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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:
/ B7 C" a6 g- `' W/ j, kto do-business * ]7 {0 L3 b; T8 y/ \& Q( A
rt random 360) N0 ?9 W/ u% x
fd 1* ]# B# ~) Z4 J/ f3 T; P8 Z
ifelse(other turtles-here != nobody)[
5 t* l2 D: {! X   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.
3 f. y4 x' z4 A6 s   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 C, N9 w0 n3 B$ f- Q- i1 w
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. _" r! W# m0 t' F
   set [trade-record-one-len] of self length [trade-record-one] of self5 U7 y% z' }& \: g1 p* c" `& i
   set trade-record-current( list (timer) (random money-upper-limit))+ m5 N' i8 E, k

- A2 Q; a! [7 ~问题的提示如下:5 p2 ]# M) M+ N" n' u
3 V# @" K/ E* H' s5 t: \
error while turtle 50 running OF in procedure DO-BUSINESS% m( C7 z) J, L4 {' |% W; J& N
  called by procedure GO7 r2 x+ ?) g' ?  G8 a8 X, x
OF expected input to be a turtle agentset or turtle but got NOBODY instead.( R# T) t, s! `: r9 E
(halted running of go)4 ^& ?. B! x# g: x1 _- ~/ T

/ W: K" s' c# G  l# A1 O, h2 R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~~# a) _3 v/ v" E
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
: Z+ n8 o3 n5 M; {8 s7 U/ e" zglobals[
% F' V9 h) A& a. x/ Mxmax( c" F" Q$ b7 y- R6 x* w3 ^
ymax. A) I# Z0 K1 @6 a
global-reputation-list, v7 y3 u+ \$ k# c
7 Y3 M, X- r" I  u" X% N0 M
;;
每一个turtle的全局声誉都存在此LIST5 l9 _6 o# `. o" S1 ^4 A! M2 k
credibility-list
' D, t2 h+ c% F5 H6 s;;
每一个turtle的评价可信度
. U" H2 O# c& Rhonest-service) U' k1 C' e6 y  {3 l1 l
unhonest-service: W8 e  f+ Y. t4 H* L# X( B
oscillation, O7 C$ f# q- h) F
rand-dynamic
! B( W. C3 X, V! B, B]. e3 r( C2 T9 }8 q

