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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:
# Q% O8 D1 f- D. {& q+ tto do-business
# b0 a9 M1 m9 X rt random 360
( w9 \- ~. C& d& X fd 1( Y# u  j6 F% Q4 h- i
ifelse(other turtles-here != nobody)[
( g" N5 E5 Z9 L5 w$ E% ]2 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.
7 j; [5 o1 E5 z, m  ]   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    0 z  _9 {! ^0 A6 X" ]/ `. I
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 u# u& r* [/ G9 E; P   set [trade-record-one-len] of self length [trade-record-one] of self9 B. l- [8 \* j5 h! ~' z
   set trade-record-current( list (timer) (random money-upper-limit))& V% C3 }& \3 C+ z2 M3 ]

" A) x4 z7 ~; T3 X; `问题的提示如下:9 i+ I+ l  C% o8 F$ S7 P5 c
8 E* t$ l5 Q" V+ d$ ~, d" N  o; A, q
error while turtle 50 running OF in procedure DO-BUSINESS
/ X8 k+ W  n$ F0 Y. w: [2 j  called by procedure GO3 R$ E" q0 @+ i, V" l
OF expected input to be a turtle agentset or turtle but got NOBODY instead.- v* h! j" `2 q) |- m
(halted running of go)
8 _7 U$ ?# z7 p4 ~2 u! f- v- I
5 q) e7 G) G  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~~
; t$ {/ V: w4 J* z( 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
8 ]5 d- J) z! {  \globals[
/ G: O: s  |! }/ _/ zxmax
& o* d+ F$ q3 |. \. Bymax5 ^7 `- w' {) I8 f# I* @1 x, I
global-reputation-list' i$ E9 `& q- f# ^+ Q+ O
$ K  A, n4 s  _- h! m
;;
每一个turtle的全局声誉都存在此LIST1 G3 h$ H% R7 x: L
credibility-list4 H% M' V. O& N2 `( v
;;
每一个turtle的评价可信度; X9 _, ^5 X% r, K+ M5 e& x1 L
honest-service
' |# K0 y- [  B; K/ r% X2 n& xunhonest-service7 p8 j) ]) A9 a
oscillation
% S* X( Q' }1 h1 H  Zrand-dynamic# I- y) H/ T  a) D
]
" ^3 Q% O' E. n" L& \) j2 h- B, R* ^! m3 ^" q+ S
turtles-own[
" W# N! W2 R3 I6 ]trade-record-all1 d( d! F" s8 V9 ~% `3 r& _  U
;;a list of lists,
trade-record-one组成! T, _) E" Q6 T0 l- s
trade-record-one
  i7 A4 b2 v9 ^;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
+ j2 Z3 ~, C& B9 s2 X9 `- |8 [$ y% m
% U+ `+ w0 \% ^' k/ y; g) G;;[
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]]: G8 N8 G3 N. R% P1 l2 d' F
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]
4 Z6 @& g  ~: u5 y' d7 T/ O& e) Ccredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
2 ~# a: W' U; \neighbor-total
. s; P: N5 @4 V; v$ x;;
记录该turtle的邻居节点的数目6 G1 `: }$ O0 c7 @; N" C4 g3 Q
trade-time2 [* ~# `9 {# o/ Z' D9 K- i
;;
当前发生交易的turtle的交易时间
5 ~' z, F( K# y  }/ }appraise-give" _# q9 l+ G' y, H: M
;;
当前发生交易时给出的评价
; P, U9 p% ]; D: h# t+ Z" `- vappraise-receive0 p+ ^& a' K% H) h. u
;;
当前发生交易时收到的评价2 X1 `0 R4 |$ r& E: e, s$ {/ I1 R
appraise-time
* s# N% h4 \9 ^0 G) R) ?* };;
当前发生交易时的评价时间
5 G7 ~4 r! ^' v% y, Wlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
' E9 U: o. q8 y8 v! ptrade-times-total
8 j9 \& A" F8 a$ m5 d+ C: L;;
与当前turtle的交易总次数0 J7 g+ {- t; @6 a( A( `; ?
trade-money-total
4 r+ a# V3 T0 k/ ?( T5 |, N7 K;;
与当前turtle的交易总金额% S1 F0 b7 e% O- p* }9 I
local-reputation2 P9 j8 @% D! `/ m- N/ v9 ^# e
global-reputation: |% ~1 Z/ ^3 @5 J
credibility* {: }, U. t' }% w) j* w  r& \# o
;;
评价可信度,每次交易后都需要更新" Y* s6 l3 J) r# W) J" z4 b
credibility-all
4 ?! h$ C3 X3 k8 R$ \;;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 B; f9 ~& G1 i  y2 ^
& T/ }* N/ M% s  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, D3 C; P" ]7 W+ n4 ^% x
credibility-one  w* X$ R( O) H8 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
' r% ?3 E8 v7 g1 T5 Nglobal-proportion' r& x/ \3 S* H4 C7 e
customer
" f/ p( Y. Y+ E8 dcustomer-no
) ~8 ?2 z) W& `" f! A, Dtrust-ok
/ `2 A8 N$ \0 m( q% q" J8 Itrade-record-one-len;;trade-record-one的长度% }% n  |9 u( S3 s9 u% R# C6 x
]
" a9 N: p1 W9 s* d8 I& d+ ^8 I* o( [* K
;;setup procedure
9 [$ _4 s) g( H) K; X3 K3 |8 s: [1 b# n  C7 y& e/ f% W
to setup2 A" n9 Y' S% {$ J

