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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:' ~1 Q5 n4 ~9 ]3 Y) w7 x# R. C( Y; A
to do-business . d* [- x$ w' G
rt random 360
5 n$ O8 b. l, G4 K7 l) a fd 1
8 f7 _- a7 B$ U1 p ifelse(other turtles-here != nobody)[
/ d% j) r: \1 r4 I) w- j# T( d* m   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./ A" [) x' ^  P1 t4 J" U2 x5 Z5 b( x
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , g' R+ _( G% z+ h" K0 D
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 [  m1 z9 O$ P2 I( K6 E) c  z  ^3 \5 S
   set [trade-record-one-len] of self length [trade-record-one] of self1 x1 g% ]8 v) Z7 Q& _  Y6 E# h
   set trade-record-current( list (timer) (random money-upper-limit))8 M2 Q% o4 {9 _% Z! |* s

* R. [2 S: K% Z问题的提示如下:& ^& Q6 I! L$ Y4 q" K

" u9 ]  Y! G& N& {  w4 C- M2 rerror while turtle 50 running OF in procedure DO-BUSINESS( d1 O4 T2 N, ^  a  w' f, h
  called by procedure GO( J; X' f+ K/ F  Y9 `
OF expected input to be a turtle agentset or turtle but got NOBODY instead.- P) J, _! F4 X1 M- {
(halted running of go)
& |8 ]0 W4 r) G3 }* y1 J
. N/ G; a0 r# y- [" H  f: h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~~, K. L' g/ U' s- P7 ?
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' l. P& }! _8 t+ U0 C0 J: i6 j! b
globals[/ s* U8 d" R' G: e, H
xmax
: G: c$ J( n+ j" N4 H; dymax. z& C2 g3 S7 L* r1 X
global-reputation-list( Z. a* C) @5 {6 W- Z# z

0 O1 g8 ~2 n& E; d( o! z9 v;;
每一个turtle的全局声誉都存在此LIST
' d5 n6 \+ v1 X$ l+ E$ ~" o& ?# `! icredibility-list; P; X( `7 z* ~( f  S7 ~' l
;;
每一个turtle的评价可信度; F$ \4 }' Q& _9 F7 {/ _
honest-service) P9 N( E: p$ c  ~1 l* H8 ^
unhonest-service3 s; @3 N9 p, g( E0 b
oscillation, ^7 j8 }4 g: l( Q2 i
rand-dynamic5 J5 g, }4 E' j% R
]3 r4 r6 c# F; p" K4 C" i$ V1 ^

( l2 c1 }; s; k/ ?turtles-own[
% _) ^6 ~! \1 J' ^trade-record-all
: R4 N6 A. q4 v* x  e;;a list of lists,
trade-record-one组成7 U: [! }- a- x! n( r
trade-record-one
4 y; v" V" o* C+ x;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( S9 u; O0 ^" V6 ?

) q3 }3 t8 v% m# C( S* };;[
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]]
0 K2 q5 I( I1 F1 p$ v; i+ w; X; T8 ?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]) c2 o  C- l& i& Z5 @
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list9 s/ f; z7 R" L7 b
neighbor-total5 V' {( N: q7 r; Y' o8 |
;;
记录该turtle的邻居节点的数目
# M8 C  _1 ~( q- l4 F- P/ m. utrade-time
4 t( T' G) U, y4 P  ^0 A* z4 Y4 T) G5 q, ~;;
当前发生交易的turtle的交易时间
, S- ^- {7 J; q. `4 d: T  u# mappraise-give9 [  o0 H9 r8 \# s& j% Q$ n
;;
当前发生交易时给出的评价! j9 c# R6 i) u
appraise-receive. f5 G; Z: v5 {  e0 h0 h  m
;;
当前发生交易时收到的评价
1 l% M0 W" H* k8 L& kappraise-time
6 {% F! s5 C" j3 S8 R;;
当前发生交易时的评价时间+ w$ x' m2 G4 ^# o# T5 f& r
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
# K, H, n0 U( qtrade-times-total: H' |$ z- F8 K' ^
;;
与当前turtle的交易总次数
: n3 n5 X* R& |3 y% _trade-money-total0 \) }: Q. a8 G' ?* h: u6 Y$ E; i! r
;;
与当前turtle的交易总金额
, q( n) r/ s! c* |1 C5 e$ I9 K( o6 plocal-reputation
/ d# q% c$ t4 G4 `  _0 jglobal-reputation% y! P! k* A; ?: u) p
credibility3 n6 L8 n% U6 O/ d% P  A
;;
评价可信度,每次交易后都需要更新
+ P% U& B/ X* s' A0 p5 c9 [4 hcredibility-all3 u, p1 p2 B# n7 L! a( u6 @8 A
;;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5 Z: r+ g' M" |1 k  F# k

