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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:
' J* q, @2 s/ gto do-business # }4 s2 a; C6 d  I% n# ^
rt random 360
- k5 G, E; ?3 Y+ Q' \, y$ { fd 1
5 z2 a. n. [! C% R6 H ifelse(other turtles-here != nobody)[
+ ^& R& B' f1 D# Q; ~   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.8 j% o1 f2 p( v
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : a! z& [# l/ E
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, w. V6 f- C3 l' M   set [trade-record-one-len] of self length [trade-record-one] of self* Q7 j/ K: b) h7 j
   set trade-record-current( list (timer) (random money-upper-limit))
  C2 u1 J1 E5 J: k0 _  |; V5 w! s4 z: C+ B7 f2 g+ l) s
问题的提示如下:& T+ A/ Y- w. x

" _0 F  r7 O; `6 Herror while turtle 50 running OF in procedure DO-BUSINESS# P; h9 J* J5 t8 ?7 B  j
  called by procedure GO: w9 y( e- c2 i3 ?3 O5 }' Z/ r! O
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
! j" ?0 a  A. ]$ J9 t/ G
(halted running of go)
0 y* n. O& U* f. ^8 U5 h1 V  Q5 K$ m4 y# K& B3 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~~
0 R& H2 m: V* p5 H8 J: ]( h$ d5 ]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  d6 r7 L# S. u# s; G/ Z1 t
globals[
1 g/ C% n# M; T' J4 j& |# t- \; exmax( v1 X1 T; b6 M9 q0 E$ i
ymax
+ ~! G; F" I0 R9 ^" N# gglobal-reputation-list
5 R. L6 u( s- ^3 W1 X$ e6 t) ^2 |/ H' e
;;
每一个turtle的全局声誉都存在此LIST
* z- P" K( g% g5 |+ Tcredibility-list
) X8 G$ P# v9 @, G: g- `;;
每一个turtle的评价可信度* l/ Z# T' F& ^: i
honest-service
9 x; O; D& n7 v4 A4 Q- ]. _unhonest-service( G9 \, `1 D- Y
oscillation' j, O$ |) ]* e9 `
rand-dynamic
7 G7 W- X0 Q1 |, f; S& y! \0 D, b]0 @! P0 [6 x$ A6 u

! \. h- T8 Z( L" a, @turtles-own[
+ j! Z5 k. m+ P% b& P7 ?trade-record-all. O; W2 J5 t: E( c0 \
;;a list of lists,
trade-record-one组成
& r. p& j7 O$ t; L. b& i! @trade-record-one1 J/ m5 i8 @" Z' 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3 a9 A2 W) M, w; G! d% ^6 a. D

2 ]+ U( \4 {- C( K6 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]]
9 T# N  E; C1 M! B" X9 G1 qtrade-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]
, U3 W; _9 X* t) y3 mcredibility-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
1 [* N" J2 @; O9 Xneighbor-total
' X1 w* S/ i& J# I+ H* C;;
记录该turtle的邻居节点的数目
$ U4 ^- z' v1 c" S& N8 Ztrade-time( n2 u4 t8 U* y, G/ n
;;
当前发生交易的turtle的交易时间9 u, \8 U8 a2 a
appraise-give+ Y' e6 |( n4 p
;;
当前发生交易时给出的评价" K. q9 v' n* u3 V. [0 V$ Z
appraise-receive' Y1 z* a* d2 g& x+ T3 h. @: C
;;
当前发生交易时收到的评价
* T3 z! R- b/ t7 Pappraise-time
3 o7 c( ~' ?) |3 n, h+ |/ L;;
当前发生交易时的评价时间& Y& i$ v( L8 E8 K+ L
local-reputation-now;;此次交易后相对于对方turtle的局部声誉; q. J2 |  S: x7 f( Z* A" N
trade-times-total
7 R; w( Q0 w1 R2 A( s% }; U9 t6 y;;
与当前turtle的交易总次数
; h- X3 U/ ]5 d* e3 R# O$ ntrade-money-total. Y7 g. M7 B. H8 z0 Q& e
;;
与当前turtle的交易总金额- F4 r+ V6 h, P0 R. a
local-reputation& ~7 j# p" E3 r  @# V* V
global-reputation4 v7 C( N  q$ k3 ^) t
credibility
- c& i  Y( S% {; J" T& g, z: d& D+ u;;
评价可信度,每次交易后都需要更新4 H# b  z- I! i
credibility-all* |  p# ~7 j7 f3 A; a- D
;;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0 j# k2 |6 r4 A. H& B1 ]: O) \
8 m$ ~) X: b0 L: ]# p8 h
;;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
8 C' ]( K* b  U0 s; bcredibility-one
, W+ K' G3 B. r! g( v& M8 f0 F;;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
& ^& g5 w7 k! nglobal-proportion5 L5 C. K( i" C& G) v# j* ~9 {
customer
. K# ^/ G4 W7 m' y0 ^8 @) ccustomer-no
+ G4 ^5 b( x9 K* Z& S. Y" Mtrust-ok
* S& \' a, W. c% Q6 u( e6 wtrade-record-one-len;;trade-record-one的长度
; l, r# Y' ~# b' |/ u8 J* f]# [/ o; E) u& G! n7 t$ v

