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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:
5 _- p& A8 ]0 ?! Zto do-business ' U/ h7 W5 \3 g2 m0 x! ^7 s( a7 A
rt random 360
- @* L( \9 `# E4 m% C2 Q. w5 O% H" b fd 13 p* f+ B* }% b! f4 b
ifelse(other turtles-here != nobody)[" X5 @& i! ~! V) _' x" Y
   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.6 q9 Y8 P# i4 a
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ e+ U9 {/ P' c' o   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 r" w- d0 i7 E! l( w3 a
   set [trade-record-one-len] of self length [trade-record-one] of self& d% {+ b. G  d1 r, ]
   set trade-record-current( list (timer) (random money-upper-limit))# ~7 ^6 _( ^+ _' @' S/ ?. C

/ K$ W% C# e1 z问题的提示如下:0 M1 Y# R0 i9 u$ j: J4 p+ n# [4 P
* Q$ A# s' W6 @
error while turtle 50 running OF in procedure DO-BUSINESS' K. W/ m7 D' z' w
  called by procedure GO8 N1 u" X7 G6 V2 n
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
! N2 N6 r" a- c  E
(halted running of go)9 ?1 c, M( X/ F" W
5 t, |' d9 M0 M) u+ D
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~~- w4 u- d% Y+ R
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  K& y8 f& Y8 H+ z
globals[
! w; I8 D6 B7 n7 W5 S. U4 G5 y' j* F4 vxmax
+ T# W- |9 r8 {  N  i3 K( i1 Qymax
7 T) ]4 d" `1 n6 s: {8 D9 pglobal-reputation-list
2 k$ y+ A& Z3 T  V' j7 I# v
5 m) S- I. @" g0 l5 P;;
每一个turtle的全局声誉都存在此LIST+ ^% U, m4 g$ A4 c; y& M  C
credibility-list
' f) \6 \' P, c5 {;;
每一个turtle的评价可信度, O, R! `$ J1 h2 G. X! J6 N8 M
honest-service8 Y( C1 i8 ?1 F
unhonest-service
, Z! w) e3 ?8 j# I& u. C6 ^oscillation
, S! G5 W$ i' v) R( {rand-dynamic
% z2 j: L+ z. D5 z- y. W]7 }: e6 H! }. d8 b! J# }1 p
& q  [$ V' B3 h9 q+ A
turtles-own[
' Q% |& w5 l% Qtrade-record-all
0 d! _! P: A, Z4 C;;a list of lists,
trade-record-one组成4 g# n6 u$ N( q6 B- g7 C0 @+ r! m9 |
trade-record-one0 ~" A& T* s& G' B% F+ 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" @6 W/ i. R. Q" o
8 u! p1 _3 s* G$ C  D
;;[
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]]+ o  {6 u6 u5 k# q
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]
. R  ~" q1 z1 q- ]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list7 {  e* o- F; [5 B% W
neighbor-total4 [! A8 d% o8 u1 G
;;
记录该turtle的邻居节点的数目
8 P6 A/ V9 g3 v. A: h' ~* p+ Xtrade-time3 ?. H7 B' ^! i! I' D& B6 v3 W
;;
当前发生交易的turtle的交易时间
( O  n6 j" y. s. u8 t. q2 ?: R/ {appraise-give
& [: g3 Z3 ]8 E: C;;
当前发生交易时给出的评价3 b0 v4 I  e) y9 }) \* c% j6 c
appraise-receive/ Z0 T4 F( d  B+ s) }' N: y
;;
当前发生交易时收到的评价
7 W% q6 {- d8 ^2 s. A. r! Vappraise-time+ u$ n4 p: G6 I2 S
;;
当前发生交易时的评价时间: R! B7 f$ G  Y
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 Q0 O4 c6 G8 J; otrade-times-total
0 F7 ?) L7 k7 @! z* R9 o3 Y;;
与当前turtle的交易总次数; [  U+ y( f- T! E4 {# @
trade-money-total7 l/ k1 S0 p3 T( d0 v0 [; e5 D
;;
与当前turtle的交易总金额
5 j0 c* C8 [& o! X- llocal-reputation
9 K1 S4 A0 K& v: E  Aglobal-reputation! ^5 e6 U, r4 ~! }4 M; U
credibility
6 t' S3 X- A+ O9 ]' H;;
评价可信度,每次交易后都需要更新- N( [# u* f$ n
credibility-all
8 }1 [$ e) X- ?/ Z, }' J;;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# ^6 Q! N3 ^) S" u
* v" _: K: Q6 A
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.50 ?" V* Q) e4 m+ T) d. R2 \% l5 W
credibility-one0 E' Y" ]5 N! s+ 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
2 O0 M) @) t# {+ Wglobal-proportion
6 z% ^! J9 W  H4 j! O' Wcustomer7 T; X! j* a. J4 b% D4 G
customer-no2 w7 W$ h4 |0 C
trust-ok
$ U) }' g3 S' t+ ]' H9 }8 ntrade-record-one-len;;trade-record-one的长度3 M* P0 x3 n6 J3 p0 ]0 C: s
]* @% g% t- _. Z) q$ j& U

