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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:
% V& l% C. v$ kto do-business
. E1 y9 y+ M+ J2 q3 }9 [% T8 f rt random 360
" @9 M; l9 J; H8 _% c, D' q" G fd 1
$ G: M- y/ h' X3 a+ T; r: M ifelse(other turtles-here != nobody)[  ]( P0 A: `3 C+ ]- R' _7 w
   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.# `$ T5 ]9 d9 A
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ {) p& I. ^, m. N   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: T0 }& I$ z8 Z/ p
   set [trade-record-one-len] of self length [trade-record-one] of self
5 x1 d3 I& J9 I$ U7 r# ~9 n   set trade-record-current( list (timer) (random money-upper-limit))0 A& e+ D" j- v6 z( M. h, Q8 W3 W

+ t% L1 x& w" ]: v0 K8 a' t, K问题的提示如下:+ c. q( F0 M+ Y  ^: g0 G
4 S9 M- X8 {5 C9 [, L2 T5 F
error while turtle 50 running OF in procedure DO-BUSINESS
! c: X0 B! Y) v$ ~1 i9 F$ j" g' p  called by procedure GO  {. V8 I2 P+ N' R& D
OF expected input to be a turtle agentset or turtle but got NOBODY instead., R* b' ?7 x. x+ b
(halted running of go)
' s3 ^5 p* O2 z6 Y: N# X( _' s& u$ z& L" \6 [& ^7 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~~
# N7 Z' S! E- Q1 T, F; 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
5 i* `  J4 E: M) ]; k& t- Uglobals[: D; V" P6 ?/ Q$ {1 J: a4 A; p, Z  B& N
xmax- P* l7 @! N& g6 Z5 [
ymax
; o% {' q. _8 E: A4 Z( c, Rglobal-reputation-list
2 F. H3 X- s, E+ V
/ [, E6 G/ f1 g;;
每一个turtle的全局声誉都存在此LIST
: O: U1 m" P" i' D% Pcredibility-list
% ^4 d: V# B6 Y# C4 ^0 Q( p;;
每一个turtle的评价可信度
" H8 c! R( h, t4 ?3 T: i; Ghonest-service1 t! p* a$ G+ I# [
unhonest-service- F  W) h5 D: z! P1 k
oscillation
3 m1 R* B' |9 w! b/ L# {' y, C$ @" C0 J4 V1 _rand-dynamic, ?, r& O# y8 Z( l) ^0 n+ N! H
]  ~7 C* k- F, v

5 Z  ?7 w% [5 d% |3 I& Xturtles-own[& X; r% g9 {6 v
trade-record-all
9 R$ ~1 }8 ~) w2 V8 u) f;;a list of lists,
trade-record-one组成
, Y+ W7 P) D$ u! C" S7 C( [trade-record-one5 X3 {; @7 M0 J4 R1 ^' g
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- A  J' t0 A# a% f3 [

