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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:' y; @6 ]9 `2 z9 h3 g0 N' D
to do-business
5 }, v2 R0 X; T& D6 [, h rt random 360( J6 x$ u( e3 A! K0 T
fd 1% R7 {) Q8 f8 Q5 o$ c
ifelse(other turtles-here != nobody)[
8 K* x5 T* z, x# {, T   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.# D5 d+ K/ \2 Q6 C9 z4 a6 I0 f
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; x( T$ K/ k3 T; z
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
/ ?# g2 n9 R7 V, Z! I' Q. p   set [trade-record-one-len] of self length [trade-record-one] of self% p) m& r- J! E/ n6 w+ j" h# o
   set trade-record-current( list (timer) (random money-upper-limit))
- A  W6 V7 {- T. g+ ]; `$ H' }$ p/ |' d2 M
问题的提示如下:
* x, }4 |- [+ h; y8 x
1 T8 ]- V) a; J) Werror while turtle 50 running OF in procedure DO-BUSINESS, w  |! q4 {( T$ T  k# D1 e
  called by procedure GO
( |3 Y" W# y& \, M/ ^OF expected input to be a turtle agentset or turtle but got NOBODY instead.
. g4 b; j* O: G1 p/ ^
(halted running of go)7 Z" J3 z, s7 H* g& `5 z8 W5 Y
, Q  Q/ Y/ V" W$ M, A
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~~' N/ o2 R6 U+ c% [
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; r6 ~! h6 s( [2 s# o5 h  S3 S5 s. b: I
globals[
! G1 ]0 z6 q4 T& V% ]6 c. uxmax
! P) x2 {! Z0 W  T- F2 ?2 Bymax
8 S" ^7 E3 _0 a7 [8 i! w1 s& g- Fglobal-reputation-list+ b  K; o2 _' T, o
: T. ]( H; b4 n- X1 F5 h, t
;;
每一个turtle的全局声誉都存在此LIST5 Z5 j# M2 }3 O( w+ W4 b* l/ _" w
credibility-list  B0 k4 i  S- f1 |5 R* ]: {
;;
每一个turtle的评价可信度- e+ Q  C0 i. R3 w3 B
honest-service" k4 V6 X" H" u- Y: f6 S+ V
unhonest-service
+ d& q! @. F; T& Z1 T% x0 G+ f# Roscillation
7 g" S; v# l, yrand-dynamic4 z+ d! ]7 V, m1 V4 G8 A. ~
]
* y/ x& t1 [0 r8 z) ^, H$ W8 w
* a! W' [- ?9 S5 }! s! k9 M- Zturtles-own[
, @% q; m% F5 `' z# T4 X6 ptrade-record-all- L* h" r, A6 q3 @5 J( z
;;a list of lists,
trade-record-one组成& y" ]& ?9 ?! k) ~5 T+ x
trade-record-one7 o1 Z  F6 I1 ~9 v" O6 W
;;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 J* p- R0 W& p0 I9 z8 l
# s- l' O7 j6 A
;;[
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]]
& @. K3 e, C) j, W1 `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]* V( M8 g& O7 p9 B, _) q/ B
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
( @: D& ~+ ?/ q, q0 [0 G' ?neighbor-total
$ B1 x! ]* b9 A+ w4 s8 z2 };;
记录该turtle的邻居节点的数目+ \/ V  t" c' G/ m, i4 n
trade-time
$ T/ E! Z2 c$ J! w. J3 S2 |' q0 V;;
当前发生交易的turtle的交易时间
5 i+ S$ r" G. _, |8 I) n6 g8 Mappraise-give& E- R; z2 f" s+ k$ c( D' d
;;
当前发生交易时给出的评价; ~; S2 X# N1 Y* N9 ]
appraise-receive$ [; d7 n/ w- y& a
;;
当前发生交易时收到的评价
& h) x5 b, ~1 `4 N2 L; Dappraise-time
+ k" a6 S- R2 u6 o- n4 o;;
当前发生交易时的评价时间# a/ x( e4 t9 \+ U& v4 J
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 D4 A; Z# F! @0 K) Rtrade-times-total
' E4 B4 ?1 _7 ?# ^% r;;
与当前turtle的交易总次数
2 h  j$ O9 P; v' Z. S$ ctrade-money-total9 E; ^' C6 U- b
;;
与当前turtle的交易总金额/ N( [2 N9 W+ v+ f
local-reputation2 C; j. H/ V; M+ O; K( u+ G
global-reputation
4 \* p- ?2 \9 r1 y2 T0 |- Gcredibility# V  k& p" Z4 ~" S* n' `# D
;;
评价可信度,每次交易后都需要更新, j% U2 H6 A5 z2 Q: N
credibility-all& M" f! L' J* m- F" v7 K
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据/ a( S) }2 H6 d) l+ f3 c6 T