* t, Z( S0 B# H2 F% P' L, e4 g: ?ca
4 u  M4 E% g  F2 s4 ]# m

) f8 q% q# g6 F/ h) s' b+ tinitialize-settings
2 f- M" b% w6 E

$ m4 U7 T- n2 @/ [2 Zcrt people [setup-turtles]
* @0 c! _& a" f) z# Y! U" O, x+ ^' f

9 U5 N. y5 ?( M# J' H% freset-timer
- `+ n( T1 a0 H( D
6 Z/ V3 Q: p9 w* u( g- U
poll-class

3 k8 j. l6 C; T5 i0 w
' m  E( Q1 ], B2 {setup-plots

! x" e% x7 Y8 v# B8 P
, y, T8 d- |( h& c2 R* ndo-plots
: z$ X( z+ o5 W& ]; V9 j
end
( u/ [& J' ?6 _* g* H' x4 M6 q! v9 V
to initialize-settings7 ]( \) Q# i. Z, F$ y% R2 ?
! W! R" O" S( p% I+ }
set global-reputation-list []
& M5 f3 |* H/ q" o6 S) p
$ X2 ~2 e8 l' ]
set credibility-list n-values people [0.5]
! F9 X' b1 G4 H% g. I" y7 r. B% V$ [

4 v; W% o) ^9 E) Q5 E$ Qset honest-service 0

6 x/ D2 k$ j% A! V- C7 _# a
* S! g( `$ \! v& T3 o+ @set unhonest-service 0
5 ~+ r! c2 K& m0 j, B
6 A" e+ P+ W2 h3 h+ D( _1 F
set oscillation 0
) X0 J' n' r% b
/ Z; o1 X: B; s* e! \7 K5 L. @  M, u
set rand-dynamic 0
. Y; d2 U6 C. e# ~6 C
end
3 ^4 ?3 G1 I$ u7 v9 Z3 R$ l3 r1 B) e; K3 O( P- ^& e2 D0 G
to setup-turtles
# W  N% `. w. _( N5 w' O" aset shape "person"
% \: t6 ~5 T. z8 f0 w0 E8 O5 Ksetxy random-xcor random-ycor" l) x0 C3 ?9 p8 w1 E
set trade-record-one []
1 I" O! c' x) \8 X4 P( d3 h6 I
/ F2 [, M9 D6 G1 `8 ~7 y
set trade-record-all n-values people [(list (? + 1) 0 0)]
. ?; {0 U8 K) }
0 z4 V) Y$ l0 T
set trade-record-current []+ j7 D' P; J2 G: W2 M- J- x
set credibility-receive []( p! Y. P1 D  }$ i" J' H: d: W1 s5 P
set local-reputation 0.51 L  d- }  A) g: q5 j( {
set neighbor-total 0
6 S7 m* w# |) Q7 z  |# Jset trade-times-total 09 n0 Y) y2 l* X) v  r  k1 V
set trade-money-total 0( _) W! F2 s) ~! n+ H. Y$ h. H
set customer nobody
" o% }+ f4 w$ s6 F/ W- m( tset credibility-all n-values people [creat-credibility]
! F) ~* h( g; E/ a" c9 wset credibility n-values people [-1]; p* w1 a) L) |( g% V- b$ V+ R$ S/ y
get-color/ h& u" B0 a8 f# y5 R5 b
1 l8 |! k6 ?) X) D: y% b7 s3 |6 `