2 \. C6 X& u$ H3 B;;setup procedure
" S) K  i2 z4 e; Z- \( l! F5 d% }. o0 r/ b1 ~8 z
to setup
+ G+ c* o- c6 I$ C! k5 ?' o$ f  `5 \% W2 _) Z$ f
ca

4 X4 E. q- R# n3 {3 c5 u3 h2 M0 f- O( @- u2 g
initialize-settings

: l6 D) X7 E+ ?0 K5 m' Q3 R; S
! y- M2 q6 Q0 C. O' P9 ncrt people [setup-turtles]
( f6 \! u3 f" T. Q7 D% n
/ I! v6 Q; G5 I2 ^
reset-timer
0 C  \7 W+ g* `  ?4 u* g

6 T" G; |, D" X# L& qpoll-class

, ]5 L0 f4 [4 R% C4 [; j9 T- q7 a3 T# e/ H2 i4 T$ ^# u" Y: c/ D6 ^
setup-plots
- O7 s9 X! ^- a+ Q
; ~$ g1 y) M0 k& @; l
do-plots

3 V9 U1 w7 `$ {1 M" _end
+ f, L6 g3 Y* T  G# \6 o2 X# Y; b6 W- y
to initialize-settings
# d' t+ y- P; `8 w4 e% x& l+ }6 C8 q- q0 A
set global-reputation-list []
6 x! l% j8 i, p/ y2 ]7 Q# W
2 l& F) m& a' a8 \! U( U
set credibility-list n-values people [0.5]
. E- N+ c' \1 e+ ^% u: {5 s