4 y& S% c0 i5 \  yturtles-own[
: Z. ^1 M, U8 A6 J7 o6 g% Vtrade-record-all
- f4 ^) R0 q  p5 I3 W;;a list of lists,
trade-record-one组成
( h) B7 g- t0 z4 m: ^' k1 q7 htrade-record-one
! @! k$ Y9 Q$ i9 K  R7 @; 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
# s1 Z: @& ]! L# ~- ?% y
$ f* x0 M" \3 p+ 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]]
  U: ~3 c5 N$ c5 t* A' mtrade-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]
, d, |8 M1 ~+ A( |2 xcredibility-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
9 f3 T& ~3 W" u( k0 bneighbor-total9 s3 W2 G9 d1 E0 O( L6 U
;;
记录该turtle的邻居节点的数目0 |8 C/ V6 z( ~0 s) `0 h1 Q
trade-time
; p0 y4 ^8 @. _;;
当前发生交易的turtle的交易时间3 b+ U. Z& j( d! i! g- P
appraise-give
2 S. [# N& A0 B4 b+ R0 N;;
当前发生交易时给出的评价5 y( U9 [: T, j
appraise-receive4 H! T3 L7 ^5 h# [! g# n- b! r7 x( W
;;
当前发生交易时收到的评价$ _# J/ Y* C4 a4 O7 G6 v) s0 {
appraise-time
! h- P& m, h- o1 l+ J;;
当前发生交易时的评价时间
% Y9 F) }% Z( m" `! Q  ulocal-reputation-now;;此次交易后相对于对方turtle的局部声誉! u! c1 N2 j( M; P3 V; T" @, G0 `
trade-times-total- V5 J' a% X& A3 l8 O- v* d+ ?
;;
与当前turtle的交易总次数
1 h3 x- T: I* f0 Ztrade-money-total5 w4 X; w0 h1 `5 T
;;
与当前turtle的交易总金额
+ R; P* ^/ F: }4 Hlocal-reputation
2 e# Q2 A) o. u) K) Oglobal-reputation3 d( }$ N* [% W0 |& A' a+ A4 n7 g
credibility' w$ ?" h0 i0 J2 T. A* p: R+ _
;;
评价可信度,每次交易后都需要更新, j( c' U/ p1 V) y  r
credibility-all
7 ~$ ~: |  L0 W% x* z# U;;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7 {3 K9 t- V$ t7 x$ ?
& @+ M7 N- u$ S6 f  m
;;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- \; G$ P7 C1 {) }
credibility-one
( i7 N6 }5 Q* Y: t3 I! M; I& O$ X;;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
7 G6 {/ ]3 b% h3 C& nglobal-proportion
: N0 R( Z$ t4 G5 p# ocustomer$ u* e) S( n/ q. u& Z3 n3 w6 y) W# c
customer-no# b% F. F$ c" o) X2 i
trust-ok0 o/ T2 B: g/ Z3 E5 K9 g9 n! C: [
trade-record-one-len;;trade-record-one的长度4 Y7 e" `! I/ A& w5 ]# v7 p3 S. p
]: X; f: g; E; c1 e) h4 Y- I2 F
; x# f( Q7 ?$ Z
;;setup procedure
: h! M* l1 _7 k4 C8 F" S* T  k( F/ M8 K
to setup
, U1 {' T% o: o; c$ ]  _2 c
: q3 B4 G4 B+ n/ u- j3 G# ]ca
3 J+ @! R7 K6 p. O4 L( a5 G, {

% h# w3 t7 z& S. o( Xinitialize-settings
  t7 Q% {/ _+ i6 b/ g( d
  @5 _2 O) T$ H) i
crt people [setup-turtles]

5 ]+ i1 U5 z% K: O& S4 e! R
! U0 I4 B4 D. D4 Q4 hreset-timer

% j, G# k6 p5 _: T2 h8 o: C' M" q- W7 C
poll-class
! B/ K& I" S! G! d
- S9 o  O8 f6 A# O. k7 }! \+ ~
setup-plots
2 S2 v) C, j6 c5 U; A# D" y: B5 z
+ U9 I* i2 V2 n. {5 [" H
do-plots
3 W; F0 f0 g3 y' X* c% b( `: K9 |
end
7 N2 \: \" r5 H( B' x& k0 i" G( C8 F- O1 M0 r  w9 s
to initialize-settings
$ |8 x: [" B" p, q! f8 z0 J
& i6 X. @) G  X  r6 S' Pset global-reputation-list []
  p4 z* N: ]6 N' z
. X) l4 }, R3 i- d0 C$ f# x6 u
set credibility-list n-values people [0.5]

) K# ~% r+ |1 G; d- L: |& K8 F: }9 N. O+ U
set honest-service 0

0 [1 l9 y3 O" O! U$ I3 [
/ ?* W. w  c  X9 b& G% u: lset unhonest-service 0

! B8 x2 Y, x4 L
! T( E* V  o) `. Tset oscillation 0

( a; ~% S9 N8 Y/ u& T
& B, e7 s! o% h. Cset rand-dynamic 0

  T0 N2 u9 }5 w- i. v: jend
8 m8 x+ \# u4 p7 @9 K4 z% ?/ P; Z( [0 D( X+ U* b4 D
to setup-turtles ! d; ~! _& l1 e
set shape "person"
: W& i' V+ W7 L. T  _setxy random-xcor random-ycor
: w0 F5 _5 o0 U0 yset trade-record-one []: @! z) }& \. ?' g: s

' N# |: v1 K# a: j4 u. T, Sset trade-record-all n-values people [(list (? + 1) 0 0)]
) q/ b9 A( T& x: `8 H