end0 ]- V7 h* S! J+ g: h% r
; G9 n. K! g4 c! ]: N
to-report creat-credibility: r/ {8 k; V, M# _* w
report n-values people [0.5]2 Q2 {' U- {6 B- @5 z
end% U; D+ O7 B4 K$ `' `
4 ]7 s  M% E6 Q) S! H
to setup-plots
+ t: C; h* S7 \; g7 i/ g0 `" D; l  Q2 o; Q
set xmax 30

% M1 `! s8 a. w. s$ ?6 m% [1 n1 z% a7 G& w+ M
set ymax 1.0
- y% h# L4 Y% }$ F  u, Z( q$ s
9 S" w& X$ Q( r: o( _
clear-all-plots

# n  q; n, m8 f" W+ x! o- G  J
  V, @- O% x  Lsetup-plot1
; |, u9 Z. W0 w2 H
% B; S* ?( ^6 S: p) r2 j) ]5 S* g
setup-plot2

" B- K( @4 Q3 z6 i( h, B" h/ A  K2 r7 ?2 b+ m
setup-plot3
! b* t5 s( S$ F1 N% m. n
end# v) `" y# x* ?; }2 J
2 S7 l" [" F4 T: L& z0 S* R2 q% D
;;run time procedures
* b6 h& y6 L" P. @& Q- p; G$ I4 n! W( r7 b
to go
, c: |$ T5 G8 i) s
! h* L0 u' V% `5 v. q3 ?ask turtles [do-business]

) Z" J/ ~# O! X/ {end
3 q. V  e5 ^, x  @4 m) }4 d/ N+ U% l
$ L( ~6 R( j8 R9 r) b4 P0 Zto do-business
. u, o! k$ H' i8 N- m8 B  B

% n! B  y# h! {. \7 N4 ^: {8 U3 M: C* W4 I9 M/ M. W6 K
rt random 360
0 I: T1 J( o4 j6 t

; Y+ q4 t: Z7 E7 nfd 1
( r( D8 P$ |0 O# G
/ K! @' Y$ f9 \; m. t5 Y
ifelse(other turtles-here != nobody)[
( V, H3 r) R+ K- h

$ ], k. e# y2 j) p6 P6 a% Y+ N. {) wset customer one-of other turtles-here
+ ~6 n: ~7 ~& u) x2 c

+ g9 ?6 W7 x: L$ r# A1 b;; set [customer] of customer myself
/ H# G7 ^( G& S, ~

( i1 u) z6 z  _" Z9 \set [trade-record-one] of self item (([who] of customer) - 1)
" I+ D, H, Q0 a7 ]; N[trade-record-all]of self
! s% i! U5 E) @1 c% t8 z$ p; m;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 K  j$ F2 f9 O
/ Y1 K% o! T, @- L0 }
set [trade-record-one] of customer item (([who] of self) - 1)" r6 q+ R5 y- z1 k
[trade-record-all]of customer
9 H" p2 d7 G& r" O
9 V! e8 T/ Z0 w! l% N3 O
set [trade-record-one-len] of self length [trade-record-one] of self
1 X6 i& h' U7 w, q% A
9 o. N+ M5 n/ W1 }* a  o& e- G
set trade-record-current( list (timer) (random money-upper-limit))