  D. e1 A& ^& l9 l;;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
- N$ C% F/ o6 i! `7 @' Vcredibility-one
/ w5 O- u/ T: W8 z9 y, y;;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: [6 S3 U3 q7 _) ^, y0 L
global-proportion# U5 I; `  f! Y. \+ K
customer
# l& Q9 ^0 V: w; X2 z+ a  Wcustomer-no
4 M$ u1 r9 A( ]1 \$ W/ p# d) Strust-ok# Y5 s# E' e# R$ q9 E( o
trade-record-one-len;;trade-record-one的长度
5 ^$ k1 ~4 Z! Z2 J1 s8 y6 g% Q9 N]
3 q+ V( y' S: g4 l/ s: C$ n* z( I4 ?& U' S& }. U4 e' }0 V- l0 R
;;setup procedure
% P, a. X2 J, v' V
2 D4 _% h; G( K: R1 L  z" R9 x6 gto setup$ V" x+ t" E3 w5 ^6 G
$ e/ f8 V# R* P) q4 ?
ca

# K9 D% H* A1 p/ I6 I
# j2 a$ U$ A; v! s! T0 Minitialize-settings

# r) p( q" w9 U% Q8 [4 ?9 C
# y' d, z' u7 U: \  D3 Kcrt people [setup-turtles]
- p% d/ k' k$ y+ h, Z/ v8 ]
7 ]/ c8 v% w8 U0 U* C  [" P: b/ Q6 }
reset-timer
0 `6 B4 m$ s+ D& ^3 C& _

" F* j" f( e/ Epoll-class

# F7 F6 E( j# b* t/ h* l, b3 x# e2 G9 [
setup-plots
3 z3 ]) \* l  T( g$ N
0 a% G9 R( s7 H% E+ p2 Y
do-plots

0 Y2 u4 p' W9 I" \) R" ?6 aend
  z4 P' q2 T) V3 X; X
% o# n/ c7 ~. F' M) m5 n# Wto initialize-settings7 _4 A, _( B9 t' ~- D+ Y% Q

2 R5 ^+ ^# x% }/ F% }/ P* ?' f" Xset global-reputation-list []
. {- L" L/ u( L* @6 t  {

. q* A7 Z! U- A# K8 m, ^$ @. j% bset credibility-list n-values people [0.5]