' X" L5 ]+ ?# P4 Z  S* _;;setup procedure: i# \, d/ g, \2 x* s
. H4 |4 h# n. l
to setup
$ s) f" I" n' `- P# l$ j" o$ v" E' g  x& V1 A
ca

. f; h* s$ H2 V7 `# j( N
7 @" }) {+ X  j0 d2 Dinitialize-settings
# j" Q! G4 d+ \. n3 k& k2 ^, t" v
" |& ^) }8 `, f8 Z
crt people [setup-turtles]
( V2 h9 |; [. H, N' a% I
/ f  Z/ r4 q& l( I
reset-timer
. U# u/ L' ]5 _  `" e6 b

9 N- Q6 F# `# Bpoll-class

" m7 H* {6 a0 ?3 `1 q/ D' b0 ?/ k3 Z9 g! l+ A" g
setup-plots
3 B7 o- R9 T# T& Y+ F7 J. E
9 u' Z- I" ^0 v% r. i, S6 B  D/ p
do-plots
7 i% Q+ _0 y- H8 k2 Y$ D- i
end
8 Z, T% I7 B2 `( ]: q( j! v# p, X+ k# E# L/ Q8 t
to initialize-settings
$ d2 c4 i6 J8 T* V9 ]9 _- l6 A4 {$ ~
set global-reputation-list []

8 b# t$ {  n/ i5 F8 T6 {
$ d; s& N4 k4 Tset credibility-list n-values people [0.5]
2 c( w9 k( T; Y; m7 t  {
( L& ~" r- C/ a7 r( F5 x
set honest-service 0

# G9 B3 x" {6 P! @( l5 q& s6 R5 {% P8 l3 h4 l+ y9 r# h
set unhonest-service 0

! o1 b/ E5 ?2 }* C$ G' U, S' c& q, G3 m7 J/ H1 |+ |: f
set oscillation 0
4 F; Y" x* S  R& h; C) y2 Z* D
2 F, Y8 `6 Y9 J7 E& |4 g' \+ ~
set rand-dynamic 0
9 ~2 j0 h+ H6 c9 }
end6 m" n, W* }0 N7 k, r
0 r1 L1 Z, X7 H6 `; p( e
to setup-turtles
' z! h+ P2 D' q  A) S7 j4 Nset shape "person"
* c3 ?4 `. o3 m6 i% f! c- z/ {setxy random-xcor random-ycor
! E1 e  t0 z3 c. {% ]: k% n" }5 hset trade-record-one []$ m2 |8 q- a+ F+ N4 ~- w  z' b% R$ X
! [; t2 m4 ~! q$ q' x# p
set trade-record-all n-values people [(list (? + 1) 0 0)]
; H, A4 y& E4 H- l

