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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:
  s7 b+ S( E& u# j! ito do-business - L. I) u6 l) D3 X0 S) A
rt random 3603 f7 z  `# e4 S8 _9 i) _" s% W$ c$ K  j
fd 1
  m4 N2 p# c0 G: i ifelse(other turtles-here != nobody)[& X/ C, m9 X, f1 G
   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.
) T9 m5 a5 u; w. t   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( C; i. y" \- q  W
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 O1 x( n( n+ N; {! Z8 X   set [trade-record-one-len] of self length [trade-record-one] of self
- M- R, U) W9 @: F   set trade-record-current( list (timer) (random money-upper-limit))2 m( u( Q  l7 @. x

( ^  J, q8 q! z) X3 _9 V问题的提示如下:0 z: l& r* a* ]; ]! A
6 Q; r8 {: g$ O; L( ?* I$ P  _! c  C
error while turtle 50 running OF in procedure DO-BUSINESS
+ b  G$ o1 F4 W% m4 G  called by procedure GO
; q$ L: G! D( R5 i- s0 E# fOF expected input to be a turtle agentset or turtle but got NOBODY instead.
+ `* }8 n$ _. i, H+ j9 ^/ X( f
(halted running of go)
% c# A  i! R! s8 x
: R4 F& k0 B! P0 C9 O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~~
! `* Q6 i+ B; S% B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 z. U0 W6 ]6 |& U( sglobals[: }8 d* `7 \9 t3 m0 o) `+ n1 A5 ^+ S2 h& t
xmax2 D$ X9 P8 e* z2 S2 Y7 s
ymax
) G/ @& F6 m; d; aglobal-reputation-list
  _" u" L: @8 m4 \2 h4 c( O1 ~5 G$ n+ t+ B4 O! `2 \7 S+ U
;;
每一个turtle的全局声誉都存在此LIST
. B' _. @& ^' {. M  Q9 t: e7 Wcredibility-list; ~0 h) y$ a, _1 u  U* U6 o
;;
每一个turtle的评价可信度
$ t% A# P7 M6 z$ [6 Dhonest-service4 o) `1 S4 W4 a* M
unhonest-service
) ]# I1 w6 j9 L5 F/ |7 aoscillation
# U" V( u2 U( `' e4 N+ ~5 K; @rand-dynamic
' I, q2 ~3 L, d]
! r8 g4 v/ \' e# r
: ?$ a% p* @" G  X( x' _( f9 Bturtles-own[
' |, @$ o  Q( s; B/ Z+ _trade-record-all
( V4 T1 ~8 w; [. g. s;;a list of lists,
trade-record-one组成
3 \: O0 h! W& `" \trade-record-one
+ \3 [) @, [# \0 x+ B; W: L7 S+ 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
- @' k0 t( I" p- T" K4 u7 p5 a/ i( V& |+ w$ _
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
7 ?# ~, ~7 b: G8 M% t/ Otrade-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]
. X  G8 c' }# Q/ `6 ^' v5 i1 \4 e: qcredibility-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
3 i2 u1 M% k& d9 d" q" u+ [) e( Tneighbor-total. {) p/ F; q, O$ R6 _7 k+ N
;;
记录该turtle的邻居节点的数目
" N4 @' ]# Z2 C2 L, w$ htrade-time
9 T3 K5 ]3 a0 n* a;;
当前发生交易的turtle的交易时间
; J5 k4 v! k* v. _4 M# S3 \! yappraise-give
5 }6 v' @: O/ l4 S/ L;;
当前发生交易时给出的评价* w1 o1 v) |0 \- y; {9 C
appraise-receive
" W- G- c" o3 Q3 u, r& S  |3 \;;
当前发生交易时收到的评价7 x- `8 y0 E  b: [
appraise-time3 n. M) c, [. A4 _: [7 v
;;
当前发生交易时的评价时间
5 ~% L( H$ y* o0 m3 A  C5 f/ Clocal-reputation-now;;此次交易后相对于对方turtle的局部声誉1 i% I- Y+ h/ A3 N: g8 d- \7 \
trade-times-total
5 `9 M4 _. u' T- u" t& J;;
与当前turtle的交易总次数
# t4 K; r; D) Strade-money-total
0 Z, d1 s2 z1 D5 i% A;;
与当前turtle的交易总金额
& X  {5 j" l+ z' _/ I) dlocal-reputation8 k4 [  a0 h: ^0 k
global-reputation
' u2 @4 N" Q9 k, M2 A' ?# jcredibility' ]9 S! N' r. T/ L
;;
评价可信度,每次交易后都需要更新
7 }9 s6 l, m% v, fcredibility-all" V4 t* ?/ V+ p
;;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
, N! z2 ]( g8 D2 E. T5 V8 H/ D" r# b; D' ], d+ B( D1 f  V) Z
;;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0.51 |! C0 _4 z: Y, p1 o6 S
credibility-one
. b8 z/ @0 T/ V, \6 `;;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
( W& q1 n( I8 \& r3 r$ W! Pglobal-proportion
3 m0 K: f: `; x; d5 k' q8 k8 Wcustomer* K, n5 k3 C, W4 r
customer-no
8 @: ?& w1 ^# \) Gtrust-ok* r) b( [5 r8 ?( i. V
trade-record-one-len;;trade-record-one的长度
7 B0 f" c4 n0 K, O$ J2 g' I]! ?0 t1 w* v$ {- W% d) w

