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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:
+ x* m: G& S, n  q3 N# _to do-business
3 E& B# e# K* i rt random 360
; T3 p$ }0 K! s) h; g; D fd 1" m: N. I, }) O
ifelse(other turtles-here != nobody)[0 z) S% p* X! B, X7 [
   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.! \# x6 e3 @! Z6 d+ M: C6 {- N/ z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
# k  G, l0 r3 J; `. {. D9 A. D   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. s9 b7 t: n, y+ L
   set [trade-record-one-len] of self length [trade-record-one] of self
& R4 p1 v+ T4 L. c6 S2 J   set trade-record-current( list (timer) (random money-upper-limit)); @) g6 |" D' k& E% l1 x1 n9 h
* l6 `( S5 p3 K; e( e
问题的提示如下:
# b$ Q, D! q" ^+ ^& d3 T( N
4 t. q1 _4 g  I! G: p2 P. t& cerror while turtle 50 running OF in procedure DO-BUSINESS1 O4 b0 b; T" r$ l& Z8 g
  called by procedure GO: i2 e' e" E& ]6 Z' c- ]
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
" o' R/ n" {- q: k# f
(halted running of go)# j/ t" ^/ H5 Z* h& F! y9 e5 E% G6 H) A
. v% L' \3 k" j: 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+ [8 s  h+ Q% P1 i. l1 b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# q" F7 m; X6 Q% ^% f
globals[
6 t) d& e( A# ixmax
) A( G- ], `/ i8 f; G& iymax0 _) B, |" v# ?* @9 B% k* L
global-reputation-list
1 h; q! l7 d. y6 F# r+ B1 Q) v: v* S, m+ P6 w
;;
每一个turtle的全局声誉都存在此LIST
* |# X( q  F6 N# \5 l8 y# Ccredibility-list
* O/ O7 ^8 W6 B9 L;;
每一个turtle的评价可信度
# P: l. K# r4 ihonest-service) r9 p0 E# J- A% v& u" u. ^# X
unhonest-service
0 a7 g/ M+ U) \oscillation
+ f; o+ E4 S; s( G, krand-dynamic
9 P3 D" f# J6 |- y1 j]
6 j6 f- v6 h, l1 i% t
7 P! X  r' d5 h; Y; C' Kturtles-own[
% h6 u6 i( V9 E* W8 gtrade-record-all' U2 q; i/ i  g5 Z
;;a list of lists,
trade-record-one组成
! ~$ Z% x+ c. d) @9 itrade-record-one" p; d: ^% V3 c2 z: _8 O
;;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. T3 {0 ?9 a2 C- e/ k5 L+ D. J# O3 ~. j0 n2 W2 l
;;[
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]]
* g; N5 N0 d) V" t% t( ztrade-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 v3 T; o& P' y  K' {, J2 m  hcredibility-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" f- n8 u+ j0 `. i8 _
neighbor-total8 s) @6 o/ |. f- [9 d: E
;;
记录该turtle的邻居节点的数目- l; ^' ?) c8 c  t* o0 L
trade-time) V( C& y. O% K( w4 |# L& P
;;
当前发生交易的turtle的交易时间1 v$ R- K$ R! V* _+ y: @
appraise-give
! B( |9 f# M' I! s/ x2 E3 D;;
当前发生交易时给出的评价  R& K; |4 Z& r: [: q
appraise-receive: L: |. x4 f  m
;;
当前发生交易时收到的评价( s( y1 ^1 c  g! t' d- h
appraise-time
9 ~3 L0 f! s9 m" u5 Z1 V;;
当前发生交易时的评价时间9 ^- D8 v  d5 ^7 \+ [- g3 \- ?1 E% `
local-reputation-now;;此次交易后相对于对方turtle的局部声誉' O. v* s" t0 P, O3 ?& \6 U
trade-times-total
2 s* u/ d' Z/ b0 \$ i4 b" s;;
与当前turtle的交易总次数
+ g& H* B9 P; y, R1 gtrade-money-total+ D% ^3 j/ w( B3 H0 z" J
;;
与当前turtle的交易总金额
) V% m2 j9 ^. h- [1 _local-reputation* j3 r5 W% v; a4 W3 h8 O, P2 Y
global-reputation
* d- N* `" V! n. icredibility
' V; t4 T' j# s9 r* w. P: l3 }3 ?;;
评价可信度,每次交易后都需要更新
1 ?( ?+ V6 d2 R/ |2 ?& Xcredibility-all2 W' @; Q- _% n! V8 M
;;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
7 B0 I* v  i# F' C& P- z$ o1 [/ e8 T/ z& f* Z5 K5 w2 B
;;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0.59 {2 Z+ h1 T3 ~
credibility-one9 t: ?1 o+ P6 ?/ G( u
;;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
$ \# U& Z  k8 @; r5 y+ j. Wglobal-proportion7 `1 Y# l% ~. c" P$ j4 q
customer' I/ r4 g4 j( z* j+ B8 q
customer-no
" X1 D  e& F; r: T; etrust-ok
- Y# G! t8 @* \$ }trade-record-one-len;;trade-record-one的长度5 Y' d0 J) H1 F
]$ z9 O5 w1 E" L' Q5 Z+ q' K* N