; H: S9 n/ `4 m6 }0 J) a& B4 Wset trade-record-current []0 n+ c+ {% Y) X
set credibility-receive []/ Q5 z4 I  U/ o5 c
set local-reputation 0.50 b1 L1 y$ N8 H0 @* V
set neighbor-total 04 X- n& b; I& G: K" ]5 D  t
set trade-times-total 0
/ n$ Y% F! A4 G2 M" M. Q$ ^set trade-money-total 0
# q) z# h) s& r+ V2 V4 {  R% uset customer nobody2 R8 F) k- N, ]
set credibility-all n-values people [creat-credibility]6 D9 v# C% Y* ^: d
set credibility n-values people [-1]
; z  C* C! z4 p/ zget-color
0 l) ~1 O: i1 n

1 J# ]0 p+ Z/ d% N, vend+ _" V3 @) S; q0 v5 H% {

0 i4 k& E# f1 bto-report creat-credibility
' i. C4 c/ r4 L& mreport n-values people [0.5]+ _$ P, V& w% F
end
/ `/ ]# N8 p8 r9 W7 X& ~) G
( g4 k1 }9 y+ d5 }9 ~0 Pto setup-plots+ P7 I- a; G$ e! y
) a2 ]6 C/ _: s7 }' Y# P
set xmax 30
) d+ `, p# V* E# p) B% N

2 v2 P, b+ P3 u) Bset ymax 1.0

6 Z( p: F0 e7 l  N5 I# }: \* j; l# c9 L
clear-all-plots

( _. g% D, q3 i3 D7 t# p: `& w& Z% X: L. K& j
setup-plot1

3 P8 e- X+ S' l' z: c3 J3 T
; Q, X8 J1 `: nsetup-plot2
$ u- [7 O+ B6 ]4 T& q: j! _1 s- Y6 @
. [  w; y: ^' m% W( z7 ]0 g
setup-plot3

4 z$ B; \) d5 yend
! K3 Q: U. ?* @' k1 `6 n( g2 J  u; g3 v. S+ a6 c9 _
;;run time procedures: x7 ?5 [6 C: ]& O% e

! `7 _) a. Z% I7 tto go4 }: [0 ?2 n6 V% d! a+ a; S2 ^
9 ~# c% |9 x3 N  L  T
ask turtles [do-business]
& o9 p6 _# Y, m3 L
end% z- L4 Z9 t& S* S
, k# _! ?  j2 w2 F& |# c  k) T' @
to do-business " W. Q' ~) {) z) d! x# E
) m" O' b' f% Q4 I- y

: r$ o. k: `' J- O7 Ert random 360
/ N5 u. k9 n8 M- F: K0 q

% a6 E1 ?* x6 Gfd 1
& }" }9 |& @) D0 @" e

; m7 r6 ]' n( ]) wifelse(other turtles-here != nobody)[
. k8 O9 y3 r( b5 s5 B- \; n

/ C: X& m+ `; M8 o, nset customer one-of other turtles-here
; u' V; [. X; e6 B! e2 f# R# V
* [7 F% ?6 y# m
;; set [customer] of customer myself

5 h; z) {& G0 V
: {( `9 t- @) n; T  w; h- I  Nset [trade-record-one] of self item (([who] of customer) - 1), {! U, }! Y# n
[trade-record-all]of self
; }+ B6 T" h9 \$ k/ v) q5 l- n9 t;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ a) Z5 {4 t' S1 N' p% x; K9 w

8 W$ X  J$ V4 Z+ ?: yset [trade-record-one] of customer item (([who] of self) - 1)
2 c( |+ E* A. Y! v* d9 `" s  H( F5 R+ I* I" E[trade-record-all]of customer
( b7 ]* Q! u: c8 p3 ^% v5 x( [" V7 d
% S7 S& r, b  b& [' ^
set [trade-record-one-len] of self length [trade-record-one] of self