# G. O' t* }6 T;;setup procedure0 Z. U/ n& z8 p7 W) E
- u$ @- U' i# R* [& F
to setup* d; j& S0 N. ~2 l* W  L4 S

0 C4 n( o% N3 v- b+ L, gca
. Z6 u7 u2 F+ Z8 |0 h& a

+ y  Z! Q% b9 e% oinitialize-settings

9 \& Q4 M/ b+ \3 i# D% t7 v  |8 ]0 h6 S
crt people [setup-turtles]

, j0 O' `0 A( D: [7 n+ [* P, d4 {2 ]9 f
reset-timer

% M$ X5 }% T+ L; ^; e. y4 l. h! k4 n
2 M: T" l1 }; R" ^- L/ Gpoll-class
; S- |) ]. `8 [  G& j

8 L  j4 w: W+ j6 X* ?) A+ qsetup-plots
' [/ U; \* g5 b# p: h. X# s1 e
% q( j9 i/ b& F" {- M2 Z7 _
do-plots

/ i3 q3 \$ V4 `9 k" \  Y% dend8 _7 ?. n5 R# \6 _6 z: B% T! i

* u7 l; |) v& C7 P7 `- bto initialize-settings5 w, x# g. E( V* V5 {

7 K% A1 ?6 f& X: h2 G! _set global-reputation-list []
" k" S% i% _7 e; J5 j" t2 ?
2 Q7 \; \" ^) W( ]9 o5 X( A4 ^
set credibility-list n-values people [0.5]
# G: }9 O: U# S# H
8 |( g2 x0 ~7 j% z  T
set honest-service 0
, b/ K+ h. h4 u, W3 [* Q9 o

$ l* j6 N7 J0 \7 f# pset unhonest-service 0
, f: G4 C1 G/ N9 \1 k1 e. s

3 u3 n+ e: G7 Q5 J' J1 G4 ~: [set oscillation 0

5 P/ |( `; T( [5 ?/ b5 T4 G4 O; A% J6 }# a/ }, Y
set rand-dynamic 0

; o) X# j/ ?  _! \+ k/ Q" t% m0 i7 Bend
4 ^4 r% O1 Y6 w, |6 U* z$ m; M
) S9 R. B! a# d1 w# q' v9 bto setup-turtles
5 \+ j4 d+ M. L" V6 xset shape "person"
2 w$ G% N5 z* x! k6 u& r: s9 ^5 asetxy random-xcor random-ycor$ ~0 f: x, w  ^# `1 S) N8 e; N) q0 o
set trade-record-one []
. U7 a8 d, d9 [  T, c: B7 O