: c; b2 x: v& w" N3 fset honest-service 0

9 {& |2 c& ]" [5 F7 `: a# E! m, K0 g. _9 }0 v! v$ @) o# W
set unhonest-service 0

6 D9 K7 Z  L2 u! U6 h& ]( A; b' g3 A; x, u) U
set oscillation 0

2 i5 I% W* F& G" s+ c* [# m4 `
% w% F( S$ q% Q( y3 c: L  qset rand-dynamic 0

: Z$ I5 Q" @6 Q/ Rend
! ^& R1 f2 P' E6 L3 h, F3 C9 U8 |! H6 ], L7 Y' U3 j. @
to setup-turtles , @; |$ h5 M, S3 ^
set shape "person"$ T+ `+ X& F& C
setxy random-xcor random-ycor
. o0 u3 O. t2 p% F9 N8 j7 |' qset trade-record-one []8 I+ P! ^4 \+ ~8 H  t  H" X; V
6 b3 `/ A  Y/ Y. A
set trade-record-all n-values people [(list (? + 1) 0 0)]
1 ~1 {3 I) N  e6 T$ M6 u% t( h* {
8 v2 Y' @+ J4 [# m3 N; `# z
set trade-record-current []2 L' j" u+ z5 w/ w/ D) h
set credibility-receive []( P6 f- V7 V9 c* r7 B3 J  z
set local-reputation 0.5
$ s' \2 r$ |  V- E. s6 jset neighbor-total 09 e7 @" {9 l+ R
set trade-times-total 0
' n& X1 D$ ^# Kset trade-money-total 0
' A/ ^: J: p' X- E& dset customer nobody
% e/ S, a% X8 J' V% pset credibility-all n-values people [creat-credibility]! ^: y3 {5 N) [3 V4 U& M
set credibility n-values people [-1]
4 G" _" [, [6 }% R3 M$ d, Lget-color' H7 ?5 {0 t* F7 _: ?0 R

  q4 ]2 ~( N' aend* \, i# H' C. m9 k8 [

# u, l+ W% ?7 x, f2 cto-report creat-credibility
/ q6 G+ _! v( }- B4 g1 F3 {report n-values people [0.5]
0 x, y' P- P& w" b1 S" Gend) w6 p' {6 X7 m! M* Q

, L6 {' i% f1 ]/ C+ e3 v' f( d) pto setup-plots
( _4 i0 N9 Y! M* }% \! Y' h. _1 y3 }  w% p6 e' h6 F
set xmax 30

; p5 _* ^5 Q3 ^
( z6 s9 u& g- e) ~5 o+ R: Tset ymax 1.0
& n' g% W" a0 v+ W- l! W6 O

2 j: `. i" E3 Z5 Pclear-all-plots
# X( N" g: r! x' H* K
0 T- \" O% L; h) ^9 q/ ^
setup-plot1
9 e3 \0 ^. C+ b/ R+ Y9 n6 A& z/ I

* R; @0 {; R: Y7 Fsetup-plot2

& u! j  b2 X% ~9 I" J# h: n0 \) U+ F0 H* B* i2 N, ~( D
setup-plot3
/ M# C& ^6 D  B* T/ [/ U8 d7 X
end, o3 _& D( n# ]$ \  \
4 b% [3 c5 u" Z- c$ r
;;run time procedures4 q* g, j; R0 H/ _: F! ]/ @

$ Q- V7 @- }' {- c$ Yto go8 N' }* e/ s( Y6 ^) d1 L/ \, A; E# U
3 U& w2 P9 E4 x. e8 d+ p+ F! x
ask turtles [do-business]

1 e  _) _+ E  yend6 ]; C# r, w) b/ h4 G7 m
* K- B; Q2 J- p
to do-business
1 M" g# g7 X* Q% H# ?* N. [

# {! s( q- f" c( a$ f. V) h
) k6 g9 _8 C7 k0 e$ o; C; Crt random 360

# M6 ?; L' f' _; v! k8 `( _4 J7 o$ r
fd 1
' D& g8 ?* m1 x

# D7 o3 f  R. b, ~5 P( V4 Wifelse(other turtles-here != nobody)[

' V. O7 v+ l4 I. U+ E
# ~" e4 c; I) d- ?, B6 vset customer one-of other turtles-here

- z% J" Q5 D/ e+ J1 I# A
& |2 x9 a5 X3 P) `: K4 B5 q& @4 k;; set [customer] of customer myself
; y( ?- U, R2 j( D( v. h
2 l6 \8 u) }6 }
set [trade-record-one] of self item (([who] of customer) - 1)
, I/ p0 w7 X. ^7 x+ I# V" I[trade-record-all]of self
; ], Q) q& a$ ~% i  @; J/ h8 o;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 r2 |1 t, l! m/ z( l
2 {% R  T0 V, }( {  _
set [trade-record-one] of customer item (([who] of self) - 1)
8 N$ ^. G$ p8 {) H[trade-record-all]of customer

+ s+ k" Y, B  ~9 _; w0 V: ]
3 |& a4 d) f5 f& sset [trade-record-one-len] of self length [trade-record-one] of self