; w6 {0 n/ D4 p3 ~: q$ R* C' T5 e# r$ e  c. A
set trade-record-current( list (timer) (random money-upper-limit))

, V& Q! a3 {# F  I3 G- @% q8 c
8 W$ z8 f& Y1 z+ ~& z; Mask self [do-trust]
3 {- O# p" [  b;;
先求ij的信任度
: u, O7 ^# d  @! Z9 {" z  H& J9 W6 X
if ([trust-ok] of self)$ s4 p' W8 Y/ j, v0 e+ _# S
;;
根据ij的信任度来决定是否与j进行交易[3 {5 e8 \+ P& q/ w0 @
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
( E: V$ }' @( E5 I$ J" \4 }/ h& w3 t2 Y
[
& }* n9 L7 k. h# r; p; q3 z

5 [. }1 L* K7 Q7 R2 P9 b: p5 Sdo-trade
3 w; x+ o  p$ h1 X: _

5 M4 V+ B' h7 v: O! J* @update-credibility-ijl

) |& X5 X$ m9 r8 q& R! o7 D4 h+ q2 l. X1 E3 V
update-credibility-list
8 M9 \3 T5 Y3 {) [, p7 y2 L( R
3 ]6 D% C7 E/ r' F% ]) t; x9 H: E8 M

6 K" T1 Y7 Q  a1 Oupdate-global-reputation-list

% X, e( {7 S  X
& |, n$ B2 Z& {+ T3 spoll-class

" z* M  _6 r2 {& e
5 C. F/ }& _! |3 ^; |3 r. P. jget-color

) k5 J1 x* z8 V' b; J: x/ `0 B& B9 j& n! M, p2 F" ]( Y' L8 ^/ |+ W
]]
) e+ L/ r" N7 x9 C, U0 h$ j: R/ q' \6 z$ x" r' T4 P! V6 W
;;
如果所得的信任度满足条件,则进行交易- y3 e  a( b6 H

" F9 T/ \) @+ v8 l8 L[
6 ^- C. P  s. v/ a; t
0 o, s. Q0 A+ G7 @+ y+ a
rt random 360

, J% l$ U% i4 ~7 p0 G; I; R: ^2 ~# O* R: @; Y
fd 1

# t% m) ^4 C3 ]$ n2 M  _) X, j& H1 g! x
]

" v: J7 E( G# p3 r( q* r0 d
1 C0 D4 q) l# jend
/ S( q6 W5 H. o9 X1 x" b
2 L# I: k5 f* I: J4 _
to do-trust
+ o# a2 O' ]' m8 v8 o1 @1 aset trust-ok False
  t; z2 g5 ~, f8 E: U: {3 u2 a( F) S" a% g: {( }- L  e& V
1 j6 h+ Q' V, \  K$ ?) U; g$ f
let max-trade-times 0
( x9 Y# m% m% z' Wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( q$ X& {9 v7 c; N. B
let max-trade-money 02 w0 `! H& O7 n' M( i( c( |& w
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- g" T2 Y- l% F
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))7 M* Q! ~" E/ p7 O  A  O
: Z+ g! U! S$ Q. L5 z% f; ^
2 x' _1 X9 q6 O8 [* i# p
get-global-proportion
: Q+ ^8 z$ Y. r& v: \6 p9 Nlet trust-value- u9 ^) G/ p0 h) l/ X
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)
  P/ R& `1 G/ u8 y0 a/ G) |
if(trust-value > trade-trust-value)
% Y: M! S8 a" _0 W7 S; H[set trust-ok true]: W  I! b; W" G4 t8 D" N, v
end  ?) k. s, h1 _