! G9 m1 a$ w8 W# ^set trade-record-all n-values people [(list (? + 1) 0 0)] 0 _1 [5 D! B" r" x5 Y3 M# l" L
6 N& R; D) b& B  X# |
set trade-record-current []
0 }* |6 v6 v3 e) L% C8 L6 [/ ^set credibility-receive []
; ]# F4 d4 B' B# lset local-reputation 0.52 R$ D$ p/ ?3 L! }4 l
set neighbor-total 0
7 u& c. W, G% t  ?8 T# e- h. dset trade-times-total 0
9 k% Y8 c  ~+ H! Uset trade-money-total 0
+ m* c8 u6 v0 n& c8 W0 q4 f4 o7 ~set customer nobody
3 j' [! a& R  uset credibility-all n-values people [creat-credibility]
* D, e! m# _/ M0 u' T2 q, Iset credibility n-values people [-1]
0 \" |* _# K$ J2 F- Pget-color
  I# B" W# Q" g; f
' b" t+ |6 G  r4 N* n( \
end5 V- e6 G; V4 T  `
, U# m* Z7 |$ A
to-report creat-credibility2 ?: \7 }2 p# d& W2 z8 Z
report n-values people [0.5]
' c2 C" P" l) B" G& H; M0 bend
% x6 X4 j) k" i* D7 t; w& l2 j$ E1 U$ F9 V" B# I
to setup-plots
3 s/ `; {& @6 [5 B" f5 y- y
+ C$ Q. R# A: L& H. O) m  t9 ]4 g3 iset xmax 30

# M# V4 S: B: s4 k6 S% S8 W. @6 |  j8 l7 r5 }1 B
set ymax 1.0
0 F) r9 ^4 E: M" I

2 A( @* k1 i$ K) ?0 {6 Kclear-all-plots

7 C) V4 _) T3 d) p$ a
- h9 }! y% v) Y8 @" J& k3 V1 |setup-plot1
- V8 W& I. ]; d9 m( k
8 R+ `9 F2 l' }0 G3 w
setup-plot2
$ N: P5 R9 A5 e9 I5 |
* i# q8 J5 e! I+ @+ N- k
setup-plot3
$ h. c  t5 w1 Y2 ~8 U
end
; c3 }4 Y* H2 [) D' C
# k. K: Y% s7 |7 R( O/ a. \;;run time procedures
, W* d; A7 [& y! ]5 J. o
0 k: r$ @# O; Q; Ito go
1 c: t- U" r: a" a# i/ J$ [9 w6 W+ j* O3 X
ask turtles [do-business]

/ @* r7 n+ x& e, a  Mend
. [, N, Y' `/ z6 F4 p& {4 X, G% [" C# W
to do-business
, ]4 F. C! c; C7 D  Q

2 d* q+ P6 [/ p1 C
, y- {/ Q1 ]! @# R! irt random 360

/ ], b& z) o; m
. r' G+ S% b" @  Efd 1
8 b- d2 S7 j$ Y' S
* {! x3 W% ^4 G7 R% R5 k
ifelse(other turtles-here != nobody)[

& [; _7 u' \! {9 I- m% N# Q  d5 i' J3 k* i5 m# @
set customer one-of other turtles-here
4 ~5 w# e9 B7 Q$ I

  h, t( a* t2 O- u7 `;; set [customer] of customer myself
* S& Q& Q) |% Q! C; I' r3 n
- ?- Y2 I  j4 w
set [trade-record-one] of self item (([who] of customer) - 1)
# q  g$ K! H3 c/ V4 _4 M[trade-record-all]of self6 q8 }0 O6 n0 @- F
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
) m6 G/ j& v0 ^+ x

4 ^/ x" v8 ]2 X! Kset [trade-record-one] of customer item (([who] of self) - 1)8 l4 \+ o( z( T3 ~1 _
[trade-record-all]of customer
* M. c6 e8 A/ O

