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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:% R+ V# }" G6 U" ^0 U. F9 t
to do-business 4 l6 A8 `3 {3 l' Z
rt random 360, W# u5 J$ s+ {' {. ^7 ?/ i) V
fd 15 V/ E7 ]$ ?" |+ W$ O. v
ifelse(other turtles-here != nobody)[
  J0 g# @! @! J# ]   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 e- B' N3 t* f/ w  F) Z# v* x+ U   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* G6 Z% c( c% ?' y# q: B   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer3 x1 V# |2 o, y8 S; A; T
   set [trade-record-one-len] of self length [trade-record-one] of self$ ?8 I3 s! K! h+ d
   set trade-record-current( list (timer) (random money-upper-limit))
7 t& l4 I2 |) w1 @5 ?$ Z6 R2 d2 ]0 B& j: y, q8 B5 q$ s
问题的提示如下:
( h8 A7 L$ S$ d6 ~% E( Q$ Z) x
2 W- E7 e- Z0 o2 r/ n& Lerror while turtle 50 running OF in procedure DO-BUSINESS1 B1 B* _/ ~$ y. R5 [6 e, N3 s/ o
  called by procedure GO
! Z' A  Y5 m5 L; L) [! WOF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 t: b9 N1 h1 R$ c5 `4 N
(halted running of go)$ x$ u# @2 p6 H( J

. W, H7 L: h& R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~~
" o3 l/ I* @( c0 F8 W0 @* }4 c  d" v3 c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 J+ K  T* N! N+ c% N0 aglobals[: m% C6 \% n# _- ]& Z7 ?
xmax
" x. G0 L# K! V) V3 v, R% @ymax
; L- z" e/ r2 `) T# t# ^0 Bglobal-reputation-list& L0 V- S7 C, [+ g6 c9 D% M* c' P

% S' G# S! r1 @) ?2 I: n/ L;;
每一个turtle的全局声誉都存在此LIST  E1 C8 g% n0 V* N  _
credibility-list
1 \/ x1 o' C' R" D- m+ Z# v1 ?;;
每一个turtle的评价可信度
; y& L0 u$ L8 ?( B# _, r  W5 Khonest-service
  \; o6 W$ R8 t* n: v$ N3 ~unhonest-service) C, Y" \6 K, t# O* k
oscillation2 F3 u3 A( }0 k
rand-dynamic' c$ S* W) r# x
]
% o5 g9 _  N& H6 q" p! s% R. m; F1 `7 I2 c- u* z
turtles-own[
5 N8 h- v: ~( ~# U- ftrade-record-all) y& o7 f; `6 j- d3 {' E
;;a list of lists,
trade-record-one组成) k- |+ a' i# n8 H
trade-record-one* p- ]" `# ?' V; s( 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/ }2 V% B( \6 b" K  E8 P: F1 p/ |

7 @8 z* C. n- k  A- Y8 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]]
0 u  l( i% l, Q& o- s  N$ mtrade-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 v% N; X( m# Wcredibility-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
( D9 Z9 f; s  j5 L6 t1 aneighbor-total3 [" {$ c; R, K
;;
记录该turtle的邻居节点的数目
5 [5 L# ?0 I. [' C( p$ ?" Utrade-time  H* M1 X) h! ~1 m( @9 f( E. M
;;
当前发生交易的turtle的交易时间
; L  l# C2 o7 R3 l' v9 A3 Pappraise-give
$ [1 R+ R  y6 b' T' y- o;;
当前发生交易时给出的评价. I* p  X2 z1 ^/ A5 ~9 ?" A
appraise-receive
  F4 q- G5 H, ?;;
当前发生交易时收到的评价1 z7 o5 k0 V# v3 q4 e0 P
appraise-time7 `# v% _0 C+ P: {
;;
当前发生交易时的评价时间
9 h: y7 v) }# L" Olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉- K0 w+ m, u+ a' A+ I$ e
trade-times-total' q1 X" g( e2 p% g
;;
与当前turtle的交易总次数
5 W, n# |' i# j5 v, ftrade-money-total
% K' o5 I; J: e6 D" C9 X;;
与当前turtle的交易总金额9 r, M7 @$ _& s. a3 F3 r% t; K
local-reputation
9 ^8 |5 }) G+ {- ~- z) V' Z  Sglobal-reputation
- s- Q* L6 O: I9 {credibility
( q( B" {5 w" h$ _;;
评价可信度,每次交易后都需要更新
, H  v3 `1 P$ P6 Ocredibility-all; K' s! e1 n7 n  Y. o
;;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9 c0 R3 G* p9 O" W: ]6 k: e

