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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:
/ h9 ~- X* h2 R/ B! Y5 X4 O0 ~to do-business 3 b3 h  @. _' f! r9 O. v
rt random 360
8 D5 O) c; f7 h) O( E7 u: O, ~ fd 1
+ Q1 G5 M6 J8 p9 W/ g ifelse(other turtles-here != nobody)[
0 }! `9 w% Z: ~& C   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.6 V. @, X. c/ r$ R1 u
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) H3 S* P' \: B   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; |1 }  P3 Y( Z  f& h! H' k2 O
   set [trade-record-one-len] of self length [trade-record-one] of self6 X+ X: O7 i; E* W- c2 V5 X
   set trade-record-current( list (timer) (random money-upper-limit))* @! d. l* N8 }3 j+ V! v# j

0 J. Z4 G3 I" }( U+ K7 q/ ?1 V问题的提示如下:
5 c, W" S, s3 ?% Q! m$ r0 U6 L
' f1 C9 T6 G) D1 m. T3 F* q1 Y/ Oerror while turtle 50 running OF in procedure DO-BUSINESS3 M& K! S, i& T, A' l9 ^
  called by procedure GO) x% @% x7 U: _  Y( C, A
OF expected input to be a turtle agentset or turtle but got NOBODY instead.1 }% N, j2 n$ ?4 r6 f; U& H+ S
(halted running of go)
# h4 @) ^% H2 u: L/ H1 U" _! X* {$ \
4 }  o! z* U! f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~~
. f# O3 D# F" E: U+ _2 k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9 p$ A! f# ]' }+ p
globals[
: i/ k; A( G  Q# }' [, b# yxmax7 Y) r9 J5 I* [. m
ymax
" u! O* c, l8 n, qglobal-reputation-list
# }* u" A) q! d1 {9 v4 G+ |- _4 i  m3 S$ q8 N) G
;;
每一个turtle的全局声誉都存在此LIST- m0 ^; T# w# o, c# {
credibility-list) s1 `3 h" \: Z1 L
;;
每一个turtle的评价可信度
% s( b: Y0 F- C% C' U  _! Lhonest-service
4 N) m% [. J" @" Q# m, bunhonest-service
2 m$ Y7 M' j) V; ]4 N  G+ X5 Moscillation
& _5 o' X, c* C6 v' qrand-dynamic) d* E" {3 z# O9 N9 o* G, }+ R
]
5 l! T! F1 @0 S1 m% k9 M/ X7 L1 {# n6 j% {3 P$ ]
turtles-own[
1 b1 l* q, Y, Ztrade-record-all  U/ J8 K+ D  u
;;a list of lists,
trade-record-one组成4 e# ~6 N/ x; }+ G% T/ r
trade-record-one
3 E3 Z4 @( ^% @$ _;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ x& S& b2 K5 W" a  ]# O* Q5 p

