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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:
' l" B, Z7 O. X1 a) U' B8 K- @5 [to do-business
( x+ B2 q" s, K/ {: ~( O rt random 360
' a7 D7 v7 `$ T* k' ~" T fd 1$ ~1 p( g) k7 @
ifelse(other turtles-here != nobody)[
6 I: D2 N3 r" S   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.
1 p7 l/ Z4 S, G/ |5 C! L   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 _1 ?, ~: m% H3 V   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. l! {6 s% V% E$ G4 i( Z! p& j
   set [trade-record-one-len] of self length [trade-record-one] of self5 N  |" y8 O+ X0 {. y/ j4 \7 m1 S
   set trade-record-current( list (timer) (random money-upper-limit))
  s  t! U; [1 `; q3 C( P+ L9 \
) I. g5 S% _, {6 o/ q2 t8 }问题的提示如下:. C4 q2 j) w' V4 N/ M& A2 n
/ f* P6 U+ Q! M( T- c
error while turtle 50 running OF in procedure DO-BUSINESS) L1 d" ^1 G2 x$ ?% K
  called by procedure GO
  E: u8 H# ^( c& }. l$ zOF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ l; r9 P, |% j  e5 m+ g
(halted running of go)
4 I% l- h+ E, C& K% M: p) f, [: F- S* c# O1 o' F" D2 }& O
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~~
2 T; ~% x  D6 c: y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
1 w$ i( O4 \/ ^1 aglobals[
$ v2 y/ T# _, H( D3 |: Uxmax/ G$ {( m, k: x: p& l; y6 H
ymax+ Q, K9 M$ k- d6 A/ E
global-reputation-list
1 `, U  s5 g+ n3 e& z9 N& M7 j4 K( R2 ~. @/ z
;;
每一个turtle的全局声誉都存在此LIST
, S% ^* P! y0 a. l7 S- kcredibility-list
+ f# o! @" U( N;;
每一个turtle的评价可信度: O9 q7 x$ [# o+ b7 }& P8 Q
honest-service; _6 F3 E& h; e0 C: r$ H
unhonest-service" r) t) y4 M$ j- ~
oscillation% w2 T8 u1 r3 x! I. z6 N, N
rand-dynamic
  ]# n: {/ A5 X" ^]
( k* o$ B( _. l* p" p5 z) |1 U4 V; ?/ E. ^* a
turtles-own[  U: b0 b! j% n$ \* B
trade-record-all
9 _6 y" f! j3 O4 u' Z/ `0 ~;;a list of lists,
trade-record-one组成
0 O, ~1 i4 @, O) j( w0 Z- utrade-record-one7 E: g- j* z1 I9 G7 o6 J
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 j) A9 l) b2 j0 {
6 o9 P; U1 I8 g- A+ i;;[
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]]
; t* N" C% Q# F$ |5 Ttrade-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]% t& d8 |9 A, R) n; W  d! v( v4 z
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/ w$ Q) c1 O5 o+ @5 @
neighbor-total
! A! P. K4 o( E6 a  y+ J;;
记录该turtle的邻居节点的数目: @& H- H9 A% a  q! L! s1 y+ G. d; Q
trade-time
  `+ t3 F# r" G) m;;
当前发生交易的turtle的交易时间
9 X" V1 _, U- b7 \% O! @: p) ?  |appraise-give7 l. C! O$ M$ b9 o
;;
当前发生交易时给出的评价
  _% |0 E7 M8 j0 r0 v* j$ Zappraise-receive. x; v; Q& V8 c# O- w% }
;;
当前发生交易时收到的评价
) i/ c3 i; A5 h" q* L6 kappraise-time1 ^$ D# \* o$ l! F% g
;;
当前发生交易时的评价时间
  U0 s* H9 A- Q. c! ?' Q5 }local-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 {* d  s$ Y( X, L8 k$ Ttrade-times-total
6 i, H1 H3 Y/ P0 D3 j/ E& s3 z; r! @;;
与当前turtle的交易总次数
" R2 A# b; L1 M5 ]# w  Ntrade-money-total
2 `6 }) Y1 m$ H* _# L;;
与当前turtle的交易总金额) d$ E& E0 v& `0 d; R6 x2 _
local-reputation
) j# Q* z( c4 c* ?! l# W  @global-reputation
! C5 B3 k. ?( `8 y. ncredibility
2 K  g% n( C  S- s# Q( l3 v: J;;
评价可信度,每次交易后都需要更新
- M  |# K4 W0 \: O9 P- l! Mcredibility-all7 s! H1 O! B" E' D: Y
;;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4 f$ t4 y0 [" @! A) Q