3 M" u2 {' m9 {' Z9 \' kto get-global-proportion
3 B5 S+ S  u, P) yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 E* Y2 \) ?* s
[set global-proportion 0]
9 \8 N! @/ X% s" p  ^[let i 0* p# D: Q* J  y/ r  I0 Q
let sum-money 0
6 M1 b+ z& {0 p; I8 [while[ i < people]' |0 `; P+ G; j" r' Y; }- P
[
' {3 m/ N) I* T0 q+ \' [+ m- Fif( length (item i
2 d8 m! }) n+ S4 S[trade-record-all] of customer) > 3 )
* Y* h" F2 u: ~. P  z2 [) N; J
[
7 t2 S' t6 B) X' @* oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 ^! ?1 i7 A5 ^, E]
- n. V( m6 A# A: L, v0 q! `* Y]" D. B; k' @: Y
let j 0
/ d% f* v" H! F% Z: K8 D7 ?. M, q2 Glet note 0( k, Q% v$ H' I
while[ j < people]8 z, `+ V) Y5 V" s8 ]
[
, [4 A, }+ d* C: Gif( length (item i: f5 R2 P8 A2 |. `
[trade-record-all] of customer) > 3 )
9 Y- Z# s- A; ]
[5 `! k6 n% w' Q5 g/ Y# g5 C  q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)) a  [7 Y( b) G6 Y
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 b) \" h; m5 A
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 R! @; \# \! m. {) Y+ t]- ^9 R0 V- f; y0 V
]" A5 z/ n. y: d+ K' `0 |
set global-proportion note
; F3 g* i* `- x0 R]
" k6 y. [1 p4 e( O0 ?! K: x: iend
* r; g. Y* N, O( ~% D- M6 {) r
, X. S! f  P' z5 a# L. Nto do-trade
1 P- z% H! y! O5 f. m7 z;;
这个过程实际上是给双方作出评价的过程) P8 z4 M& A& P4 S
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ `4 m+ i, V% o2 a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价! l* X& ?  _4 p6 [
set trade-record-current lput(timer) trade-record-current6 W" F+ d# n6 g6 n: r; H- {
;;
评价时间
" M0 g, g% C) w, m+ y# Dask myself [2 ?4 P+ D" n- J& N* f5 a4 E7 V+ M
update-local-reputation5 C$ b4 H. z' u% z+ G
set trade-record-current lput([local-reputation] of myself) trade-record-current0 F5 E$ Z5 B5 [2 X- A, b
]  U9 Z. H/ o( T  s0 Z. ~% _( d* Q" Z
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 d& i9 t* P- k6 y5 R3 w: i;;
将此次交易的记录加入到trade-record-one
- v( [5 |- H6 @; xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 i' f$ y! X4 g2 R: C! Rlet note (item 2 trade-record-current )
; ~5 i, \: a9 [2 `/ mset trade-record-current
/ f8 g2 T  g3 h) q2 z(replace-item 2 trade-record-current (item 3 trade-record-current))

8 F( l% `4 H; Q, O# D' |0 eset trade-record-current
5 g# n; [5 T! Q- a: n) V# Y(replace-item 3 trade-record-current note)( c1 b" B0 ]/ b2 h4 S# E
) \, N, v- Z/ Y4 v5 o4 Q: l

& {9 U% Z; K7 Z9 N# l3 {ask customer [
& {  N: D- c( [4 z" F9 Kupdate-local-reputation
9 l( w9 T9 H; e/ Sset trade-record-current! ]) b0 L* m5 r4 K" c
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& O/ s; K' R: [6 u1 @# L9 o
]
) I* b9 V2 X) w0 r  y) ]
2 j9 t% B/ C/ J8 N0 W! L4 z* _
4 Q. }0 O6 l( R
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 i4 O( k. H1 Q( a  t4 I) b# V
4 D- e; n# t* O0 k3 F
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' X) {/ l9 b* j! u* e% r
;;
将此次交易的记录加入到customertrade-record-all$ @8 ?' M! m3 l: _
end9 Y8 f0 j! ]. b& C! @

7 n; |" T3 a1 L/ c8 M+ G  ito update-local-reputation
4 \7 `9 S2 g5 O8 O6 u/ d" lset [trade-record-one-len] of myself length [trade-record-one] of myself
/ f- H+ s: n/ H5 v
. N0 I: [, W1 |8 U' t$ g! Q
7 y- e- Z  q! S;;if [trade-record-one-len] of myself > 3