4 M* B) n# I# ^set [trade-record-one-len] of self length [trade-record-one] of self
: G9 m. I* Q/ Y0 V* `7 n

: Y5 ?$ ^4 o5 |, r9 C: ]set trade-record-current( list (timer) (random money-upper-limit))
4 u6 A5 Q; n' ^3 Y& H- H% R
  a' x4 Y- b" l4 N2 i
ask self [do-trust]7 I& _" H7 m$ u3 t/ s
;;
先求ij的信任度/ q1 S$ w( ]: i4 E# N, j# B+ }6 C

4 z  o! \. D% R  h" Oif ([trust-ok] of self)
* H, ^+ S3 a! ~;;
根据ij的信任度来决定是否与j进行交易[" {* M# v; |) @
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" k, V8 C9 z$ T

! m* V, t5 j) g3 ]% w: k! C[

% O/ Q# P9 d: |4 q6 W; }/ ?$ ?5 ?% e' h) o4 z' h* q+ [
do-trade
) ~/ d3 D. f& Y; J" i- A

/ Q- R3 {7 K/ f7 Q- m6 v' S8 _update-credibility-ijl

+ A( r! S8 t$ E2 h+ Y6 [# Y% Z! q
update-credibility-list$ W: K" \' [3 o, z" Z

3 a/ I& i8 y# R4 B8 O$ _9 Q: j: A- U. K6 @. T6 b" t2 R
update-global-reputation-list
" X) j- A& e5 O2 {' y! n

" f( D# J% j& [. x' S/ }6 f" c7 o% _8 Rpoll-class

1 ?+ v: ]; s# _' l4 M0 P! X
/ w  g' G( P0 V7 H( \1 oget-color
: d% O0 D; s% h( Y! a6 T

6 i4 z" Z  `  |; B! F" [/ ~$ \3 M5 ?]]/ G% x! [* P+ X! f' u% y
+ r. {! G) M* s. y# A# e8 ^; p
;;
如果所得的信任度满足条件,则进行交易( B$ P8 D9 |) j* x$ F6 {2 ?
0 ]6 A+ D! I! q
[
4 G2 w, T3 b4 X  e0 U
( g5 k4 s. i* E6 C. G' J* E" n
rt random 360
1 V+ T2 o" N4 g+ s7 ~& U' P

- i) j4 ^8 Y" a$ g1 dfd 1
8 X: |8 k; G, F& g( s! x) m
4 ^  ?( x* f. t/ @
]

8 z% C4 ?! K& Y, c/ O. B$ n5 R
9 X! l7 f0 F2 [5 e8 B& nend
" q( {% r9 {+ q9 e% L) ~

2 t+ x  {7 B! b! U& J, A$ J; {( L: L9 {to do-trust ( g% X: x: R# m% b) ^; _" u
set trust-ok False) N4 Q" q% P- ]; b

2 G8 d! a! T- D  m- a8 `7 Y
3 F; v" q+ g; h1 n4 k0 r
let max-trade-times 06 D4 K  O3 x8 y, E
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" |1 T; G; n) R* ?: ~% h' nlet max-trade-money 0, z% g& j5 D, ]( H  g2 ~6 X  G
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 l% X  @" g+ ^  i  H
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 j! ^+ q7 [, y7 X+ Q/ J$ a6 Q5 f: `. h2 _. M