( ?- z  O9 E3 L8 r, ?+ q) \set trade-record-current []
* E" j6 Q8 }/ X" Aset credibility-receive []& g; t' y6 g& {* W# V# H7 t
set local-reputation 0.5
# I2 q2 k& x& l/ _) w: tset neighbor-total 0
+ t4 C$ F9 y% v* B  k- ?* p' g: eset trade-times-total 0
! t/ u( J1 P2 y! u- Jset trade-money-total 0
' B7 m( d7 q' b: h! S6 n  s5 Yset customer nobody5 g. M1 `1 R( E' z1 m$ u8 v
set credibility-all n-values people [creat-credibility]6 q: ^9 s" r- ?
set credibility n-values people [-1]
0 p" H( b+ `9 h, H0 D, Aget-color
3 E3 K" G5 X* K' f% I, w

# s$ ~2 M" t" ?9 U3 t% H) O0 oend" o+ \' }3 L+ d& z1 q0 ]: B* @

5 p' t# N1 J- uto-report creat-credibility& e; d( s, m* P4 {( Y9 G
report n-values people [0.5]
6 R# Q4 a" x. [8 @1 w9 o. \' Yend2 `$ Z5 O/ E3 A! G

7 u* e- t% n5 O+ _' Q+ R  Q) S* Zto setup-plots4 l/ B, C: q- W
3 R- b/ d3 J$ B& \) _8 L' c% c
set xmax 30
! a& ~$ ?: O8 ~) I
1 |6 W! e! {8 x3 A
set ymax 1.0
- t: z( F4 Z0 G7 v8 |' g' D, S
# Y+ f; E9 E8 P% b; P9 [
clear-all-plots

4 w" ?/ U$ E% Q7 O6 Z% ]; l4 V: u3 G3 U9 }% `& m' V
setup-plot1
# V" ]6 s3 Q  F9 C- m2 i

' m5 c  a  E2 t, Wsetup-plot2

0 D; k6 K- G; g1 Y2 j' G8 x- r0 _8 c9 [2 a. x8 T5 F8 t1 S/ ?2 u
setup-plot3

5 d4 q7 U2 G# p1 _; q( z* Q; gend
, s3 t  |2 u) B/ {+ e' U" {+ O8 y. \8 Z6 ]  \- d
;;run time procedures
4 b, [( ~$ E+ u" q
/ G; f* |1 X$ B9 }  H# i9 zto go
) V7 B$ Q& R& C, N$ w5 |' g9 h  m' J5 I
ask turtles [do-business]

$ {) o0 G( g3 R0 x: e# ]9 g+ nend2 Y; r/ o- a3 a) e: d! O  e
5 S2 Z: B2 U0 C7 F0 k3 T
to do-business
" V. t8 g, B8 A# U

: y; u4 R6 ~: }! S! B- v7 a5 B5 J! r; a6 v' n- Q  z9 t$ a
rt random 360

8 G  u; D5 B: I6 R) k! q
1 x3 X( ?& k3 j8 _+ \fd 1
& f& x; I( W3 h9 G

" f3 R& Z  T2 |9 sifelse(other turtles-here != nobody)[
, I# n; o, G+ ?) L* g: B9 }
/ z$ e, }/ P2 q& S& l; Q# ]+ e
set customer one-of other turtles-here
+ G4 Z( r" L$ O2 b5 }5 r
2 j# l0 k! t6 F+ _- ?
;; set [customer] of customer myself

: ]$ J& f" V. `
  j3 l: F$ {0 I, F9 i3 Y2 {& Hset [trade-record-one] of self item (([who] of customer) - 1)
3 J# k4 g, W3 Q/ W9 i[trade-record-all]of self- S- m, n/ {. T
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
9 g, |+ L5 G$ b( B% G
0 w! e4 ?( V6 `( K6 M+ y' ]
set [trade-record-one] of customer item (([who] of self) - 1)
; H4 P5 B8 D2 ?) m% S8 X, Y" c+ h[trade-record-all]of customer
" i6 ?8 F5 n. x8 j7 V  ^