6 Q. L! i1 K. j3 q! P. N$ }( k! K# w+ Y6 o/ d  L
set honest-service 0

& n( v& h7 x( G1 J8 o8 y0 Y0 I
: Q, ^$ }5 N+ [. T- g( Jset unhonest-service 0

3 X1 m3 P. ]! R! W+ Y, c& f
( m; E% ?: n4 \set oscillation 0

& P* o& g; ~- v# x, D7 x
8 J% X8 ~* d& H6 B: ]& Oset rand-dynamic 0

+ @/ M# T2 Q4 s, l+ C  zend/ f+ T! T0 q4 w8 q. u
4 W% c0 K% V- z4 k& G% r! d" v
to setup-turtles
% k" c+ x* f( v$ |set shape "person"- H! C5 V" W4 j$ k
setxy random-xcor random-ycor
0 A  J2 Z6 {( a% i# Q: Kset trade-record-one []. W) Z0 b6 s6 y' {: M0 l3 h
$ r1 l3 [; O$ a+ i
set trade-record-all n-values people [(list (? + 1) 0 0)] 6 r) A! x+ t+ W' p* l5 N4 B
' r+ |# }% V7 }1 I, S
set trade-record-current []0 W( x* o3 ^( I7 w( H5 ]; \
set credibility-receive []
" e. `, {( \& s- b( X  Oset local-reputation 0.5
: L- ~7 ^4 X% a* x  f7 |set neighbor-total 0
' y3 u# G. [: E3 s+ o# M* Wset trade-times-total 02 X, m9 `6 `0 e! [& ?
set trade-money-total 0
* X6 p# G; ^9 [' v0 i& kset customer nobody9 n$ U0 W( c6 Y/ C( n$ M' K' l# L5 r' K
set credibility-all n-values people [creat-credibility]
- \+ u2 b+ {1 `+ C. O4 [set credibility n-values people [-1]
  W' G  A0 F8 K% ?) S4 zget-color
! f( m- g0 p: l& j  w6 U

+ L2 }9 W' s; eend
# z' [, P" _4 k9 W/ P' B" \9 t! k: W" l" f( m, e, _: t
to-report creat-credibility+ _) [6 T- R5 d; x3 H/ Y& e7 X  y1 S
report n-values people [0.5]2 Z4 a  W; m3 G& Y$ ~
end
7 t2 s- H/ p, e6 n' V9 I. D2 t7 `9 g7 u* r" Q
to setup-plots
, ^) J8 R, K+ J) T: p5 d. f/ q+ q0 J5 i  F
set xmax 30

3 y% J6 b" p/ w! k0 o. B+ V5 I( v' h# l! g9 C
set ymax 1.0

1 Q$ A8 N0 B7 G7 ]( [% U7 Y5 D7 a
. j" E* j8 a$ m4 W. S1 O, }clear-all-plots

6 q  U$ p. [2 W% n$ D  f' J. n+ f8 k: s: |  ?! K& n
setup-plot1
/ I( O# {) q' t8 e% F

% F( F4 }* U2 w8 P, F- bsetup-plot2

8 S: j+ M: x( C5 _3 J2 X9 f4 L* W& z* A5 x+ r1 H3 `, N( w
setup-plot3

& K1 z0 _* B/ v; I$ G7 M0 Gend
1 F0 E, f1 i$ s7 _! X* ~  g
* t) Z  L& Y. j9 ~( L7 ?  i$ \2 ]* W;;run time procedures' S  Z: n3 l5 e' M4 `

5 k7 m* y4 e$ a' r+ ~to go9 G& [6 C) ^) ?! y

5 ], l* N" O# ~ask turtles [do-business]
" F4 s* L2 g7 h! g$ x, N9 R' k: J
end0 b( a! I0 F6 }/ y& T

/ V2 d1 {3 i0 f6 K* h% P* S  ]to do-business 4 |2 P. p" v. X

, ~# ]% L% u. w. I$ F. d1 X9 y0 O: }; f) P- p. l5 c
rt random 360
2 B8 A  [- G8 ~4 r# W3 ]
; G( Z$ G9 M+ c/ m  z2 G
fd 1
" X% P9 |' v) C  R  g. \

" o  C% s$ }7 I! U: ]ifelse(other turtles-here != nobody)[

& u* M0 w% O* y( b4 ?$ X8 |! M1 S9 `+ ]! n4 A9 r( s6 t
set customer one-of other turtles-here
4 h7 _% r. e% U, G* |$ W+ \

( G7 \+ V0 J1 A% g% K' W;; set [customer] of customer myself

9 {0 \: F4 _: s) Z8 l+ r$ G" \0 `$ W; {+ k
set [trade-record-one] of self item (([who] of customer) - 1)+ U! n6 k& I, _  ~3 p# d6 h
[trade-record-all]of self" O$ D: W7 D" Z1 H! s
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 M- u1 J$ |# z6 g: s
; y8 \1 M3 q/ ~7 E1 ~$ I
set [trade-record-one] of customer item (([who] of self) - 1)
9 N' y- f7 n( }0 E4 W' X[trade-record-all]of customer
. j1 ]. Z- A; U9 V2 K* j. N: n2 Y1 @/ C