! E' \, W2 y) A+ c4 F* X6 X1 V- m" J, T5 w8 G
set trade-record-current( list (timer) (random money-upper-limit))

6 c! U1 q* h/ ~3 Q* O; P9 C: [  `8 O+ I: `: o7 ]
ask self [do-trust]
) Z( }( B3 s0 P;;
先求ij的信任度
/ D: Z0 Z4 W) J6 Y+ w; p+ m. e/ g1 K" N$ k- _) A
if ([trust-ok] of self)
; f5 C5 O" E. ];;
根据ij的信任度来决定是否与j进行交易[
( I% ?4 L. `9 R# f8 Task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 H& i( @  B* K# p
7 x" j/ D7 n0 ^* K' k; Z
[
- h" x& ~2 ^1 ^3 j8 m
, j: J2 A7 w; x; L; ?/ d: q
do-trade
) d" z( i0 M- ?2 e& N8 A

; }7 u! ~; _: ?1 B* L* P; xupdate-credibility-ijl
7 I# j# N, |0 ?6 W! \" L" @7 o
/ Y7 c* U/ j/ x5 f
update-credibility-list" M- j/ j- A9 _  t$ k$ G4 b& S" ^

2 O+ h& F6 U+ ^, L1 o" K8 Y  Q2 E' S% X+ Z% Q+ Y
update-global-reputation-list
( w9 v1 F" R5 I: [( t+ }
. [) q# _0 M3 h$ I7 ?6 i
poll-class
/ d* `- {7 y4 y
2 ~5 \! W( x8 O( A6 s% {
get-color

8 F# U$ ^. o+ r# ^- [& L
" S* F1 w( ?6 J% W, a]]0 o+ d$ T% t& A" Q# o( l% u
2 z0 n3 [% H* ~1 l5 `
;;
如果所得的信任度满足条件,则进行交易
8 o8 R$ [8 R5 _9 Z1 i
, H$ p! R4 E5 X+ y' [8 u[
3 N# e# s1 m- ?- M

' m; m9 c. v3 n. r2 u: krt random 360
2 p4 h0 l! C9 r5 E
2 p3 ~% r, ?3 J" d  v/ F
fd 1

- o" r: E: J9 X/ [4 [  c8 p
' {# }8 b# C7 k7 U- w]

  |4 P4 ]. s4 v& r4 j" p# _
+ H. ]5 w/ e+ a5 Q; r5 Bend
3 T0 T. j, ]6 q+ ]/ t- {7 t7 i: i8 Y
+ r& t0 g: l4 Z9 I0 ]( K8 [4 ~# s' P, k- t
to do-trust
3 X& E$ @$ b( kset trust-ok False
3 N2 w& b; I4 K+ F
9 H  N' Z0 Q2 x5 L8 \* i5 E

1 l, P. O; M6 M; |) J) clet max-trade-times 0
7 `9 E. r, i, r: mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
. ~9 |4 ?/ q# n( _- Dlet max-trade-money 0
$ w$ y' K/ B+ R: j% e4 N' Bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 @+ U  ^0 z% x# N! {- S! O9 ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) A1 M: J& r$ |8 R  t$ [
) T& b$ O7 h0 c/ X2 \* p+ b+ ]

# @7 w+ K/ i, ~, Z/ \, L( ]3 _get-global-proportion3 M: Z/ Z3 d% i4 L/ _. D, ?9 W+ P
let trust-value* h0 o1 W8 L! K4 L- r* d) s
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)
* w# @* c& G6 M: p# [  ^$ f
if(trust-value > trade-trust-value)) o6 e: G& y# P& U9 p* v
[set trust-ok true]0 ]# a$ s* v& [  C% {
end8 Q0 W# m8 c" x3 B5 |
. C! s6 v& q7 y- I0 O
to get-global-proportion  T0 W3 l/ I% s5 d4 B$ O- w
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 v6 A1 |# O; L3 @  n[set global-proportion 0]
2 P/ k3 a5 A$ j7 t- h[let i 0
% N9 @! z' {+ {0 dlet sum-money 04 X3 c4 S1 w0 r+ B% y. B
while[ i < people]
" @9 I# B& {4 r[, C. z; j; G! |) I5 z/ y
if( length (item i# @) E  p6 w$ |% V) ]
[trade-record-all] of customer) > 3 )