+ F% h* P! d. M' y;;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, R: \4 L" A  |8 h" w1 i2 J
credibility-one$ r4 r: O- ], Z$ |; K
;;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
5 x! i" G( _1 H* l# f, G8 [- Dglobal-proportion1 l( K- j& E+ @8 B
customer6 @( T) h6 Q/ _, L: n8 E7 Z
customer-no, c: H; [, [4 ~
trust-ok) l% X$ l" c) Y
trade-record-one-len;;trade-record-one的长度
6 r5 W3 U8 I/ q; h. O9 n2 w, {]6 x& o) r+ t+ p! o8 \9 t& Q
) {7 @: e4 X" \
;;setup procedure
* P: F, f/ z; e6 H/ N/ a! ?& d
' o" d7 h! V* C- P) Z( W9 ~to setup
  U7 h  k- K$ l: T, |1 _' @
6 P& F+ O2 E, {3 n; i- {" o' Tca
+ z0 F/ r- X& ~: |$ w: W
+ S* v- s4 R+ I5 \0 u
initialize-settings
6 }: c0 u! p( `  h! N- }4 w# {! S

0 ~( W9 F% ^( \+ |crt people [setup-turtles]
- b- c& Q& }. u% s! z

* b8 y- b) X/ q8 p7 Preset-timer

& s: E# `4 q% O4 J5 B
9 m( W$ z# R: q) k1 opoll-class

/ m) ~% ~% u& F1 x, b% }2 c+ Y1 l9 w1 L6 @0 k
setup-plots

# w. ?- d4 \4 t% F5 X! x+ V# s. {, V
do-plots
* F2 U( q" O* e( _
end
( D' c0 V  C/ K2 Z6 A
  A, R# j' e0 G7 M, Q9 Ito initialize-settings2 V0 G% p+ H2 S0 D# x: S

0 M5 x7 d5 E  ]0 H; c) Uset global-reputation-list []
5 {. T' Q  K4 j# j4 x! i. o
9 Y' @/ D: _3 E% G7 V
set credibility-list n-values people [0.5]
" R  i( U; W% Q* N

# n. m/ i' B' p- Bset honest-service 0

; W3 K0 k7 C0 C3 C* x0 T6 L. u' b& Z9 I) o
set unhonest-service 0

. ^" n1 s, u" R$ P6 U2 @* u' v! r8 t0 o1 u& `3 t  P4 w
set oscillation 0
9 V0 O+ Y" R- z, R  Y
5 z2 J8 G- |6 P% S% j1 O9 p3 c
set rand-dynamic 0
8 R7 W' y; D5 o+ i+ N
end2 I6 D$ {( k. a7 }4 `
4 B6 U5 u) F- O7 Y
to setup-turtles
( z- a  ?% c8 p- B9 t; jset shape "person"
' v$ ]& y4 i/ L. ysetxy random-xcor random-ycor- V8 n. S: ?" ^& L. o7 A
set trade-record-one []
' w, ?3 B, |5 f. `3 A2 }

" O/ P9 N9 }& I. N1 ?7 P  F: u& dset trade-record-all n-values people [(list (? + 1) 0 0)]
# Y: r. u* b0 c4 R0 [

6 B: p8 V+ o* k0 M1 `' qset trade-record-current []
0 L/ `2 l2 q; j5 w* Xset credibility-receive []
" X$ G! Q3 U# s3 F3 mset local-reputation 0.5
9 D! h* k8 U# ]$ W# n5 Oset neighbor-total 01 ^% v$ I2 Y) M
set trade-times-total 0
* K) a$ A/ P5 K, Z' Mset trade-money-total 0( i8 z+ s7 `8 X; n
set customer nobody
  |9 R) ~1 y5 S6 f# Dset credibility-all n-values people [creat-credibility]& d$ ]3 X& L7 ~6 O' Q
set credibility n-values people [-1]
% d7 ?% _( H* u  W& }# _. Kget-color
! j% A1 L' o; R/ g2 C% ^
! D+ n3 [! \( d# [! O/ K/ S: |9 u
end& v* |* n& a0 ]

( [$ t: M6 a# U) S5 g8 f  N) y' Cto-report creat-credibility
8 q8 \. r  a, E' n& r/ s1 V. e& rreport n-values people [0.5]
: y" u8 q. O. p$ {7 q  V, Q  fend
% f! K* Q1 n$ i+ i# ~# z5 Z* I) n- |% \$ ~6 p
to setup-plots* e! a! C' U; p1 C* d1 F1 U  L
0 I/ i+ b+ b7 ~( p6 Y
set xmax 30

  ]: F6 E7 |& p- v, V2 h! U
6 \5 x; n5 X$ O7 a3 i4 f/ e3 Pset ymax 1.0

4 J; h2 e% i! a2 T9 X$ F% }& I. H. L- {! k. _! D
clear-all-plots
2 Q) ^' e9 q$ X" N6 ~8 {

0 x& p) N* [& `! csetup-plot1
6 M% T, {4 j" U* h- b

( n/ u+ I! a# f6 f: C, {setup-plot2

, R! o& t" f: r# y
. C" p4 t- r* K1 h( rsetup-plot3
8 x  @8 v0 z9 H5 U; d
end& N  t- n3 H" H1 `- V0 o