! e  m- y9 W6 C9 E/ u5 hget-global-proportion% h% _9 [+ j& g0 i, S$ B* x
let trust-value
6 ~( ?: j1 ~1 u) `* E3 slocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
" p6 x1 i6 S, c; }
if(trust-value > trade-trust-value)4 G0 ~5 e7 _  Z" i; S0 i
[set trust-ok true]
6 r' |7 Z* ^3 O) o; ^! H+ R' n; `end
3 l6 J3 P6 f4 C6 C  W, ^- g& h) r, [+ J( y. n1 J
to get-global-proportion
2 P6 A# h$ H" n$ Y7 pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ [) h/ P; A( K1 S! x' E( t( f7 S[set global-proportion 0]
6 X1 ?' F" y* ]& S6 H/ a0 B2 f8 ^[let i 0
; w, W; a' s) j$ X' j) j' D  Alet sum-money 03 |3 p% a; D- F6 u- T* _+ \
while[ i < people]7 o. {% k" h( ~" _1 [3 k3 ~
[
/ g3 g- o+ q9 @# C, ]& F. Hif( length (item i/ W5 p7 d" a* m1 M
[trade-record-all] of customer) > 3 )
5 D8 Q, s/ h# k, N5 q/ k0 u: E, _! x
[
/ ?% L; \* U/ Q6 O( y! r  v: i* `set sum-money (sum-money + item 2(item i [trade-record-all] of myself))" I  Y$ u3 w/ I* Z6 V
]: m# z/ e  x8 \0 t# d0 ?5 \( N
]( N% S( N% j* E+ h' I! X5 n- \
let j 0, C$ w) a& B0 l% S5 x4 |! {0 t
let note 05 k, l; K- p( j$ r5 q
while[ j < people]
3 }' [# e* k) {+ }- d[; h! f9 `5 U% F2 B9 _  G3 D- Z2 Z
if( length (item i
% }  ?. L! k$ }* L[trade-record-all] of customer) > 3 )

1 p$ S( a) x8 N+ W* c  ]0 E[1 n* J4 ^& y5 A
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 ^4 M, ^: K6 I6 f[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% B1 Z6 z. q6 f2 A( ?5 N[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: K5 [+ R8 S; a1 a  r* N
]
6 O* @  J2 y- F2 ]3 x]; s! X% U% G% e: ^6 p
set global-proportion note
/ F: r  X# q/ R- a( }& `1 {2 S. e]! N" t# T' l7 r# J- ?
end0 {# z  I* O# S, ~3 D0 W3 }7 i0 m: w
6 U$ U4 ?! R9 m  V8 O
to do-trade
/ ?( |. L9 L0 f& };;
这个过程实际上是给双方作出评价的过程4 A  n- H; M7 x' P4 H+ o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
7 E- C5 x( ]8 c# j& z& Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价+ o9 M8 T7 n# j. K4 V) Q7 K
set trade-record-current lput(timer) trade-record-current7 u3 V9 r5 G0 a" G% @5 M( X+ h& I
;;
评价时间: T7 u) }  |/ d5 y/ l
ask myself [
3 E; h0 h0 p3 t% n' q3 s- M9 ^update-local-reputation
4 Y% ]& E$ x. s  E" N( O. qset trade-record-current lput([local-reputation] of myself) trade-record-current1 _) r( o3 U: H$ _: W  Y: r
]6 J6 p# e$ `/ t1 W$ j( }: ?: I
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# t+ n" ^. i8 X$ N" {;;
将此次交易的记录加入到trade-record-one
# m0 c5 M. Z6 `$ \* iset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 ~; r4 X! T1 Alet note (item 2 trade-record-current )
6 v/ i% l4 L* `' }set trade-record-current
3 [. Q" O. f7 ^- I(replace-item 2 trade-record-current (item 3 trade-record-current))

  |5 b, L- @* }7 rset trade-record-current
" P; @: [. D. g- i0 o3 Y(replace-item 3 trade-record-current note)% _1 E$ ]% r5 }6 Q% Q

! ]- d- R7 N% b. B% w7 P2 I

( x4 h/ j9 K' I4 u4 t$ J& oask customer [+ z- [" W) v( G* P9 f7 r/ \' x
update-local-reputation% Z! J, t9 o0 F4 ~9 [2 j6 ?
set trade-record-current+ V# m9 r9 q) u( u
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ Z1 p4 k6 v3 \& M) |]
7 x8 V5 R4 D) b3 R. q4 {: y# \: |! D7 F/ k5 |; I2 t6 o/ J, P9 ]% `
; j# P4 ?' L% x
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! N- H& M/ ^( O$ K) h) s

6 l' ~/ O5 @6 k3 ?set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" }& a( c: `: [$ K5 |. h4 O/ `' I/ X;;
将此次交易的记录加入到customertrade-record-all
3 u) l- p/ ^$ j2 c* y# \! Nend
# j3 T0 l) c+ E. F. `# g( f, {. `  f
) ?8 n' x$ L6 o% Xto update-local-reputation
* J! ?" K& }5 e" Sset [trade-record-one-len] of myself length [trade-record-one] of myself5 ]6 B% T1 a- w, a6 I0 j' v3 U