9 \& R. u9 w6 k* X$ i- d8 R;;[
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]]2 e* X9 f: b' B9 ?5 M
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]
& B$ c2 ?" N2 i3 e% [( Y* ucredibility-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
2 j1 G7 r+ W6 Nneighbor-total3 H  t: d6 Y3 N6 P
;;
记录该turtle的邻居节点的数目% E# @" `1 G, b9 J' O
trade-time. x& K6 g7 G$ Y( F% V
;;
当前发生交易的turtle的交易时间  s/ n- i3 z+ b+ h- S* T( A+ E) r
appraise-give% V0 D: S& W# c: [5 Q' G
;;
当前发生交易时给出的评价
; I3 r8 h8 l: v! ^7 I4 }9 Lappraise-receive
) D3 Y- ]% d8 ]9 n  [;;
当前发生交易时收到的评价& |  l9 t' K3 ?0 L
appraise-time( V5 t0 |- {. P* J$ {
;;
当前发生交易时的评价时间1 [# f# p5 Z# a, k
local-reputation-now;;此次交易后相对于对方turtle的局部声誉. X& L' F1 d- @$ z
trade-times-total
" I' {* D- a$ T: O! K* p" R5 w0 e5 \;;
与当前turtle的交易总次数# C: Z. ~+ d- \+ A+ }
trade-money-total: a9 ?1 t' C" d* k* T. U: y
;;
与当前turtle的交易总金额/ t4 T+ D. v1 ]- E+ U+ o6 c( l. l
local-reputation
* Z/ I4 }% W9 I/ Cglobal-reputation
1 c8 `8 P- y$ @credibility6 r2 b# z$ R5 j  P( W' p+ Z
;;
评价可信度,每次交易后都需要更新" |# L  ~% ^8 G5 C4 F
credibility-all' y6 Y/ S, R3 B! m: `0 F2 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
+ w: z0 P6 r$ n/ M4 F) P6 L
8 d+ _; ]. c" f7 H/ Y7 Z. Q9 X;;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
: g6 Z/ f) h2 v' \% R, tcredibility-one
% w5 e  m! `+ I( ?! w;;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$ J( T1 d% H* s/ J' q+ T7 D& {
global-proportion0 g5 c9 n) ~/ h) ?6 E
customer( c8 W& M/ a  Q( O$ b+ e& C
customer-no" o& x  E5 v4 j; M- g
trust-ok5 N- T- ], I; ~, E8 i
trade-record-one-len;;trade-record-one的长度
8 G$ B  ?& q* S9 i]
- o- x1 H9 Y2 a: b' L4 b9 o/ ]$ I% ?5 U) Y
;;setup procedure5 k" w" ]% G( P) }

$ n, }- G6 K, y( Sto setup# H5 X* w$ m, N, B7 `# ~
* p$ r5 f8 s) X, ^$ V' q
ca
) x9 ~; l2 L  Q! o' @
) f. m* u2 u4 E  S
initialize-settings

# A# C3 ^& S. |2 @; s* A) o2 F! f+ [% t" s$ e3 ^: v
crt people [setup-turtles]
9 D0 s! S. Y2 [8 @1 U1 e/ f

8 _% y) }" c9 ]$ D+ B% Ireset-timer

7 ]" k9 U5 C4 ~% I1 n6 Z. t7 _5 f/ Y% F
poll-class
, i- t/ E) n+ H) E. g- f

' F2 f1 L6 F; t  c+ Osetup-plots

# {+ L1 G! \, V
, r  X9 y: `* ^/ a6 ~1 c! X1 Bdo-plots
: Z7 D! N4 Y; @  N
end, f* J0 @" ?1 q  q! s' }7 \8 s

9 n5 R! T% t, u1 mto initialize-settings# C) B5 t2 N. v, b, ?2 M9 N

3 S6 t. G: y5 J, Dset global-reputation-list []

3 S; V, ^9 i% J+ g3 j
$ o/ H# _; _3 A1 P; E! w0 `set credibility-list n-values people [0.5]

" _: D  U5 Q  u& {) F2 O- |
( v7 y% V6 ]( P5 b" U* h. |5 |set honest-service 0

  U+ w' l% n3 ~- N2 I" ^
, @7 F6 V/ o- h% M5 t2 ^set unhonest-service 0
+ h5 j9 q, Z2 r$ }4 r+ o
8 q2 q: W1 o, e  b, u( E
set oscillation 0

/ J+ c' ^5 P* h5 C1 T1 B6 @0 N( n9 _0 l% o6 n1 q. w' q0 a  Q
set rand-dynamic 0
8 ?: b1 l& b) f( i
end! x: t% Q# J0 F' \