1 S2 `7 e# g" \+ \% H( K0 E8 B  E;;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
4 Z2 n, |5 r9 Z0 L% tcredibility-one
; a7 b) x; A1 k* E, m;;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, U3 j  {: G7 o$ A$ b- f
global-proportion
5 x% P% A6 Y  xcustomer+ _. I  S4 r% @7 D$ [8 V
customer-no% \# N0 h: z8 X8 M9 v8 w
trust-ok3 k. C! g( c5 e# G
trade-record-one-len;;trade-record-one的长度
+ V+ o" M0 l8 ^4 X5 E]5 J. e3 n3 Z; ^: ?
4 I  x* y9 L* g7 H8 b
;;setup procedure
* I7 r  R$ J( k) `
0 {1 r( p6 v) p/ ^5 H; Oto setup& v& M. E3 ~- e, e% V4 ^% B' g# ?
7 A- P* I" d* g  Y
ca

7 d+ }% r* }% M7 e* V6 d! \: v. Q$ x( V! n$ q0 F0 z! ^
initialize-settings
4 c3 j) w1 B1 ], i

1 j5 V) J& _! T# p9 O1 ycrt people [setup-turtles]
! p) U; S8 ^/ ?/ i/ J1 }: H5 \/ Y& I/ l
, q7 v, K' c0 Z1 t- \/ ^. m, ~+ w
reset-timer

0 s" Z& i9 K' ^8 F+ i% e& N; p/ Z) q4 C- f4 M/ c
poll-class

, Y4 M/ j& f1 e& d% Y
# m8 J- ]  q  M: M* W( p# hsetup-plots
/ {1 c/ \7 F6 n  P3 {5 z

5 I' \- V% C5 J( g' V* _" }do-plots
+ z8 Q5 ?& R# `
end! Q6 ~8 V3 k& h" @9 V
; r; ~. F3 u0 H. A' ^3 _1 B& Y
to initialize-settings
5 d& a1 G1 ]  v  R5 w# b% }- C7 v$ Y, [, F: Q, V9 A3 j! i% [
set global-reputation-list []

: y5 Q, e1 d7 N- Z0 k& c4 _
% }# r6 r8 A, C& i6 X9 Bset credibility-list n-values people [0.5]

' e( h9 _) T/ |/ B3 ?! H* W* W% o8 e
set honest-service 0

7 k; P  \% x+ S$ O: |' N4 a, J* r! V1 Z8 w
set unhonest-service 0

$ \) Q6 e. Q: L
/ x4 T' Q& c( T! O0 D. U; D6 z( Oset oscillation 0

0 ?( N; V+ W2 A0 Y4 U" E
) K+ u/ B$ P  Yset rand-dynamic 0

- P% e* N0 K' Gend; {/ |: Q  I+ `" o  T" ~

' _$ `. q. R1 E* _7 dto setup-turtles
3 ?9 F  {1 {: P$ C9 j- c1 F) cset shape "person"& o( |' n# N# @+ o) W
setxy random-xcor random-ycor
/ B8 V9 ]  M; t( r9 J% Pset trade-record-one []0 @( q. @9 m6 a+ A5 S