' Y* X. y1 J6 n% d+ @& J;;setup procedure2 j( p' z5 h4 a  V' k
+ a8 k; H) C3 q7 h( g6 p2 Q# \3 q/ g
to setup% L: L7 V" U$ w  V: Z: h
9 ?, d) [2 P1 w# @$ a8 y: M
ca

4 ~' ^% u5 n* ?* k6 V" U% u  M4 ^' f& o' ~0 }" C2 S, _& b' ^" A. I
initialize-settings
. Y6 K6 t2 r, Q) v
9 R; |( |& S$ |4 U- p" R, m
crt people [setup-turtles]

- k+ ~- K' G2 d* p* V; n  P* y  O8 x& j1 K; q2 n
reset-timer

: z- E' a4 E) |2 R) M* z5 R# L# `: E" \& D  m
poll-class

; o! t1 U2 F! v# r- w, a1 f8 d3 j7 C5 w4 z; y
setup-plots
3 B: O, j$ ]! P. h0 K: x
% V2 ^3 Y' d/ q( H* t: {
do-plots
0 }, c% B( ~: `2 V0 V* B
end
8 |3 ]7 z" [* ~
! ]1 ^0 X/ e- l& F" b8 ~0 E$ j, c4 Kto initialize-settings; ], b' k( O6 E) A

# g" S: O* K7 f) Pset global-reputation-list []
) k6 k8 d' \# A* q* \+ w
- ~  B+ c" E# g7 |$ i, k& ~
set credibility-list n-values people [0.5]

