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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:
. c% ~' B0 I( `: mto do-business
1 }1 \" a) W3 c rt random 360% ?( e  ~; N3 ^1 G) O
fd 1, \3 `' w- ?9 D% @
ifelse(other turtles-here != nobody)[
- e5 r3 N1 K2 w8 r2 ]# J6 R   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.
, W4 R" t" T+ ], h   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . F2 Q- }3 c& V! p9 B' S5 ~' k, M3 D& k
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: N5 f) d, W6 ^1 r" [
   set [trade-record-one-len] of self length [trade-record-one] of self
3 ^# |$ E9 R6 x# {& U   set trade-record-current( list (timer) (random money-upper-limit))
1 C6 h" ~6 j) c% y, q0 b1 }
  C) b3 {# W# U0 C( A问题的提示如下:& _/ m0 N+ a( g; l  \, q
7 E- C0 `5 a, J
error while turtle 50 running OF in procedure DO-BUSINESS8 L3 y5 ?1 l$ ~: V0 U/ T6 ~) B
  called by procedure GO/ D4 ~; R1 t9 k+ Y6 D
OF expected input to be a turtle agentset or turtle but got NOBODY instead.+ j0 J9 F; r8 S- {7 F0 R% V# y
(halted running of go)
" ]5 m% Y  X8 q- P' U$ n7 Z* S$ {" o( N( j% @! V$ R; K9 B
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~~& j0 r4 n* Y9 v% c' A
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
) j* |1 p1 I0 |- mglobals[
/ X3 ?9 z# k! }' F3 g0 zxmax, J; f  g, X& X  @0 R- ^4 R* d
ymax
. S5 H7 }$ U% Yglobal-reputation-list# s7 k( Q, w  j

* Y3 ?- h5 b0 I) q/ [* o5 Y: I;;
每一个turtle的全局声誉都存在此LIST
: ^" v; m5 H2 `( u' Z9 g" w$ Fcredibility-list3 T- O' w  |0 _6 b+ R, w
;;
每一个turtle的评价可信度
' o( y# h, F" z7 |* |9 N# whonest-service; J1 ^; R, |* Q2 h
unhonest-service
: H" k# {7 v+ R, P' a# ~, I& Ioscillation
* I6 A, @# ^( L% H- D( grand-dynamic5 F  T. c9 O, T4 a2 H. ?& h/ b& N8 b
]
" Y8 @: I& Q! J% ^2 L4 S/ B1 O3 T
7 g7 u6 n5 I, M( U+ f- m' S2 C3 r" U8 sturtles-own[
4 }& r& M: E/ S8 C6 ?% `  n4 Strade-record-all
" a( r4 f$ x- t8 Y! @;;a list of lists,
trade-record-one组成
- _/ `" Y" W& u. C* p, S: h( D7 ]trade-record-one5 U/ z) I5 R5 ?
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ }- J; v& V# p5 x3 ^/ i) k2 l
/ u5 \" p2 ~$ z: ~;;[
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]]. i+ g/ F8 x& @! j9 y
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]
- t+ B) v, B  c+ n& jcredibility-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
: ^) v, o8 a" D7 mneighbor-total
; v7 g6 E& S: W;;
记录该turtle的邻居节点的数目; ]' I/ o/ J/ i* H; l6 P  ?, `
trade-time1 p8 c' a' q, `. S0 S
;;
当前发生交易的turtle的交易时间
) ]9 V6 @! M5 u, `appraise-give; }7 Y8 T2 @" S; ~0 e
;;
当前发生交易时给出的评价
; ]* A! i. a" c; J( L) U3 A! g9 _; Kappraise-receive
& I" D1 o. N  D1 g;;
当前发生交易时收到的评价
4 w+ p( |, v4 `3 e# Q' b9 N2 W' \appraise-time2 [7 A" }" A/ B0 V4 {: e! X
;;
当前发生交易时的评价时间
# O# R. o3 F" U9 y# Alocal-reputation-now;;此次交易后相对于对方turtle的局部声誉+ o6 J5 M' o- X9 r2 q- E
trade-times-total% n, C: G4 D; y; e3 n5 J
;;
与当前turtle的交易总次数/ k" N) V& l2 V4 i% K
trade-money-total5 D" {. [7 T' Q, }
;;
与当前turtle的交易总金额
. t# ?. M1 h7 D1 ?% c7 }! ilocal-reputation; g6 P# Z& M% x: c# w& U: Q; ]2 c$ u
global-reputation  L5 T2 i: T0 \7 q8 T8 T( `( ?; j
credibility/ m' t& h; v$ [
;;
评价可信度,每次交易后都需要更新: j  Y2 F' w$ g9 E: P  k! p9 L
credibility-all
& ]8 L' O4 J3 J;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据5 ^! A0 m5 H' W' j1 k