/ [3 }, U  e+ tset trade-record-all n-values people [(list (? + 1) 0 0)]
# u( v8 ^' n. E9 U& w4 ?7 P
: ]& c7 P9 l9 e0 `) A; n# s
set trade-record-current []
# n. W% ~0 p0 C1 \: ~4 ^set credibility-receive []6 b/ W+ m/ j! |! R& r7 x( U
set local-reputation 0.5* m4 o2 u: f" S& P# h
set neighbor-total 0
, `1 J/ G+ w, {: H2 sset trade-times-total 0. ~# r4 A0 J* f; X
set trade-money-total 0
0 b& \$ b* I4 x, ?set customer nobody; S' e  [# [: j) t% ?$ O- P
set credibility-all n-values people [creat-credibility]
3 C4 A0 j3 p( |2 v( U3 Hset credibility n-values people [-1]
3 a' z+ m6 z" G& J8 Xget-color8 V$ I0 V/ x( c4 G

2 n# v8 h+ U& d4 J; L& {% lend
; p/ q) {& E1 a) c9 m
2 i  Z! O( q5 I0 e0 _to-report creat-credibility- Z* d% X$ s* T) K0 N1 t/ D* |3 U
report n-values people [0.5]
' o/ R* g  \/ e. ]5 ~end
; C5 m1 {! Q' P: n
3 P8 Z/ `/ Y- N' Mto setup-plots% w! k% h7 |# @( ]5 U( C
  S: _! C$ B0 D- a/ M( u/ G
set xmax 30
: m1 s% l( B- Y3 l3 X" p! ~
9 n1 b! f. [9 S% X
set ymax 1.0

* U8 \0 P2 U8 Q, |2 V9 ?- Q. o2 {% h, h0 V" v9 M6 j* s
clear-all-plots

( {, i6 i9 g5 \2 P8 t
* q8 r/ |2 Y* Q$ Dsetup-plot1

9 p- C1 F+ q( t( \( c( Z9 s! b& ]% a* U9 i
setup-plot2
  b+ H4 r/ I# y2 W8 c
2 i! J) N# g$ }
setup-plot3

0 @) A: s: c+ I& |- J& Iend# P; ]* g8 {$ V/ I0 S4 l! f: y
7 Y: \% Z% r% a& h" [3 u# N* A
;;run time procedures/ v- L# J% z* s
. H4 z2 h) K: g% G( Q! A. v1 ?, i) Y
to go
  B  J: F5 ]$ ]  e* w9 a0 a( q) `
( Z% Q2 L8 M5 a, k" h) _ask turtles [do-business]
! {; k" `  z; d2 q0 g2 H; x
end3 w  j- {( S6 T0 T
; Y4 k* G% [% Q( z
to do-business
9 P( P4 v5 C/ z
/ Y% n5 J5 K4 M% m; t; C

( y+ R: g( B; C) d6 ^rt random 360
5 c5 N1 n3 v+ W3 V5 ]6 ?
* U, U7 z2 D  h2 ^
fd 1
; v+ h; \& o, r! B& n9 d+ \

" z1 N9 y9 V+ ?ifelse(other turtles-here != nobody)[

/ T2 r. Y" |3 W% {3 b8 K9 G& f% \8 }# K( i. W( G  O0 u
set customer one-of other turtles-here

" m6 X7 P! y- ]' h$ E
2 q' ~( }  W( y0 B0 [2 O1 G;; set [customer] of customer myself

3 I( b" x- g' E" g: y; u! P" O& Q! k! B/ l
set [trade-record-one] of self item (([who] of customer) - 1)6 v) N* d) k* s9 _2 q. }' L9 l7 ]
[trade-record-all]of self. g8 R: U; f; A# b2 q
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 T; j) j) C. A! g3 D6 c  x
0 Q* m6 F: D1 z' |set [trade-record-one] of customer item (([who] of self) - 1)
% W* J/ |- `7 l3 }6 `" P2 [& U+ V. r5 ][trade-record-all]of customer
% v! U# ?& }% w- }, F0 ]( C" D

7 ?! o  P! m$ A$ t, d! K* p- o6 Lset [trade-record-one-len] of self length [trade-record-one] of self
' Z0 Y; [5 G. |) [" V, A