5 v, S2 C7 o9 g) q# _$ a  d* v. h0 g6 P$ c* Z, g7 m
set honest-service 0

/ J3 P) ^8 u* P% ^6 ~3 \) s
& ?5 [. {9 f" G1 ~" X' ~set unhonest-service 0

( c6 S$ F( z7 W; j
8 p) r- ^* Z5 \# Vset oscillation 0

3 t3 |* A2 U* n' u. x* K+ M+ g
) H  U1 P, Z5 y1 n6 T2 c) Iset rand-dynamic 0
' i+ d1 q4 h; L- o
end
+ x! E# A. N3 I. p( z" r' W% {( `+ B5 B+ B% u0 e1 g
to setup-turtles
* Z. W# {; M# I" f* @" R" F) [# `set shape "person"* R) y1 Q% b  @& d& ^  \
setxy random-xcor random-ycor
- t1 y/ b. L3 W5 cset trade-record-one []5 x' X( M- i  ^% t
8 m2 T2 S) i0 z1 Z
set trade-record-all n-values people [(list (? + 1) 0 0)]
) g5 R. v# G4 V# o- \8 v2 [2 C
- g, t) u+ o- G& f
set trade-record-current []
  \( S. M7 j6 K! g% U! f  oset credibility-receive []
, b2 _% ^2 x  _( I& v6 Q( kset local-reputation 0.5
% e7 ]! L, H7 s+ `set neighbor-total 0
  N3 |0 S# y2 x; {' Aset trade-times-total 0% p7 ~- a8 d( p7 k( p
set trade-money-total 0
8 q+ p9 ?  b. B8 S3 M; S' x) [( Aset customer nobody
* }, H; T$ x, k$ Kset credibility-all n-values people [creat-credibility]
; U; d0 {7 P, A4 h6 tset credibility n-values people [-1]: b8 K: z; @2 X2 }
get-color7 w( T5 r# n5 S& S9 w* G

8 h+ v1 ?( D" h7 d+ Iend+ ~8 z5 l' C1 O1 B

" e5 Q0 H5 u# e, N; V/ N6 [to-report creat-credibility/ w- D5 {7 [! I1 N* M7 o
report n-values people [0.5]
% U6 [. X# @/ d3 Yend1 Y* T& z8 \' S

' q! J6 `' U; I- yto setup-plots$ b( c; w5 K& r

4 p! H: {; ~" i1 fset xmax 30

: @4 ]+ L$ ^/ e3 H5 V" o  Q. r( D0 j
set ymax 1.0
' a( U2 X0 C5 P* H: Z

2 g1 S1 D5 D# L" I/ i9 Yclear-all-plots
3 \5 ^$ f& `8 R. f% M

& b# I6 r" b7 r1 E4 ysetup-plot1
( W+ A7 K2 S/ e0 Y
) V: L9 s6 Y/ v2 a8 \: }
setup-plot2
+ B: v2 M; n6 U2 g' h

; o8 s) h' G( h; L2 \) _setup-plot3

/ ^: r8 B; ^7 S! ~) ^end+ F$ S/ e1 ~/ t3 w( o: z

# w( F/ E5 e" @9 L;;run time procedures1 G' c& `' j2 L! x2 @6 o

2 x; @9 r8 K" a4 h& A& Fto go. o6 i5 M# L7 q9 R& S& X# k
5 j( ?5 B: v0 n; k- V. E6 ^
ask turtles [do-business]

- I6 G) r! ?6 E) n) b8 Rend
, R+ B- M* L/ V8 v4 O% S
: D  b# y3 u* Rto do-business
. Y# }6 k$ L3 H' n$ i: W0 o- i

; b* C% R+ Z% f$ w6 t2 q% J: ]; c$ H  h, u* H
rt random 360
8 r, c! L! F* e" l; r' k

/ |. G) o/ z1 mfd 1

. p' u$ f' J/ T- r$ B# V. v; L" i9 W0 @' C; e/ G( }1 v7 Y0 s  x% L
ifelse(other turtles-here != nobody)[

( m# `2 g1 ?7 \+ H
( @2 s" A1 X5 @( k# L# {set customer one-of other turtles-here

+ v0 r, W6 A- s+ d9 K( G0 g9 [! X
5 Y6 m9 B, W% o; U  `, S* D$ ~;; set [customer] of customer myself
0 a( S  Q, B6 f
$ L/ s& |8 g5 a/ m' }4 H& Z
set [trade-record-one] of self item (([who] of customer) - 1)# `0 o. {" M& c) f- t. s
[trade-record-all]of self) H* i$ P- I0 W: x
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

: L/ E$ T0 B% S' }7 I9 o
5 t' D+ m* f7 c) `' k9 O+ Qset [trade-record-one] of customer item (([who] of self) - 1)
! S4 ^; C* p8 o: T- g3 _% e) A$ D$ K[trade-record-all]of customer
  p5 }4 h9 u/ {2 @* m9 H# A. t
4 j1 R$ |" S2 i$ H& v4 e
set [trade-record-one-len] of self length [trade-record-one] of self
* |3 Y# d( p  |  ]: S2 ?$ p8 @