7 B9 V$ @( @6 e  T; P8 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
! j0 ^. j, l  }  T% qcredibility-one' Y$ L+ p  M! w3 f+ c# ^- z
;;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people2 X) r. \8 ?' S: u
global-proportion4 P$ m& i0 O* k/ X) S
customer5 W/ n5 @/ A; t7 e8 r
customer-no' q3 o. ~/ B) [: {
trust-ok
' }3 o  T, k7 N# Y. I3 strade-record-one-len;;trade-record-one的长度9 \  t  ]* s0 X! M  I' \- p/ v5 y
]
" a+ y3 J6 O: [. E3 i1 _2 C8 d& {5 T. N- R1 }) |) o
;;setup procedure* K  e2 \9 t: U2 z8 L3 L
( g: G% e4 \+ S2 \; T
to setup% y2 D* [6 c& f# b

8 F) S) R' ~* R5 Yca

6 k; g5 z' d# [: I6 n- R5 c. U4 L. P! Q+ @, P, E
initialize-settings

9 [2 j9 j1 S; W% R: h% c
0 [4 O2 P# s+ `/ M' q* C7 kcrt people [setup-turtles]
, R9 F, f3 V% K) {5 l; Y2 h& u
8 F2 H6 d) H8 w; }4 M
reset-timer
8 ~, w. l! Y2 [2 q% Q

( o; k0 m+ n: u& ?poll-class
: i5 u& \8 b% }; _6 q, x. H

# X7 L5 x) C; S7 ^, P/ k3 y" Rsetup-plots
4 L" K) w  f0 G0 f. F9 {
/ @, u4 Z7 _- E1 G5 i
do-plots

8 |9 i7 [4 b5 |5 U0 Y. U1 c$ cend
4 m  Y2 Z0 k. v: {: s4 t2 K! G7 q' b4 Y" [# s
to initialize-settings3 K. M( u  B- \+ _: I1 y
1 v, d( W# X# u; Y8 S
set global-reputation-list []

3 T5 C. i' @( I5 \( |
. E- [& A  D! ?6 {: kset credibility-list n-values people [0.5]
1 |" U) e: S% X) ~
* D' @! \& }7 @( W- X/ W$ r
set honest-service 0
( a/ {9 D5 @9 g4 l$ E

- E) v- y* Q0 `$ y+ L' yset unhonest-service 0
2 b; S$ _" m6 y* S9 M6 I' ^* O
* h0 R$ W. W! u) e( X! a
set oscillation 0

$ t7 v- t5 b3 E& a7 B  L: K' F8 T. |* K1 S4 I  B; r
set rand-dynamic 0

# r0 T- y2 ~* ?end
& r  y; ]4 ]6 U7 L# g: @8 O8 S( H
% r5 _  _! d- `. F1 i; S! fto setup-turtles 3 D( Y4 K6 ~5 ]8 o0 y! p8 ?6 a
set shape "person"
. X$ c$ l9 z0 Msetxy random-xcor random-ycor+ R$ z% u& Z$ ?0 t
set trade-record-one []
+ D8 o5 T0 }' N9 E, ?# |