: h- Z# g* ~- S& hset trade-record-current( list (timer) (random money-upper-limit))

+ h- b- u4 @7 H9 p3 \
& X5 Q; q" p( r1 U" S8 l2 qask self [do-trust]
$ N6 G5 I& a  F4 r( S$ V;;
先求ij的信任度
  T& F8 C; m+ f# Z& i% o
* h$ ~$ g2 Q  v8 v3 e4 gif ([trust-ok] of self)
8 X$ h7 A( |! M3 H* l;;
根据ij的信任度来决定是否与j进行交易[$ A& u. {2 l8 K2 H7 R" [
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself/ j* n" |( X7 I# H% \0 K. @
1 D: u5 U5 ~8 s1 J! \0 Q# l3 I
[

) ]0 \7 }. f" \9 \" s3 J. `
2 f: Z7 b8 U2 d$ `+ h6 {do-trade

0 y( D; F; F7 Y% R- I& ]# s
, S" a' P$ d8 Xupdate-credibility-ijl
6 ?& t* S# J$ R: a( ~: R
! g7 c1 p) h! m9 q
update-credibility-list* Y. ]% m  Z# g6 D" @
3 t- _7 e* Y3 I3 e  I9 {7 Q. |
6 e5 W! ^, y. w
update-global-reputation-list
% V  I3 u& ~; N% p1 |

) x3 D9 P4 Z* C4 h; fpoll-class

  O7 H# O  N# @- Q8 T8 L- l) ]6 m& H- ^1 j, e$ R; q- M5 {
get-color
0 V0 e4 x2 ]2 H! l& C

# @1 r0 ?: V' n]]
! B7 z. q8 l9 R
4 h& ^1 U2 z7 M# M- {1 k;;
如果所得的信任度满足条件,则进行交易, Q3 X/ b+ j& b2 }- X
3 a# Q, K4 _4 w( b* R; r
[

  O# f/ r# V$ U" m9 \/ ~8 w7 c" G
8 M$ `6 ]  d2 |* ?2 D; j  `rt random 360
, u6 p/ I0 G6 I- |
" G) Z1 m' ]" T
fd 1

# e4 ], H! U) @! C
9 _& I. V- _( d. f]
+ ^! B( a& R" H( q
( V3 Z# o' F- D" P. j8 g# ~
end
; `3 n( f* K% ~

% W3 s/ I/ i5 P9 qto do-trust + N4 w1 n( @  J9 b5 ~; x
set trust-ok False
8 M9 K# c1 k* x8 u# L5 E. {
  Q- ~) {) Q3 ^$ E; W

. B- {' s6 I2 H) L& ]2 ?let max-trade-times 0, s+ \* J6 j, L) |& a
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' `; s& f0 U# I9 ?9 J" olet max-trade-money 07 }. e/ j9 R. n1 n# t
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]. D3 C2 ^6 A$ y, U+ p' {! G
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! Y+ ~- \' ?% Y6 z, `" F
1 c( E9 s7 a" G! r* D
7 P$ U$ X" `7 P1 t! j
get-global-proportion' A; ~9 ^8 j! ^
let trust-value. c0 [7 u" q" B" n
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)
1 E7 L0 I8 ~/ C% L
if(trust-value > trade-trust-value)
/ F" c! }% [" x6 H% h[set trust-ok true]
3 ]  F( ]/ P; kend* A/ v# D4 U. e5 u1 s8 S( Q6 {# W