: k# W# \& Y4 x6 o" p  aset [trade-record-one-len] of self length [trade-record-one] of self

# [0 D& J1 H6 Z9 q* y" {5 x3 z& k3 a
set trade-record-current( list (timer) (random money-upper-limit))
. O+ q1 S, O" R5 R$ B; Z' N
# \5 |0 J- L% j
ask self [do-trust]5 X! D5 x/ B/ Z2 E; T6 U
;;
先求ij的信任度* i9 L* e7 `& j7 w" X* j
' J3 J# D& y# d& a: L7 z( b7 M9 I% |* |
if ([trust-ok] of self)+ ]& H' o* H' q' \6 Y( i
;;
根据ij的信任度来决定是否与j进行交易[
0 L6 i/ r/ a9 v: ?6 @* u2 i. Iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
3 `* ~3 M* U+ W) d0 s9 j* t, D( f, s) Q* g9 M
[
$ I% T. d5 U- n' {$ M  Z1 A% A4 s

8 K1 |4 m3 k7 Ndo-trade

. `- X( P. y" _- Z- f4 H3 B( I3 U: [6 |) T- |2 s  Q8 T: R8 G- ?
update-credibility-ijl
: `0 U; q7 X1 m: u6 A

+ q. P2 F/ `. d: f/ `6 Kupdate-credibility-list
" U/ I4 x7 U, x( D6 W; b
$ p8 i% m0 ~2 J% ]  s
9 Z, p3 \* ^' O. [  g) `
update-global-reputation-list

4 W- q( l8 Y1 @$ m3 [! j/ B' d8 `. s4 l; H, ?* V
poll-class
' v8 ?5 X5 ^7 A

' _: P' B; Z- M$ Z4 aget-color
, x2 m4 W) @% s2 O7 Q

3 Z, S# M" h( S& f]]8 m! w! p: h' v7 }7 V1 d

+ e8 }2 m) k' o- I& E;;
如果所得的信任度满足条件,则进行交易$ d% {3 N/ B  d7 S9 w8 X1 O

! h+ ]# J/ H: B$ D[
, `1 J0 @. x9 g" J; Q! Q

2 N- X$ H% C& }- j1 ?rt random 360

6 m: s/ h8 m' B8 A+ ]
) X  o2 e, z+ O( Gfd 1

7 y8 {9 r: S2 u  T) f7 w- w0 R3 k) U- Y# a, B& _1 g
]
% b8 X( A, t7 C
* D. |  N$ p( \& I) M
end

5 Y9 T6 x+ Q4 J1 A3 M# n; f! z6 B$ K) B9 Y
to do-trust
" Z" M; ~! ?% wset trust-ok False7 p* L9 L3 ]' U8 S5 S% B* e
. F" Z$ c0 f6 k6 e9 A

+ s" Q9 A: m8 R% Slet max-trade-times 0# d( p) E) Y9 W* d, q$ ]
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 m2 F3 d; G9 @! k$ vlet max-trade-money 0
' j- {/ C5 j* l# n8 W# W  sforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 p+ c. m1 v* L1 S" o* D8 H9 X
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); R/ H0 d1 c8 l4 `