3 ?: M. W2 S: }+ v1 e$ L& n' g;;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
. ]4 c3 R$ j+ l! ?* X# d% rcredibility-one/ C' E" T; I8 v: i
;;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
. E$ B& I  r+ U* b* r9 A, Eglobal-proportion
3 ^2 |" ]$ p: Q3 d0 c) p3 tcustomer; L" w# D6 x: a( r
customer-no
" F" k( D7 R4 m! K1 t  a& Btrust-ok
+ @* O" P# I, n% a) Q! ztrade-record-one-len;;trade-record-one的长度
/ B) [) l6 ~, h( p" a]
, T5 G: q% F: ~6 {9 x' g5 c8 i( z8 E6 O7 s- [6 g* l
;;setup procedure
$ L  {9 @% @' V0 N+ h5 @8 ]+ E  d  O/ I
to setup5 y: Q% Q5 V& _4 s# Y2 Q/ |
1 r, H' _9 ?8 _" j0 E' r2 x2 G+ F! Q
ca

# W/ n4 M! S3 W2 v, [0 Y8 s1 K; [% T% w" T# A. z5 ?
initialize-settings
8 G% i9 c: v% G# L

  ~0 S, V# P) j2 w0 |crt people [setup-turtles]

3 K7 H+ c' J/ y9 E; I, j, n5 U
: `1 @2 c$ y# q# a+ U9 Creset-timer

; B; \8 ?1 N( P# n6 U7 ^) {" b/ A/ Y0 Q7 W; {  i' _
poll-class
5 V! q7 u. P, c# r! @7 m2 h4 Y
1 }/ i& c0 F, R  L3 L/ j5 y3 W6 r
setup-plots

* x5 e3 A2 Y: U+ J* g. ], o1 S, f4 c2 p- n- @8 H; J% x  B# L
do-plots

6 ?7 l  t0 J8 g- ?+ Qend
5 I$ L$ R1 E1 c6 I1 V( s. F% u, m; p
6 H& s$ N& L/ d* i. e! I% zto initialize-settings
  r" {+ _* N9 w! o% C+ j) a6 I0 S
( a5 Z+ I4 t8 A9 O1 iset global-reputation-list []

$ Z0 f  m- {8 g' ?& _
, o& E/ {! n( iset credibility-list n-values people [0.5]
" D/ S6 p$ B  x7 L6 R
; S. L# c. C1 C
set honest-service 0

8 v* B- m# e9 t
$ T% Z9 k* V9 x& vset unhonest-service 0
0 R6 O1 u8 R8 n
) N: k7 k4 F+ K  x& K- }/ v
set oscillation 0

; F; H# n' D) e1 |' ^  j, c9 }6 t2 K' r; t  @- V
set rand-dynamic 0

+ G- ~8 \: K7 P* F: W/ yend
! B6 d+ h# p/ U1 q+ m: ]; ]/ H% m% a/ y- C* ?/ {4 Q: P/ z/ Q
to setup-turtles ( d7 r" n! H5 L! x. Z# e7 A4 w, p
set shape "person"+ E# O- a" u  Q; P+ V0 L
setxy random-xcor random-ycor
( c; J2 H# B1 ?set trade-record-one []
0 S3 _+ u# {: Z1 K3 J2 R3 Q
. X' {9 q" r9 S7 I
set trade-record-all n-values people [(list (? + 1) 0 0)] ; ?7 ~3 ~' n) _- I+ {