4 h5 c, T. `5 N8 D3 ^1 t9 W$ b3 ^; F$ N8 v
ask self [do-trust]
# L' F2 Z, r' Z4 Q( N1 W;;
先求ij的信任度& C+ ~" c) j- x9 L3 m: K

/ W) c! c0 e- }if ([trust-ok] of self)
' g8 r9 I* m/ o7 t8 T. b1 l9 x3 D;;
根据ij的信任度来决定是否与j进行交易[
. q+ m2 R. R; ?! @' G7 [" ?: L; E# b2 Jask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) f% J) t% \; w3 `, h# L0 ?: y

& j2 K" m6 l! M. h1 T' v. E6 s: X8 i8 u[
. |& J% @8 t. g: b/ v
+ P3 h# N5 B3 G) y
do-trade

1 u) E) m9 Q6 U) S# T* \7 V! `
) o/ u) O0 L" k7 aupdate-credibility-ijl
% |* J3 u( V4 R* Q

  b% t0 A. ^" j5 d3 fupdate-credibility-list
5 J9 ~/ U$ v, Q) e- F

* s/ [. `( g  L/ c+ P. V
! g3 d* Z2 m, g- W+ [8 i+ z4 Iupdate-global-reputation-list
0 I$ L; O9 Q+ [" O- ]7 p  H: }

$ J& e  B! W; m, Cpoll-class

# K( ^& J+ |  E9 `- B0 {* X" n3 X# Q9 H9 I
get-color
# j/ U+ N" |: x5 ^
& r( a4 n  I) f; h7 R2 V% i
]]
/ L6 n8 h( ~' J% ?9 E! T# N
' K+ K7 d* i4 F;;
如果所得的信任度满足条件,则进行交易* F# T" l5 Q! r! _3 v; @7 `

. ?9 b/ x* v  ^& W[
- X; U/ `; `" B

$ f2 q6 ~: \$ z0 N5 jrt random 360
1 f; a+ f- f" m
( W  n( g8 ^* z
fd 1

5 m; n( A( [- Y9 t# I% k! t. u. H' v5 Z. J
]
" y) L) T& s( ]

3 r" |8 C3 Y& |. U, pend
  z4 r8 H$ a& j; A/ z

+ O! O' j6 E2 @" b: r) Pto do-trust # Y: D* r5 P2 O; S6 R( v) B. y
set trust-ok False4 Q1 |- y7 h: W" G8 N- ^/ Y2 D$ y; U

; Y; r1 q5 H9 W! M9 }5 s& Z* r

) R& F: I+ [2 a: N) r; ^let max-trade-times 08 A! N7 p: s. L
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
( O! g/ W$ V. z  D% glet max-trade-money 0
/ u! r+ G8 h6 C: X" Kforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 r3 V; h1 U* F% A  h' F
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). Z# h4 ?  q$ _$ d" B. p
- q5 X0 c, D5 a0 l' f5 [! k- X! a

3 k9 C8 j/ ]0 L7 R5 Z# sget-global-proportion
* O1 i6 Q/ ]; i7 s* b! v; w" Flet trust-value
: i' }2 v6 Q1 h: \0 X1 alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
3 g% c5 [! s( ?2 t
if(trust-value > trade-trust-value)7 |; w: j8 Z3 u1 z
[set trust-ok true]# o. u  V" i; j5 N8 U" b& i
end8 ?( E. K+ ]" _