* h. q3 G4 c, _& `set trade-record-all n-values people [(list (? + 1) 0 0)] 5 W. j, \) n" y+ Y, U

$ e6 k% j3 m" e5 }$ k1 B. c' X0 Jset trade-record-current []
( `7 h4 L- k/ Y7 s0 W6 k5 Hset credibility-receive []. U: D9 ~3 s# R
set local-reputation 0.5
) Q- S0 e( m  Dset neighbor-total 0! s' O5 t" d0 |* ]
set trade-times-total 0
1 T3 _1 a! C, V% [. _- l2 bset trade-money-total 0
- S0 a$ N5 q# P9 g5 |% n9 ?set customer nobody5 {; H) l  B5 _" k
set credibility-all n-values people [creat-credibility]
1 B5 g6 M5 m# Rset credibility n-values people [-1]/ Z+ t  N- a) q- o
get-color
" O$ r% X5 r8 Q) T1 }/ I
4 n! N* K, ^' M- G, q
end
4 M0 E& X( U7 T3 \, m% M
% T( M6 b' M4 x8 e7 Cto-report creat-credibility. L, }  H; ^/ a7 B/ C
report n-values people [0.5]8 J# x8 }2 r9 e# S& S6 m+ Q. \2 n% j0 K
end
5 y" l* Z$ m& D4 F) o9 u4 B/ @; P; a5 j- B, \/ y
to setup-plots& ^) J8 G5 G$ r' V9 v
! }6 w2 X% A* V0 Z9 R3 J5 g
set xmax 30
5 ?9 J8 H& C. M/ Q, {) o
# q$ l5 a8 _! l8 j. {& V3 P: U+ j8 T
set ymax 1.0
& {$ I' p' P( F! `

+ H  y3 Y2 e. [9 n- U6 X# \5 x, Dclear-all-plots
4 Z6 r* {  K0 Z! U1 T. ]2 I

" A! R$ M0 ~, K6 X, S" Zsetup-plot1
% e5 M; L( P$ ]& t

- f! Z. s- P/ H9 Z2 a# D/ X* _' {setup-plot2

3 [- g. l- b& u# ?
; d0 i6 ?  m+ Z4 \% A) ?setup-plot3
! e* K; Y! \6 B! `
end
0 L3 Z" n1 ]  F# S  T  t
! j1 V4 y! n" b;;run time procedures
1 j6 w. Y$ w! q) L, Z) f: B/ t; a
to go" ?. j) A! ?; r2 r; T, i
6 V1 Z, G% Z% K! R) S! d! c
ask turtles [do-business]
7 ?  D2 }5 A1 Q. L( q2 ~
end
  o& T# ], G' R: z! ?
5 P1 N6 @1 u7 v0 o) gto do-business
. P: f: D8 F& @  J* c  H, a5 z
2 B5 H6 L$ n! I8 N' @: H: ^

; w. ~2 \+ L& R6 D7 W" j! lrt random 360
- {- c9 c( j8 {- x( G/ L

7 A) l& w+ K# C- [  sfd 1

" Q# i2 v$ L9 {# \( S/ _9 o6 p5 g5 o& @
ifelse(other turtles-here != nobody)[

9 N  g  E+ C2 ^, Y
5 K( d- `' o4 h+ i  B1 Rset customer one-of other turtles-here
( N/ M# x$ C5 z0 P: \

; n# P, W# F1 P6 r$ ?- u5 A9 ~;; set [customer] of customer myself

" o, I" p2 B  k% n3 f  w
  `* K5 |3 w( v3 ]. F8 `9 j) Kset [trade-record-one] of self item (([who] of customer) - 1)
% x7 `8 r% @6 I) m' M8 J[trade-record-all]of self: P3 A9 X- [' c* C6 N: ^
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
9 |2 E5 U% P- ]) H7 q# A) `9 H: X
* W* a* F) H) }
set [trade-record-one] of customer item (([who] of self) - 1)) w$ ?) @9 i7 u# C- o8 o& g& h$ E
[trade-record-all]of customer
( F; ]" P6 R& A: q% M