, p5 q  L% ^) 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]]
$ U* U; f) T$ c, ]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]' K; U# g, C; v6 i
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list& x3 M' r7 w# ^8 Y4 q$ D+ K
neighbor-total
2 I6 z2 _5 g9 ?# A( I;;
记录该turtle的邻居节点的数目. i  H# i  e7 M; g
trade-time' r% s: B3 N" L! \+ r+ |6 i
;;
当前发生交易的turtle的交易时间) w0 U6 R! e  [1 R& W
appraise-give- [, m  r. B, n2 d: J+ t3 k
;;
当前发生交易时给出的评价
0 V0 y4 Y$ T# _1 aappraise-receive
  {. B+ A% [  w+ a# A;;
当前发生交易时收到的评价+ j7 E  B6 J( D/ `  l2 y
appraise-time
  l' z# b" u7 M0 z) d;;
当前发生交易时的评价时间
8 \, z% g- T: Z* J% ~3 \local-reputation-now;;此次交易后相对于对方turtle的局部声誉& N. [7 @5 A1 ?2 o- L
trade-times-total
7 q9 m' q! D& q9 Y2 ~;;
与当前turtle的交易总次数6 J/ _' U0 o# o0 N+ @, E; l0 E
trade-money-total
! T% X1 P6 H5 t6 x2 r;;
与当前turtle的交易总金额" z4 q* }; y" L, {7 |- a7 o3 J6 Y4 T
local-reputation
0 R0 J0 Y6 }, Eglobal-reputation
/ x: C& N& F: bcredibility7 l+ J+ @, N# W/ A: E3 H* f0 ~" v' Y
;;
评价可信度,每次交易后都需要更新& L( A: L6 s9 R0 {7 U
credibility-all; q% a( l5 v1 }8 @( w7 z
;;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3 O" e( t( }  U# h& W$ |" ^# l+ C& X
/ m6 G' S( Q2 g/ ?8 u1 q7 f) d
;;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0.53 m( \9 X$ g  P! u! ?
credibility-one
- a# G" q" j1 M  N;;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 q3 @% C) B8 ]3 |( c- Q& iglobal-proportion3 u" Y/ Y: H3 E$ y( T* i6 _
customer
2 G' R+ n+ m  d+ |( q+ v5 w8 Ncustomer-no. |$ x2 Z. x: v; [7 l* ]9 }$ E' T
trust-ok0 H& D, \$ i$ G" Q$ h
trade-record-one-len;;trade-record-one的长度5 d4 a* k! b3 G
]/ Y/ g% t1 B/ e: S- q
- g) b0 K6 l3 D% l' l
;;setup procedure
" N1 L, k% Y1 n4 R  F
# s/ T# M+ C% Y) H6 Hto setup
* m) j: L. K% f! A: U4 F1 G+ i3 O1 K
! y+ T! _3 o& e$ T) y5 rca

' `4 r2 h/ C! t. S
$ g8 Y7 D/ ]1 ninitialize-settings

5 @/ C( L3 D& W, o3 `. W9 g
; ^! K; A8 Q/ i; qcrt people [setup-turtles]
* E  p9 H$ X/ m  U! w9 ^
2 b2 z: c8 _% E$ {' Z/ D
reset-timer
1 l* I' H3 A' ]+ v
. ^7 E2 p& F/ @& ]" }0 h
poll-class
$ R7 J( T- W3 v% u4 J1 K3 c5 W

$ m- }7 W5 r) `0 c# x2 U: Z- B& u: N) lsetup-plots
" C; Q% D# Q3 d

& k  y3 \+ [- s; D  F5 G5 gdo-plots

( O/ d: |  w* G/ }2 jend
3 \& u! f' P% L
, G9 h7 Z  R* d( u3 @! bto initialize-settings
3 z' N' B* R8 z# Y
, g' F4 n/ D8 a2 }" B* y$ b# oset global-reputation-list []

0 b2 \7 x3 A% N' m1 r! D
2 m, j! D+ l9 eset credibility-list n-values people [0.5]
) h7 a7 q$ |. n$ j& F7 }

+ y+ D9 I& N% `set honest-service 0

& Z2 o; ?9 X1 t7 h) J" r, Y' e( h
4 \" Z6 m: R0 i6 @: r4 X  c, {( oset unhonest-service 0

( b# k- I! p( y% _* e, b! K& d
- z$ D: \: I: I) W/ R* I. zset oscillation 0

* i( R# d  x; \# \6 X' q4 w9 ^: Q5 M4 p$ C3 `4 s, e& e
set rand-dynamic 0

' P7 y5 L7 N. i! R/ cend! f5 s- J/ r: y" f- s- m1 o, r; f

- v* V5 `& R- Q4 Y4 bto setup-turtles
# |$ O2 J! @% M+ N+ T4 j  M: J5 D* i7 Sset shape "person"8 j& r: O$ S) }8 w2 `1 _- m
setxy random-xcor random-ycor$ q* M+ I2 f+ `9 b9 m- Q
set trade-record-one []
# I5 V/ u* K% p' h* O# i. P* d3 p
, i+ f! e, {' [" Y" v
set trade-record-all n-values people [(list (? + 1) 0 0)] ' i+ `, p  ~( z, P" t2 l, B) K