. D" r: l( j! q$ h0 M8 n+ z! Tto setup-turtles + i+ Y; O. M0 Z
set shape "person"* T. _8 |# k" x
setxy random-xcor random-ycor; T, n; h1 P  l# w5 T
set trade-record-one []0 N8 O; Z# d, |: {6 V; N
: _) _4 R  L6 j$ P" R: Y: V
set trade-record-all n-values people [(list (? + 1) 0 0)] ; }5 S+ N9 K8 R% |9 L! P9 O- S
5 Z. ?8 P3 x7 ?
set trade-record-current []5 X3 T4 V) E/ h+ t' o7 w
set credibility-receive []
, S% B" t% {; o$ q- y, C7 \set local-reputation 0.5  s5 b  i, X2 `! n; C
set neighbor-total 0
6 M' h, A6 H' g0 ]set trade-times-total 06 C$ F+ d$ k8 J. i5 T+ g: w
set trade-money-total 0$ e, r: G; D! C* }! l7 W
set customer nobody3 [5 H' ~0 U0 f& Y7 h
set credibility-all n-values people [creat-credibility]4 s0 w- R7 K# }# h" M6 [
set credibility n-values people [-1]3 s  l) S* z/ A  W' L8 l+ t
get-color
" Y. F  n2 U- D3 y

* f! v$ ?, x) T4 s, U% B$ M6 T' T# xend% c- v$ G* C: ?! H' D
3 x, D1 t% H, ]! W& o5 u
to-report creat-credibility
4 X: U# @5 w9 Breport n-values people [0.5]. b; [9 z  x5 n4 q: q' Q/ U# ~
end
) |5 t6 D! ?; f9 S+ W1 M. h
9 d6 w' F; X5 ]8 j$ Fto setup-plots
* l9 j" f" J, {9 ?- h0 w0 _* q& t; l- s1 n
set xmax 30

6 g9 P! ~1 m5 s% }( e% S0 A
. k. g- a3 C8 O1 i/ C2 Q7 Bset ymax 1.0
* f4 q& y9 D7 t- o% T. ^
$ L! u1 ~: }& X* g
clear-all-plots
) q5 u9 M; p; Z7 N6 V
# M" C  r) k1 z  V5 R
setup-plot1
! _1 g) ~. J5 ~! _0 q
9 l  Q* l& R5 {$ O& g4 j; [( v# I
setup-plot2
% l. ^0 X9 X) ^9 Q' H/ F  J! {

% A: U; j% P1 L% Qsetup-plot3
2 r6 J0 j: i# A: B3 V
end
+ E- ~/ r! G7 I9 X+ y2 h/ v' e) _  d% s$ J
;;run time procedures
' \3 ?% h. m& H. z. S) k- t( u7 {1 A. I" ]; h  ^0 s# m" y
to go- [8 E( Q! q7 m' Q7 _

$ {# c0 r6 W8 gask turtles [do-business]
3 m1 M, Z! U- N4 Z" s9 B
end$ I2 U4 t" }* Y# R' h9 H, a/ ^

6 H9 A: R/ Q; K( R! _0 t; N/ Rto do-business 0 S: P5 b, ?/ I4 u5 j

$ |+ J$ V2 a% g& g! J) l. w5 j4 [" O' q
rt random 360

3 H! t; C( k' F7 y+ V
% p  F. ^1 K7 t3 Rfd 1
" ^; e( z8 ~- N: O6 {6 {7 t
1 O5 U' `7 Y- A- a* E
ifelse(other turtles-here != nobody)[
( |) M2 O9 _- @
& Y* V  d$ N/ |, Y7 Z
set customer one-of other turtles-here

- r  H/ v3 T  \( P1 b5 Y
' w  _+ _9 Y, C+ r0 a7 k) O( |' a;; set [customer] of customer myself

+ {  y4 ~! o% D8 b$ F% H2 n' ^2 J- e" s9 U- i
set [trade-record-one] of self item (([who] of customer) - 1)
. P, s% _8 y2 S' C[trade-record-all]of self
8 B2 `. d+ X( u8 ];;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
( q. @2 Y2 S0 z
* D: O& Y* z7 a
set [trade-record-one] of customer item (([who] of self) - 1), k8 k* X3 F5 x' f5 U% ^5 G
[trade-record-all]of customer
/ g7 z7 f" n* Q+ |1 b
; W, ]! J; B) C5 y3 h( W3 ]
set [trade-record-one-len] of self length [trade-record-one] of self
" x& J1 }4 d9 ?) Y" |0 }