% w" e4 M& k& i* Y' ]to get-global-proportion
$ ^' `5 v  _' C" W, I# ]ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 j+ ?. v& j2 u- @: @[set global-proportion 0]  Q. l9 ?% |* i0 L, e$ ~% V$ f. u
[let i 0
/ Z& r8 m: J" ylet sum-money 08 ?2 G6 N% Q$ k& b, h" k( u. e9 M
while[ i < people]) O3 ?" C6 e( U* h* a6 a0 x! S
[4 I7 r6 C/ H/ J6 x6 G
if( length (item i- b3 R9 W9 \- B& C3 P
[trade-record-all] of customer) > 3 )
+ F  R9 ^$ H4 r' N$ q
[$ ^4 l* C; x7 {3 Z0 M
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
' g1 [2 j. g, ~  X# ~]/ o4 d* b. c$ S
]2 h9 |: ^9 p. K
let j 0
) i4 j/ x$ K2 ^/ f! y' z* f0 ]: J( glet note 0
( l+ O2 ^, u4 _3 U" k7 @1 Pwhile[ j < people]
9 c9 E4 `% B5 @& d  _' O[2 U4 U2 P5 r% u! a$ v$ T
if( length (item i) t  G5 f/ c) n& ?* c$ ]
[trade-record-all] of customer) > 3 )
* e2 N9 i  X; h6 b- h6 ~. K
[- e2 B8 w! e& ]
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 Z/ B, u$ z2 v# p( ~6 @[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& u  ~. \  D& ~' T* H% ~[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  _( g0 E# \# G/ X
]" l1 }7 [& a" D" l2 k% z
]
$ F6 \- ?' x' {9 @) s7 F! pset global-proportion note% m6 y, A5 Z! s& X
]5 e3 r' p0 [! g% b
end: E' B, @3 W, ?8 L  a

; `7 ~+ x9 S  G+ D! x/ tto do-trade  r8 G1 N0 ?: s: X0 S' ?% _
;;
这个过程实际上是给双方作出评价的过程" U+ d) a, O% e
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) D. K8 M" T6 i. Q9 ?' v; P6 }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 u; x# f7 g+ G% l# d
set trade-record-current lput(timer) trade-record-current, k6 \0 G: A, D) \% d# C
;;
评价时间
6 f: x+ ?" t8 a; I. u9 uask myself [
( a3 k/ S& k4 [; J, v9 oupdate-local-reputation
: J. s1 M2 q* w# \2 e+ ]set trade-record-current lput([local-reputation] of myself) trade-record-current# t, ]7 z2 Q! G/ B6 f4 k# ~
]
0 ^0 b' _( o7 `# K+ c' R& Kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' T# p, w+ L3 j# [( ~;;
将此次交易的记录加入到trade-record-one
$ b- x" x1 f6 m# F' a4 rset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" i  h8 P" x+ T- z; N
let note (item 2 trade-record-current )  m# d7 a- _- c! O8 e
set trade-record-current
. W6 F! d6 a% ?3 D/ O6 A$ o, p4 }(replace-item 2 trade-record-current (item 3 trade-record-current))

1 l0 ^: A; R# n9 Lset trade-record-current
8 g5 V1 r/ ^/ N/ S9 Q* L9 T(replace-item 3 trade-record-current note); i) Q0 P+ [" s0 q

- j2 k) E- _/ C" e

9 n: f( `6 L+ C+ s  F( _( S% Fask customer [
7 `( H$ v4 L8 Y  s- rupdate-local-reputation
7 R; ]- c' Z: G! p& oset trade-record-current
0 v  Y, a" F* `+ ]: z9 {0 ~/ T. Q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 a: P9 R: R! N5 j: B. F/ X* X5 F]
" H& ~0 e, I# J: a5 {' }. p9 P! h0 N- x  C& |- T9 z9 E# M
; K7 S5 N, ?3 ?" w/ `
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" O6 }7 ]5 S- U( w

2 [% }8 I5 ^5 B4 [* z. yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 ^7 V  U8 j& s6 w) l) {2 `
;;
将此次交易的记录加入到customertrade-record-all
: y4 b/ I* b' P8 _& `' y  Q+ S7 pend7 x  o# w' y% {$ F
. Y5 E8 F( N% G% M+ z
to update-local-reputation
+ G2 t& }+ F7 {set [trade-record-one-len] of myself length [trade-record-one] of myself1 ~' z+ S3 ^7 z! v! m: J