. z' }9 @  t  |( w' [  @$ X# f+ fset trade-record-current []5 C! H) E; P7 c; z
set credibility-receive []
9 _- H: q, O6 v$ W& k; Z" cset local-reputation 0.5
( O) r/ Y0 n0 \  N" c- hset neighbor-total 00 ^* \2 y" t: Z+ S  v
set trade-times-total 0" r- T+ D' O! X* n
set trade-money-total 0
! Y/ [4 o  Q% }9 R2 P# |! _set customer nobody# h$ L6 `* D5 X
set credibility-all n-values people [creat-credibility]
# M* ]3 ?4 w, v9 X  y+ D" Pset credibility n-values people [-1]/ f" F, q0 n, v; I
get-color' V/ O+ F% K- a# |# ~

$ F$ N1 R3 m( o9 L4 T/ Cend
. A9 ]8 U1 [1 M9 p  {) @; I" m. u  H# u4 K  m- b& f7 l7 ?
to-report creat-credibility1 L; `) x+ D9 k
report n-values people [0.5]
- S3 C  H" T6 F5 ?. Send5 {9 Q! I' l7 ^! d
0 T: Q4 f9 k: ~) Q" p
to setup-plots9 Y& g/ \- Z1 J2 B; f
8 W0 ?1 z8 P% |9 D2 I( L/ Y
set xmax 30
& x+ }- {  x# o' m# @5 Z

- G4 B9 l" n/ w6 Sset ymax 1.0

( b: O6 a$ H1 ?+ y4 [( J2 ^3 A& j3 i. \' k" r7 Q
clear-all-plots

: k  G* H2 U( W& P% v* {" A3 [
setup-plot1
9 b/ u- z" }+ o' P+ R5 M7 X
# c" o' {2 v6 R
setup-plot2

! W" d4 ]. ]7 a
' D' o* q$ z5 r2 ~( d3 ^& Ksetup-plot3

! V6 M3 p3 H* uend
/ [) E' c1 w! G$ k2 q3 n9 _5 i) m) t3 V" v( H. d- i
;;run time procedures
' @4 y9 n  u7 {, _5 u$ s) O% R8 E% p: m; G6 W
to go
9 Y- @7 K6 G$ U- i/ l
2 H6 K! ?4 K' [/ c# vask turtles [do-business]

) m. y& T0 N, y/ p# ~/ yend1 X- d1 v/ A8 q% X" d, M5 T
) B1 W+ q1 Q1 g+ b
to do-business
5 `( X) v: a1 r- g5 m

( Q% C8 L( `; Z2 U; k4 Z# R
9 f9 C* z2 o; P9 G1 xrt random 360
; s* w7 @0 `9 g0 [8 b7 R
, A7 \: O* |! W9 k0 N& Z" t
fd 1

0 @% ]3 }. c& m4 X: ]% {; o9 i, ^5 w/ B2 w# p6 x
ifelse(other turtles-here != nobody)[

+ |" y9 P$ o' \2 E
( a8 P( t( h  y# C& h% t$ mset customer one-of other turtles-here
( L+ y! F) z) }! D- p' W  X
5 j: p6 R5 D8 L- C9 k
;; set [customer] of customer myself
( A7 M/ s& p* r2 u2 p9 h
+ j; J) z9 |0 D( ^; V$ b
set [trade-record-one] of self item (([who] of customer) - 1)7 N6 T5 d0 y6 _1 Z$ H+ C! b$ D2 o
[trade-record-all]of self- X3 f0 F$ @; Y2 D
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 R1 v# t( Y% Z2 u; x* L* I2 m( r4 Y( {+ q( S
set [trade-record-one] of customer item (([who] of self) - 1)
! R1 R! ?2 }! u7 r/ Z0 }[trade-record-all]of customer