% C, t5 O  s3 x" xset [trade-record-one-len] of self length [trade-record-one] of self

  W6 ]. m+ V2 I$ j6 I- v# D6 V0 ]2 H# D7 F1 o4 |5 P+ L
set trade-record-current( list (timer) (random money-upper-limit))
0 z* k" d( ~+ q, t; [' r! B
& D# ^! s$ W4 [
ask self [do-trust]! K( i2 c+ F5 S/ f- G
;;
先求ij的信任度
( l) I1 E' i. ?& b$ @
* |1 m, K. G6 u) iif ([trust-ok] of self)
5 [' T! ?( U+ Y1 j; }6 @, V;;
根据ij的信任度来决定是否与j进行交易[
& V+ j# w# ~# eask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
% d0 _5 u+ H7 v5 |* K* v
) b# ^/ `; p* ~& l2 y[

" S7 T8 Z+ I6 B
4 ~' K$ N$ J" i- {do-trade
$ r# b# I7 }- p$ Z5 _0 ]
+ A. _% }; [' O( s: f0 ^( n4 j# R# k
update-credibility-ijl
+ h( N; v' H3 ?0 q% C& o
4 O$ i  S' A- h5 F9 o. b( ^
update-credibility-list2 J  x9 `/ F9 G4 N
8 n: ]3 ]( B  y$ ^2 j5 f

5 Q8 N* B+ o" t# r3 P' F& ~9 Pupdate-global-reputation-list
2 l9 g. ~* [' `8 V
; |" _1 P$ d0 k3 D1 n" g  Q, Q
poll-class
/ g* v9 G7 B9 }* H1 O; e

8 \1 s9 H3 x5 eget-color
4 m: P" O1 }0 m" C* z" }
; H+ ~3 c+ L9 H8 J( v
]]
: d9 }2 M- M/ q! e6 }  W1 p8 V; l- x' h
;;
如果所得的信任度满足条件,则进行交易
) p( S, }( O# R: }
* l- C7 `3 N/ C) }$ i+ }[

& V9 x: d3 T  z( I) J8 A! h
2 W% X- j1 U9 I+ a/ A7 i# Drt random 360
" ~* y6 E9 g$ h$ t

. i" I( v) s; {% Hfd 1
4 V( v) _0 o8 z6 {
! l, Y+ g/ u$ V
]

: `4 D. B2 \! w6 y
7 z0 r  N; F* B) {; w# xend
& i: i, Z$ d( r4 w4 o  q- R

7 L3 X. Y! |  S$ p5 S8 a1 h# sto do-trust & V5 ?* v6 T# E, t- R+ |
set trust-ok False$ d2 ^$ u* ]6 [/ a3 k

! H- b9 m% W1 q% B

0 g* B/ w3 T: Llet max-trade-times 0. C. A9 [5 L+ a) l# V) w. _6 Q
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 X; R& j  ?& u6 clet max-trade-money 0
7 q, t7 N: `+ pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 Z9 K( `& g9 J  R; K  h# X. ulet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))' o6 a: K- j, X' y