6 J  m! V% Q) A; e
9 s  H4 b+ l! |* k2 {# a* m;;if [trade-record-one-len] of myself > 3

4 r& y! B2 J/ j2 a5 Lupdate-neighbor-total, Q0 G; F! @' @+ H5 O7 v! `
;;
更新邻居节点的数目,在此进行
& V# a1 I& R2 i* T0 R/ s+ _" I3 [- Blet i 3
6 |+ F7 g4 y, Q+ n3 plet sum-time 0& P( ~0 Z' l" k5 j6 K
while[i < [trade-record-one-len] of myself]& c# D# s3 N5 y
[
: k* G1 @# E' |& D4 pset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% @$ z1 K& ^* j1 y  x
set i& G0 b9 M  N# M+ i
( i + 1)
2 y6 K' Z$ V; A8 J
]" k8 n+ z9 K; q. C3 l
let j 3" s2 Q" ?6 u1 a" }  b1 v9 W2 ?
let sum-money 0" k0 Q7 ~: q3 s8 D
while[j < [trade-record-one-len] of myself]( j. ~. b0 b( L/ h# O# O( d
[7 M7 k$ }+ ?% Z, T4 V- Z
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)  h# j3 Y, j/ W5 p
set j/ i1 a) R8 v- m1 ^
( j + 1)
. w: X! ]1 i& u# s2 d' F
]# ]' R4 F$ U. Z" j' @8 J# q
let k 3
, x, L# S( r# U" D/ m* d1 [let power 0; U! [% r8 V# u. w1 ]# W' k0 v9 @
let local 0
4 X- h8 E, W8 g$ n# Owhile [k <[trade-record-one-len] of myself]+ `9 z* C+ |) P! n" @$ o
[
8 y5 N! k" r8 d8 O1 yset 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) # j  |5 _7 `( `2 }( ~7 ?
set k (k + 1). `+ p# H; a! N
]
# f0 T8 X7 P3 x0 \% {  E5 \set [local-reputation] of myself (local)* e. r: N  ^0 l0 X
end
# F' t8 F' ]4 i! Z+ c( Q3 `  n  G5 k6 U4 }
to update-neighbor-total
1 Z; X' C8 K$ r( y7 V$ l6 G0 i! j% Z3 J
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]+ I. K: _7 s" y4 a1 U

2 h9 `, w$ u7 @; n7 X% {

2 m  X, j8 p9 Y0 Nend! _$ O2 @6 |$ u: G
6 |; y" C9 q7 O) {6 w
to update-credibility-ijl
: X/ Q- T/ h1 B6 t9 L' v" d. X6 _+ B( a9 w. z. m4 `
;;
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。: h% `" K" ^( K' x. G
let l 0
* c( Y. T7 c) v+ ?- s6 iwhile[ l < people ]
3 t# c6 v' b8 N1 I- Q7 n* B9 A;;
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
  r' D; P: ^+ C0 T$ A5 [  s[* X& @7 M: ^9 t8 L* K/ V8 ]  x5 X
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) j" S  r9 K5 r; @if (trade-record-one-j-l-len > 3)
# q" n9 ?' v1 c: n6 E0 F[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! J8 E, o! D( v1 |# E8 \5 }
let i 3
; v- V% P- c8 |; I& x* b# a" Zlet sum-time 0
! }" E+ c& e9 w* _4 F% [9 B. Cwhile[i < trade-record-one-len]
! @- p) F% @, n[# H5 h5 e9 z; f1 k* g, {$ A- i
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) @7 Z4 B6 O/ O0 p  B0 Kset i
0 x/ U: O% N; E1 b/ v/ |' Q: ?* }( i + 1)