! q; d( X8 r6 L0 G7 T, sset trade-record-current []
- D6 |6 m1 |; W. ^+ Z, y; cset credibility-receive []
. U2 h; ^  ]% m# B5 i5 E* ~2 kset local-reputation 0.5+ B# q4 r& t" G
set neighbor-total 0* }, }* u. ?* |5 g/ k
set trade-times-total 0
* J6 z* j# l  E, Lset trade-money-total 0. D  Z8 Z8 d! X, |3 O2 \4 h' y
set customer nobody
, J8 Z- L5 A$ i$ ~set credibility-all n-values people [creat-credibility]6 ^' W  I4 |; K7 k- V
set credibility n-values people [-1]
4 t2 `9 U( H) p6 Fget-color% j3 S) x2 q& _- @7 L3 N

5 |( F5 l  }: e1 \+ @, Q/ ]9 {end
  q  A& X! W& ~, r  y
! V8 @* L; v7 x  \" j* c3 ]to-report creat-credibility; M7 G0 p& a9 o8 ?' S$ h0 t
report n-values people [0.5]
1 }) W  O  a; A$ f& Tend# m, P5 E+ o5 j0 T

/ w$ \$ g0 w. |to setup-plots. E/ x! X' o3 z3 x  J

* V8 u' r5 l. O% \  ^7 vset xmax 30
. g- o* D, |; h& N& H
9 D  M2 b! g( j/ r- V( N  e6 ~
set ymax 1.0
3 u  `3 s/ `0 V/ A8 _) J
# u/ t! Z0 ~3 Z9 a+ V& m2 K2 S$ S4 n0 h
clear-all-plots
$ ?" q8 T4 F. [. U
4 ~, v" V9 }: i) v" ~. Y! o
setup-plot1
$ r% K* o+ I0 Q8 ?8 g

5 V. Q) H; C3 g. r2 w' {& c2 msetup-plot2
! y- r% P$ W# f( j) d
# u' @. [6 a" r  D: O% {7 C7 k
setup-plot3

" P: a6 `9 @$ a' |8 i: `9 q' Wend
; t+ ^5 Y/ Q! y, ]2 q. f% Y2 }9 R2 k( E$ F7 V! N
;;run time procedures
, h/ h* ^/ _* ?6 b' n; @
2 z! t4 o! _' m0 @. R% I; o3 jto go+ p3 }& m4 o- Q- a$ {' ]: d) R# f( \

; \; O  m/ M* J2 d5 y7 b; `! I: zask turtles [do-business]
+ Y! p+ F! R- R+ {
end6 }( `+ L# m$ M- ^' T- z; g/ S

2 h- w9 F2 U4 x% y! [, n% b: Q  gto do-business
8 r! l7 C2 `2 t, J
1 V% y1 a0 \5 Y7 Y

) q, t/ B+ \) w, |; J0 _rt random 360

0 }5 B; ?. X- D" J. |; s0 [8 m
- |! Z  D; M; d% S" O  Bfd 1

2 t/ T' }3 P9 q  N2 |7 G& a8 k) B
ifelse(other turtles-here != nobody)[
3 m/ X- I0 w+ n7 q: ~
6 _+ {( n% R6 T; [' y) x& j
set customer one-of other turtles-here
' W3 u# P% K1 F  U6 C6 N
, J0 A% I2 C7 a' J
;; set [customer] of customer myself

3 l$ F% f1 z  T( q' y* N
1 `4 r+ O1 @; iset [trade-record-one] of self item (([who] of customer) - 1)
9 R+ @: Y6 W0 a* W/ g& ][trade-record-all]of self
! E5 I) z& a7 z* K0 Z# x  y;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 I/ [9 y. U+ l( A4 d