8 z# T& Y8 S& u6 k: x5 H$ _
) v+ e7 D. x7 B) hset [trade-record-one-len] of self length [trade-record-one] of self
# n3 `8 J0 g% I5 p' f& Y% F

& u4 I% U$ h' J$ o0 v$ z# sset trade-record-current( list (timer) (random money-upper-limit))
6 I( L: O) y" |
; O' \& W  M) L- o. K
ask self [do-trust]1 }( W1 ~: Q2 [* J
;;
先求ij的信任度6 I6 {  a3 p* [' F1 w
9 B0 N" }" K( Z1 t2 }- p% P+ D* D, F
if ([trust-ok] of self)  o5 F. F) u& X" l9 ^; B& a
;;
根据ij的信任度来决定是否与j进行交易[/ ?6 h( W; G- o/ ]. d7 m  d8 _' s
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
4 g7 u6 Z4 [/ Q8 L
% f5 ^; R+ @8 V$ E[

; p( _% F3 c- D' h' [
3 W, V& C4 T  q, Jdo-trade

8 V6 W3 c* Q/ _6 b' o# V7 X5 a7 r9 Z: V  t
update-credibility-ijl
  v* a8 ?2 ]  m; `! ]: i
$ z$ U4 u4 f, S% j4 }6 K
update-credibility-list
1 C/ H  ?, O$ c- t' Q
% p6 A. k; z/ {% [
$ Y- O9 O0 W7 D* o, A& {$ f
update-global-reputation-list

3 t4 t; X! [" j
! @" j/ u: N( Ypoll-class
; p. d+ ]6 {8 H( D3 ?  b/ b$ B" |
5 ~9 I( Q/ s$ V
get-color
& _) ^8 Z1 }/ ?* l

' ^7 e5 ^5 q& }3 i- v/ Z3 G]]( P' D0 u; K/ i7 o) w
$ C& p  x7 F4 g$ v7 d
;;
如果所得的信任度满足条件,则进行交易
5 W* q# j! r! J' t- s5 _- {' h5 B6 V6 A
[
% Q# z2 |, _' }6 L$ _
- a% v6 g! z& |8 }; W
rt random 360

+ r" q. A& Q# O! v$ i. Q" q& M1 ~1 |
fd 1
& B* V. \; a" w0 j/ i% A3 g2 r7 R6 g
7 V! e2 {3 u4 D. N
]
( ^9 r0 `9 q2 m" G! _( P
4 v0 U4 S1 e9 A$ F, `# l" u5 x
end

: D/ Q7 R  |+ B/ g* j% G/ Z! ]0 }
to do-trust - P; Y2 P: Q8 L- X; w
set trust-ok False
3 v- K% h! \3 T" D) W) q% ?/ z* _% E; Q- ?' {' ^5 S: W. O/ J  A' r  E
+ ~) \2 h' R# K  z/ `' I9 D- P
let max-trade-times 0
+ Z. x' t9 S9 n8 Q1 O0 xforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 I5 z, {: h  P6 |/ f$ a
let max-trade-money 0
* c. j' e6 B, U7 k8 N0 lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]/ ^0 U* Y% U2 v4 I& Z9 f) t/ E4 V
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
2 J( [2 m: p' Y1 n. d' ]
$ S8 D  |9 |1 }) x# s5 N. w' l/ w