3 ~$ ^9 K8 g# R0 N+ [5 ^8 Y1 \1 T5 \]/ D: s, ~+ J3 W1 t3 _4 Y% R$ |0 w& L
let credibility-i-j-l 02 Q0 m+ t- ?/ W; ^5 t7 M6 D8 ]
;;i
评价(jjl的评价)) G: j' t$ `3 i) F5 Z! S1 c
let j 3
: |: r7 w" s& g4 |. j$ Llet k 4
" k( K: }- H' Q; S4 ?/ |; Swhile[j < trade-record-one-len]5 y* X4 r% l( [4 t' Z1 ~) s
[
9 W( f& d7 P1 dwhile [((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$ q& ]/ `9 F* O
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)9 s. {  z# M) ~' I( e. h, j
set j) R; S0 [4 D/ R
( j + 1)

2 j* V" g% e7 D7 j]  }% n! v9 n6 M- Q4 S
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 ))- J8 `: f% X* O/ q, n* V

+ Z1 L5 `( D* S3 a, K

; i0 m. ]* H" K, Elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ s3 x7 f1 M$ z. [5 L, K4 Q8 S8 R;;
及时更新il的评价质量的评价
( o- h0 L$ V8 t/ S* n/ fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" G, M% q  R5 Y# gset l (l + 1)
; L. B7 X8 x8 l/ t4 e( d! n! v. s]
1 a" F, R5 p, c! Z) Oend
% C2 X* f4 Z( d/ ]/ b0 L8 h) Z9 e2 C2 u) @8 f& k
to update-credibility-list. E! [( f% ]8 C
let i 00 T* M# u+ I% R: r  m8 c
while[i < people], a) D$ `+ p) j  A1 n" w3 X$ C
[9 d) H/ D& f& \( G3 |8 V
let j 07 h+ q: h5 o* ^& e7 ?, ~
let note 0
& C) R5 E( y- K0 _) Glet k 01 N  N/ _8 {* b/ G) {& f
;;
计作出过评价的邻居节点的数目( o" ~# @# _5 y+ _
while[j < people], C) D: s/ a5 `
[  }1 _) s$ ^6 S
if (item j( [credibility] of turtle (i + 1)) != -1)9 r! i7 U8 Q0 t6 P- r
;;
判断是否给本turtle的评价质量做出过评价的节点* U/ x7 Y* a+ ]9 k3 o
[set note (note + item j ([credibility]of turtle (i + 1)))
% H  r" D! h6 ?) h;;*(exp (-(people - 2)))/(people - 2))]

0 j9 p5 V9 X' A  `3 b1 {set k (k + 1)
7 ~/ q1 o' ~; c+ m' J" {]4 i/ y# [5 c; }7 B
set j (j + 1)& A0 d& g6 {( S
]3 T& B( J  i: B  G( x9 S4 p9 O: E; s" h
set note (note *(exp (- (1 / k)))/ k)1 W! c" m+ @+ k! D" H( ~
set credibility-list (replace-item i credibility-list note)
8 I( d1 W9 x+ k  wset i (i + 1)' G' V6 q; U* [  M# F; m" {
]
/ T, q8 I$ D2 r$ Yend9 d/ H5 X/ p/ j5 ]  I0 K
* M3 X, t5 h7 j0 |" b
to update-global-reputation-list* `% g$ ]0 P. W2 o! ~  g- A
let j 02 b2 E- e& Q8 j# b1 p% s4 ~7 Y
while[j < people]
3 ]+ }; h3 K, [: D( h$ M  E2 q- i[
& L% m3 P3 l: K* X! D  s* [let new 08 p% V; @5 i3 M& T& {( C$ t
;;
暂存新的一个全局声誉$ \3 ^8 y7 [4 E2 {* N5 ^
let i 0" h: w  ^( b+ F
let sum-money 0* p; t: N8 w. R9 P$ N! d, f
let credibility-money 0
1 p$ J: N( s5 e2 Z" U2 T3 }# b0 Twhile [i < people]
3 |4 @6 \+ i; R# |$ Z- U: e[
" n' i% F' c8 N1 }. _set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) X) I+ {5 P  g7 q/ ~
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) @4 `, A% U3 `& @3 j, u/ v2 P
set i (i + 1)
& [# c+ B3 [7 z7 J* a]& m! S5 ?+ W: t, Y  O4 S
let k 06 H8 C- n" k3 i! ^
let new1 0
0 [# k% M: S+ _) a) v4 ]) Uwhile [k < people]- S" P! `4 ~( Q* I% \/ W
[! ^* D; t1 l6 E
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)
1 w' P  B- Q; R* x) m/ Gset k (k + 1)
, h) Z6 H" t: Y# ]4 {5 V]
3 R& {7 h# D5 W: u/ U& r9 F! Eset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. t( h4 k) {0 ~$ pset global-reputation-list (replace-item j global-reputation-list new)
  z0 L& c9 d4 d5 b! Eset j (j + 1)) B* o( K  b0 s5 v( ?4 O+ l
]4 h+ N% I$ W, e( K# `( T6 U' V
end0 V6 N. R/ W  o7 G# J
, Q: k8 t/ g& \) ?6 ]+ J$ p