2 C* o# M* J. N7 R- w- C! s9 T# Hset [trade-record-one] of customer item (([who] of self) - 1)
% k; }) B( I6 ]: a' t[trade-record-all]of customer
% R7 r  X; N/ m
) s- h+ K2 j  T6 C) g
set [trade-record-one-len] of self length [trade-record-one] of self

9 S: K+ C- k( g" \  t3 j4 w) E1 M6 O  S0 h- P6 D. ~
set trade-record-current( list (timer) (random money-upper-limit))
' I2 `# b, W- B8 `# q: |, a

7 g  `% S$ f# @ask self [do-trust]" o0 V! [% K% G: ^$ S
;;
先求ij的信任度
# r" y+ P8 n+ u: ]4 [( ?/ ?( [/ u+ a( F% |
if ([trust-ok] of self)( Q% N2 V8 c+ }0 m
;;
根据ij的信任度来决定是否与j进行交易[
* H8 Z2 x& D7 {& A! K& ~* L" Task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ D$ W# T5 P, G" T
3 C* L7 i, E  a  |
[
4 w/ @  Z' S+ q3 ^" ^5 k

. a+ k. l) ^8 j5 l5 w' qdo-trade
, L5 g& p, |7 r2 C

) [0 `% G- G: [8 d9 y2 cupdate-credibility-ijl

" c( v0 r2 T- Q. P/ }2 u" _: ~4 J3 K: q$ z& X, A
update-credibility-list. m4 W0 B6 @9 d1 x2 x* m! u$ B
) |1 K) ]$ P$ y) O) [
# C" w9 \6 J; P% k; w
update-global-reputation-list

! V" _9 z) w, J  F: n7 b( m! N
& d8 m9 S. U% M: Cpoll-class

) A) x+ q% h" b$ }. O* A
3 @$ r6 i- k- ~% }4 Eget-color

# _! R6 W1 {- @4 G- {( M0 i$ Q0 o1 M/ O" o1 X' k% `6 w
]]! R, ^) w2 L( @) L6 k+ v& h

# q* N  P( F7 M* _$ r;;
如果所得的信任度满足条件,则进行交易' o% \9 A; M8 P6 |4 B: c, L& m: u

1 h0 P, J0 P) t6 p' \* [[
6 q$ Y) {0 n. S

+ ^5 j# S- {& p# prt random 360

! t' ~4 F8 b9 O( ]# H3 B0 s+ S
0 B+ r8 P9 o7 |' ^2 A5 Gfd 1

4 t# u, }( ]! A  d7 ?6 e: {! S
4 q! R* h' F  i! a; }]
5 G0 O1 `* _: f

8 `% B, K/ g# gend

' i# \2 c0 T0 L" ~- j. N) n7 O9 v$ E2 i/ q8 u- u- H
to do-trust
% ?" |) @+ j. H  dset trust-ok False
2 x- I5 |; \) S2 G6 t, D5 y
$ b( I, l& p9 j7 B: z' E

# [0 v9 ~) \. F( s" S: }+ z  ilet max-trade-times 0, H- E1 `& `( j$ ]. b& q. l
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. \2 }. C3 c: ]  q
let max-trade-money 0
3 f, b& ~* v' _# Eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
& U: T. h; M; F  nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ a: ?3 P4 _* X" s$ c3 {9 |
# c! ^2 d1 W# X' A

5 x7 ~* w0 Q; c! ?+ `get-global-proportion
0 j; K0 c! ]4 A8 G. _2 G( k8 tlet trust-value) u% f3 _; D5 H
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)