7 \- x- R) d0 k1 }+ ?+ x/ Z* @get-global-proportion
$ R7 w. t) a" d1 q' Q6 [+ `let trust-value: c' ^4 f5 M8 M" d0 z
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)
& Y0 Z: Z6 Z$ [2 @
if(trust-value > trade-trust-value)
1 `1 t6 \1 R, c$ O: R[set trust-ok true]' o0 k6 \; v; r  x' \) R; R
end
4 n0 A3 n: X9 w4 y
5 O- Z% O3 [  z: f' B7 ^( E  |to get-global-proportion
5 X& @8 {& p& W6 ]% k" J3 D2 \- ]ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ O% P3 C6 f( Q[set global-proportion 0]
' l3 o) I- U( V[let i 0& e: l7 u! B. ?8 C( \  S
let sum-money 0/ L$ p' N3 M/ D* y/ X* k
while[ i < people]* X! ?: c- e* Y) p) g  T2 C
[5 r5 G' W# E' P2 y
if( length (item i7 G, U, z  q& h6 g
[trade-record-all] of customer) > 3 )

) z* G% k9 a. ?# S  o[3 S$ E8 P) `/ u+ @! p: L6 W+ A3 |
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 G1 k3 l; L: D3 U: o3 r6 Q]
* g8 r4 D: p" c& h8 i* S]+ x+ Z8 v6 E6 G4 R7 _" s
let j 0# B8 E8 J' b- s1 e6 G
let note 0
* v8 m7 w& {8 Ywhile[ j < people]9 r( ^$ G/ o) ?. i+ q5 [
[& g  P; j/ B$ I& e
if( length (item i
' y! u; P' r' @[trade-record-all] of customer) > 3 )
* |6 \: C: }9 s8 b0 Y
[
' u0 y! _! \: Y( r: A7 gifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
6 o% w) s6 a" V/ }[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]' M3 h% g9 R* _. z- D
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
. ~5 b3 y' D( z' {]. q5 w! W8 c1 l6 N
]
4 O0 x& U7 G; P6 |' C& nset global-proportion note
1 h" j" s- D6 x3 g]
# d% g6 P- ]8 {6 zend0 D. j6 j7 t, y4 C) l  Q

8 r7 l- B8 q0 h3 D+ z3 ito do-trade
1 K6 a* m4 m) P/ S! v;;
这个过程实际上是给双方作出评价的过程
9 s! h0 r: Q7 Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% M: s$ e8 N4 H; ?; }, Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价' k1 ~! ?: w  t/ p
set trade-record-current lput(timer) trade-record-current- C" W  R1 V$ h  j7 ^
;;
评价时间( M) p. U! b' ?
ask myself [
' i7 @  G" ]. S' H/ v+ Nupdate-local-reputation
5 w/ N% g& }4 B- z2 ?" w& Oset trade-record-current lput([local-reputation] of myself) trade-record-current
/ Q  B& K4 l  c+ u0 }# m/ V4 I]  c, T4 {0 E/ c
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ v  F. m- `4 H2 y' T8 a
;;
将此次交易的记录加入到trade-record-one
& N* z4 w/ I) r  j' Fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
( O9 c. M. Q& vlet note (item 2 trade-record-current )
: |( S, g# w! sset trade-record-current' ^7 h. C/ _$ l) q# C& Z
(replace-item 2 trade-record-current (item 3 trade-record-current))

) R* `# M! g- c0 j$ }8 ~5 i: xset trade-record-current+ q+ J* L1 w$ E/ K/ N( x3 ?
(replace-item 3 trade-record-current note)
1 Q6 X* ?/ y( r0 L( e: u( m" N! P8 E* D( F: g4 X# @) s
/ N9 Q$ z6 k# C9 S) h
ask customer [  {; K5 F. f; W4 y
update-local-reputation  \) s, U. p( o  B4 z
set trade-record-current& h, c3 W# r/ ~8 z5 \+ ^
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