$ s9 d8 @6 H/ l* w+ Hset trade-record-current( list (timer) (random money-upper-limit))

* m  B. V9 }) O! {* c" G! A
0 m8 D. w/ m/ b/ I$ @ask self [do-trust]
% L! i1 m% F3 Q( J& E, F;;
先求ij的信任度$ V+ s! V1 a& C
, L- Q+ k  B2 @8 y: i$ d- u
if ([trust-ok] of self). |# G( s9 T8 l
;;
根据ij的信任度来决定是否与j进行交易[$ A$ K* J1 G0 n+ v2 @7 X
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) }7 `# z2 Z8 Y) b  R
* k4 Q5 W1 y! n+ \
[
; O# |% K" t  h3 o0 A+ w
; w/ |: G: V' X/ G% q0 ?0 C
do-trade

! [( S$ n* a# f- t
2 V) G* l; D: L6 |2 \1 F/ ~update-credibility-ijl
5 M1 T. F# G8 y( I

+ D% J" q/ `- \1 Z$ E( \update-credibility-list
: v( A6 w0 j9 [/ @7 [& I% F+ ^
0 C* e* Z, P' |2 B+ ~2 G
$ }2 E8 {/ J9 d2 ~0 x
update-global-reputation-list

5 k- b$ y7 @$ J, a
; R2 r  u. y6 M8 fpoll-class
, w# B9 d2 l- {" U6 n, @# Y' K
9 k+ H" m# t! _, t: D/ @" H$ W
get-color

3 k& Y+ r+ }( m9 n" \. J/ S6 f% P' w( z) |
]]1 }) }2 q: ^. g" H4 i/ {

: C. N. j2 M( u2 G! Y* W- c;;
如果所得的信任度满足条件,则进行交易; N4 r0 N% B5 Z/ R  b0 W2 C

/ s$ u2 j$ M5 z6 T* R2 I[
4 h; `  t9 n, }7 B
, d9 }' m8 g' G+ H
rt random 360

% V- g" [! u* x8 D: w
$ L; S$ D; F& H% |4 G4 Gfd 1

3 f' C; ^5 B! K) v5 {( \8 u* w' U- g
]
! X* P5 j- X3 k4 M1 ~! V9 |
( D1 n; w) I( W# D( q" `
end
6 |0 R1 l2 s' L# g. T0 C, o, }# C8 M

( c; P" y5 c3 x; lto do-trust
: Q8 Z  w* A7 S# Mset trust-ok False& S* e4 }$ l- z, H

# W7 @1 ^" q# _+ F; o4 D
1 q: y7 b0 e# Z) X0 X! {+ t
let max-trade-times 0
+ p! L% C5 D* Wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ |  j+ [( P3 m8 n3 X0 a4 ?let max-trade-money 0
/ E6 L, O8 |/ t( D5 uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
$ Z3 Y$ F5 Q9 P) R# \7 k- x. b8 blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- D& }7 H2 ~1 b, n3 L; F& K, e& n0 V: N/ E& d
4 p9 x# U" r1 B: c  _6 G
get-global-proportion$ d, o% z1 L. @, n9 ?! a# N
let trust-value" F9 X7 K; |$ j! _& u( ]: O
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)
1 z" S1 A. \" b& e( e6 E/ d
if(trust-value > trade-trust-value)0 a9 N( ?: ?" Z( K- I0 O9 r. ^
[set trust-ok true]; w* L/ m( }: Z5 W
end% N0 Y+ L/ Q, H+ z