+ [% }6 x& q1 B1 o5 @! D# tset [trade-record-one-len] of self length [trade-record-one] of self

- q/ W& b& |3 [9 }' e4 a0 n4 k2 q9 n6 g9 L" L: ~! F
set trade-record-current( list (timer) (random money-upper-limit))

* K7 D( r  _1 u- e
: f# e3 z: e2 B3 Nask self [do-trust]
, q) ?$ T- Z# c) s  Y;;
先求ij的信任度1 q; {3 u6 K3 j3 o% P* Y% B: X

7 i+ W* U+ h7 U3 @if ([trust-ok] of self)3 V5 T* p0 t; s$ j2 ?
;;
根据ij的信任度来决定是否与j进行交易[
0 [5 Q- ~( P: G$ z0 T: N, Mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" a% o! W7 Z% _
: |  v) S" m. g3 e- S1 S" l
[
* ?/ S, Q+ `" x& ?8 {7 h# J6 I
/ |, }! i0 `* _$ e- [$ x3 F- a
do-trade
1 ^" `, }! U6 N! P5 t7 v- ~. L1 d

& P/ h* ?: \+ \update-credibility-ijl

6 r8 `7 u& c0 M4 Y
$ T# N9 s1 X- r4 x, ^2 H$ e5 Oupdate-credibility-list
6 d1 d; V) z! ?; x6 K
: n& C5 a( l; p) Z

+ k7 K! A% c& J2 a4 D# Gupdate-global-reputation-list
; h# p6 U3 l  d" _: I7 }. e: x

/ |/ Y% G4 N+ w0 I' f2 lpoll-class

1 r8 z6 }. ?- E  p, w6 _; X
1 g+ ?, n5 J1 ~get-color

( j/ @; K1 l8 }% X
0 z0 J+ x& a. g; x, b]]% r# ~9 J0 A( z: w3 A3 C; W

+ I5 N" g" K9 d;;
如果所得的信任度满足条件,则进行交易
/ N/ F8 H- e2 \$ t* p' }6 v# E. ?6 e& ]3 ], ?: |! q4 ~
[

3 p$ ~1 e# y9 m8 g
7 C: m9 \& x0 Wrt random 360
4 i" A$ O4 i$ R4 X
" i+ h. N8 i( K! K2 |! D
fd 1
% Y/ ?, T: ?- Q1 m* @2 F
) W2 s* C8 u( p- E2 ?. u8 j3 ~
]

% Q$ q' j$ p- @8 z: m/ A
) B: B# b. U; `, Y  m# Fend
8 w" f0 ^/ ~& ]5 U
$ h; W% B: W' D' ?' T
to do-trust
) N' o% I% g& \5 ]% L% N- yset trust-ok False# m2 ^' L: V' C7 @' ~$ ?# k6 D

# R% b! W1 M! ^

, V* i7 i5 v6 Clet max-trade-times 0
( U  s% ?  L6 S* q9 Xforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 C. s7 _( H( |' l3 u, j
let max-trade-money 0
7 e) b; i& r) h8 V0 m& [9 nforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 n6 W0 @& ?! J- K# k  ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ U( I0 l, I- a, d8 |3 m

# t: \1 M# ^; t/ B$ H6 x
0 O# R. ~) r& N! ?5 ~; ]6 r
get-global-proportion
' a8 f( \( P9 P# @let trust-value
( Y/ O' G$ f! l; N0 z! z5 [+ Olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

, S4 h/ O' a  T# {if(trust-value > trade-trust-value)
0 o8 n: w5 c, T: g" p[set trust-ok true]
9 h2 W4 f( X; p* M8 T& K& N3 W* Eend
. l1 H% C- c; ^8 T7 _, ?7 }  _2 G8 l( t& W5 g9 f
to get-global-proportion
" t& ^1 G! D& C8 G' [& p1 ~ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)# O6 Q; l! N. ^. R* u/ O9 e# j
[set global-proportion 0]/ ]& L) a% a* |5 [: _3 X, M
[let i 0
  \' a' E2 Y4 K5 {: `1 Qlet sum-money 0/ S4 P3 ~& l! o$ h$ ~( l
while[ i < people]4 d% S' i; d! b8 X1 a
[
! a# C" u, s8 U$ s( z2 D$ U& D& p3 gif( length (item i  g! n; a  |+ l$ _: T
[trade-record-all] of customer) > 3 )