6 m: e- c8 ~8 E1 s; w9 Qto get-global-proportion
& `# x7 ^, @3 [ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 \% \9 V( T2 l: A2 p. |$ T* t( X[set global-proportion 0]
9 f1 g6 ?# ]/ M% S4 G' L0 b; u[let i 02 F7 V: S0 v$ j: C; f
let sum-money 0
9 _' u# i0 M  \' o& w, j/ g8 kwhile[ i < people]
8 y7 g8 u7 N1 M[+ R. l4 W2 Z& r, \! S
if( length (item i
3 o# L! H; P: S1 n: J( V[trade-record-all] of customer) > 3 )
: M: T( k3 r! s! S4 c7 F
[6 D5 _! }, |, R. L! h$ N; Y- b* c
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 s5 E" o1 G4 c' H4 e
]
( ]% G% O8 R2 m$ Z]
( {6 L- `. ~. R- clet j 0
3 ]' N( k; c% Z0 |/ Olet note 0
2 H$ U) o( l# Pwhile[ j < people]
1 P. |) D1 p5 s2 |[
( j* F! C/ l6 L0 r0 ~$ @& `if( length (item i
/ {) c8 v6 k0 [" E[trade-record-all] of customer) > 3 )

! y3 m1 j( S1 H% f) @[+ `5 ~" `# v4 I
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 r. A  r( R0 w2 y8 \+ m[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
9 F4 J0 x. A# h[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
2 p/ V. R! K/ g6 B: B]3 @9 C( f4 Y0 a: r) [
]
7 O- n) M& D$ \  L' B$ H2 ?set global-proportion note
& S9 o! v8 M# ^! Z4 J5 L/ S6 e]2 g3 O1 m( o! J  ^2 U
end* I1 v; P$ P8 D  ~6 e, Q

, S% k0 r$ _# o, Yto do-trade' \# p. X/ R: `, O, Z- q3 H9 ~& N
;;
这个过程实际上是给双方作出评价的过程- S' w& a# Q* G2 Z" g4 l. }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价- Q/ f, W8 S- P9 T
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价+ W4 X# D# {9 g$ `* X
set trade-record-current lput(timer) trade-record-current; [7 J( q; p* @+ T7 k
;;
评价时间
/ e- n* n& I; M/ ]) h4 u) q) ^ask myself [
, P" w* [- `: y. x& U3 b- W% eupdate-local-reputation+ l( v8 Z) F* J) K1 n" h7 D
set trade-record-current lput([local-reputation] of myself) trade-record-current
8 V4 }  F$ o+ l; ^9 ^]
4 n+ U* y$ O7 {# tset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
) v6 }4 `  r% g* `; W;;
将此次交易的记录加入到trade-record-one# D* G1 e9 ^( o
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 U: N* B* B7 f0 i" {. B* [let note (item 2 trade-record-current )
- G" S, u: [: s7 xset trade-record-current2 t( p/ L0 j. @* U
(replace-item 2 trade-record-current (item 3 trade-record-current))
- R* q. P* T: C5 S2 [$ m$ g0 L
set trade-record-current
" p1 M, ^! g  q6 p* T(replace-item 3 trade-record-current note)6 P( ^1 q. w9 S# D* l6 `9 O3 o& J

6 e, |' K9 m( ]
) c: S3 X" I% ]/ g- r' ^0 i
ask customer [, w7 P- Z/ P6 m; d: ]7 d% f- {
update-local-reputation: _) X3 v  P+ O
set trade-record-current
; L) g; w2 p% K4 u8 m; c5 F: O(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, }5 c, H: {$ G' F/ e& j" n, _& g
]& ]; p5 \# n( v+ Y
2 D" h0 L  \+ s4 q! g

) [8 B2 O. V; O; Eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: O1 o. B7 k9 Y( [5 ]- G
: V+ @. T0 p# L
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))- Z! X  l; w0 T" R2 D
;;
将此次交易的记录加入到customertrade-record-all
5 ]  y- j- N  \. B7 ^- |1 N8 Pend: D+ L3 Q$ ]. n( j3 K+ h+ _

( Y  B$ _1 ~4 h9 W- Q6 dto update-local-reputation
4 X9 X" ^( B! iset [trade-record-one-len] of myself length [trade-record-one] of myself
' q$ q3 [( v( f& I; Q; _4 T& q( i8 y  n2 w# }# m# q  B0 x