: o8 O4 R, M* z' v/ _! yupdate-neighbor-total
/ h# \8 a8 F) j9 M9 B;;
更新邻居节点的数目,在此进行
" c+ m6 |# p: X# u9 R; llet i 3
6 @8 ]9 i0 R9 ]8 p, |6 L6 dlet sum-time 0
) K/ h4 r0 `" z" j) @while[i < [trade-record-one-len] of myself]) f# d" v0 E% n/ p' T; @. q+ v
[
: {7 a$ E5 C# I! t2 W# e! fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& V+ o5 {3 ~- k5 y( C6 g8 |5 Q
set i4 j1 S& I! V: a) g* M+ C
( i + 1)

5 k+ O; q- a6 n% a3 s]5 \  R2 Q! D( D
let j 3
6 t5 J8 ]  [. f9 f! A2 jlet sum-money 0, V/ i" x: u3 P1 w& U: Q1 @
while[j < [trade-record-one-len] of myself]
- p8 I' W# p2 `* T/ v: m[2 T. K* s, @/ Z; U6 n; Z* f, d
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)3 R) D( x. z& G  ~' ~
set j
2 Q% B9 w) @0 J* w( j + 1)

  m, n4 T) m) L: S+ ~1 s3 d* j]1 I9 v; n3 j5 _# L% G1 @
let k 35 }8 N/ ], r( b& J1 z
let power 0- d+ `$ z% Y% O0 o5 \2 B' g- l" A
let local 0) k4 Q3 U3 X+ u/ w5 E8 r9 I! S; c  B
while [k <[trade-record-one-len] of myself]) D% D  q% x3 Q; {! a* y$ e
[0 S6 M: o  M# m& u: F4 k: `" q
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) ! Q& Z3 u6 W4 W6 L. r/ e; l
set k (k + 1)- m) W" t9 g  @! E8 _
]
* v1 p' ^! X8 d3 ?set [local-reputation] of myself (local)5 t, V' |* x3 R0 }
end
, \$ N  L/ O0 N+ g: |0 X
" X3 ]% V8 h: V* C" N, _$ k8 lto update-neighbor-total
* f% q5 e, w2 m( y; p+ q. r6 {% P) E3 W# s* x0 T. p# T
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 D3 r- j' [6 P3 m( M# {1 N2 o' U

, Z' Q: D+ r4 G
' Z' T% f8 U1 _1 `
end
% d0 l* r8 b2 J* T( @( b- k  X2 x3 I: ?. Y9 O$ _, w
to update-credibility-ijl 4 R) y& h; ?" l$ C: R! f

9 ^. X0 n: C: L# ~;;
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。
6 L* C/ Z( N' o7 Ylet l 0
. w& V( n. q7 w* L9 W4 fwhile[ l < people ]
  w8 z, m, O: f* \: w% w;;
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
0 l! g1 {* r* M  h$ X, E( _[3 _& S% N' t- M0 q- s0 A6 y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)  P, j# @6 k/ k9 J- o2 a  H' w, Q
if (trade-record-one-j-l-len > 3)* c- R, W, ~! d+ e9 S2 k6 }
[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
+ s! M* P4 r9 ^, S0 H2 l; Dlet i 3
0 S5 C, p7 |& l  blet sum-time 0, t! O1 B6 r9 D: ?
while[i < trade-record-one-len]
7 J5 R* R8 z# w[
1 H* G: C3 S( Pset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), X: R+ j- \: }
set i
( D" P. N% l4 G" G( G6 n- q. J( i + 1)