# @, N% t0 }7 |3 c: x]
" R9 R& X( |/ q0 _9 Y0 N" I2 j+ r  [7 F2 }/ e+ y3 i4 w

2 ^, L7 J+ \& L& X8 ], ~& Tset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& M# }, k' @. [: I2 z- ?
# T/ ]! S) @1 W9 P
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! C! z# ~2 A3 b" _3 ]  }8 f  Y6 d! j
;;
将此次交易的记录加入到customertrade-record-all
* y7 i) m! l2 U+ v  Gend5 X- l! k$ L. x% I$ Y3 Z
: a1 Q6 p3 k6 |, M
to update-local-reputation
* T7 w, t* G* S6 eset [trade-record-one-len] of myself length [trade-record-one] of myself
, A* v- g1 |( c9 `, ^' d. \! Q0 u- E+ o: J2 V, j- s
- V% w& {. J! q' w& ?- V
;;if [trade-record-one-len] of myself > 3
" z$ e& I( q  h# z) _! p
update-neighbor-total
# l# G- w4 _5 _$ C8 i;;
更新邻居节点的数目,在此进行
8 k% K4 U; t6 n6 b2 h: ?let i 3" R4 S$ d% x2 e! m; ?
let sum-time 0
: I" K& \, X5 o; U- \while[i < [trade-record-one-len] of myself]
  w4 l- ?( |  h: D2 W[
! H2 r- ?' N! J! zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( ?+ [# d2 F. l/ A$ Z6 E$ o8 o1 V
set i
9 W, j  j' _, G0 p9 _( i + 1)
$ j: G2 y+ K2 @
]
- P/ c( y# d$ S4 V/ e6 Flet j 3( B* u$ H3 _& _6 [
let sum-money 0
' b" F2 F1 L" F0 G8 Dwhile[j < [trade-record-one-len] of myself]. |: t9 C; U8 g& ]& j1 ^' `
[
& [7 V' e. A9 s: ?. Jset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)4 _9 _; p. {+ |3 D; q, i
set j
6 @! v( |, L) I, h: r0 M( j + 1)
5 S+ ^; S' c9 ^; t
]) [4 t/ c, Z0 n2 J+ x/ f" ?
let k 3
9 U% h/ D2 o9 g5 H/ f! klet power 0
2 X* {7 M" O* Alet local 0$ I/ H3 B0 [9 [3 W
while [k <[trade-record-one-len] of myself]3 W% i+ X- j( C* j: }
[
5 x0 M! X- F$ G  X8 C$ Qset 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)
+ K7 \9 g/ E0 U' aset k (k + 1), q2 P. {  o- a0 R  Q) }* t
]3 \$ r9 y7 V* T+ _
set [local-reputation] of myself (local)' t/ c& P; B7 x, ~
end5 A9 B; ?" @) B# V, b
2 O3 o. j7 ^4 y( c
to update-neighbor-total3 O9 r/ _6 h; c- O$ ?' s
* E7 K+ ?' ]2 _4 c# Q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ y% B% l7 ?" ^
% b* f' [' ~, S" ?3 w! d
& ]- V4 @% w$ n: z
end; Q- W, k; @3 t# h7 V

& w' h7 `; O: U% J. x+ ^: }to update-credibility-ijl . B" {/ F$ b% s( _

, B! R7 x. H6 [% |0 V;;
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。
1 t' m) t& Y. Z+ c0 A( h: Klet l 0
  k7 A& d0 C! swhile[ l < people ], y4 P/ [# {+ O7 e: c# \+ q
;;
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
' V  n. n; v9 F/ c& R- O0 j3 A[
/ \/ o. H/ Y% b" s0 _let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' S6 I% ~. ?/ X0 U! Sif (trade-record-one-j-l-len > 3)
2 t; [0 `' D9 j[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
3 U0 R* ?9 P- B" w7 wlet i 3$ X& W/ {* ?: J& |7 h
let sum-time 0
3 Z, f) ?/ \( w* n) z1 Z2 Cwhile[i < trade-record-one-len]* w% H* V, L' w: m" F
[0 u' ]/ M  c* o( C- T7 v
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' [% ?$ B0 k9 _4 P0 A- M7 |7 e) j, ?
set i
- S* U/ c6 c; V4 c; T5 i( i + 1)
' m9 g9 I6 X8 a
]+ ]- S8 ^# a! }0 c  Z+ N* C1 R
let credibility-i-j-l 0
% N' _# P5 Z' V% k0 `5 O;;i
评价(jjl的评价)
7 F; g3 z: [- T$ x4 n  flet j 32 O( G* `7 {7 Q, n! L$ L7 K' X2 M  V
let k 4; F3 z& E$ B  E( T) r
while[j < trade-record-one-len]
7 ^5 A  d8 B; f& m) k, o& w- k[
! T# E$ s; @2 V7 c; @$ 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6 H! j: d) Q+ Z
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)2 G. |$ w( w% g4 L$ i: k' T+ W7 p) F
set j9 M( y. F' n' q4 K7 d' X, b
( j + 1)