7 A( Y1 j& C& p0 g& O6 ]2 `

2 ~) M/ I2 c* k( {! A+ ]6 Q" V0 rget-global-proportion$ q+ d. [1 s" ]/ T$ H
let trust-value
6 |, b; j. }# U- Clocal-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: S9 E1 n7 q& S! ~! H
if(trust-value > trade-trust-value)) L# M$ Z9 b& s. R
[set trust-ok true]
  T" n* k* Y& P6 h6 Tend
. f7 ?8 o- @5 j7 N! D
, K! A4 N* l$ l  e: Bto get-global-proportion
" y$ G1 w6 M' u( `: c9 P0 S, uifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
) A: @% v# X4 P( d: _[set global-proportion 0]
3 |8 C9 f! Q: N[let i 0. v7 m6 b0 ~1 I9 ]( z$ k* y- l
let sum-money 0" r8 m! N* ]' M1 u) E; ?
while[ i < people]
2 ~+ w4 _5 ?' h1 G6 B7 r4 r/ ][
( n. {5 J. b* U9 `' Pif( length (item i% v- S( {4 x, j. M
[trade-record-all] of customer) > 3 )
# _8 q: l& o3 e/ {1 f( n6 \
[
0 M1 m. ]/ p7 @% h, oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- }4 b& d1 d4 c]
6 h+ W$ j4 V  r]2 H: B. U4 z5 j$ Y1 g9 n
let j 0% t9 b: d) J- m9 R: a+ ]1 G
let note 05 G* d  E2 U6 I( U
while[ j < people]
  a* e) }7 d% G: z* h! e$ B[
4 P: k4 ~" m1 h: p6 _- kif( length (item i1 q, ]. d  K3 @4 l- Y: h* J
[trade-record-all] of customer) > 3 )

: l+ G/ e$ k" y. \1 Z[4 ], Q  {! _, I' m4 v1 _
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# @) h+ U5 i, n2 s- r" s[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. p$ i* ~, e: |0 r2 ?# Z9 e[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& p' o% ]- L2 L; o" c]# z  i5 n. P1 q+ D
]+ b6 i! b& u; t5 N/ E
set global-proportion note
% s$ x, w4 \0 l]
* m+ F3 R- R7 u2 h% u  yend+ r: r# K6 N! A0 m

  V4 h) _( |, `' bto do-trade
' {( `, y* P" |! l; Z;;
这个过程实际上是给双方作出评价的过程
+ D* Y7 h" d- kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ t6 x" c. j2 Y0 q" g9 Kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) i3 F- {% i4 v' K% m6 gset trade-record-current lput(timer) trade-record-current$ b- w4 p7 A' N( |6 c+ t4 I
;;
评价时间8 h( l& Z! q, W1 X0 j) e* T3 q9 C8 ]
ask myself [4 U3 ~- z7 R8 ~4 ?% n) |6 `& M
update-local-reputation* M2 n0 u4 t1 V1 f( H" V0 |: n
set trade-record-current lput([local-reputation] of myself) trade-record-current
; I  j  m: V& _8 Z]& X2 }) j# _7 y, V, y4 `
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 D4 s7 {6 D* O5 i5 R  d- N2 L4 f;;
将此次交易的记录加入到trade-record-one: i/ |3 d( z" ]5 S/ p$ e
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! A& @2 F; F# p
let note (item 2 trade-record-current )
4 }1 M. q. b( R6 W0 vset trade-record-current
( @) k, j! ^2 k6 C. l(replace-item 2 trade-record-current (item 3 trade-record-current))
& v1 ]1 W, r+ I1 I( u2 Z% G
set trade-record-current
7 C0 w+ i5 k+ ?, i(replace-item 3 trade-record-current note)
8 r5 g$ Z* g; ?6 {1 P
4 H  a( M1 Z. ^

, ]& g( M! m5 ^6 l) Y7 Fask customer [" y4 P+ \$ h% z; h
update-local-reputation- D  e5 r5 @$ Z# T5 l
set trade-record-current
* k  C: B) ~+ m6 L3 Q* c(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

/ W( L" I4 I+ D6 T5 o) ?6 Q7 {]/ f/ ?; p3 @! M- m2 K7 B

, j' S! m' Q9 r3 u% j6 y

9 `, w( w1 F9 D# X* _set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. m( X& p6 L& `! Q