. ]5 {% f/ ~- U# ], k8 q# Q  Y+ v[
. k3 Z2 e, E' N/ Gset sum-money (sum-money + item 2(item i [trade-record-all] of myself))- y$ S/ Z; q6 j' u5 Y* c
]+ o! q4 m+ J# T- b1 _- R
]; r: ?6 j9 j  C/ x6 f% Z, s; D# `
let j 0
+ J- U: N# y9 F4 q; I! }( \let note 0  l# c5 B# u8 C% Y. Y3 M, h
while[ j < people]  f+ v# |2 h( ?4 P, O3 F' m
[
9 m7 I! L4 x8 k# p! U1 H7 sif( length (item i% ]  N( P: ?7 U# e5 c
[trade-record-all] of customer) > 3 )
6 E: ^2 w: E( m! ~3 z; Z' O
[9 E+ U) h5 O, h& \- `4 m
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 B; x# w* A# Y# D! g5 P- l[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' S; ]% q2 m, u1 p5 x7 t[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
9 r* T* i/ G. `6 h& b$ y; ], i6 Y]: H' a" T( Q  C9 O3 L6 z
]+ @+ f% y! X' Z/ J
set global-proportion note
# w/ x- c7 \& f( r$ b]: ]) n' o3 [$ `, B
end
2 ^1 e$ ^; D& c1 c; d3 J% N5 p
/ v. k7 |0 n2 y2 |! @% xto do-trade$ j7 n/ g9 q+ N
;;
这个过程实际上是给双方作出评价的过程
+ w* s+ [7 {! Y8 Z- i  f5 cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, F2 D; C7 v2 L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* ]9 v8 {/ r6 I
set trade-record-current lput(timer) trade-record-current% q+ ]$ P- V& I0 d+ \; h4 e5 q  v
;;
评价时间
) r  l; e+ _. Y- e  Y6 R+ G4 _. Gask myself [; V7 b, `5 \: {7 ~
update-local-reputation0 ]% |4 u" Y9 p2 L7 s  S4 M) M
set trade-record-current lput([local-reputation] of myself) trade-record-current
3 i! M: ?9 m" |$ R]
+ d' a1 ]6 @, ^* `! W# _' E" z. sset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% g0 o" W0 }3 [;;
将此次交易的记录加入到trade-record-one
/ z) E" w) X" y8 K# rset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 j+ b2 I, ?) G! M/ L7 s* P* p* Slet note (item 2 trade-record-current )
: [2 m# N+ ~2 h2 aset trade-record-current( B( I( [2 S! @( T$ Y6 A# \& y
(replace-item 2 trade-record-current (item 3 trade-record-current))

, j8 m1 y+ m  X& _$ k  xset trade-record-current! B' |7 S; b+ L4 \
(replace-item 3 trade-record-current note)
* K. b# L6 o7 E  S  ^! W) Z
5 J4 B- N) S0 A9 [* ^

0 p& z4 I$ {1 K0 G; \8 \) Q3 Task customer [
1 a0 D0 R' M) W, y# Wupdate-local-reputation
/ w* |+ H% p' _) u' _3 Bset trade-record-current
' e0 m. k2 T) B2 u8 p% w0 Y8 f+ [(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 P% q8 k% e* G, b$ R. R
]5 }3 l* A- a( }- V# N" A7 A6 p! l) f
/ A# A/ d9 _+ T. X* h8 W3 M

; T6 [7 {) u" N4 ]% a/ jset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# G$ x9 u6 {) d/ [: Z2 @; |/ @1 s
2 L' P" ~, r/ a6 Z! s' M
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& V  N1 v% J( [;;
将此次交易的记录加入到customertrade-record-all
$ c8 {9 R4 ]) j+ ~/ x4 a/ b( eend5 Q& Q* R, r2 d, J% H; j, }9 x- u  E