* h& j$ a7 y) P( p; ^( {
" h( F" M/ l6 H4 g) w;;if [trade-record-one-len] of myself > 3
  p' D4 D- Y" M0 H% B1 \
update-neighbor-total7 c1 t7 l# s" K
;;
更新邻居节点的数目,在此进行+ ^! U4 z" I* I; ?5 u1 t* L
let i 3
' c+ l7 ?2 W, v$ alet sum-time 0: ]. a6 t: i  F: N* F! L
while[i < [trade-record-one-len] of myself]( h' ?/ T5 z, L3 a, I+ u
[7 Q* g3 S% s/ ~1 U. e3 V5 X) o
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 H8 y6 C1 l! n! q) Z; \$ Cset i
- w8 g3 h* f$ Z. o4 M: H( i + 1)
+ E1 p& y+ x  p# r/ w9 M
]
/ D+ }/ J4 M! U6 Z; i  Dlet j 31 [2 m+ E. b) |. w/ ^0 ~$ n- z' J
let sum-money 0
. `: r5 Z0 ]* mwhile[j < [trade-record-one-len] of myself]
/ N) y1 o/ e5 o9 I+ T2 u[
( N# H7 D; x7 _$ O4 ?' D- W; F1 {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)
# X4 {6 P' P9 f9 f4 ]; Q8 Uset j2 D2 @% e5 Y7 U& c5 h5 B
( j + 1)

  i0 f: h, v2 V" V]' W1 I' Z& Y5 _3 J1 e' V: F
let k 3" {. L/ W, D  Y# F  T" `
let power 0. q- V8 g! q1 c$ s8 e
let local 0
. R8 h- ~. K/ L2 ^! R) c3 Ywhile [k <[trade-record-one-len] of myself]
. W3 }; c6 U5 v$ f+ Y[* b, ?2 ^" H4 Z8 S: W
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) 6 N  O3 E/ Y/ E$ [: m+ @$ H& C$ e
set k (k + 1)
* s4 o- p* ]1 f( \- f; Z]: ?- T' k) h% C
set [local-reputation] of myself (local)! Q! g4 I, \( T+ ]4 k
end! Q" l1 n. ~9 b$ \  f

% Q9 ]1 x7 }# ?6 H: D2 K$ vto update-neighbor-total
8 v, ^' e5 H! _8 V9 z% `
, H3 G& e+ i% r- C" S/ U' X( q# W8 E# _if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
, S- @0 k* L& d( X! h6 T" w2 z! H7 Y0 C3 Y, K; u9 _. R8 \6 {$ ]/ |
  V" R- `6 c" A
end
/ [7 g& Y1 y% }- W1 F5 `
4 Z. [* C8 o; W. o- {& c1 f) A" Z* d' _to update-credibility-ijl
! g% @! S2 h. i! o0 u- }
+ l  m1 g& {* W;;
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。1 D! i& t: v" @, _
let l 0
0 t, T$ \  V. U" K( _while[ l < people ]1 m3 u3 C8 D5 j6 B+ ^) F# q( J
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
3 _3 y4 s: {, _" t; h[
- u5 q/ g5 Y) C8 Flet trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ {5 m+ Y/ x$ V' n' e# a& u9 L
if (trade-record-one-j-l-len > 3)
: ]$ q& f  i* O# k: F' W8 o[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* ]$ P- t$ ]& Y! M' e  w* [
let i 38 f1 m7 I+ |5 E3 h- L
let sum-time 0- X" ~. z& p% i; K3 E
while[i < trade-record-one-len]- o9 W& x; h# X0 S- f0 z
[0 w3 {( Z! N8 `8 c% `+ L
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* r# q# j4 J3 X6 @& }$ pset i
% `) {9 s5 v0 x7 z/ w9 Q4 }( i + 1)
. U  @3 p! Q% e: ]5 M) B0 S3 }
]
9 ]' N3 V. G# {+ L1 f8 `. Slet credibility-i-j-l 0; o* G( d9 b7 p4 X# U8 _
;;i
评价(jjl的评价)
8 Q: y2 R& v% f: v4 i8 o9 ?  O0 Flet j 3. R! T, o6 K5 J. x% B; C
let k 4
0 s9 a, U: v5 ]while[j < trade-record-one-len]
; C4 U9 u& n5 `7 M[" I* U$ ~& q7 [
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7 _" w5 \! X3 O0 G8 A" [4 f
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)8 B' H" J/ _) L+ S& V  }9 \  K
set j5 |$ f( D. W/ H6 o3 q  `. b
( j + 1)