& V. C5 u  V; a& W4 S! Pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
) w% ]" [4 R* N  v+ Z- W;;
将此次交易的记录加入到customertrade-record-all
8 l; Q3 Y) n& j3 ^end
9 y+ T2 A. j; t% s1 Y' x. L$ }/ O! M
to update-local-reputation
5 F" H1 P$ F) N7 O1 c2 \set [trade-record-one-len] of myself length [trade-record-one] of myself, U- N! d! {  [9 N* n* f. s

9 q4 \1 i. n3 }( T& X( A+ F/ ?8 O# |, [7 J; ~4 ^" ?1 c
;;if [trade-record-one-len] of myself > 3
* E: h: I  a* H6 T* B) _$ c+ `% R
update-neighbor-total
$ J" {/ ~7 S8 n7 [9 L;;
更新邻居节点的数目,在此进行( b/ h% A$ A* e; r1 `( B0 K
let i 3
0 d4 c, C+ R% [let sum-time 0  v3 a1 A; m  P6 U. V7 z2 E! X* u" b, {
while[i < [trade-record-one-len] of myself]
6 f/ n6 h* s, i3 h9 A[
8 p, u& ~9 c% @8 x/ R5 @" dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 n7 n. }0 q% O
set i
0 y- O2 X! _& E+ R# D* H2 l( i + 1)
0 ]4 Z! Y; b9 y
]
% B. c& u: y3 x% f7 Z% u- V/ w, _let j 3' M" q' D3 T- [" j6 o
let sum-money 0$ h- }0 X9 e2 j
while[j < [trade-record-one-len] of myself]
- w7 [5 F- S3 Y# O0 O[. R) ?  a- K( I
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)
0 w9 h" L0 ^% mset j: o3 i# c5 P/ n* c- O1 C/ l! `
( j + 1)

6 r" \5 {1 y) O9 h]1 }. N$ f' c6 g; P# }0 `  D
let k 3$ `  _. D, G' t
let power 0; M: {: D+ z  a% K. N& i& q* V% Q
let local 0
% H; l. ^1 _' U* K0 \while [k <[trade-record-one-len] of myself]& F$ q2 H- C  \' W* I: Z8 v
[  r8 }/ |, {) 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) ; ?7 i; ]  R7 v2 v- k1 G) M
set k (k + 1)
- O& c" v/ L7 t' k* b; n* x4 ]]
  O3 ~4 C- c( v, uset [local-reputation] of myself (local)& s- q) k8 U: T" w. u5 @+ R0 v! u
end, \& ^7 \) i: G' ^$ r
8 S+ b" r. T" y5 J; @
to update-neighbor-total
1 i! T5 g3 n3 y! E0 N7 |/ A/ G/ t, P
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# f) Y4 q4 k% h1 B

8 C2 r6 g2 ]& R
* e* a5 R# f! n( b/ d4 K
end; ]/ m% n8 g) t

5 m9 h' R2 Y* ?; ~# D" u9 nto update-credibility-ijl ' I; q7 _: W: r" {! S

7 S+ O( q, P& w" R- _8 k- e;;
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。
; P1 {: [( \9 Q% w. Alet l 0  Y! Z8 i! z9 A
while[ l < people ]
0 D% Z* }' E5 i! D1 ?; ^;;
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
4 o7 B2 ~3 {9 U[, J5 l" G! F9 X4 z& r
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
- t8 k( i% k6 m$ R, x3 Pif (trade-record-one-j-l-len > 3): |. `% O5 B7 E* 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
: K/ j4 l' L) glet i 31 o" I9 l$ k* G' c9 f- N" x
let sum-time 03 U3 e9 u5 ]# A1 ]/ @
while[i < trade-record-one-len]6 H4 |/ |1 {: v+ C
[
6 Z! I! G; z0 @set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 d5 O0 V5 M: L- _( Sset i
# I6 d. X$ ]1 }5 C2 c/ m. D( i + 1)