7 k5 A  f5 f3 A* |;;if [trade-record-one-len] of myself > 3
9 D8 ]& x% T2 n6 U6 i
update-neighbor-total: T+ [# j) V1 M4 c# _
;;
更新邻居节点的数目,在此进行
  f! Z6 B3 _' P: j* H7 h. ?let i 3# ?% N# L8 p. \/ B: O; e0 ?& O  k
let sum-time 0% @* t3 r: i$ n" g2 {  y
while[i < [trade-record-one-len] of myself]: I7 l# q. q/ X/ D
[: t7 t& Z6 i: c! r
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& o# o: A- H! W0 X4 z; `" i
set i
2 k1 G  V9 Y6 l: i' q( i + 1)

; v' K# @9 j* v' _+ R]5 Z/ C( l, R/ I! g! @4 _6 [
let j 3- E( ^, c( R4 z, O
let sum-money 0, w9 T/ h# _$ x: |
while[j < [trade-record-one-len] of myself]
5 S6 X% ~* E  U- h[
- n2 h3 o5 l9 P" n5 Z+ u' I) fset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time): V( C" `4 J9 n9 Y. n5 h( t8 B! T
set j
( ?/ c9 Y+ \1 s. I% ~( j + 1)
# G2 c/ i: }- v1 \1 V
], T: e# M' R5 }. M6 J" Y
let k 3! U8 Z# D  e! G, \4 Y- ^6 \
let power 0! a. W! m2 f- O4 ~
let local 0
0 k$ O6 V3 W( Xwhile [k <[trade-record-one-len] of myself]
+ _+ V; a2 o4 Q* E% K[
: g, e* X% Q- I6 Dset 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)
5 z. s& _# H3 ?# [3 m& ~7 q% Oset k (k + 1)
  G. u7 I0 C! V: m]
# U& n6 F. Z) [( C, c+ ]# E" hset [local-reputation] of myself (local)0 z$ J5 u3 f9 m, U. B4 u2 N9 `
end$ x; x0 E* d! @/ x3 a" q

/ e/ ^2 F/ E+ s( I2 k, p  S2 \to update-neighbor-total
1 j+ g2 `2 B# X/ \
. B$ h; I0 ^9 A! C6 {; T+ _4 z! Zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. o6 t2 x  b" r: J: _

# ]2 m* b9 q" v; E. I

1 w% Y" E- \, C& p5 B' _end
4 _1 B8 P2 H/ @" s3 J! v! n" m4 y2 T& E* M% [8 W* ~/ C
to update-credibility-ijl 5 ]% b$ n& Y. f: `; T  ^% }. l6 Y. R

, B" z' B0 t/ K% x( X3 R;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
8 W) N0 N( j% P& R9 Blet l 0
" X& ]' x2 t8 W0 G; twhile[ l < people ]
  X/ ]3 I6 E% l6 b! ~;;
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
( Z3 S$ u; S$ a: W1 I' l3 n2 @[
1 M( m/ {; y1 N% |$ `let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 H! k8 H1 y) t9 g$ wif (trade-record-one-j-l-len > 3)7 j) I8 M. ^8 A2 c( A  P' r* e- \
[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: {* M$ z/ L* ^  D
let i 3
6 v+ u# K+ w; ~, Q( ^; h. clet sum-time 0
7 @3 A+ R) [7 g% e5 p) C3 M: Rwhile[i < trade-record-one-len]
0 u* g( R" g6 N% q+ p1 L5 N[
4 w6 W( Z  _# k- N! z3 V  ~set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
5 Q1 ]9 R  A% o0 e* ^; c, {  Bset i0 [' I0 X; U! r/ o0 ~: h2 n
( i + 1)