. J5 }) w/ y& {* \# P3 U' ?]
+ N8 [8 X& M2 u' k8 Bset [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 ))
7 Q1 W# f8 x5 p) A
* e) A0 ]5 |6 W2 s/ F
0 s# d7 E! X" V# z7 T1 ?
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& ]( q/ S2 {; y3 ?8 w; o, M
;;
及时更新il的评价质量的评价
, M: w! v. ]3 E4 s! M. S! f9 Cset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# @# q' R8 B$ Z5 r6 c
set l (l + 1)
/ P0 ~& w: f, p# u* H]
( \5 t. B0 m  Hend
6 {$ O9 S+ C2 F. }0 Q! v
9 m4 G$ X# f! |- Vto update-credibility-list
) o9 g0 T. b* ?6 y9 plet i 0" r4 ?7 s) B; j6 k4 n# v
while[i < people]
# G' L8 H' O- M; D# E6 l[
6 Z: [. t9 b% t  ?let j 0
5 ?5 y2 w) K; p$ t8 \. p9 Dlet note 0
0 l. v: l' s/ a; }% olet k 0% C. i6 J  ~8 y" b9 `% ~
;;
计作出过评价的邻居节点的数目( g& u7 ~! E! Y% C, p0 r! N* g$ E
while[j < people]
7 Z$ ]" l1 v0 `. d  o- h[0 l. f8 t2 K$ N; S
if (item j( [credibility] of turtle (i + 1)) != -1)
- I' ], m" {0 [% G;;
判断是否给本turtle的评价质量做出过评价的节点
3 c( i2 Q' h# ?9 z; o[set note (note + item j ([credibility]of turtle (i + 1)))
+ A" J/ ?6 }9 v+ Y2 ?;;*(exp (-(people - 2)))/(people - 2))]
( a+ c$ j: T2 {1 M
set k (k + 1)
# Q% H  X" i) |2 R1 c]
. G3 L* L7 w# m" Z) ]$ s. L3 ^9 Iset j (j + 1)0 ^; W* p$ \8 R; \3 p
]
5 Z9 C. x. P8 C/ m# z6 tset note (note *(exp (- (1 / k)))/ k)
4 [/ u" m3 i8 V  j4 X5 vset credibility-list (replace-item i credibility-list note)$ e- [" t/ ^! r/ s' m0 \, k
set i (i + 1)
2 a9 ]2 r: i* Z$ \8 C]
6 Z' g  e+ t2 r: I  w( cend& D- D- F' y" ^" a+ D