2 B; m% m6 ^" d9 g! a& D
% D+ s: R$ m% L4 I/ Z' {
get-global-proportion9 o0 h1 t7 k% j. r& K: {, _
let trust-value* f% X0 d( u  b$ X
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)
5 [  Z* o/ H) a. t
if(trust-value > trade-trust-value)
& [+ v9 J3 d. Z' }+ L7 |[set trust-ok true]
0 Y8 K( z* v& ]2 Qend& K: o* E3 E/ K5 x: f
% |4 g; z: e- E
to get-global-proportion$ C7 ]. L( k+ ^" h5 S
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! m  m$ ~- {* L$ }
[set global-proportion 0]- y% s3 Y; L2 `2 H. v8 B8 \2 ]* l
[let i 0
' l$ Z- u+ q5 N) B, `' ~4 s. rlet sum-money 0
' Z) S8 B* Y) X. `while[ i < people]' H: C& W" a0 J$ I3 c1 U; s% O
[( B: V1 h& r# h9 r
if( length (item i
' {. R; q( ^  _[trade-record-all] of customer) > 3 )
5 ^( D1 _+ ^7 x2 O) |
[
7 W9 e% a+ e6 X: O- _set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; Y$ c# \& B/ a5 k! D]4 F3 U. Q! m/ F
]# y$ W+ I1 q2 U$ d7 c# P0 `0 A
let j 01 u2 S2 a4 g7 y, A/ H* h
let note 0- z2 J. f* v  |8 [" z
while[ j < people]
  R& {. P2 z+ j: H; y% O/ y[8 b% Q5 o1 j- z) c: s; f
if( length (item i
! z5 N# j/ D: W6 Z( Q" u2 u[trade-record-all] of customer) > 3 )

( c( V+ Q* b% R[& }: s) U  H6 H  `
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 i  L  F- U5 r[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  `2 L: g! {* P5 v( H1 ~
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 K4 J: n! F( V4 D; [
]/ ]+ O# `5 w. [+ L/ n! [
]
3 R2 w7 V5 R0 d) P$ {set global-proportion note1 C5 t( i; r7 r( [# {
]
# E1 o% {5 }6 dend: @+ e: s. d1 t4 ]+ g

, }% O' u, c  O$ R! L3 Rto do-trade
: g4 u- ~% W: V0 E;;
这个过程实际上是给双方作出评价的过程
" H# F1 d7 n  Z9 m2 F0 R+ M* Eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) b5 a/ i( I0 C* U- _& I# k3 ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) O, G7 B% _$ e$ x3 }/ {/ e) l) D: s! _' ^
set trade-record-current lput(timer) trade-record-current
+ |0 x  _) @$ B, [- E;;
评价时间3 j# o; f( D- |
ask myself [+ Q$ W- r: I- T; U2 v% ]
update-local-reputation  _; l% K# p( v
set trade-record-current lput([local-reputation] of myself) trade-record-current* d: e4 |1 Y* L4 |, I& T% H# q
]( N# u' D" R% i! S* y0 _( u
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# n1 N4 C" H, J6 |$ B7 K
;;
将此次交易的记录加入到trade-record-one
% |: k, S9 S" U" q2 X7 ^6 v+ Vset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' m0 m) _" i: }+ ]2 X7 e+ N. e
let note (item 2 trade-record-current )
  g3 @8 c1 I4 o7 I1 @set trade-record-current, i# a$ b* ^8 h: |- o+ f* u& f
(replace-item 2 trade-record-current (item 3 trade-record-current))

* c( G! }3 p  z: l  j! Rset trade-record-current
! J2 X. M6 s9 b% w% c9 v(replace-item 3 trade-record-current note)
& }* g2 u: [9 u& k# ]9 f! e! R6 \# c5 Q0 S
. P7 B& G; c) [' ]7 a' P
ask customer [% W. T- d6 U# }  t' y+ I
update-local-reputation' V" q3 s3 d4 p1 r% A1 r
set trade-record-current
. c7 m1 N0 B$ Z6 j  u2 s(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
% k! o4 b) B2 H! ?# E8 O9 L, D
]
8 _( y- F, m9 M. ~6 F. J! t& W/ ~: v; U0 `! u

0 r; {+ S$ J( f, b1 T0 Uset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 P$ j& @, u! l8 X! _" H# h" _

( l& o9 x# \, i8 g8 {4 ^* G7 z( Uset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# |% O  I" ~# g1 |7 {& [4 z' O
;;
将此次交易的记录加入到customertrade-record-all
! d# |( m! d7 v/ l+ w; I1 Hend
$ }9 Y% l2 P; d1 y1 O6 `
+ [1 ~* Q8 p+ Rto update-local-reputation
2 v7 f; H% G, T* tset [trade-record-one-len] of myself length [trade-record-one] of myself, j% R- W/ q8 Y* ?
$ g' R' R9 h9 `5 M5 V4 ]8 f; U7 e- ^