6 @: k. {: s9 g* |3 []
9 _% r& I& {2 n# u4 p; ^0 H9 sset [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 ))
% u) ]2 L( Y( ]; m& a. F8 |- I1 N) B  C

# t; Q* F) w. {& P8 ~8 g" O+ glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ o! H3 W4 E$ @- Y
;;
及时更新il的评价质量的评价; N: e# i  w5 Y% w
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- s- i3 ^) o" L/ r4 h  Z7 ~# T( i+ Q) w
set l (l + 1)4 v* O" M5 D) e7 j" h
]
) s1 i& P3 I/ Wend- O8 {$ n/ ~! k) Z& z

& s0 c' S, B; \3 _2 d$ d% I4 x; {to update-credibility-list
$ r9 ?, D) o8 L: Plet i 0; d- V  d& H2 W% K4 u
while[i < people], y: `2 C6 [- u8 z6 S, j0 |* ?
[
/ m3 @& @, @( m4 llet j 0
+ A3 Y: e" l4 }1 w0 Y5 Qlet note 03 B& T- m/ K3 c9 U
let k 0, G  G/ L8 i8 X8 Q+ o
;;
计作出过评价的邻居节点的数目& O0 T% T! D* K
while[j < people]
2 F9 d  W9 [  n0 `6 A[) F* n1 P, H. d- ?/ m8 G, @
if (item j( [credibility] of turtle (i + 1)) != -1)0 _- m% A9 D1 @3 ~5 c
;;
判断是否给本turtle的评价质量做出过评价的节点
4 q! i3 Y2 J, M6 [: D/ X! o[set note (note + item j ([credibility]of turtle (i + 1)))2 y) |$ w9 c1 _& A, o2 f& {
;;*(exp (-(people - 2)))/(people - 2))]
3 v, N/ L/ l. d8 d' N
set k (k + 1)5 T+ n5 P" ?) |8 |/ Q. f
]
% `  i% k5 u1 c6 a0 Q& dset j (j + 1)
% R9 [* a' E0 U( l8 M. m]
/ R9 \. a$ z. @" Z8 |7 T& pset note (note *(exp (- (1 / k)))/ k)
' @9 b  V' W( O* W9 m- Q4 Cset credibility-list (replace-item i credibility-list note)9 F7 }/ F5 m! u5 P
set i (i + 1)
5 T9 X! b( m8 R]6 U" m( d! a0 `: F8 R
end! Q" _/ N: ?+ Q5 ]( ]
- E- c- _/ v& _8 h, j9 R% Y& d
to update-global-reputation-list
2 i# p9 f& l! R6 flet j 09 F, W! q6 R. \7 G; v* x
while[j < people]
5 R7 N( ?" P2 B5 j9 u4 ?6 a5 y[1 ?( N/ O0 j! E) S
let new 0
6 u: h& V7 u7 s; h: E. W# p, ~% G, O# f;;
暂存新的一个全局声誉
. _9 N* b5 S5 Y+ {3 @let i 0+ p1 m3 G/ d' B+ J
let sum-money 0
7 t$ P  ?" W0 D4 N& I9 Slet credibility-money 0+ S  X  x) }. r! H4 h. K1 e
while [i < people]
$ ^) F6 ]! L0 j3 @0 y[  M( g. C, |$ E% t- ?. M( w
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) |* D* ?' D2 X
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% Y  A2 @6 J1 s4 _set i (i + 1)) n, h! S2 s! x
]
* m# ]6 `- `  r% }let k 0
8 t, l( J1 a! w; j+ F% N8 Vlet new1 02 C4 V' i2 G7 D4 U
while [k < people]+ a8 V! p- e# N/ N* D3 p
[
: n" R  I: p0 B+ u( fset 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)
: E6 j3 D; ?1 }! }8 Zset k (k + 1)
3 q5 v& d2 l$ d0 m]
+ t( G. h8 n5 ^9 E, A* D1 P- dset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 @2 |4 e2 x( r8 F! b1 ^
set global-reputation-list (replace-item j global-reputation-list new)
$ @5 d0 Q/ s6 K; H9 jset j (j + 1)
% J) m4 r; Z% ^3 ~1 k]' p" j* w; v. ]4 L
end/ @$ J( k8 r& v
* W6 L2 Q! Y$ c  j6 J
+ V$ ]& j0 \6 \8 S2 Y
1 l  O1 u' ^( g' G! m2 M1 N
to get-color
0 E0 f" w/ j$ {0 y0 q. c) }6 s( U1 a3 A- H* Q& @
set color blue
( e5 N. Q5 ~- f3 x7 W6 R6 a
end
7 }% U" [5 r& t
; \! u- \; }" I& Lto poll-class- P- R( S* _+ k9 I& u
end
' O  }9 P* h0 Y1 x* m, O( ]+ T0 T, t7 O* G6 D
to setup-plot14 L! b7 K# r# ^. I( h