* i* N, H* n0 c/ X1 |4 G+ Mto update-global-reputation-list
, Y& u0 D/ u. K5 q1 @' ylet j 0
4 x; ?& X) F( X3 W/ D+ {while[j < people]
8 _/ z4 l4 r+ @3 W[9 l8 u% W( E; E9 g! h
let new 0
: c8 m* ?0 w, H- Z;;
暂存新的一个全局声誉$ Y1 @- s, P/ j9 W# I6 o/ |2 L  g
let i 0) q. h8 i4 y- i! T# r
let sum-money 0
" y8 K  {' {5 k) I9 G  \7 Slet credibility-money 0
6 W  v1 C7 t. F7 W8 L& Xwhile [i < people], h) t: h$ i) P  `6 c
[0 V0 }6 S0 c& V8 W# X" D
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& }" z" G, s" Fset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- K: Z/ \1 R, }" R- Iset i (i + 1)8 A: y4 V3 N/ v+ |% t$ q
]! R  W' A* M! i* q! P( V/ e
let k 0
6 q2 g9 M& J- Olet new1 0
/ v) _2 E/ w; g$ D1 z) t+ Qwhile [k < people]
3 w7 E1 V& l& z& M6 r% y[
' W: x/ x1 X7 ]0 x8 t+ Hset 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)
( v; A! p: G$ |" X. D" S  Z7 _set k (k + 1)4 i- t) s- e. [, L
]
% R0 N+ Y' Y% o- o% fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 S; @6 J7 U+ v. E! ^set global-reputation-list (replace-item j global-reputation-list new)2 ]. X, U$ m4 x/ Z; }
set j (j + 1)+ s  M+ K* l# M/ e
]
# @( L) }( _4 y9 l& Eend9 \1 B5 _" l1 U# X3 K5 s# p! ^

1 B; d) M8 p8 y& `1 F+ v2 L, l: Y* ?2 F! T6 \. U

' q+ _' Q) N! ~6 `9 G1 o7 [to get-color1 I: E2 i! y6 j2 l/ j3 `- z

- \2 V% t! ?5 G* @7 w0 jset color blue
* I$ E* x) Y% B4 T5 U
end
4 m5 h) s; s, h! @: u
1 o/ o7 x" ?4 Q+ a$ E# zto poll-class8 {) f! f. N4 y8 H9 j1 s
end- r2 ^( r1 r! g0 |

$ A. I4 @# T0 Pto setup-plot1/ ?. i# G2 t  }7 q0 Q
1 T7 A2 h# R" t7 P
set-current-plot "Trends-of-Local-reputation"
  r; ]% P- o# {9 P
# i0 `! f3 o! e; E6 f
set-plot-x-range 0 xmax
; u* O+ ?& o% A) z4 n" D& o

$ a6 `4 [/ ^' S' `% _. Y: P7 H6 Bset-plot-y-range 0.0 ymax

% i# k* \5 J) Y, ^; Oend3 I* V; o# a' [) U2 ^, [! Y

9 r  V2 A* q! G  f0 O, ?to setup-plot2
5 x' W8 |$ s& W& }% B8 o9 \3 J  a7 k. _# v' x- Y# V* Q# p
set-current-plot "Trends-of-global-reputation"
% D+ O4 c% p+ u' I& c6 e/ D3 q" N
7 o$ ~1 l4 w4 ~$ r1 R
set-plot-x-range 0 xmax
) ~% |: p; y+ Y9 k4 e* |1 k

' A& f: A: f, ?& Lset-plot-y-range 0.0 ymax

! v0 V+ b2 b: v# r: X4 Aend
( m; j/ [5 I" j( f5 m, a# [, m) p. M
to setup-plot3
+ q! \/ L* F0 m  j+ D8 E) z. c2 ~/ _1 ]& g: v- O+ x3 {) h
set-current-plot "Trends-of-credibility"
% p: b9 h# q9 e: k9 P% s
# s3 a5 R9 D3 y$ \7 B) Z/ `- ]
set-plot-x-range 0 xmax
: L" A3 q$ n/ h* O; w2 P5 p7 R( L
5 u3 c2 O7 E1 C0 t8 S
set-plot-y-range 0.0 ymax
* w5 X+ s- _4 d3 |
end
$ J9 a5 _5 \/ w* e1 s, n6 K9 f" f' I( i& M' R  D; z
to do-plots3 U2 }1 q$ @9 I3 e0 M) ~
set-current-plot "Trends-of-Local-reputation"
( \- n. E/ f, T( [" h' W) M7 L; ^set-current-plot-pen "Honest service"
, `, C4 N& g0 P  H% _( R1 L1 pend
8 N1 Q3 \& ^& o0 |+ L" o
( E8 V) M& W5 U[ 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.
. ^- n3 [0 {3 N1 N, S1 M3 n- D8 H# u& O/ h: @* Y1 `' q; y, j
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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