( o- B" p- j; r+ U6 w/ Y  t& @set trade-record-current( list (timer) (random money-upper-limit))

2 @; Y9 |0 g" e$ j8 n& `) y3 Z* P# J8 [2 \* B7 e! u( H" o3 m
ask self [do-trust]* j( n& b4 G9 F" c
;;
先求ij的信任度; y& [) L7 K) V$ G+ C; L! y# |

6 W) {9 J) _' b. t$ q. R7 ^if ([trust-ok] of self)
. f. U  h* D; Z- _;;
根据ij的信任度来决定是否与j进行交易[4 T$ c  {% t7 W2 j, H
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 j  \! n5 @0 y0 y0 d9 r
" N/ A. k2 P2 a2 a3 E: i
[
( i  q% m( X) B1 r& A& ^( W" u

$ j9 \+ r4 V0 R* F6 Zdo-trade

) Z0 P1 ~( \5 ^2 K0 N! F, q" f) }2 r
update-credibility-ijl

, s" m2 U2 |2 v: i/ J% B% c# L. d, D1 C) j
update-credibility-list
; @+ B6 z7 m' g; s
" Z1 ^, ]5 ], V4 ~9 |
- b$ M" k4 ]" r5 f2 ^& f: i& p/ T
update-global-reputation-list
6 A' c% h" }& M+ q9 m9 i% B
# Z4 i" M7 v9 u
poll-class
$ A+ K1 y- U# ^
: j  e2 U2 J& n9 x- p; r; P6 l4 e
get-color

# w9 \% z7 q: Q* i% f0 d4 C: m# B+ ^& w" G& a1 u# }& M6 ~3 g
]]0 F' v& N, J7 x3 \( h3 m- u" b

! e. F; x2 ~4 {; m7 W  S/ `;;
如果所得的信任度满足条件,则进行交易4 Q; G& L' ]9 Y8 a" e3 i- j7 L4 a" g
' u) L1 N& N2 A' ~  B2 H2 i, [
[
. m; e& E0 C" p  H( l
& K1 o7 J6 _. [6 _
rt random 360
. m+ C5 F# b6 v0 I! B/ E; u

' T' b+ e% @$ _$ C9 T5 I" nfd 1

* L( [3 |2 t: q! I$ [1 P, G4 m5 t% E- M1 p$ |+ `2 Z9 i
]

5 W' `2 n% b3 {( o- z! T5 |/ L, _$ U
end
# Z8 O: d# p$ \0 C  h+ f

- f% I1 m2 a$ [# \# W* _. Pto do-trust
7 v4 F' T+ h1 i; fset trust-ok False4 a' x4 G* u, F+ L9 f
3 L/ c) ^* J& k; R1 e
, m! o/ C6 M# k' D, s
let max-trade-times 09 L9 V7 S- _  K1 n- e/ x) R
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 S0 m2 ]4 J) t5 K* clet max-trade-money 0
2 ~8 B! a( r! D* d8 d$ u/ uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( F3 Z) v# b! f; E+ c( `" q! d( X+ Y8 S
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- T/ p, r& ~) Q7 W! O; R' ^+ M! _4 E4 g8 H% }& I

1 W$ c; W% H3 Z; d% h/ E/ T& aget-global-proportion+ a( N9 X) ]4 W+ ]- M' X
let trust-value
& z/ N  @6 c) g, B4 h6 wlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