& ?8 k! c" v% |# E! F9 [: A; S4 _to get-global-proportion
1 j- _2 C4 r/ f# b, \' zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 s6 O' W% ?* @
[set global-proportion 0]6 b* H+ N, b5 Q- {  ~
[let i 07 Y8 Y7 a/ u* s! n
let sum-money 0% v* ]6 |! s2 ^$ ]. s5 |  {" h. ], ?
while[ i < people]% \* O5 H4 q- c5 \7 F& |
[1 l8 [1 a0 Z- ]- @4 M$ h( |3 M7 r
if( length (item i
' ~& L) O5 g8 g1 J[trade-record-all] of customer) > 3 )

) T5 Z& b+ ~$ D7 X[' F3 \! k* \( O2 `4 U
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 B) j2 D0 l4 w) M$ N( S. l]2 G9 K9 {( C" I9 z
]# f( W9 x, D9 [  Y  s
let j 0$ D! l' L5 k  I$ `1 ?9 p7 y8 z
let note 0+ N  V' r$ u  Q. J. X0 G6 {
while[ j < people]. Q- @' q2 }3 q. N* H
[( A) I" X8 W5 s
if( length (item i
0 W* l  n- `9 H/ v! x" E/ [[trade-record-all] of customer) > 3 )
2 m% X: ~9 ?1 x8 V7 i- P
[$ `2 s, x& ]5 j( j8 V9 e
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)5 _, k$ \+ M* j# {) w
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) c1 }( V+ L5 K% q# e[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]0 H7 y/ U4 r8 h3 I0 b
]
! I: L9 a6 U1 f0 _]+ k" v9 Z& s# S; v# c  ~
set global-proportion note- T: L' e+ B+ M+ m* f
]
7 Q' x! ]6 m6 ?9 Kend
! y( T/ e' }2 T( h1 F* A& u; J3 B/ t" Y- b+ I
to do-trade
6 d# ]! K5 r) f3 h9 }, j: D" C;;
这个过程实际上是给双方作出评价的过程- X! Q1 q$ Y3 J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ c+ X. H9 ?/ `9 q: E9 oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* j9 l, |8 j  ~( L4 P
set trade-record-current lput(timer) trade-record-current  ~9 Y0 x8 c" c
;;
评价时间
: o$ |3 e7 q4 ]3 _3 \ask myself [
  P# Y) i5 c% Y' Tupdate-local-reputation
6 C: b$ b6 i* ~/ z* C) Lset trade-record-current lput([local-reputation] of myself) trade-record-current$ r; O0 J# o  c) E9 h* b6 }
]1 g2 c/ e: v5 X8 R" H
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- C) e4 P: M( n  j* c6 d;;
将此次交易的记录加入到trade-record-one' M) N& Q) g6 C" m
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 b, G9 s' O: y  c0 P/ Ulet note (item 2 trade-record-current )
0 ^# T% y" r; X7 W: k1 m8 l; Eset trade-record-current
1 F9 m8 v! ]( Z(replace-item 2 trade-record-current (item 3 trade-record-current))
) A% W0 `/ j- l; B! a5 W# H2 i2 A& X
set trade-record-current+ |1 n+ d( u# ]
(replace-item 3 trade-record-current note)
) \1 T% M3 u+ A- M: D& w
1 Q3 k2 b- N( T4 O: {  H/ M

0 O& T6 c$ `, i4 s: yask customer [
( R/ O, F, I( W: u! Z$ ^2 s9 [( Supdate-local-reputation
2 v' g$ g+ R! _6 _set trade-record-current% M7 a9 d3 ~3 \% ]4 |
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 G" B7 }: z2 L]& n4 m: n* N& q' Q

% L. I2 |$ S+ r# y  J

# m. j$ `# ^2 e1 U  aset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! ~9 V4 O  n  ]  {0 h+ X3 F- b7 F1 A

6 ^, G( `8 X% Z# @set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& G. m- Y$ g& f9 K. H  H3 I4 E;;
将此次交易的记录加入到customertrade-record-all
; n# v" J) k/ y# @end
! N  D" `$ k" I, Q+ ^# i$ b9 O5 H/ p# P% e
to update-local-reputation, c' w/ P; w7 K9 z
set [trade-record-one-len] of myself length [trade-record-one] of myself
$ z$ l! Y$ ]- Z9 ^* u! S$ z/ f8 [* p: \3 _8 \* l