2 \& K6 k  {7 L  U' i1 W& @, Fif(trust-value > trade-trust-value)- w1 f1 c6 Q- L( R4 f7 w$ B4 U
[set trust-ok true]
1 s6 E( [$ B$ f) ]end
% O% M7 E5 [! j+ [  b& M, ]9 q3 o: S+ |" r6 A" h0 e& G
to get-global-proportion$ l% i+ N1 r, {2 T6 Z9 u7 [2 t
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% h9 \9 ~2 G5 k- O/ n[set global-proportion 0]6 B/ F/ b. i/ m- L, k
[let i 0- [8 A) Z' l: p! [
let sum-money 0
( C% g9 K2 _6 {* twhile[ i < people]. d$ ^3 V) \* ?: J* \. Z
[9 j/ h7 A' u/ Y3 O1 }( O; d$ j8 w
if( length (item i' J4 n' T  ]/ J9 U% B: N' Q5 Q( p1 Q
[trade-record-all] of customer) > 3 )
! c* M/ J8 z3 o6 ^% t) ^
[) }6 E6 W* `! @) F# t% P  c
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 i- n& [% t0 d3 R8 o' E/ z]& B$ f' }' V3 c! O
]
. n' [7 A" ]5 F3 h& mlet j 0- \3 q* K" F/ S
let note 0
- |; N# _4 o7 |1 d$ dwhile[ j < people]  K$ |; p. ^, _' ]% L2 j
[+ `8 L6 _0 P- o" Z0 J
if( length (item i8 Q& y% N* C6 `$ D8 i, ?
[trade-record-all] of customer) > 3 )

) Z/ f3 H( y: Z[( b) o  [. M3 @( s0 B$ L8 P; D
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& F2 U# ~/ d1 L; X0 P[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 Y3 ]' M$ z7 p4 Q. H1 y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& Z5 }$ N, K" b4 T- v0 n
]0 T9 _( {- e+ Q  g' e0 G3 d
]
, `* k) g1 O4 X  J! \! c2 _+ Xset global-proportion note
% k4 S7 v8 w: S. g, g9 |; i( ^# k" ~]: x) ^$ S( C5 }4 E3 ]* {. U1 {
end/ l' d( z* l9 R% [3 Z" V7 T+ }  `& k

% b" c3 x( S6 X- Bto do-trade
! y  z5 o0 V8 u$ h1 o7 F;;
这个过程实际上是给双方作出评价的过程  Q8 t/ E. m+ H/ q$ J/ C
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价# E. {' X5 ~+ l: A1 Z- {) X
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 d. j7 h6 u, q6 Kset trade-record-current lput(timer) trade-record-current
3 H& Q: b# x) R' O6 h# a;;
评价时间( v! n; F' A% t. F
ask myself [
7 J) o* F' v; v  B# Q' R: Aupdate-local-reputation7 |8 w2 F2 d3 b' l+ p; T9 i* t. f7 E
set trade-record-current lput([local-reputation] of myself) trade-record-current
& A1 R  T* P: ~! N]
# J. H; O: c! e2 q1 Y- r* C9 s7 sset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" U; Z! Z6 f/ c) D- I;;
将此次交易的记录加入到trade-record-one" W1 u" o" P. R, }% ~
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
- `$ ]$ ]: W0 Q/ b' r7 `+ Olet note (item 2 trade-record-current )
, B! |9 Z; G9 v: B7 ?, [, {set trade-record-current( O0 _2 k! C. t/ z
(replace-item 2 trade-record-current (item 3 trade-record-current))
4 Q3 n0 a) G$ t7 X" o1 n% U
set trade-record-current" _3 B0 B/ t9 Z4 M# C4 {
(replace-item 3 trade-record-current note)
& I, m% q( s0 A  w8 O9 ?8 L
# k/ R$ Q) y+ K1 S# a

8 _: [( f+ K1 N1 \* T. ?4 [( D. Oask customer [
, N' M9 F$ |' v6 Z8 supdate-local-reputation
- a% I5 w0 N2 wset trade-record-current
, E4 T% ~" L3 k* p(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 P; q$ U/ g- E9 N- \2 K
]- e6 e6 L4 j, q# [% j
% C  Z5 z4 Q! A" W1 s) H2 k8 [
$ r+ H, p/ T+ i6 d( n1 k" I6 w
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% e. w7 V' `' ~; P0 b5 K