) Z2 R, F8 `. j+ F* p" ato update-local-reputation
. [: U6 S) M% G' }set [trade-record-one-len] of myself length [trade-record-one] of myself
  }& v* Q+ p( u; C3 ^
) r1 J( B5 i7 a, L* ?0 W7 {. R) I2 a0 G
;;if [trade-record-one-len] of myself > 3

! [) p  h% {% w4 U+ i9 Bupdate-neighbor-total1 m% l" X% ?5 K: N9 p% b$ Y
;;
更新邻居节点的数目,在此进行8 `, e$ ~3 ]- k6 x. ~( M8 M8 m
let i 3! E# d! D8 @9 _/ {( A
let sum-time 0
* r2 \7 K/ Y8 D/ Qwhile[i < [trade-record-one-len] of myself]$ v* a' T7 z0 o# W! X: y( a
[
( q+ R3 L( i( i, v# q! B; k* pset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! P3 Z1 S. T0 q9 m( u3 H- y. H
set i
1 B  f9 U% P7 l3 M2 k# j( i + 1)

  {# t# B" O$ X0 n* y2 J]6 [& t3 i' m! [4 T
let j 3
: E- ]0 z% g0 L! S) T+ \3 |let sum-money 0
5 s* S7 V! L$ ]  f+ t  U' c. o& Hwhile[j < [trade-record-one-len] of myself]) u; I  x7 W9 ?( A* L2 O9 _
[* F- P( Z6 B- q- }/ t$ \2 L
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)$ e( \$ ^8 T6 H) S8 q
set j- o+ l. c" l7 Q; D8 ^1 c
( j + 1)

  u# g0 R4 E1 M7 q% v]
" @0 y& o/ i- h8 p  @  `let k 3
7 {4 u4 B% v* g% Llet power 0
4 ~: ~) Y7 Q8 |# o" V9 L- Plet local 0
$ m) ~; r2 V; [0 X5 ]while [k <[trade-record-one-len] of myself]1 e4 d3 f# y' _* H) d1 T, @- a5 B
[: v$ _7 ~1 a- e& N2 `8 C+ {; V
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)
4 z1 G$ o/ j/ x2 \# z! }8 a! sset k (k + 1)5 U6 C$ Q0 q3 f
]: }* F2 c9 f( T+ X# ~7 |8 ], ?
set [local-reputation] of myself (local)9 o1 @- r1 r5 c+ }8 H+ z/ _# X; ~
end
! k$ f6 D2 T1 F! c9 M3 r6 E$ j
$ g. Y' k2 U+ I" B& _to update-neighbor-total2 l9 Q+ X" I& y# T1 e

! o) U/ _+ `2 M6 R2 Qif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 L4 \+ h' |& y  v2 p6 Q( \% `- Y0 W1 P% X' {# ]) K

6 f7 e+ I  u/ G" q5 Z9 F$ Eend" p% S( D, E. N/ V; I. S& D' q1 t' I
, F& D# z) Z. s/ R" Z* e' v
to update-credibility-ijl 6 p% R4 `' ^6 Y' ^  o