. x) `9 p: ?$ e9 I& |2 f[2 {7 x7 n+ f0 E7 }% ?! }, W( A
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
! F) V. X; U9 ^]
! U7 b! p: t5 c0 P" I+ B]& d6 p) B9 E: n' T
let j 0
& |$ v1 m! u5 k  ?let note 0  P2 U' {$ }: j8 V, C; N  P6 |
while[ j < people]
" X# M" f0 f; K: P: J5 b[1 @& K8 ]: I8 [. E
if( length (item i
  G  N; |3 H; z  L; c0 |[trade-record-all] of customer) > 3 )
4 e. ?  g+ @% x& g
[: H5 g& @( X1 h# ^- P2 R1 W
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 T+ q% |" @- a: a* t. ^2 W
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
8 m0 M9 W/ n2 `8 M- J$ A! l[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ u0 I0 K/ e1 @' z7 q]
* c* y6 L& [+ Z' |/ d7 p) G1 ]]. ~, w7 j/ M  V$ m* L9 u! f3 x
set global-proportion note" V: ?3 p0 H8 c: }
]$ o. \# g4 u+ y2 U% o8 b/ k
end
9 \8 ?" B2 f9 T5 d6 U- G- M" K
) S( I5 J" [2 a# [+ |7 h$ Lto do-trade
/ C9 @% D9 b2 z/ D  A! m* R;;
这个过程实际上是给双方作出评价的过程
5 a0 V7 N( ^/ [  u+ h/ Kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) Q' K% S! R. {7 G% R* s* A; T; M
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 }# x3 l2 S' }
set trade-record-current lput(timer) trade-record-current7 {! n8 l4 ^- ], a- t! `
;;
评价时间
0 c2 F$ z. ?4 R8 f" Oask myself [
( C' \" J* N( Z4 Xupdate-local-reputation
3 o7 ]0 y! ^1 o' i+ X: zset trade-record-current lput([local-reputation] of myself) trade-record-current
3 P8 R* q" f- a8 Q4 H& ]]
8 t2 F1 x; T$ z  ]$ |$ ]* c0 rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* S$ e; K, a" _8 p- O/ n9 l;;
将此次交易的记录加入到trade-record-one
4 X, K0 m" L+ M5 \set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
( Q  L. D4 h9 {. H9 qlet note (item 2 trade-record-current )
4 W, y1 S$ ^* y: E$ ?, |0 Uset trade-record-current
2 u1 t; y: D) |  _7 U5 k(replace-item 2 trade-record-current (item 3 trade-record-current))

( v2 U, d% A  @7 `" O# R, hset trade-record-current! k  T! ?9 c6 Z( P: q) H3 B
(replace-item 3 trade-record-current note)
6 y) N! p4 n5 S% N8 D, P0 ]# x" v
  c" D# d5 G8 S$ k) F

+ g* B7 e" w9 j% v& Mask customer [) Z* {  s2 s& d. J" [
update-local-reputation# b+ q- P5 x, h: I6 B' O
set trade-record-current
- P  X" F2 g. Z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. E3 Y9 k8 ?0 ?* v. l]6 _# x6 q: W" A  N$ B) Y7 p
$ q" ~; u) y: A4 r8 T$ a" f

+ A6 i0 R5 S( P9 e2 l0 gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 w2 U+ ]. k3 K1 n1 Q$ N& a$ H
$ K- Q) n, F# Z4 |, l
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)): _  r8 `5 Q/ M& z
;;
将此次交易的记录加入到customertrade-record-all
! H3 |# L7 y" @4 {2 `0 g. Y- y- Wend
4 k+ @- V* s% l& x) v" w2 t
% W* v8 t  |/ wto update-local-reputation
0 h+ O. J7 d. E& L# r) x9 |set [trade-record-one-len] of myself length [trade-record-one] of myself& B" F( O$ \9 U- |- t4 p( U, U- s/ ]+ H
8 R. E3 ~$ E1 |7 P

