 o* ~% R! `  D6 x/ y) P3 M; Mto get-color
/ U) N  U8 @3 A1 Z: e* ]* H$ N7 P% D: k7 J% F/ e
set color blue

/ A- h( n" p& V, k2 Fend
* j2 t; V2 t' V' i9 ]( ^
- ?, G7 Y. C0 q$ N9 E- Nto poll-class
8 f) s/ k: x+ @; l, y: j1 oend
3 X) g$ ?$ {' g6 ^* }" w! D4 ^8 c; _/ m9 D8 @7 y! L3 N" F& r
to setup-plot1
1 H/ u9 y- D( x2 r) Q# V8 z8 X: K7 d$ \; n( U
set-current-plot "Trends-of-Local-reputation"
/ Z: z, p9 C% n  Z! o, P  A
" e, }+ f$ `, c! ^" c# o1 B
set-plot-x-range 0 xmax
6 {7 Q( J( _& I. X
' j' [7 D$ Q- E4 c$ G% N: f
set-plot-y-range 0.0 ymax
+ z, L4 c( l; ^* W( |9 o
end
3 Y$ s6 \8 t  ^, L
8 }' d$ H; X- [2 a! yto setup-plot2
9 J* y$ J. G, ?- m! E2 I0 Q6 K0 s& `
' ]) D! L0 S4 b. N1 tset-current-plot "Trends-of-global-reputation"

6 a+ M2 x: a0 D: F6 d$ x  i9 a5 S* c
set-plot-x-range 0 xmax

5 X% _! ?8 _1 B0 i# Y3 S" m
4 P: B1 D5 y% R9 u, Cset-plot-y-range 0.0 ymax
) _$ v' ]8 s5 K$ A. V+ G& k0 R& ^
end* N/ m) ], I" Y8 J7 P2 g
0 n) d. o9 l- n; d
to setup-plot3
$ J$ W) N% O% ^3 L0 D8 U4 T% Y$ r+ x; p
set-current-plot "Trends-of-credibility"
/ c' X; ]1 M/ ~* N- H2 l6 w
2 G4 {( T4 v% B8 @
set-plot-x-range 0 xmax

- H7 E& ?. V8 `  x* s& c* q  U. I9 C+ E) s! c. x" f
set-plot-y-range 0.0 ymax

, |( I2 t! X, m; Qend
% }: \, z6 M  f* v9 l0 O3 s8 t- }- U
to do-plots$ ?5 e, h2 f* b# b
set-current-plot "Trends-of-Local-reputation"
5 d8 I$ x" [. ~: {. e* Jset-current-plot-pen "Honest service"
. K5 R7 ], q; t. U0 tend
- m, F( e6 o( V' n: Y
8 W( e2 a1 \& R' Y9 C& h, L[ 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.4 T9 {( \# m" N& b7 i* Y
0 g) {: ?( H2 u4 A
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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