1 }- F2 Z) K/ A5 E) E& P2 I3 b]# O  N) k- `. W) r0 t
let credibility-i-j-l 0
5 J0 \9 T" n0 s/ C6 };;i
评价(jjl的评价): ?; r4 a8 U& j7 b0 @3 L  S& R
let j 3% z" q! _  U* c; n2 d- H, g
let k 4
/ t1 \& L5 F5 \3 S. \3 A% |! swhile[j < trade-record-one-len]
0 R, Q/ p1 ^" d) o2 o4 W; ~  _; B[
* X8 ^! b. Y' @' e* O( Xwhile [((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, G; I; c& p1 U" F3 W2 |8 @# r4 G" 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)
& F8 \2 k3 e: x! K1 K7 }$ kset j
+ N( e  v8 I3 \  n8 @  v7 T" p9 P( j + 1)
# ^! \( b, k3 D2 c! s
]
: d+ K/ m/ g) N" X9 k) d6 Iset [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 ))
% q+ z+ K4 r7 R3 {* S) I! ^$ c1 U0 U- `% W1 R: v8 m' }
" }& l) y5 [" d4 ?6 f* y4 P5 n
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 R  o7 J& b7 J' |2 E+ _' L6 J
;;
及时更新il的评价质量的评价8 Q9 D- q. }2 F3 h' J7 D
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
. ?% x4 ?1 c) H  H! e% uset l (l + 1)
. _9 E1 V! y, e% j' S1 b+ P]0 r% g+ H5 ]7 n# C
end
- T- x$ P' ?2 f5 S
! j% b3 v& n, \' n! X, B4 [to update-credibility-list
- ^3 ~+ l  R- {# L2 c1 T" @5 Ulet i 0. Y( D! n3 R3 ~% ?9 K  R2 N; Y, B
while[i < people]
& q2 ^1 y- z) y* ?1 x4 \[1 x) [# W3 i1 u/ }
let j 0
' k% Q3 [/ w+ v+ \( \let note 0% U* p, j( ~( ]4 w  O
let k 0  V; Y  W8 x  R6 Q! I
;;
计作出过评价的邻居节点的数目
, ~- ^* v) }' J/ Y% dwhile[j < people]
9 G' Y! U+ ^/ r- o[, L# t) b, ^+ I3 `' N! k5 s2 e2 m) v: n
if (item j( [credibility] of turtle (i + 1)) != -1)! ~3 k% b7 M& E0 ]$ W
;;
判断是否给本turtle的评价质量做出过评价的节点
; N1 O, U( E* k5 A8 F" I- ^& @[set note (note + item j ([credibility]of turtle (i + 1))): e4 Y/ W% n! ?5 U
;;*(exp (-(people - 2)))/(people - 2))]
- i! @  v" N  \1 D- i. S
set k (k + 1)9 z8 K0 Z. }- D) A
]
7 W  ?4 z+ t+ a6 lset j (j + 1)8 `5 n3 G6 \; W7 ]# r3 d; g
]+ f; ^% y3 r& g. s
set note (note *(exp (- (1 / k)))/ k)
# C+ f$ p7 W+ f$ E+ ?0 bset credibility-list (replace-item i credibility-list note)
$ I! ^; u; R/ Sset i (i + 1)
6 l* }" q8 K# U" c7 b; c8 ^]
9 t- s' l7 w9 c; ?- e; Nend
+ ]) A% H3 u, Z3 T2 ~
9 p* t9 l. U! ?# I$ c; j5 Ato update-global-reputation-list
0 w# [2 m5 M6 Q* p$ ^) G! @; rlet j 0' H" C- v& z* `
while[j < people]
$ Y  w& S8 ^3 R. w: b" I[
. h9 g7 r% D% [7 |let new 0
5 |/ C3 n8 M3 [. N6 |;;
暂存新的一个全局声誉
" c, S: f7 E$ q) Ylet i 05 Z9 B5 r/ c, ?5 G
let sum-money 0
0 P$ l0 x0 g. plet credibility-money 08 j; e& _7 U' f0 p5 x! y2 q( M
while [i < people]+ s' Y; w: E, `+ G: X- w
[
8 M5 p' F. K1 O- k: g# Jset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 N  o. T2 B$ l# ^set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
$ V9 j7 @1 W$ h: ?set i (i + 1)
, J/ m' Y' S+ e1 D& Y) N]: d' M. h" Q3 B# U/ {/ k5 e+ w
let k 08 s* [9 m$ l. @$ m9 ?0 Q
let new1 0
$ F+ y; Z. Z6 qwhile [k < people]
+ y1 V2 p1 P  F[
7 E% M( ]+ Q! C* ?. G) 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)5 y0 N) \  j" j! h. h. d* I  H0 L
set k (k + 1)
$ Z! T9 n. g6 f2 e0 X* F]7 d7 t8 {) a% W- D4 S
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 u; f3 k( C. b5 C/ R+ Hset global-reputation-list (replace-item j global-reputation-list new)
) s& l: u2 M/ f$ K- z2 Y& Dset j (j + 1); T/ s. {4 |# C$ t: Y9 f- e. L8 {
]
# i& @" H% j# R. f! }$ \- Eend
9 B5 t8 j' n8 }% ]! `6 l% g. a$ T+ y) p) c