% C* Q" p0 t6 o( {
9 x& s$ j( }  A% x! |9 p5 p5 Lto get-color
+ Y8 I( I& ^% \- j( u5 }3 x, [
* A/ q  T0 O) T" A3 J4 |2 Y0 Gset color blue

, G% ~% M5 R9 U: v5 b, A  J' hend
# _% J+ I2 a4 _. l/ a8 U1 Z# Q
4 y% m5 G1 I; y: f5 x% {( ^to poll-class: k: ]0 s& x! O7 M' a3 @& j& W
end
2 S: Q9 h) b0 ]: u9 a6 W, L( r
* p) W  Z) \3 E! S2 j5 @& ^5 m; Q, dto setup-plot17 W/ F  H. @9 M

3 g# M, s! J, {% l4 C" C$ C% t6 L7 jset-current-plot "Trends-of-Local-reputation"
, Z" P& p+ k  ?+ s% I; A

3 C$ \: u( t3 E8 fset-plot-x-range 0 xmax

, e. h7 |$ a9 ]$ u' V. n. z1 C& {2 A7 u9 J
set-plot-y-range 0.0 ymax
- c' S2 Y0 [. I
end1 h5 x" }1 l% ?  d

. y. E* I1 e, b. o# P4 Q- Dto setup-plot2
; o  H, E& C' L! g7 m& Q+ b" e6 ?' I: ^$ x8 @7 p: X, }' v( ]# e8 G
set-current-plot "Trends-of-global-reputation"

6 P0 I, a3 B( I* D$ U! _1 ~  d1 X% ^+ \( m
set-plot-x-range 0 xmax
: l! J, n( ]6 Q' ]
  F1 D  \  Y! G
set-plot-y-range 0.0 ymax

) P/ ^9 d* ^* [1 _+ v$ q' G. s: Cend2 f; a/ O$ E) c' C$ f
! x9 Q# C9 g6 g" I1 I' |
to setup-plot3
' |9 ~* N) A% y% p/ [3 x8 i5 i7 ]0 }' Z
set-current-plot "Trends-of-credibility"
) b9 G% B$ N# Q& B! t9 A4 ?
( }. L8 P2 v- G  j# f
set-plot-x-range 0 xmax
  e- G% b, x5 C
8 ?$ H: E; g- i
set-plot-y-range 0.0 ymax

! u2 E3 K# q2 o7 p  w% Tend! u2 f" b+ ?4 b1 e# N
$ Y; R. j8 |! f" p6 x: g" p
to do-plots
( S/ ^" N9 q. m) Q0 [( b) [4 rset-current-plot "Trends-of-Local-reputation"
, T& F& @4 X( W) zset-current-plot-pen "Honest service"- G& F/ X6 E/ N; Q. s, d) `# t' \
end2 w$ j$ ?. \7 H9 |- F9 P5 }

$ u) C2 U; G# s2 z; p[ 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.
9 W/ L0 U5 F4 x* s# w# F, Z) g0 m& z6 F6 G
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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