, K9 F- |& [/ q/ c( [set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))4 T# i' `0 M! h1 ~
;;
将此次交易的记录加入到customertrade-record-all1 Z( @! E. l" B5 V
end& L2 O* K2 U6 i$ T7 B3 p
8 v7 L$ Q) K3 E, I( j% g0 R. p
to update-local-reputation3 b( `! I2 M. v6 I
set [trade-record-one-len] of myself length [trade-record-one] of myself5 B0 R9 s6 H; T! c7 i

' F; z, J+ t/ v. M/ B1 E8 r8 f. T8 x& b$ Z; n
;;if [trade-record-one-len] of myself > 3
& v/ ^: |9 M7 ]6 K5 ?" l; I
update-neighbor-total' h# r9 r( L  J- W5 F
;;
更新邻居节点的数目,在此进行' Q0 i$ Z) X2 G! a2 H
let i 3
. _7 B% K3 [' Q* }3 X! `let sum-time 0
5 v% n% l* _: e/ b& c4 ~while[i < [trade-record-one-len] of myself]
; E3 K- p# J1 _' n& ]% t8 i[
, y! c% g% V3 w" N  b* }7 Fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( N( N: w( m- m* }" r
set i1 [: X6 F2 p! L6 W# C% J
( i + 1)

' D! H. P( s8 ~! c]
' h9 ^. G* I: ]1 h( Z, |" ^' M* Hlet j 39 ]- R3 z" @7 W- U
let sum-money 0
1 q' j7 ~* I( Q* \- @; D$ y+ N: nwhile[j < [trade-record-one-len] of myself]
1 D( B5 N3 M4 P2 D[8 U4 L+ N# c' k3 U1 Z
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)
$ n& I# n" R" J' h5 S* u) k- rset j" M; b, U8 [9 f3 f
( j + 1)

" K% W8 @/ ^: L5 a5 s]7 {0 ^) [' j# y, A+ N# T) ~* y
let k 3$ g% ~% X4 @" [4 m/ E
let power 07 P* g: n  L' H: z
let local 07 f% p" H& z+ p: U
while [k <[trade-record-one-len] of myself]
' T3 ]: M- W$ H7 F& J7 ]6 d6 q[
+ t' V1 N% V4 \, a# n. \+ J$ E, Gset 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+ R+ ]$ ^  x# H
set k (k + 1)6 }& c) O, t6 `( ?7 X
]
+ m& U* j; X+ j9 fset [local-reputation] of myself (local)% Q7 j$ o# \- h( h  D
end: T# q' ^% A! i6 W
; L. W  J, m4 B: T1 v
to update-neighbor-total8 G3 _# _4 i7 J! A3 Z5 T% u

" ]! O: A/ }* Rif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# [, Q( t4 V8 k  l7 A8 |5 H( d: d
# ^! C" [! A0 m5 L# f' V8 _" ^
0 [5 j' M6 \2 v! ^* c
end. ?' j" H- H( {+ p

4 [' ]2 G  }  r0 X6 Hto update-credibility-ijl ' }  \* N' s6 |" n
" q+ w2 g6 K+ W) W. C+ c+ U+ O
;;
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。/ {2 f  N3 x7 y7 s4 ?" ^; m- Q
let l 0
9 }% W/ l9 x, @* f( G# E1 e# \9 cwhile[ l < people ]+ a" g+ @; W( o  z  ~0 T' u
;;
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/ V" M, O* Z. v! J' y5 d* {. @
[1 |( ?. |) o, h4 o5 J& X2 E6 f/ E7 n
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 w& g1 U% G: z& @& T" a/ ^if (trade-record-one-j-l-len > 3)- M$ v8 Y! C/ `- c& d
[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-one7 n3 a( G; J/ S; d- L
let i 3
+ u/ |/ ], R% plet sum-time 00 v/ w  k& _& t) K( U- b
while[i < trade-record-one-len]7 m% k( }( x% {+ y6 P
[$ K% b2 u9 m7 _6 }
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
. `! G$ F$ S  l! E: J$ xset i# y1 R4 j+ n, b
( i + 1)