: h# q, P( n" K5 Y7 X;;if [trade-record-one-len] of myself > 3

$ W/ Z9 S- T  Hupdate-neighbor-total
" d! v5 h% }- e- |; e4 A/ E* x9 N6 ?& ];;
更新邻居节点的数目,在此进行
1 b7 |1 `) X' Q. Xlet i 38 i7 F' x; C  S  o) F; ?5 P
let sum-time 0
# l7 R( u- c# y3 p1 R7 c- N+ {$ z  W9 m7 owhile[i < [trade-record-one-len] of myself]: e" ^, c7 {: C: L% P
[
* g, H1 R1 W' k# cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* j' B) S3 [+ e- T' d2 R6 v  h
set i
5 X( L7 V  ?8 F/ U, J( i + 1)
1 l+ \% c) r& c* m7 F
]- N1 m4 K* V2 j5 g) k) t
let j 3. T: ^& q& x- E. N- P
let sum-money 0; n/ A7 k7 n  X0 @( h
while[j < [trade-record-one-len] of myself]( a7 V, U. u6 c5 l: B8 m
[
# {0 q0 X: b* I5 sset 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; E5 Z. S* U2 z, [, Y/ Aset j( v+ F9 i1 m5 F: ?. n# |. I
( j + 1)
' O" e- ]. {1 [
]9 a" ?* f+ ~$ r4 f9 Z
let k 3/ a* p6 v0 X2 z+ t
let power 0
& T# Q; M  B6 m2 x2 ~5 Ylet local 0
0 A* J* x9 e$ I! ~. cwhile [k <[trade-record-one-len] of myself]: h; @. `* x. Z7 v' M
[
  L0 w! ^3 V/ H2 B. y+ B) V) X5 Eset 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) " c6 Y& c1 f1 H5 h
set k (k + 1)
( {6 c" K2 T* \* g2 o+ U- v]
+ P5 M1 @- H7 l1 Z# sset [local-reputation] of myself (local). S- |6 z' N9 @3 D! i& p
end
9 G! O- b; B$ G; C+ f5 G: v% z. N1 U* X2 u9 ]  C
to update-neighbor-total+ t  G8 M, I+ g3 z# r
1 F% ~5 E1 b& I' s; B0 F- E5 w
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( ^; |% W5 g7 R2 {/ G, B  @
& B: ?0 P$ H9 @7 F

9 P. X. }/ ^( L  O7 Z- [end8 L) b; x) T" o5 }' C
. v% v' ~1 {8 b& h
to update-credibility-ijl 0 C* }+ |, A2 G7 X( q$ k
7 l4 {, y% r* r' u6 G! ?
;;
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。# Y$ [+ X* s5 A- c% R% N
let l 0
% H6 [3 N8 n% Qwhile[ l < people ]/ i9 y. d  m, J! 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3 F$ Z% |( ]1 k6 n2 u' |! `; e- I" [$ K
[
" d" A7 ?( Q6 p# I; wlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
; [+ ]& x+ L$ J4 l) Hif (trade-record-one-j-l-len > 3): T0 a5 R1 |$ t6 K' p/ N8 J& r
[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
- H( h5 X+ X1 W, F2 Flet i 3
. o  O8 x4 \6 l/ x: ulet sum-time 01 M9 f8 u9 B: J2 L9 e
while[i < trade-record-one-len]
+ m# _! u$ h- t9 o( P[
2 _1 \' S; _4 i$ C( Gset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ). D- b% n5 h4 E' X) G! }2 g
set i
4 z9 U/ ~) W+ R) N; x0 u( i + 1)
2 b$ B$ i& N0 n: o% u9 y7 n: S# L9 Q
]
) n# n/ U2 j" p) a6 `; o9 T( plet credibility-i-j-l 0! Z- {) {" y; L. A5 E0 u/ s% N
;;i
评价(jjl的评价)* u6 Z% C! B" I. A+ }1 n
let j 3# d& Z/ F5 ^; N. ~# k
let k 4
! f  R8 u0 s3 r( [& Ywhile[j < trade-record-one-len]
) C- q: \4 k1 L' X7 ^[* \8 w% p+ e9 x& W0 H2 P" ^
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% @1 c6 H* S8 |: ?( Q( M
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)
3 t  u4 r% f0 Z7 R2 Oset j
9 C' g; o" `' h, S- t! z( j + 1)