, l6 R0 h: ?' \' vset-current-plot "Trends-of-Local-reputation"
* E# }$ ~) }& m& A

% g% e% i) B2 lset-plot-x-range 0 xmax
- T) N  A3 k( t- {8 j. q/ q1 I
7 S8 f3 X& P1 r
set-plot-y-range 0.0 ymax

# J* X  O. \2 h( oend
$ `, O5 ?1 Q+ }3 v& ?$ s
* x5 \* O& o" k/ E% X) b, e" b4 lto setup-plot2
7 x* W3 v  {+ B# M: n( U) m: E- u8 j3 t2 t' [  w6 H! l
set-current-plot "Trends-of-global-reputation"

2 c7 _# s! @1 Y, U7 c9 s4 j+ D. P1 l/ R& H" \
set-plot-x-range 0 xmax
% U" m) h! B8 t& n$ \; [; d8 ~0 l
1 W5 @# o4 n1 M8 M# W  Z6 i
set-plot-y-range 0.0 ymax
+ {3 w' [1 J4 H0 H( C7 b
end
% o7 t# f8 J5 G$ ]3 H0 @0 t6 l+ I+ b: `
to setup-plot3/ u/ D$ x; e" z  o: n

* Z( ~+ u4 F0 h' E' y$ d6 ?( l9 D/ p5 Xset-current-plot "Trends-of-credibility"

$ g+ ^8 n7 r4 R+ I% h2 R- q  s0 J2 C" K7 j9 v# d
set-plot-x-range 0 xmax

6 V; J2 U: s& ~! K
- u( U8 t' u* F# G$ b6 Sset-plot-y-range 0.0 ymax

7 J- E2 Z6 f6 s0 J3 nend
: q, y6 s* \2 B* P2 q- I% r/ T
: x* o( h- H& ], g0 t' Ato do-plots# |! A- D3 k7 ]
set-current-plot "Trends-of-Local-reputation"/ C7 V2 S5 b, i7 Q
set-current-plot-pen "Honest service"
8 m% W" G8 j' J8 A  m6 ?1 Send
; Y- s$ f# L/ V. h
: p  b0 m' E( \/ ]% p4 }[ 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 r, f8 L8 C+ m- X, Z5 j1 N5 Y% a( O, x! T
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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