4 s& D1 {" n6 p, s/ P# l% r* B- r;;
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 z$ `9 r/ ^: l# Wlet l 00 Z" V# w+ H& [& V4 Q3 g
while[ l < people ]* o1 d: l# \3 ?+ 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& Y4 v4 E  w' h$ D7 i9 q6 i4 I
[! V4 u$ q8 Q2 B' N
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
; W2 N( ^+ G' u6 q# K4 {if (trade-record-one-j-l-len > 3)
0 o/ v! q5 y2 J0 Q% j8 W; T# {[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
) F+ K" A5 d& [let i 3
- R% I5 @! V: S$ olet sum-time 0
, N2 t6 i, R, F! i$ ~# i2 twhile[i < trade-record-one-len]4 ]% L* B9 j8 s1 k- J  x" Q
[
: b/ W0 D- e) ^  S( ~6 V$ l& dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  O: g! p- `( }8 k3 P( {
set i: j  t2 y4 r8 I1 {7 }! n
( i + 1)
7 E2 V, Y* \# a0 z
]
. K' H4 a  W  m# Klet credibility-i-j-l 0( O" [2 k4 D) q# j+ K8 B
;;i
评价(jjl的评价)
- Y; L) I* d* j! G. qlet j 3
; d; d1 s% O2 Z  y3 L2 n+ Ilet k 4
+ @  ~  H- j- d- xwhile[j < trade-record-one-len]1 X+ H/ x# B1 ?/ W% a8 z
[" s* C% [5 Y9 ?% X, I2 o
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
0 F2 i7 q8 n4 Tset 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 [. K( I" S$ T" iset j
* S2 {+ }# h' m4 F+ m8 p( j + 1)

! u/ R) J6 O& u8 l# P: P]" T: s1 [9 W" 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 ))  B3 `1 \; J5 S

+ l- ]! |  g7 t
2 _( ], B& I! [# }+ S$ g9 o) V
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))( q& g( ?" a! h) R) |" Y
;;
及时更新il的评价质量的评价" F$ S6 W+ M4 L# I2 z5 w# ?. R
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( Q/ D  v8 U4 ^. Tset l (l + 1)& x. `7 z5 k: F1 W: D
]
" N7 s; d4 C) j+ s+ Cend
8 f, `! g- @% @3 C# C- j4 i% r% j# @* V) M4 l4 ^, W
to update-credibility-list# i4 p1 i5 t' X, f: u" _+ Y
let i 0
" N& G' `  [  ~while[i < people]
6 T2 W5 x  S# Y! x9 H3 K: g; a[" g) y- u$ J; |$ P! c
let j 09 [. d! U% f% A; Q
let note 0
9 b: ^) w- M8 ?let k 0
6 q+ L% I2 |3 R4 }, ?;;
计作出过评价的邻居节点的数目6 I: M! d4 _5 t
while[j < people]
+ M$ `+ h6 Z+ \[
( D! o; e; e5 B: [/ N6 J6 z; q+ V- xif (item j( [credibility] of turtle (i + 1)) != -1)6 o# V* D" A6 t
;;
判断是否给本turtle的评价质量做出过评价的节点3 J3 g( @& S# g4 T$ P
[set note (note + item j ([credibility]of turtle (i + 1)))
/ N0 K/ \" T* I) };;*(exp (-(people - 2)))/(people - 2))]
7 f1 ~3 m7 {- k! r* P, y
set k (k + 1)
- M7 K- y% \3 Q! a# P  ^]# l7 n  c. }# a# Z
set j (j + 1)
4 D. o  l2 a+ _6 V]& o' @( j$ y" S. R- h$ F
set note (note *(exp (- (1 / k)))/ k)8 a$ S3 x0 m( R; B* e/ Z! p
set credibility-list (replace-item i credibility-list note)
7 b! }" C2 R( v# _( S- R& a6 q) nset i (i + 1)" `( d; g( w* q& c6 m
]2 ]! P( m: `$ O, `) e0 Z' @
end9 Z/ j* K$ x; _$ n
: X' W0 R1 l# d9 P. W
to update-global-reputation-list$ T, ^0 z$ b' w1 q) p8 f6 s
let j 03 j9 P0 g- o1 y4 w2 l  G* T2 L4 Q
while[j < people]
* F7 ~# C# H9 q7 v6 D6 M[: J8 H8 n0 z' T! n" f  v
let new 0
$ O  ?) [' P& R;;
暂存新的一个全局声誉+ i6 ]; `1 B6 A' a4 N
let i 0
! @" d5 o% ~) ~4 j0 |: plet sum-money 0
7 a, s- m  |0 Q3 n1 A5 Alet credibility-money 0
+ |8 H5 k* X' T+ y' f! s( Iwhile [i < people]
; W7 B$ Q. q. ]! J5 ~[& c0 G, K% \2 i; h6 d: j0 m
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% |0 m. y* C2 M9 }+ b% {' t
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
) o" X) V7 t+ j7 cset i (i + 1)7 o, C9 w9 r9 r0 ~% c* R- h( B& f
]1 V0 i6 t4 P# i% b( N
let k 06 A: J: Y& N4 l2 P! x
let new1 0
+ p0 j  j1 ~: g, M# u! T. [while [k < people]& a8 {6 A' H. G1 U/ V0 m+ i
[/ i- M7 r. @% F  |' Z
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)) ?4 W3 [) X0 ~% z2 v" k! y5 B
set k (k + 1)
3 k! o# z3 x7 t4 r]: Q! @" N% @' N/ m
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% A- e, x* p* H' s/ A: fset global-reputation-list (replace-item j global-reputation-list new)' A6 E2 {# {1 m' g  t2 w
set j (j + 1)" t, ?& n- @! N7 q# z# F8 R. d
]- r  d2 U8 [& u% c9 B
end
  t* t$ O0 _$ G4 c$ x3 V7 ]. }; }! }( k% r0 G/ H5 m