8 v. h8 F; V3 @( p; f" l;;if [trade-record-one-len] of myself > 3
7 I+ ]6 g6 K# p; D! [3 @
update-neighbor-total
: q$ o) f" t9 v- g;;
更新邻居节点的数目,在此进行4 {* ?) P( U6 I2 C" R+ H$ i
let i 3
# I( T/ R. @! K. [7 Z' P. }let sum-time 07 ?1 n4 H& c; N6 @0 }2 J
while[i < [trade-record-one-len] of myself]
; ^6 j6 ^" X6 V, j. A[9 n* _3 ]& ]' R) [  P$ l" `) }, c
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ Z+ j0 X* y* t! b% Sset i& E/ n8 O& m! ?
( i + 1)
  f" [5 y9 f6 t, ^# |! Z# ]9 d
]
/ Y3 W. B* {7 e2 s9 Q$ j0 Tlet j 3
, y7 W9 R5 D) ]3 B9 a5 Slet sum-money 0
  L) }% c' p% N8 f9 [while[j < [trade-record-one-len] of myself]2 [% r& |8 ~# u0 R( x9 k
[  Z9 s. ^( s* {5 u- f" U. U! D& M
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)" U2 j2 F9 S* o! O; J, B
set j; K7 m4 p) r; F6 @# o) k5 w, N4 ]
( j + 1)

8 N6 Q4 `+ e! D]
9 H" Y' V" f! T4 P$ f& Ilet k 3
. d' L0 L! l& b* |  j3 f4 I1 O5 T; klet power 0) q- D  j; F9 r6 C: F
let local 05 W9 ?' i3 R+ O% z9 _! w! r
while [k <[trade-record-one-len] of myself]1 B. ~7 X- I4 B7 k; {/ n
[
& p; z7 N  J) }; Z1 C% Iset 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 X. P; r% w; n2 P5 O0 ^  Kset k (k + 1)# K: W) _% }/ T* y; |' @
]+ \, C: d: J4 s) {
set [local-reputation] of myself (local)
$ `5 u4 S. G) n* G) ~  qend' y! L7 z8 n$ D) X1 A9 G
" i2 E  b: ^0 _1 E+ }
to update-neighbor-total2 E3 V. D$ n6 u7 ~

. q3 ^4 O% h/ o# e( S* Yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- r, I. x+ G8 H6 Q$ r

; U! C  R6 Z+ H0 |

5 u! V" z6 a+ iend
% E# Z1 \& j- L& ~+ w! J' {9 r  _1 o& J7 N4 p/ o* v
to update-credibility-ijl : n: Y' [$ |* i; a2 J/ ~

3 Q7 b, Z1 J" d;;
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。: B# g4 V4 J) }7 C! e) F! x
let l 0
7 R$ X' \" F5 E% d3 Z4 d, Cwhile[ l < people ]% P) {( @7 [; \' r* t
;;
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
% k9 J4 F" O0 |/ E[
2 Z3 c* k9 ~+ k9 v/ [, v! f9 F9 Vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 b% M+ ~2 E( u! y$ _' B
if (trade-record-one-j-l-len > 3)& n6 Y, J( r$ l7 e! I
[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
6 v! a# n8 v  ~) dlet i 38 A7 K; Q" _+ q3 m' L5 @
let sum-time 0
6 T1 K) l& m+ c; Z. @, Dwhile[i < trade-record-one-len]
, y! S2 e+ y+ [  _[
6 U7 r7 {8 `* ~: ~$ }% q% }6 gset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 e- T+ B! T; \% c
set i
; g) ]- o/ _6 p6 O' \* [( i + 1)