7 A' a: @0 v  d1 S]
9 {6 g2 U% r4 `" \let credibility-i-j-l 00 n! U2 [) K$ f9 `$ u* [! y7 i
;;i
评价(jjl的评价)) ]% o6 ^; S. @( p' k, d. w
let j 3* e8 N6 v& ~! |# ]
let k 4
$ q7 w8 g) V5 i& J0 Ywhile[j < trade-record-one-len]; r: Z- K$ y$ v2 P% ]4 M
[
# R: U& g$ f. P$ C: h% Nwhile [((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$ Y9 R0 C$ M- n1 o4 `+ F
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)* u, p( ~. Q, C, ^' ^5 \' }! ^
set j6 R# X4 j' I# Y9 N8 Q# ?; @: y
( j + 1)
, Y  u) |* e  W5 b- Y' h: u- }
]
# p/ J3 ?% p: W& K7 L) Gset [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 ))
; a$ b; h+ u7 h* C& ], w
. P4 V  W8 _" Q

" R9 I* n$ z2 x! z2 {, llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): U3 }9 \  D( ~+ E
;;
及时更新il的评价质量的评价
0 b! `4 i7 V' c  G* gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) K/ j9 [  [6 s  I* _; Nset l (l + 1)
7 O3 n+ q/ o  N& c- b6 T6 t]# C- a) n9 s! q# i
end* w/ H6 l% U; `4 Q/ }) S
- G, ^3 G( ^0 {' a( @8 y8 a
to update-credibility-list/ D3 }0 T, L9 N
let i 0. x/ R/ L* j4 f: P1 W% h5 S
while[i < people]& ^+ @9 s1 H1 W$ R# Z7 }
[" J* P% W8 G, Q7 e
let j 0
8 Y1 |& D" T7 N; I9 o( o, f0 zlet note 0
3 I# R8 r8 M  z7 Jlet k 0
8 F3 q5 I  \. v3 S: l' ?& R# B;;
计作出过评价的邻居节点的数目
. w5 N: c6 ~; Lwhile[j < people]
  ?1 ~, X/ i5 S! c  ]2 w# O* u! p: A4 g[
6 n5 j, H4 j! d& p# T; S5 Hif (item j( [credibility] of turtle (i + 1)) != -1)! K: j, Z4 I, E) L
;;
判断是否给本turtle的评价质量做出过评价的节点* l3 u, n. n7 p! Y& f0 n) P3 {! l
[set note (note + item j ([credibility]of turtle (i + 1)))! ]$ X  t* r+ s0 u) c7 R, D
;;*(exp (-(people - 2)))/(people - 2))]
5 s0 q  v- z, i* g  t2 j
set k (k + 1)/ C5 F1 O3 o2 g- O! R  ]; ]
]
; `; y( ^3 J" W% z, g& @/ Rset j (j + 1)/ A8 Z9 s* R$ K3 p* |3 C
]+ r6 k" @. s. c( n2 p% @- b
set note (note *(exp (- (1 / k)))/ k)
! a' d0 `& J0 I4 a) aset credibility-list (replace-item i credibility-list note)2 G; A. q: A, c
set i (i + 1)# Y5 t8 e+ ?; \5 ?, w9 D7 ?
]
; z9 X4 a) r4 u+ d  mend
- ~, z/ p2 J. w; Z; y! U/ ]5 W, l0 @. l9 X9 I" R8 F
to update-global-reputation-list
, }9 F$ i3 ~; o/ r* z2 \let j 0- x$ a  B; m) V5 G* v
while[j < people]+ u# R: ~$ \- A4 Y
[
2 e3 B' T- H5 y0 H& M+ `. R- l- y  ^) }" dlet new 0
/ X. C$ J" D# V: F/ K& I;;
暂存新的一个全局声誉  j; L; X7 g7 {: ]1 _
let i 0
, E4 L: Q& B$ [) V1 V' S4 Wlet sum-money 08 |+ U) K& v& w" i
let credibility-money 0
- G9 ]7 Y3 F4 L& C7 N5 U% B* Lwhile [i < people]' A' A' z6 y; p4 {" n! T
[" D5 e$ `: Q: Y  N3 _$ F; w9 a2 J
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( O* ]  ~( l: o! s3 Hset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' v6 f0 c& O1 n
set i (i + 1)' A0 T) F4 D, m7 ?0 Y
]
& D% j2 m+ F! c! N0 [4 C" X9 U; Ilet k 05 s8 x, r# ]' ?) _4 g  D
let new1 0
1 \* B5 X# n- M  ~' D' y$ ~) ^+ Ywhile [k < people]( w! P& r* H+ ]. C: f( F3 j
[
4 w( S; r. O: t. L7 x3 Oset 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)+ d  W) q/ R7 x7 \4 @
set k (k + 1)7 |3 Z, T: l+ y- e. s2 z( X
]2 c# j( a- _  p$ {/ t) S7 p) [
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
5 P1 {) Z; i; _) j+ _7 M* iset global-reputation-list (replace-item j global-reputation-list new)2 d" A; Z) M% g% p5 H
set j (j + 1)/ F  _; f5 D6 f- @: @
]# u) h# G" U9 Y+ H% S! w: N/ ~
end( j! T8 g, b4 R! X5 k" S8 }