* D( [' D1 ^! S& R" l) \6 Y0 M& w( h9 c& C% Y% d
to get-color
" j: M, I4 Y5 |0 g6 X: q
$ ]- m$ |5 |! j' D6 Kset color blue

9 y  v: `) T3 e. B2 d7 l! [end
* u0 s' ~  ^2 E, W6 Q+ L1 [0 X2 @/ N$ s3 q, B
to poll-class
# ~7 C: a, l* q/ @' ?end
- Y/ h$ ~1 h/ H1 Q# n9 y6 }- m
, H) d$ l+ Y7 B: N$ W3 [to setup-plot1
. l/ R9 Z' y2 H9 V: p" p7 J( f$ Y; B
9 b+ d, Z9 a" q# uset-current-plot "Trends-of-Local-reputation"

' Y* ?4 D9 ^9 Z" }- @4 ^0 Y- D- s& m7 z
set-plot-x-range 0 xmax

5 O" X( |% T# I# M7 S: Q/ P% C4 \' E  y+ p3 @" X" Y
set-plot-y-range 0.0 ymax
: I& E6 p0 o4 u+ C: J' E) d: R
end( a' q8 M6 C) s: o$ p
- J  k7 j/ e1 `
to setup-plot2- r2 _' }0 t! c8 Y
3 h" _0 J4 g' |9 |, G  ~$ Y
set-current-plot "Trends-of-global-reputation"

9 K  d# n' v+ c4 f
. l% \. u4 J& Q" E( c/ Aset-plot-x-range 0 xmax

7 J5 U$ P; @# H% |) W9 U  j
: j8 c. L* I/ _0 _2 b# Q. fset-plot-y-range 0.0 ymax
9 `' Q# G: c' K/ O* e; e
end
4 ?$ y  {0 ?- W7 @, n% Y1 T3 e( d8 \( Y
to setup-plot3! F- m3 z4 T0 C. b- U" t" Q
" F; }; _* t% ^! b
set-current-plot "Trends-of-credibility"

; c5 j( }. r3 U( N% y) f" w- ^# P9 [+ _1 K1 E% y( A$ A
set-plot-x-range 0 xmax
" |9 W; o! w$ P( j3 h
0 R2 P2 n/ A+ _( `
set-plot-y-range 0.0 ymax

1 ^' k5 G4 y, k: `  r% gend, x$ e; y" Y5 d1 @% s3 }

9 F' O3 p, f' I: O3 [to do-plots
. W  c* K4 m4 ~' e  ^+ G1 Eset-current-plot "Trends-of-Local-reputation"
- P& E2 A% I! w- L  vset-current-plot-pen "Honest service"
4 L/ l7 Q; G0 e/ hend% ~6 l. X; m+ v- s' X+ t

4 n6 O) d" s5 ]6 E[ 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 a! J* r( _7 r/ Y  k6 K- y

9 w, ]6 P' W0 ^9 a9 D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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