  `. n. k( l! |! c5 Q0 ^+ A]
5 @* ?7 H- T0 [/ `3 T3 ylet credibility-i-j-l 0" p" k% I: x2 `) [' F4 c
;;i
评价(jjl的评价)2 e# X" \! A. |; P1 `0 v
let j 3) O. V& j' p/ f% R
let k 4
1 \' I, v# `6 W. G) [( ^3 hwhile[j < trade-record-one-len]
0 F2 V4 x% @2 |* C2 g[$ d7 C3 t. ~$ E' b; c$ _3 ]
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
- H: _% {- {0 s3 u6 c6 K7 C! Qset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)+ ^8 P$ X6 I7 \" l; q/ P# p" n
set j3 A: Y9 Y( m! `+ K+ _, u' N* ?! E
( j + 1)

. h# p5 R9 w# O7 O5 X]. t! a- {0 t2 Q  s# h. O* R
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 ))  v- D+ Y3 I# k7 r

6 f- a& F3 A9 a& Z  C  F, x$ k; ~

) R9 w0 E6 d( R4 x* V, m/ ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& ?4 u2 J. P) P. u% K;;
及时更新il的评价质量的评价  N9 `% {1 F2 Q- \
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! ]" f2 `0 `7 a
set l (l + 1)$ I# Y3 h; T% Z; A- m
]
0 d( U2 A5 F5 h8 G- [% W" Xend8 i5 T7 I* F; y7 h; I& @
5 r2 ?. g& L$ i" f; d& F( }- z8 m- B
to update-credibility-list* H$ g( K) W% M3 |( D
let i 0
7 V( \; z8 C$ C! ?; Z2 Cwhile[i < people]5 Z/ \9 X/ i9 M$ M4 u4 a
[
* a, E3 |( i2 H, r, \5 Y' [let j 05 V/ v% Y  O: h; E
let note 0$ r5 t* C! V7 T2 X5 ~4 \
let k 00 m, z# t+ m! b0 J
;;
计作出过评价的邻居节点的数目  G) k( o8 @% V  R4 d. H) M3 K4 Z
while[j < people]
6 g* |$ k9 ^- F[
" G, L- h$ t) E! x# U6 ~if (item j( [credibility] of turtle (i + 1)) != -1)( O4 v$ z  z) Q) x8 \4 L+ y( H
;;
判断是否给本turtle的评价质量做出过评价的节点3 \) B7 }: [- O. b
[set note (note + item j ([credibility]of turtle (i + 1)))" ]( }/ u4 L: |) B4 ~
;;*(exp (-(people - 2)))/(people - 2))]
& Z5 Y' e6 R9 @- W, ~" i1 ^
set k (k + 1)1 \. x" C, A0 Q( h7 U& |
]1 d: v. O2 B1 v/ n/ A2 |
set j (j + 1)" ]3 ]  S& [+ m5 J
]& L( X% u9 F* ^  Q
set note (note *(exp (- (1 / k)))/ k)3 t/ H# E0 r' `! _; @9 k+ w+ t) t: ]
set credibility-list (replace-item i credibility-list note)- ?' d; J/ O- Y/ ^  b
set i (i + 1)
2 D: ]- P$ f9 ?: T]; e" R: a) K* d& x$ S0 [: {7 d
end2 U' H& r, R8 t