8 o4 B  i4 N  l& Y; F8 K;;if [trade-record-one-len] of myself > 3

9 R2 P& o0 v9 s; \) `update-neighbor-total0 c- j  D7 P* f- G$ y
;;
更新邻居节点的数目,在此进行
# P3 I7 c: r! l- H/ k3 Elet i 3
$ m6 W, C6 B- N4 H2 Plet sum-time 04 J- m5 h& Z( l- A% B
while[i < [trade-record-one-len] of myself]
9 w3 Q( r$ x8 Q% X- `[
  b4 _( t9 k# ~7 Cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )  Z1 @: M1 U! O7 L/ }
set i( o/ K  j$ S" ?- c- o
( i + 1)
! w# M2 C) e$ Y
]
( u" a( S. d' k& j" glet j 3
+ L9 H1 f  p3 p- Elet sum-money 0* C; K+ G* q* ]0 N, B, \$ M
while[j < [trade-record-one-len] of myself]1 a! o  z% B: y+ l. S* c
[1 P6 ^& @/ |# a% T
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)9 j1 v+ T. p. x- k  L, X5 J; H
set j
4 D# P' f6 B( W' O6 T( j + 1)

0 R. I0 P3 o0 {; x% M$ r& K]
( {* `  \. A  V. R8 }( xlet k 3
  |$ n$ _, R7 N. H" L* u9 Jlet power 0
, L- ]  {. q6 @7 Llet local 01 E$ _1 e* Y3 j* N
while [k <[trade-record-one-len] of myself]6 T* S8 M5 a5 S( f' z9 d  o' |
[
6 y9 B/ j+ S6 Q) X: v  _* E4 Q: ~2 ]set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
2 O7 D7 @% w" n1 c  _2 }9 w& Sset k (k + 1)( [. \1 W3 S1 h/ `' X& T
]
: Z% g3 Y% V  L7 P. Mset [local-reputation] of myself (local)$ M  c8 N5 S9 l+ H* j2 X; E
end8 C( Q( L0 m) N& f# J* p

4 k: L3 ~1 }5 ~to update-neighbor-total
8 e. l, g: K+ u8 `; S1 j
# o4 }& N2 w7 L% G5 a0 q. @; Cif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; p) i/ H( _) Z. ]2 F
8 F8 d, P9 l4 }+ X2 @+ A+ U