9 t% y* P& @- V$ ?* M7 D& G3 @]
% p, Z0 X2 G3 f9 qset [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 e. K/ ~& X9 h" h8 e' e7 u* k7 `

+ D8 ]7 I& Q8 C% E9 J' s- ~3 blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; [8 s$ U+ z% ]) J;;
及时更新il的评价质量的评价6 Q4 N7 C+ @9 m; K$ R; i' ]
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! Q7 k$ U, q. ]' _0 e8 j8 Q
set l (l + 1)
8 h; ~5 z* y. g]
! H/ @. h) B; m) v/ p1 cend
  [, V2 d8 @, p$ S* ?  f6 O
! r: H" F2 k; L1 Y( j5 V- xto update-credibility-list
' _. T  s2 H% N0 y: d  v" e! j: S: blet i 0
6 [6 g+ ^' ~) `7 [+ @while[i < people]. I- h& L  F+ _
[4 }- |6 e) n3 p
let j 0
% ]' M$ p) r3 ~: Y; A/ nlet note 0# U* S- M( X, k  W# F
let k 0
; x: }, g) d& z, o;;
计作出过评价的邻居节点的数目
2 v: i, U, `# P- d, vwhile[j < people]2 l- b1 O! a0 v4 F$ |
[' `+ \/ l% `: \; j1 V3 [7 X3 Z. W
if (item j( [credibility] of turtle (i + 1)) != -1)
4 h) d4 g# e6 o' e* t3 r4 w;;
判断是否给本turtle的评价质量做出过评价的节点; j* k5 S; \9 [$ f
[set note (note + item j ([credibility]of turtle (i + 1)))
3 V8 R# k3 O) l;;*(exp (-(people - 2)))/(people - 2))]
* m. q  O' {9 h# e* m" `. K
set k (k + 1)
) ^, y; _' o4 g; ], Y8 H% J]& ~9 q/ ]4 R+ l  W
set j (j + 1), ?' H1 h, l/ Y) v/ ~
]6 S" p; l7 ^  o3 }
set note (note *(exp (- (1 / k)))/ k)/ I$ T9 S+ n# o$ l  A& F: F
set credibility-list (replace-item i credibility-list note)% }: f* v1 s, T7 O
set i (i + 1)' |$ j$ E1 v0 x$ \
]7 @( v, p7 j$ m$ ~
end) T" e1 x* z6 ], V. U- g