0 l7 J: U% N; b* b( X" Cto update-global-reputation-list6 s5 }+ [, `! j4 Z
let j 0
$ C4 c5 I- J4 _  x* ~9 lwhile[j < people]
: m9 J" b1 Y2 f5 Z* A6 i[: W1 P$ y7 y" l7 I
let new 0
# u; s+ V6 S( B% m;;
暂存新的一个全局声誉
1 W; f- r% j1 ?$ L7 L: D- d& ^) Mlet i 0
* K) @6 A( Y/ h6 a. j; rlet sum-money 0
2 y: M7 M4 X, Y2 N2 v0 T4 X. Glet credibility-money 0( p0 z! |! k9 e8 o. x( m' M/ b! K8 ~
while [i < people]9 C" J; q" a9 k9 n1 `* r
[
/ Y  d; d- v* V% x) U9 eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 n* X0 s3 `4 L; y3 F' E' j$ v* Gset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))0 X: x6 j. J9 C7 e
set i (i + 1)
' \9 g. F5 X( Q" ^]( l8 t" @( B4 s
let k 0  k. j& W* W% T% b8 ^, y: H
let new1 0, G6 @; G% J" G6 f1 `  B+ x* Q
while [k < people]& J. I% o& U# _7 m3 x
[) Y3 i% b- f& V( J! l
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)( ]" I+ z+ t# y% Q4 z6 E- x4 r
set k (k + 1)
+ u4 V* R6 i2 N* e' Z]. C; D& i' F9 B; O
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " i( j( u8 r- E
set global-reputation-list (replace-item j global-reputation-list new)
3 p. d4 j7 c* A! X) e( }set j (j + 1)
; a& q$ B' R* \]' l  ]1 q8 b  h4 ?
end5 x( v! s8 U/ ~3 F0 L* B. q
7 ]' A" h3 _2 U3 ]- q: p. P- p

9 K! x0 L" e; S- }) {( ~1 m# o4 ]  {& @) t9 }2 ]& O
to get-color
; B, m& Z; i- L( c% q
+ X/ R2 j) [  N, Qset color blue
( w6 F" g! _+ y) Z
end8 P  O9 H: V1 ?9 I

, |$ c8 t% h- Z% S! I. l4 gto poll-class
% ~5 O" t* q$ p6 X2 mend; R9 h8 E* h6 t

$ X/ r/ C" O+ _4 @0 u% Vto setup-plot1
; p2 `/ e8 F% ?2 Z  h8 w1 ~0 F+ j2 M- _' H
set-current-plot "Trends-of-Local-reputation"
0 [  u9 L) N6 Y/ O% Y

; q; x6 I1 H1 v# i7 b" aset-plot-x-range 0 xmax

1 j, F$ w) K/ F9 z. W* n" d" |1 g4 e- s: E- @9 c4 x, l
set-plot-y-range 0.0 ymax

8 F( P9 a2 [9 J1 yend% ^9 z9 Q& o# E6 I2 ^8 s
4 P7 |. `- J" K7 J; F( z6 v
to setup-plot2/ `6 x" k. C. ^3 J% A# g( G
4 t9 {+ b" [! u9 N0 G
set-current-plot "Trends-of-global-reputation"

( r8 j. p/ r0 }, {! ]1 K
, W$ T) k5 r3 X4 Sset-plot-x-range 0 xmax
/ e9 m- u4 f2 j

' b# _4 w# A5 ^: H3 V+ M; r9 vset-plot-y-range 0.0 ymax

7 m! T; M3 p0 C0 v  i3 Pend" S0 N5 p9 y3 Q' b

0 R# X% N' s: C: nto setup-plot3- q' c" Y( n3 u* j3 E) }! ^# p
4 X0 L' q% O2 S/ X5 u
set-current-plot "Trends-of-credibility"

/ L7 j0 _; k* f+ A9 C% `
& _1 _. u- i: A6 A' kset-plot-x-range 0 xmax
) d& z7 G4 G7 _( h5 }( e

' |8 v7 a* _, \8 ?. N4 i! eset-plot-y-range 0.0 ymax

9 @, c' h3 ?* N! i. x, W/ u3 Bend
; r3 q1 |' k8 ?5 H, \2 x! V; g% T+ Y6 b- D, _3 s
to do-plots3 j% R7 \6 t5 h0 @: }
set-current-plot "Trends-of-Local-reputation"9 t5 C7 C2 A3 A3 n/ y
set-current-plot-pen "Honest service"
6 d. @: r- R" x* send
/ B0 F, x& C1 x' h( ]3 }" b6 T2 {9 w  ^" O8 L6 b
[ 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.' [) U' F& g2 n, P2 L- M1 Z% K
8 d8 }0 H: l3 \: c& Y( a* o; D& q
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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