" U* o$ ?8 e$ H/ c3 G0 N" o2 j
7 [' [4 A* i0 `0 o7 |; [# Y
! t1 Z* e( L: N+ M' A1 E% Wto get-color0 v- [& `5 n7 h+ |( Z. D

* }  ]( H$ _6 @5 E6 G: qset color blue

: a0 Z! @# R3 a- s+ y- r" iend
  `4 p2 |$ {9 N3 ~% v5 U4 t2 f# m, B0 Y1 _" `9 a; P" F* G
to poll-class' M3 ]9 h1 J6 A( x
end
+ j+ l2 V# b. n! P' N* x* t+ p7 y
to setup-plot1
, y4 f2 @8 t( |" Q) R0 Q* Q
, a: l$ [0 n4 sset-current-plot "Trends-of-Local-reputation"

0 r. |- H2 U( h5 Q2 C6 ]5 S+ e  y3 `) r6 {7 q
set-plot-x-range 0 xmax
8 S' F# s" k9 e2 }( w
1 r2 m" C. {. I" o8 x- P
set-plot-y-range 0.0 ymax

8 o8 `( {1 U+ K5 F; V3 G7 Xend: t- N3 E7 N/ f% t

" |; h+ U* Z, x1 P2 `to setup-plot26 H. t) `9 t& a$ O/ |# ~

" Z" v1 j* V6 q# m. v+ g/ L; fset-current-plot "Trends-of-global-reputation"

9 N% L+ y5 g+ y: Z5 _
' _+ \0 Z2 P4 qset-plot-x-range 0 xmax

# a1 E0 Z: z0 Y6 M" ?  I; E0 U
5 ^+ V# m! {0 H; wset-plot-y-range 0.0 ymax

& y" W% S& r  _' r5 N4 U* Fend% U4 H! i3 y4 U( M; d/ @

4 @4 I0 V, H' E# L3 T. I" hto setup-plot3
% {  j5 x' \" v- S& l  I0 p' R* W, Q
' S+ u, }( `6 n4 C: w: zset-current-plot "Trends-of-credibility"
; @( P4 c( F( V

* K! B3 [4 h) b  a5 J9 h+ \; Kset-plot-x-range 0 xmax
& A" O/ b9 C& {& k; O* c% S

3 f& c4 Q9 h) ^  Mset-plot-y-range 0.0 ymax

  K, C7 \% q5 f0 b0 Eend* k1 o% \3 C6 V, G* j! v# ~9 Y( q( Z& K

1 h( Z% k9 g6 y- Mto do-plots5 B9 v2 I. R& Z# K0 ~
set-current-plot "Trends-of-Local-reputation"
4 u% _9 _) c; g: f+ q; \+ c* rset-current-plot-pen "Honest service"
% ]4 ~) c: g5 Y, gend
2 o- L- a% r" N1 {
6 w& A& [/ r8 ?8 |) {[ 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.) H% }* X" m3 e7 _2 q$ i6 o6 e

# q/ ]: @' H3 a" i5 ]8 u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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