( z" [8 d/ ]+ |6 `6 j( x]
0 H+ b! R0 F3 W* i( ylet credibility-i-j-l 0; P9 j) S: E) N7 Y, `
;;i
评价(jjl的评价)
( F  f; }5 I4 v- E2 e) P! B' @let j 3
. N8 H/ U  D6 c, _: Tlet k 4
# s. z5 H9 d8 B+ k. V7 Pwhile[j < trade-record-one-len]
  S& `! |; d! v# N/ z[
( v+ T, R, d4 p/ e1 e  d8 C. pwhile [((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
' q2 Y# `8 w9 a! o. h4 iset 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)
. v3 g3 t7 i5 H! f( b8 L9 Gset j7 E! D& ]- S1 N
( j + 1)

2 X  E7 C, e3 E+ v]. t3 X) r1 G; E* z1 s* P  X$ V3 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 ))
: b( y1 M, d" i$ E/ H
& K& J" T: ^2 }

9 i9 p0 ]- _- o/ @% L; Z: [let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 {5 n/ \# o7 A7 b
;;
及时更新il的评价质量的评价
: F5 Z% T/ I2 U: H0 C; Gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* F5 c3 s. t8 w+ j
set l (l + 1)4 ?7 {1 O; S  E( R7 O, z: O6 g, m
]( z# o: {# f; e: G& U
end$ I5 ?! G. h4 t; ~: @8 V' N
$ y- B( u% [* G
to update-credibility-list5 s1 @7 ?8 `% s7 @
let i 0
9 t# e" W( F9 R' W, }0 p" Awhile[i < people]
: [/ ], M5 T! T' @: r# R( _# v[
1 t: n9 l9 l" L4 O$ klet j 0
* w, I8 C  N. `2 D  Dlet note 0
/ c  e: y8 a6 l! ?" h* E$ l) xlet k 0
3 s" X% e. h% x. J0 \7 p3 e;;
计作出过评价的邻居节点的数目
4 M- G  [; s- `+ i, r" zwhile[j < people]" j4 ]2 r1 f& M
[
4 Y  d) `$ l$ W! R9 c- X0 aif (item j( [credibility] of turtle (i + 1)) != -1)
% D& h/ ~( A/ H' {; t" ?7 J8 S;;
判断是否给本turtle的评价质量做出过评价的节点3 B/ }- ~6 Y& G% d& C& R7 M3 y% O8 e4 d
[set note (note + item j ([credibility]of turtle (i + 1)))
8 I% x+ ~: E- \( ]; \;;*(exp (-(people - 2)))/(people - 2))]
9 q" k( j- B. s! |* W
set k (k + 1), [/ B( |; J/ n) y9 W
]. l1 M8 F" G$ k
set j (j + 1)
: T6 D! e" B4 n5 F8 x]
" b7 [5 H6 y$ u, I- W9 N- S1 [set note (note *(exp (- (1 / k)))/ k)  B, j9 L, E, s% A& ~! S3 e; m
set credibility-list (replace-item i credibility-list note)
" H+ `. q6 [& U! iset i (i + 1)* H+ x. u8 O) J' N1 D
]
0 n" `* ^3 g, j" K. B6 L- H, p; x/ eend
9 h2 n( q: x6 E/ j, {1 ^
1 ^  w3 _( W, S3 I1 ^- m5 Kto update-global-reputation-list5 G7 D/ Q) \$ x# x; n
let j 0
" f" P* z; ]1 [& E9 q5 `while[j < people]
7 e- i; g$ H2 k$ w; m, s, _: V  o[4 C$ P3 U1 A# Y* I. C
let new 0
1 D" z! b  S1 H) n;;
暂存新的一个全局声誉3 J/ {* x: r7 _$ C& \* ]* _; Q
let i 0
; s7 m# y7 H& ]4 `# klet sum-money 0! U- Y. S7 I. a) A* F7 A+ }, I
let credibility-money 0
9 q. [5 T# ~  B5 M* {$ |6 ewhile [i < people]6 |. F/ U% P( E# h3 S0 {2 q5 i: i
[
! T2 b& m! i, X. lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 z" |  [9 f0 P4 W: sset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( ?1 a  W, r* g0 n
set i (i + 1)% L) K& ?  k. A0 y: }/ g2 T
]
7 o# r  J2 ^5 R" d! y4 ilet k 0/ _( r" r' l# Z/ k5 [
let new1 0% y9 M: U5 r7 j: X: p
while [k < people]
) g# l; C; g" q6 S5 Q[
3 {1 p- Y/ y! |. @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)
" a' l% n% g3 h  Y; rset k (k + 1)4 ~3 J- k8 l0 O
]
7 T, V' X$ F; ]set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 x* m8 F, B/ N) y& s" Bset global-reputation-list (replace-item j global-reputation-list new)0 M+ S" Z; J4 Z" j, a% f6 P
set j (j + 1)! o* l8 O" H& n+ @7 i6 {) R
]
) j/ _0 B' e1 H$ l; Qend, |% Q5 ~: \1 K( o$ A1 F' P