) M& Z" e6 ~6 t, x" Q( @if(trust-value > trade-trust-value)
  [5 r$ @7 {1 z) A8 J7 Z[set trust-ok true]( E5 S8 ?& p) u9 w9 u
end
. Y* c: g  a! n+ K6 b3 t5 ]  U7 W
  z  |+ {" H/ m" rto get-global-proportion3 \7 Y: L; W" M* {7 R  q6 b( ]" D. W
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ R1 J: A6 q: g! o& m
[set global-proportion 0]- N% Q6 H. [4 S  g; d5 ~- T" R
[let i 0
# C2 I7 i7 F$ x% Q6 mlet sum-money 0
" p8 Q% T: ]8 G( |! G9 c4 x" Rwhile[ i < people]5 P# t; T- O* `3 N1 O
[( O0 n. c; a9 Z. I/ c8 P
if( length (item i) J& `7 e; _) Z' X* Q9 S7 s& Z
[trade-record-all] of customer) > 3 )
5 S8 `6 u6 P# p7 Q5 R
[) _6 `2 |0 L- |7 h9 X8 ^
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  E+ ?2 o# O- \]4 M- j$ Q& d+ _
]
* M7 r& G3 b4 |  t- vlet j 0% _. l5 @9 D0 F+ Y
let note 00 s- V( U) A; G
while[ j < people]
/ d& q1 m5 B; q[# v4 \" l$ ^/ ~, v9 d0 [7 @1 v; `
if( length (item i( E+ `# C) H3 q3 l* X: h3 P
[trade-record-all] of customer) > 3 )
! K' A. r) a+ L$ t
[
. ?! M( z4 W, |0 q1 J# Z% iifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)) W+ a6 P6 Q1 X1 q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 N0 z7 M; @' Q$ {( Q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& O9 c; `; Z% R  i  ?
]
4 D$ I5 ^8 G: I, P]
  {6 R: J' h/ n  t/ m) Jset global-proportion note
( h& j/ T$ q6 d% k: k]% p5 X; q' A, m+ F
end- C' _# X9 a1 ~( C# G1 I

. e, t% Z' R  r" O: k5 }1 lto do-trade
3 s/ h8 w' Z$ l' I- A;;
这个过程实际上是给双方作出评价的过程
7 m/ j, q; ^0 N4 Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
+ e1 |- @9 x7 g/ Q5 ?set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 i& \9 K6 J$ t8 z3 |+ V
set trade-record-current lput(timer) trade-record-current* n- b9 S# Y5 J3 C' \: U
;;
评价时间
. k1 A5 e2 o" M- p$ I% Dask myself [  E5 s# I) V! R# c* t! o( W
update-local-reputation
- m% u/ M1 o0 b* I2 Z, x# @- Oset trade-record-current lput([local-reputation] of myself) trade-record-current& [. m' O7 N# |% Q3 o' L
]: s5 }( e' D1 B: s
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# }# U7 u" i' v) |$ N* c;;
将此次交易的记录加入到trade-record-one
5 E" f' H5 Z+ g% v% l) c! @set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ E/ v' z- ~+ w4 D4 I: z
let note (item 2 trade-record-current )
0 z' g3 M4 w8 s; V4 E; rset trade-record-current7 y  {3 ~( W# x$ _. y
(replace-item 2 trade-record-current (item 3 trade-record-current))

: b8 ?2 ~' o3 h8 a$ i: oset trade-record-current
4 g8 Y. k. k" h# x(replace-item 3 trade-record-current note)1 s: k% n* q) }+ d- y! t

6 O6 y$ X1 k5 C9 J$ M+ u
' N, W% u  k4 Z& l
ask customer [
! f: D. P4 @. n+ u  |update-local-reputation$ C. M5 q  k: l0 {+ m* ?) D
set trade-record-current2 J7 |$ P& s) [3 N: o6 X* p  X" M
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
: x1 j- P/ e% m
]' F0 ^5 c/ d. S; E% I9 w- o$ q

' N* S6 i( a5 e6 [0 l3 n- U

+ l( O# i- X" `: L8 `set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' L" l& z; q' @# z