( `, K7 _2 F0 H9 n* B! ]- uend; Z3 ~1 Z, B* n/ _9 C1 I; e

1 _- Q0 ]- K3 Rto update-credibility-ijl 3 h' x8 Z, M" |3 {$ e/ G
1 K, U( R! r( 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。4 Y: b9 z" E* }' P$ I3 x4 H
let l 0
+ T7 P( g8 y, mwhile[ l < people ]0 P1 q# U: L, j4 \
;;
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5 A( z4 i/ j9 W+ n2 R3 \3 |
[
( E0 ^3 E; f% c: Klet trade-record-one-j-l-len length item l ([trade-record-all] of customer)" r; D* m1 X9 ~" t8 M
if (trade-record-one-j-l-len > 3)
8 s( @- C* c, N% @6 k/ }8 N" J6 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-one2 B; _' A% R: u2 @
let i 3
4 O. b/ _& R! m; l6 Y( [' plet sum-time 0
# g4 s/ A7 k, Zwhile[i < trade-record-one-len]
* [# C) r  h% B1 ]$ l0 B[/ }% a0 I" j: E: x' M. \
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 n+ K# G. I1 G. W- U4 Y% Wset i) K+ O' @4 M( l
( i + 1)
* D2 a) O3 d) Z! D* l
]
. q& b1 j1 E+ n* d4 F, Llet credibility-i-j-l 0
" h! c0 x9 n" Y, \7 U( @;;i
评价(jjl的评价)
; ?6 z; X0 w$ T, S7 e" Rlet j 3
6 k+ g: z& D0 clet k 4; M  v9 ?( d) V( Q& Z
while[j < trade-record-one-len]3 I, T, c! c( Y. t
[
( [7 d& `9 W# D& }% Iwhile [((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
) l5 T1 X$ Z5 N6 x* vset 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)! V6 z6 }" j4 K- W8 _: L
set j
4 v1 D) A4 X( V& V% n3 [; Z( j + 1)
: ^$ f/ [' \/ \- K+ w. c) D; M. g) @
]% x# O0 z; E+ ?# c5 j
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 ))- J& I8 L" o$ u) @' W% `
: J/ p0 w) h* |0 r1 r. n" C
5 x7 h6 X) u8 R4 l5 R  r+ \3 R
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 w9 [# P  ~0 C  ^8 D
;;
及时更新il的评价质量的评价
0 I; B. m6 R! m. b# Yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 f' O. w* M1 c: }& lset l (l + 1)
- s1 D; t) D5 [! |]
, i* n+ z1 X, zend. @/ b; l+ V. \2 A: q
) E! t) R* n6 y) m) T2 }  J
to update-credibility-list8 d( y) G) j9 [
let i 0
1 G3 J8 P  \. b$ hwhile[i < people]
  O7 |3 I/ c- A) S[
2 ^# B1 `1 |7 y  Rlet j 0' Z) F. `0 g- N; B
let note 01 Q9 U+ o% J4 W8 j) x( ?3 d
let k 0" |9 B1 R7 f" y1 t' Z
;;
计作出过评价的邻居节点的数目
/ d# |) |# X' s5 R' t) wwhile[j < people]- T) c( b/ S" u
[5 M& a2 M# ^4 G$ z; e$ _7 k; {5 M
if (item j( [credibility] of turtle (i + 1)) != -1)- ?. U0 K$ n  C; W
;;
判断是否给本turtle的评价质量做出过评价的节点) e- s# y  I7 }$ C7 v
[set note (note + item j ([credibility]of turtle (i + 1)))& C  P5 M1 ^/ r' y9 @" y; P# z
;;*(exp (-(people - 2)))/(people - 2))]
0 {& S% y  X0 j, A
set k (k + 1). P1 l: C5 Y9 G3 Z0 q0 N
]: Z. \! _' y) g* Q9 b
set j (j + 1). N- m+ Y5 q% W. z
]4 H* O2 Z' B# l1 ?  c
set note (note *(exp (- (1 / k)))/ k)
( j( J8 S+ f# N/ q. k3 Pset credibility-list (replace-item i credibility-list note)) u0 u0 b  I% r  q1 ^
set i (i + 1)
$ I( ^7 }1 J. r9 T2 \* _. P]0 }9 P  q( N& Z/ J$ Y
end$ M8 k8 y: Q: E' D' @
# p- Q* w# l3 b) L+ u8 J9 d
to update-global-reputation-list
4 [0 F' V: s/ y) i" {; Z( t/ mlet j 08 C" ]7 s2 g$ V) t0 ?6 m
while[j < people]
1 w6 N' L  E+ L/ j1 r[
$ d7 W/ S6 m1 ~) _' Olet new 0
- A9 p4 a; p& v$ M2 o;;
暂存新的一个全局声誉
* N! X% J# n+ n& ?let i 0
# J; s, ^" Z) n1 ]9 F& glet sum-money 0
7 ~" a& w. Q! l9 V, |. L7 olet credibility-money 0% Z" j1 t& ?0 ?4 \$ z- x
while [i < people]
( ^$ ?9 @! H5 d; _2 ~# R. j[
) G& U) l; E# G  w: Nset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), Z5 u! |: h" b5 w3 D  X
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# N5 u  |, b3 N  l! g# [3 ?
set i (i + 1)
$ O+ a% }1 }8 ^( v7 Q* v( i: `]7 G/ f1 [5 O# D/ T. ?+ E, M' {! s5 W
let k 0' \& G; q4 t% j
let new1 0
3 K8 [% r0 W. b0 L4 hwhile [k < people]
  b+ Y' L2 O! l; {- n& E[
" v( J* N% `. Y8 Jset 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)4 k! Z2 z- p6 ~- _5 j
set k (k + 1)9 b" s2 E* v2 ?3 k. }9 ]
]
. U# K& D2 J  F& {9 Q- n% p+ hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # _2 S9 L/ k0 T7 a+ M' s5 o
set global-reputation-list (replace-item j global-reputation-list new)
' W/ z# ]6 p3 \) E: Sset j (j + 1)& t6 c( `* ^& b1 n1 F
]: f5 I% c3 c5 @4 m1 K; B9 L
end
" s5 P6 J- |% [2 f- ^9 p: D$ I* U# b
  L+ v( n2 W6 R$ c$ g5 @
$ b0 U, w/ ~. A4 e/ M% Q0 i; U3 l: E6 D. {
to get-color
; |( s; K  k! F2 B2 M5 F; I$ S- p& ^2 B) j. ]5 M- F4 e
set color blue