8 Q/ H( T& @7 C6 B1 Y]
# c, e4 R/ M; C/ a3 `  qlet credibility-i-j-l 06 F: K/ ~! c. c
;;i
评价(jjl的评价): X4 E- ]4 ?5 E; B
let j 3& C. b$ S/ p% m. P. m' ~
let k 4& K: d/ o7 ?* O3 O+ p4 z8 j
while[j < trade-record-one-len]
' S: p6 E/ y5 p' l[3 ?# \& a$ s" B% e0 n; d7 h, m
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: ~: X6 V2 Y* h9 E/ C- f3 ]8 j
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)
* K  A' p6 g$ K" ~! y% Tset j8 K5 i1 f! N; ^! [% G5 R  l1 x
( j + 1)

" k0 z* I4 d8 @. L]
4 h  ]* D) G8 G: cset [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 ))
/ Z6 f- ]0 u  Z1 ?* Q& \
7 s8 g' ]  P) U, c2 K
% J, J* W) f! u. U  _
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. ~! t3 G  h4 m;;
及时更新il的评价质量的评价
3 S3 H; w2 q7 D' P  _set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 a  n! r. ^) h
set l (l + 1)
0 a! S; Q& j6 _- h]
  A& h5 O! A  ?0 w3 J/ cend
+ W' Q9 H& m+ N- b5 V: ?8 U# S/ C* N
to update-credibility-list' f( F) u" o& h
let i 00 E% ?* [* @, u" B
while[i < people]! O6 E5 C9 J- v
[
! \4 r* K1 |# m* \8 I* qlet j 0
& b- t# A8 v6 d3 Clet note 0; Z, O- W% e9 a  N, Z! Q
let k 0
. y4 W3 S8 c# m' w, P  S2 X: _;;
计作出过评价的邻居节点的数目6 G- z9 A$ u" E1 q8 y0 _1 T9 `
while[j < people]. V( R0 H0 O4 o6 R
[/ D, [4 }; ?* f8 j) ]1 U( b8 X
if (item j( [credibility] of turtle (i + 1)) != -1)! s) [: b8 A8 w) b6 X
;;
判断是否给本turtle的评价质量做出过评价的节点
4 \$ v/ C( t' X, B8 @# ?, T[set note (note + item j ([credibility]of turtle (i + 1)))
. B) @; w2 V( e- ^6 G;;*(exp (-(people - 2)))/(people - 2))]
9 J3 r  e) L0 A) z7 y3 P5 h
set k (k + 1)
$ S3 d$ B; ]; q5 J6 x9 E]
- _+ k7 z* x0 m6 F2 _& |0 wset j (j + 1)
1 f6 @. U) a/ c+ n, S7 m  x]5 l" y. J" l8 W+ [& l/ V8 n! K
set note (note *(exp (- (1 / k)))/ k)
* K1 T  _! D  i1 K8 g% i$ q) `5 S' [+ Jset credibility-list (replace-item i credibility-list note)# v6 S9 a8 i, R& d! }+ z( b
set i (i + 1)
2 l# i" _0 c) ^5 u2 d  E5 R$ g" U]
* O' e+ I; [) E, ]+ X: c4 xend0 g  A# z! ]: n. d( U