$ m: f( A, B9 p* ~9 @to update-global-reputation-list
' d. E- L% w+ ^" A" P. l5 c2 [3 hlet j 0
9 z5 S; }3 ~4 O) owhile[j < people]
4 J4 D, C, M; T8 y5 B. _8 k[3 Q0 {, e& D) ~% o0 T+ F% k  {
let new 0
9 K+ O5 T9 D7 [5 \# I' b;;
暂存新的一个全局声誉+ B) z/ O( z; X4 l. T
let i 0) v' y1 y- U* Y+ B% \$ a1 b5 \
let sum-money 0
% U4 B, j' `7 h, flet credibility-money 0; }/ Q% i& e4 P$ X% A8 Y, ]+ f
while [i < people]
, c7 U5 b' a. x2 a' J( h[8 a; |% e: f! ]1 ?
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 a8 I6 z) j& Y, ^, I
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))/ }+ p$ ^9 f6 N* u  r2 o( m
set i (i + 1)
6 s* R8 L+ `# ]" t) ^  x]
; U& M4 l- l! L% H9 g/ ]let k 0
5 \. S1 ?" x0 u8 y: E! _let new1 0
: V- X$ H3 @. n1 z8 t! w) L) W4 kwhile [k < people]* n  U  T; h/ m+ [
[  U7 C6 v: Z& E5 n3 y- d) b
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)/ D1 D' C+ X, z+ A6 o4 C
set k (k + 1)
; w) z7 N* ^$ y6 [4 U]" P% N( S5 ?+ d- E; i: }
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
$ X6 l( Z8 ]& Kset global-reputation-list (replace-item j global-reputation-list new)
# h# x+ t( z: U7 m8 Lset j (j + 1)
4 Y0 y8 E0 E& X0 B  ?; a0 E" P]9 E: b8 |& g; h2 r2 C
end
4 B# j* N0 V$ _; g
5 ~$ ^! d( A* i% m) K+ \9 B. V5 i) _# Q' X9 [8 f) S
5 w& i  o/ S5 e( r3 p8 [: g  g
to get-color
' S( _+ V8 L% C6 Y
  ?: g9 n% ~3 q: A3 aset color blue

" Y+ O" U- c/ }end' \0 I, @5 t( S7 Z7 T) C: n# L
, j6 j4 p: m  d6 [6 y9 m) E
to poll-class
0 _7 t, q# Z  wend
! o. t* ~1 _+ N4 u9 K' j
4 F- [$ R9 ]/ z- R( i$ Kto setup-plot1
7 X$ s- H# y7 C7 M( _. t, I6 z* Q$ Y( u8 r/ r5 z# M- v8 a
set-current-plot "Trends-of-Local-reputation"

+ @: ]4 P. c7 U4 R# t/ L3 Y2 w4 A: I3 O  {1 v) j3 q  Y2 w# D
set-plot-x-range 0 xmax
+ O& `+ @1 _6 o* M7 g9 q
8 M) j* C; \# Y/ i# ?$ ~  F
set-plot-y-range 0.0 ymax
# c% F9 U: g* a$ H( d
end# W9 ^( H1 u6 x  l6 K3 Y

4 S9 L5 f( A$ M  k9 Y$ Yto setup-plot2
9 y& ]+ w" C; k& ~1 D" X- r1 l$ Z9 R/ c! L$ V  x6 j9 H7 I8 P' F, D# }
set-current-plot "Trends-of-global-reputation"

. e3 W5 s" X  P$ D4 n% \0 Y5 q- H, I+ B7 |
set-plot-x-range 0 xmax

2 @; l) K' u! G6 l0 Y- `" p' L( m' i' {3 t
set-plot-y-range 0.0 ymax

) u; b* M4 E/ ~end. d  v% t( A5 d; n1 L% u: H

/ E) A* l9 R1 s+ D7 f+ dto setup-plot3
! E; v" Y1 G1 [& x1 O
6 K6 L  d- j3 J/ ?" F# T3 a4 Uset-current-plot "Trends-of-credibility"
! V; w: H* W# \+ J( ?
/ }7 E, B# n7 D% P
set-plot-x-range 0 xmax
8 j3 C0 u3 B% }4 o2 k1 t

' t$ N" N4 W* S; d0 y" o( Xset-plot-y-range 0.0 ymax

- f5 b/ ?$ X" ^end
# `7 X0 Q; t+ C8 ~3 s6 i, E5 ^  Y) ?4 w6 B- O, c
to do-plots" v/ U1 r, I4 g* G
set-current-plot "Trends-of-Local-reputation"
% U" b5 W5 p+ \3 P% Sset-current-plot-pen "Honest service"
  m. y0 c( B& m% Zend0 G; X) y! T: ?  y4 P( T* P' S6 s: ]

2 T, i, `4 A* Q( ?7 L+ u2 r) ?' t# r[ 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 P3 ]( _/ v
+ b4 e; S1 r8 n7 x
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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