4 q( x' ~* G( p7 \: ^& @set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  V6 p; Z6 c! F8 F3 s- E# G;;
将此次交易的记录加入到customertrade-record-all
+ e9 z( `8 v/ \; hend
9 A/ |6 f  r% \! a2 {2 v: g: d8 o1 q; `' J: S
to update-local-reputation
5 u2 r: L  b( q" s$ lset [trade-record-one-len] of myself length [trade-record-one] of myself
  |1 S0 l. O9 f, N- U3 G5 t# a, M. F
/ J5 `# R# v4 m, x  a+ |1 h6 F$ A2 k  s1 k' @7 `( Q, V, b
;;if [trade-record-one-len] of myself > 3
0 H  C) W# }1 j  i
update-neighbor-total1 r0 K3 v  a* S
;;
更新邻居节点的数目,在此进行
- h3 |7 P1 Z# blet i 35 f- S( g0 {0 ]! X4 T/ n0 E
let sum-time 0
5 `6 Z# |$ f5 k- o- x! O9 swhile[i < [trade-record-one-len] of myself]! `) g$ L& }+ z0 j, {! N3 P5 V% F
[* a, n$ S+ k. A; O, H) U
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  b, p0 O8 _1 `9 G5 nset i+ _1 ?+ |8 a0 k6 [  X; H) p
( i + 1)

' ]# O3 J$ c2 H" g! Q! J]
& k5 ^2 O. u+ \$ `1 |let j 3
" R+ V; p3 E7 t9 _  X: C% Glet sum-money 0. b6 ]# i1 A; o2 r4 }
while[j < [trade-record-one-len] of myself]; s2 j7 x9 o! p! y8 S
[
2 }' D- o! I$ r3 G. \; nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
7 }# A) P8 P& X1 B  J, N  W, Yset j
% D& E- L- F! K9 d( j + 1)

6 h$ Y$ G4 i7 g: O9 V]" A8 D1 ^# f) _7 h
let k 3
! `  o5 N& H9 o* y  E. v; B3 p& Ilet power 08 y# q' Y7 O- |5 X, f( D, ?
let local 0
' l/ ]3 X2 e. L3 j- Fwhile [k <[trade-record-one-len] of myself]9 ^/ I5 l! Y6 M! L) ?
[
6 W* Y) Z/ M7 f; Nset 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) . y! D# x  q. B* e/ X  D1 f& N
set k (k + 1)
  T% ~+ P* w8 e( i; |* Z9 W]" B" O: i' F% x, J
set [local-reputation] of myself (local)9 Y* j3 p5 ]; J+ X) s6 J' T) }) D
end9 `. }3 w& j7 R7 ]) p4 }. @' q% c

4 _8 h) N# T! ~2 p; d( g; mto update-neighbor-total$ b" O- h* F. M8 k
- F: z8 W5 Q$ @
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 Q) E, m2 z  v+ \! ?
8 D) B; X  T6 ]; D$ z+ b' w
4 T- P9 r7 T, T) g
end- f) h2 W% g3 |

% ~9 `9 V4 p! ~* p5 d5 G8 W# gto update-credibility-ijl
# X/ z4 y0 T# X  K$ F3 o6 v7 v* U7 s1 u. D
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
7 G3 l$ T# v4 `# v" v9 e! \let l 0
, a; `: s* k9 |% r" Hwhile[ l < people ], u: m7 K$ g* k: y# v! s
;;
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 T( U+ R* S" h7 S- }" q5 l+ G
[
7 g9 p: C3 g3 F: w9 G8 q, plet trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ w" o2 z9 w6 `3 n! g6 T' i
if (trade-record-one-j-l-len > 3)& o7 r3 P2 A4 D0 ]) a& A6 c
[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
$ J5 c3 o+ m: z' l- Y9 flet i 3; W+ p" i0 H  C: J% l
let sum-time 0
# |* @6 k8 P) ^6 m' y7 c! ?while[i < trade-record-one-len]0 i/ e9 y6 D. N4 w
[  }2 t/ M& O9 t( m: c! n  n4 d
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 }3 Z6 v+ ^9 y6 |set i
9 \: V( j4 Q& f8 J3 T, z( i + 1)