2 C- C4 e7 L2 @6 _, n% k9 O; J2 ~2 A5 |" k6 a, r4 V& L6 ^

" n& R1 U' W) h+ l( [7 i$ ?; ]to get-color
; Q% z7 R" g6 B& i+ Y5 ?/ }
. H  u  U7 k' v, d( uset color blue
! z3 E7 h. ?- e, y% a0 t4 J/ e
end1 J7 r2 T6 X6 ~% z% s: @

, g! Q: X8 t$ H& ]3 H. M1 W$ Z# Zto poll-class, v: e3 J! A+ P& e4 h, ^
end$ |, F+ U3 x% q( i6 t, O/ L

2 @' Z4 q% q: j: oto setup-plot1
! a. V9 x- n/ o
2 t# }3 U- Y4 n/ Q; t3 |set-current-plot "Trends-of-Local-reputation"
$ P& U) [# G$ h' F" K0 ^+ A

2 s7 L- d" s6 s0 ^6 }/ e( \6 xset-plot-x-range 0 xmax
7 E2 _5 m" s* p+ W

- W& l0 ]+ D- o: U1 V- Dset-plot-y-range 0.0 ymax

9 x' ]( r; p3 Yend
' P1 ?, ^& m$ V8 Y) r; Q
& H/ I. P0 O0 g! m! `) e- Eto setup-plot2
' R6 e7 ?0 h+ k8 e# C  h8 i2 p
* E& `6 q9 V. S( L( T. z) Gset-current-plot "Trends-of-global-reputation"
+ p! B3 A1 M2 L; t
  K6 \0 a$ z" x
set-plot-x-range 0 xmax
5 P) J3 e* a1 Y# p4 O1 V
  s2 Z/ A& K2 n  w2 B7 C5 K: J; h
set-plot-y-range 0.0 ymax
6 E4 D/ C: b$ h3 T7 e4 ~5 K
end6 U9 F! z3 k6 M) I% e
3 `6 }- q! }4 Q  k# ]8 R2 _* h
to setup-plot3  ]' e" H9 S2 @5 P

3 U, \' \5 _* Q9 F1 G& ~set-current-plot "Trends-of-credibility"

9 G' c& O, E: x8 `! H- }6 a0 [
" Y1 J* ?5 f8 z; w% V: ]set-plot-x-range 0 xmax

! b/ O# o; E' `8 c0 W
. g% g: e- L  k! x) `1 M3 F4 kset-plot-y-range 0.0 ymax

- t( O& U  \- ]; ?. w7 Y8 nend3 A+ j8 C9 z. t2 D1 x6 M

  _3 h" x) w9 l  s9 ito do-plots) r/ e6 B7 P% l- k
set-current-plot "Trends-of-Local-reputation"
( c, U+ P  R4 i! kset-current-plot-pen "Honest service"
* H) f# v* i  o6 N% iend
. w# _% o+ _9 Q- H5 y
: U/ @7 f  z9 s6 G+ \[ 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./ ~  K2 z1 {+ k2 N4 Q
. x0 [; ~/ V8 e6 Q; V
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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