3 e# u2 ]( z1 x5 o% B2 `$ ^- l
1 _8 R* y. h9 @4 A2 Zto get-color
6 v2 j3 ?2 u  S
( d! a" a9 _& W0 h  g- X' `set color blue

$ v# ^# D2 G( ~! C2 O8 \  \0 d# F8 eend
- L& |0 {" S9 v6 \7 T( i) T; g
1 Y3 I- \) ~6 M( |) yto poll-class
4 L/ W8 C  G3 z8 k4 E/ yend* l. J% u% K, f0 Q
* _7 f$ ~  |; k4 h3 C% M1 V
to setup-plot1
3 P1 P; y5 U$ `1 ^; m% k' C, u& j; {- _$ D* k# }7 W9 U6 g
set-current-plot "Trends-of-Local-reputation"
1 Q1 n. c+ _3 M' G9 o! K" Y9 J

# R, U! N7 K0 d, Oset-plot-x-range 0 xmax
8 Q6 \- T) Y6 J3 u9 K
) j8 y8 p4 Z, w6 P6 O" W
set-plot-y-range 0.0 ymax
4 R* W, Y1 p1 a9 }
end
+ j+ j! a7 b8 b# z
2 D7 L6 u9 a% N; l$ Z' [# G7 z( mto setup-plot2
' {" A6 l( A+ {! z) ]7 U2 |+ R# ]$ ^% \3 H  Z# O" R2 z2 _
set-current-plot "Trends-of-global-reputation"
6 r& B+ i6 c6 O
+ [8 V- {8 j1 f9 R4 @. X+ z* [
set-plot-x-range 0 xmax
0 S; t' x8 I$ T6 }  Z

  Y; g5 Z% Z1 R% H, lset-plot-y-range 0.0 ymax

% o) W3 [4 ], [/ m2 Y9 F' @end! S! K) b4 X  r: s2 k8 S/ |
$ A, f) ?2 t3 ?0 i
to setup-plot3
0 q" X( d3 ^1 x1 E
+ l( K7 ^0 }3 F' {  ]5 ]set-current-plot "Trends-of-credibility"
' i- x) G7 _, q$ o
+ m% ~, s0 s) ?. r- f& M, q9 k. e
set-plot-x-range 0 xmax

, M0 B( W+ `# E' ^* M5 @* J& C+ p! C( N
set-plot-y-range 0.0 ymax
% N8 U) ?; v- }, r3 g% b
end5 N* V0 ^4 w* F+ G) ^2 R9 o: |% R

! X8 ?0 `( u( {to do-plots
7 K* K2 s8 c/ y. P+ o3 T7 xset-current-plot "Trends-of-Local-reputation"2 _4 U2 R% l# v7 U- S7 {7 e* h
set-current-plot-pen "Honest service"
( \6 L6 B/ {  k3 Q. Jend5 T/ }3 m+ W1 X2 ~3 x+ s9 S

- {, x) \& q$ z2 `3 e* [! Z( W[ 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.+ R; B0 U6 q3 `  m* f# R) p

; ^4 j3 [  Q% c! X+ W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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