/ d3 D3 n+ E- G7 `6 ~# y]
& O" a: A0 X3 S7 h8 p1 Zlet credibility-i-j-l 01 e5 b. v& e0 i4 N/ C3 L6 @
;;i
评价(jjl的评价)
3 }9 g+ @7 d" }5 Z3 T  K  ilet j 3
$ c! [# `0 o8 O8 x5 Wlet k 4
" G% K, R1 [2 Z* Kwhile[j < trade-record-one-len]
5 s8 k* i# G' r) J[2 b7 B; d% a* `
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
9 d1 ^$ m2 n$ r6 R5 e3 k7 Pset 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)/ W) j/ h" w5 R
set j" E6 r2 y7 @$ O3 Q, e$ E
( j + 1)
  q, a0 A& a  Q+ p* v! K4 H
]3 S  v2 _& Q" w/ x3 |( F
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 ))
8 d3 P& W# o$ w9 W6 E+ B& ?5 w( H) U) m' L. E$ }

  b- k! l7 o8 Z1 x3 ]6 l( j$ r# Blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ e% L1 R. u" U. f5 l;;
及时更新il的评价质量的评价; {2 a  n1 I9 }5 j. e+ b
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: U0 G1 ^& \6 T/ m
set l (l + 1)
  N. z# P: J( ]' ~]
. D  {# ~. C& `* m3 ~9 S3 I! Hend0 g4 |5 R! P% z
1 n, G* u+ y* ]0 ?; M7 u( W
to update-credibility-list( a- q8 p# P5 ]! l
let i 0
# f6 Q& d8 G7 l5 C, j. D+ vwhile[i < people]# G8 _& p# P0 ~9 o( h
[9 w, I1 {0 Y- y! i5 A  r  p! i% R
let j 02 o" S/ A3 A$ c
let note 0
) D7 ^8 r5 T7 @let k 0$ P* Y( O) d. S! w; u% ~
;;
计作出过评价的邻居节点的数目
, f, `* W. x, Ewhile[j < people]1 n5 s5 s; X- O& v( T
[0 ]2 ]  j  A( M9 y1 J  @
if (item j( [credibility] of turtle (i + 1)) != -1)
2 D& C9 O" `# Q4 \6 u( p  j8 I4 q: t2 g;;
判断是否给本turtle的评价质量做出过评价的节点
& T/ C. d; }' g7 B1 z[set note (note + item j ([credibility]of turtle (i + 1)))
% y& f1 m1 Y0 D$ y8 R$ G. w;;*(exp (-(people - 2)))/(people - 2))]
* ~( ^  K, k+ I$ A) A- X- C
set k (k + 1)7 l( Q% i3 {, l3 Y- b, L9 ^
]
8 @: J9 r& [! i4 A, aset j (j + 1), o( a# P: u9 Z; C; b) |8 O
]
$ S3 r1 l8 ^  b9 eset note (note *(exp (- (1 / k)))/ k)& J5 [; e5 D' r/ T* i
set credibility-list (replace-item i credibility-list note)
3 ?8 [4 l: e1 x" sset i (i + 1)- q# }* ^$ j% t0 H
]
; a! Y. B/ }# J6 `) C% i7 u. cend
1 H! e: u) H  ~! |0 g) B7 }
. V# [/ V  P& n. W* C8 H2 |3 pto update-global-reputation-list
" Y( q* n  A9 O$ A& S3 l( Slet j 0
* L. l5 p  d  mwhile[j < people]$ u+ k2 J& W2 W/ k( Z. ~
[* n7 b% q" y/ v5 L! u
let new 0
+ k* D  d3 X7 j) M;;
暂存新的一个全局声誉$ V8 `! }' r/ z6 \% F
let i 0/ w: H( r# E$ Q2 `# ^8 S
let sum-money 0
; }( q) \* N: W! H/ Jlet credibility-money 0
, P# H7 V7 |: `7 C; }& _7 T6 pwhile [i < people]
1 z* Z6 \& ]% T- q- p' ~: f9 ^[( {$ K4 y8 V7 A
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( ?1 F! P. {" \  h, f$ X
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ ~  W' U% d& M, Z$ Q4 h1 C
set i (i + 1)4 T# n- s" R& }9 ]' b1 e
]
+ `7 n' _  F6 B; U1 `4 I  Ylet k 00 w" b4 P' j: j' `7 d) e7 A
let new1 0: p7 K$ y6 V# E. K
while [k < people]
& I1 e" f* `) N% n+ M' ^  w[" J" D, ~. b$ Y
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
; I. k; G# L1 B" _: B) Gset k (k + 1)
& V7 X  Z) ?2 r]2 G" n/ z3 p9 d, b2 F4 S
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 {5 w% [# g8 o% C: I' w
set global-reputation-list (replace-item j global-reputation-list new)8 Z2 X: A/ C& d# @6 S& k, Q7 K
set j (j + 1)8 z8 _; D9 Q( a! b" U& R" L' U" }
], L5 i1 H: Q3 H/ ]
end: q- C4 K- S% k5 `