! j! d" E, T- g8 E$ ]end
& b: B% Z3 M% X5 H1 t. G
  e/ M3 Z# F+ j% u6 V0 ?to poll-class
, U! Y. P4 l' v, jend
- |3 A1 b! Z, G. E* f. S; q1 ~
$ q  D& G! ^& R6 P& ~; Qto setup-plot1
  E. K( f, R+ J& Y& B: I; h  ^4 ^/ h
set-current-plot "Trends-of-Local-reputation"

% {' O: u) |+ s# P
' y4 M6 U" r2 o8 U, iset-plot-x-range 0 xmax
8 t* E. n) w- ?: {
+ G( G1 f+ z7 O! V
set-plot-y-range 0.0 ymax
& w7 f. |  V5 \7 K0 w/ Z" w
end
3 J* |! h: J( q
  a1 q% Z( z. |: ~2 {to setup-plot2* G9 h) \$ I+ ^8 a7 g/ h

# ]! _: e' R) O6 s, R6 s' X8 s) p$ e- |5 mset-current-plot "Trends-of-global-reputation"

5 x; b8 |; B7 v; K, y0 f
) K: J* @5 d+ K: iset-plot-x-range 0 xmax
4 ^* V6 v6 |7 |
& ^% s$ Z( w) y$ l% k8 H
set-plot-y-range 0.0 ymax
" S5 w" q( I1 ?/ K9 ?- F
end9 @& j- {& U5 m% Q2 U- Z: R
4 ?) P# p' _! i- Q4 m7 M3 ?5 x7 p0 _3 w
to setup-plot3) l* ?5 t7 p' s1 Y' ~$ u
5 Y3 s# b9 D  z5 |7 t# w
set-current-plot "Trends-of-credibility"

7 [* C, J1 w% ~% \# n5 t8 q( U1 u* D( K6 E/ f
set-plot-x-range 0 xmax
+ p% g& V- v* j9 k2 X3 Y
9 P( B" ?2 ]% c
set-plot-y-range 0.0 ymax
. J3 @3 I( e& l9 b* E6 ^
end
6 E) d8 A' v. w6 h/ y+ w2 p; g) [9 H* k5 ?% k( D
to do-plots- o/ T, f5 S& H+ ?
set-current-plot "Trends-of-Local-reputation"
& N* L1 f0 @" G& _8 Y4 n( J, |set-current-plot-pen "Honest service"2 P" b5 o) L7 g
end
$ r" d+ S2 _2 b, z% U9 [, p$ X  B
$ M( @. C5 k% ?) ]  Q[ 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.( t, g1 u3 L. j
- P' J6 F+ t; B  K
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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