  R# T( T# K; k" {7 J6 I5 ^to update-global-reputation-list; B% S, n- w+ _+ U2 S! b
let j 0
' r( w0 p% Q* Iwhile[j < people]
+ @6 n2 N3 I( P) L6 G/ j[
# @- A  n0 P" ^+ @5 G# ~/ Blet new 0% r) }0 |! D2 H: X( W; s
;;
暂存新的一个全局声誉( q: Q) A" f) s
let i 0
" Q& L( ^% I% Wlet sum-money 0
: ~2 q; B- W1 @let credibility-money 04 l0 l/ x. _( z& P% |
while [i < people]. i7 ?& |( Z# l& _8 I
[
/ h; m, q6 G4 }- F5 U. cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! d8 |6 I) Q" yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)); P$ s( s3 ?7 _% o& v3 a+ j* I
set i (i + 1)
; f5 v2 b. J% n! D* f5 R3 {- N]
( i0 I' ?/ u: K7 t4 R, z- ^let k 0
  |9 j7 m8 d  p/ K3 \5 N5 ?+ ilet new1 04 L" M$ f/ p6 P7 `  L9 ^& {
while [k < people]9 g# X% X( K8 @" _: d$ d& L1 w
[' a' u' a+ X2 x# m* c6 h) |
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)6 G0 {% d5 j' z6 I2 G. R1 s4 L8 T
set k (k + 1)  a' ~3 [/ |1 z: F0 a. q2 V; I
]9 _, I4 ]! ^" X6 d
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
( ]6 d  K( S, h! F3 lset global-reputation-list (replace-item j global-reputation-list new)
$ @9 }/ O$ A1 M; }2 Y0 |set j (j + 1)
! D: R7 q9 R- D0 \# S8 c1 q/ S6 c4 j]8 O% |7 D9 w' ^) p! g+ ]
end
: _% e' L3 b- J7 t+ t
, S" b0 `8 S, {2 M4 w& R
8 T+ K+ F$ q7 k* z/ F
+ u' H& z4 U( |7 s6 A& a# rto get-color$ K! K) _. f8 E- S

# L) {( k4 }, Sset color blue
& b7 M. y: f$ I9 t& t
end
- C3 @4 N/ l, x- \4 S
# z. M% Y% {3 J8 F  s8 Mto poll-class
, t) w  w: n& j, z7 I7 {# Lend
$ A; d' [! s8 v$ S# R* |  M$ A# Z6 q/ t
to setup-plot1
; G* ]3 F$ d/ _- L4 q! q) X1 n) v/ u: Z" H- J7 r& S
set-current-plot "Trends-of-Local-reputation"
" d9 m( }) x8 F6 \) i

2 x; |) X; B4 j/ X+ Dset-plot-x-range 0 xmax

3 c* j5 j; d* V) D
# |3 x0 Z: i: N! G: I8 oset-plot-y-range 0.0 ymax

5 l; q2 m" y: J! n. o) n$ ]end1 H" \( e: {9 [0 V3 [7 m
7 s! Z( ?. s" l3 d
to setup-plot2; X  n0 R5 F- e0 v# n7 g7 s

7 G1 n$ V. i: A) f: g5 Q7 ]) bset-current-plot "Trends-of-global-reputation"

5 G1 ~3 G; e& e# ^+ X
% t7 n  |, a9 o: Q1 Z, qset-plot-x-range 0 xmax
' A- P# A2 n1 H3 I* C$ A/ S

, j4 H; d: I; ?set-plot-y-range 0.0 ymax

, H1 q2 n" V3 _' I3 fend
& h5 v; i4 y0 n9 t/ s, q
1 e0 B( Y  Y  X1 Hto setup-plot3# T0 n; S& j" E+ G0 [! L

9 h. X4 q+ g* M+ [; Aset-current-plot "Trends-of-credibility"
' ?6 J: s4 o. V5 A
5 B9 w5 h5 Z4 o$ J) [
set-plot-x-range 0 xmax

3 N0 t) T$ ?. }) I5 I' Z- @' Q
  I1 ]( M, w8 F: v: f& I, f4 Mset-plot-y-range 0.0 ymax
( v3 B9 `" ^6 s
end" R" }5 A1 d- V9 E& ~1 q& e
7 h, c) d2 u; R  O
to do-plots2 \( e7 ^0 M, W9 @
set-current-plot "Trends-of-Local-reputation"  v% ]  |# D2 ?6 y3 N, k
set-current-plot-pen "Honest service"1 z9 p" D) f9 s' d
end% _7 [. L: n0 j' I- S8 B3 e

' {$ D, [- ^* _/ U  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.+ N) h& ]$ Z0 K0 k

: Z- I, y' g( ^! r5 A1 |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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