6 w% o9 Q0 E. B: l
; J2 q5 M- U+ k- O/ Y. T. j$ A5 b" [& ?1 F
to get-color" c5 z! {9 J, l% x  H3 J
; y/ g& Y* _4 n" j
set color blue

. R, v5 z' e# t* Z4 m. J1 ]end" j  z6 y! v$ E  S5 O

# R' c. K2 r3 k2 |2 Sto poll-class
# {+ l4 h: f& F2 m6 \! b# @+ gend
) d9 V' k  F- j& s+ r" ?+ _, Q2 |% L. X" m; i
to setup-plot1
3 i; m; Q$ U$ B0 s* {; h; o. E# s/ o! w3 P
set-current-plot "Trends-of-Local-reputation"

- R; I6 e- @( u3 ?0 m7 ^, \# l/ C' ~( w7 k% {. d  ]
set-plot-x-range 0 xmax

0 _% u% q  H5 P
5 x, g( F/ w8 Qset-plot-y-range 0.0 ymax

3 @0 S& {9 q( {; U( p6 ~end& s( G5 u  C7 _

+ e# d/ i1 v# [  M# Z) E3 J% C9 tto setup-plot2) G& F4 P3 @; q5 P+ y1 l' _& Z

& q  C) v" {" W- e. nset-current-plot "Trends-of-global-reputation"
' ^9 e6 V  d2 ~2 Y& d

1 L7 t8 ]* X7 ~' L! a8 j8 iset-plot-x-range 0 xmax
6 V, h# w7 b; ]  J* w& U

* [" y7 P* U; kset-plot-y-range 0.0 ymax

( K  b- J! }3 a9 c* q9 f( u! Bend
4 ?, T8 c! b' o! p- Q8 G9 ?- j0 t: _4 p6 J5 F
to setup-plot3
! ]9 ]6 D. g% R& B/ d1 I8 z- q9 S
- h' @" V7 `+ {0 c4 u: Yset-current-plot "Trends-of-credibility"

, j# @. e1 J) r+ g% Q) S  n  F7 ^3 V( S
set-plot-x-range 0 xmax
: m' [" Z5 z6 e% ~# B" U- l

7 p  h4 I) F( Y9 Y( kset-plot-y-range 0.0 ymax
( X" d" @% R: g/ L1 B2 ~2 Q
end
9 e! M% H5 C  I6 l' r# V1 k9 n9 O1 S
to do-plots
" @& \2 ~' }0 J/ Oset-current-plot "Trends-of-Local-reputation") O. D1 a; g1 T0 p: W
set-current-plot-pen "Honest service"6 K0 p6 L9 {$ w4 W* Y' ~2 A
end4 H$ F. Y3 W* Y1 I5 n

' n$ L: X( t" t8 j3 F! |' r[ 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.$ e" `4 L+ e; X0 W2 E( ]0 @

9 {  U0 t$ K: t& F$ A6 \2 _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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