6 B' ?* q) {( Q) Y, ]' K% d;;run time procedures
8 e0 o' d( ]. z- K& }/ A6 q, o8 o& |9 v& c! w3 T
to go
3 V( D) s) z5 r: Q- Z; _# L/ p, R6 X1 Y! P2 n) E: H
ask turtles [do-business]
) i4 o- @% @: J' J) v4 [' |
end
8 P. H5 {2 Q7 V" a! J4 ^1 Z. n! N1 U& w; H
to do-business
9 \8 F" p; H; J' n, k$ C+ \

: a9 V9 L# q7 b; h9 l3 q3 I# @9 q8 e" _! L
rt random 360
3 M! t* u! W* e& `7 d# `
  K- d$ x. M7 ]- U5 K( k; p( r
fd 1

1 f/ a( B% F6 J# ~
  p4 C' N' {) ^1 W: p7 Rifelse(other turtles-here != nobody)[

! X. H7 w; X0 i. Y' ]4 J+ u) H5 |* C3 o" F3 n; V+ f
set customer one-of other turtles-here
5 R' D; N7 f1 P3 y+ J( p, E4 \
8 M, v! ]9 n  X& |5 d  s5 n: u
;; set [customer] of customer myself

; f9 Q! ~& V* p6 B! Y. N' q$ t3 M# E- O4 {+ x- h
set [trade-record-one] of self item (([who] of customer) - 1)
; Q; p5 E6 A3 C$ N1 Y- `  O8 ~[trade-record-all]of self3 C0 V- L6 g( {: Z: k" F* U3 z  P
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
) A8 Y2 ^! x# z( _5 P, Z

$ \. p9 Q  W9 {9 @3 {set [trade-record-one] of customer item (([who] of self) - 1)
1 X( ^& p( q, q3 s8 H" {8 \- ~: j[trade-record-all]of customer
3 ?- r8 u7 k+ i6 d+ N! l

6 S1 B( e* z* y/ t) E% l* fset [trade-record-one-len] of self length [trade-record-one] of self

$ ~4 t) ~: ^- Y( ^$ A; L: e8 w- n& [
- d, w0 H* Y9 c3 o$ l( z% oset trade-record-current( list (timer) (random money-upper-limit))

# v. H; ~" G, U6 r5 @$ h
5 ^# S. H+ k  a6 ^ask self [do-trust]
) C1 Q; s0 c9 V, R;;
先求ij的信任度
! v: N! h7 i* _9 q2 S# R" O" Q+ `' o: c3 ^$ z
if ([trust-ok] of self)
7 a5 N) k8 [/ ?  ]# z. m8 a;;
根据ij的信任度来决定是否与j进行交易[2 a0 l" H8 a  Y- r2 Q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% z9 Q" v) H( b) t, R
$ H) N- t, r; r/ j- v
[

  I' {8 S* F1 l. l9 M6 C
1 L+ X* R7 B6 c3 e9 [% r# B% U9 kdo-trade
9 e# E: A9 b" s5 t) J
4 X* Q7 l: I! G1 @9 Q
update-credibility-ijl

2 B3 U8 o6 s- U% Q& r- p$ P4 O/ }2 {
update-credibility-list9 ^" i9 \% K# m, @

4 a9 m  i$ M5 N8 [% I$ Q/ k- Y8 {0 y0 q
update-global-reputation-list
  Y1 \" X& _- J3 A

" d6 |& c" K! Epoll-class
! R) [+ f/ ?( ]! y% i7 x

- B, h" U2 e3 H' `" h& ]get-color
$ O( H3 s( g6 c7 |1 \$ x* r5 B0 Z
' X6 @2 u3 E* h
]]; a* N) `# U5 ]$ c: k  M, b
2 q# _2 O% D% U' x( Q+ d6 x6 W
;;
如果所得的信任度满足条件,则进行交易. S1 N! C! b1 @: Y
6 i6 T! J6 R6 s- u
[

! T- N- x4 A- ~* ^, q! N6 N4 d2 x' l8 |7 E# |6 j6 Y, R; B. H
rt random 360

! Y; D* t- }1 @5 w/ |  Z7 e
- i. |/ H( q: Ofd 1

. X1 u: W# H5 o( L7 ?5 [& j$ R5 L+ J9 ]! ?2 n0 \: Q
]

4 R, e) x& o# u3 z8 y) T" l, \( V: {( d
end
% \& L/ @& e6 |) s. P! a8 k

% q2 W" S  }- R1 H0 Hto do-trust
# q- c. p: p* L0 U- j7 y, J0 aset trust-ok False( f; ?% }# {9 R

% W7 H8 P  l" I1 \& R8 }
, O: a/ E& V. N+ _+ N
let max-trade-times 0
) N# C9 N; C' H% g  Pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. O; ?3 Z& W; t7 L$ a' v
let max-trade-money 0% r+ H5 g8 {/ U) a
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* C/ _6 J. x- _4 n) xlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 ~, o) y. o% K

" Q9 p' e5 j) N! C6 [5 w) j' d
" t6 y4 Z" L" \
get-global-proportion
- |7 o+ e* e$ y2 \" `" ?0 I1 Elet trust-value
& e( u" u  Z( I% F  @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)

. M7 p9 T, P, I- W" Qif(trust-value > trade-trust-value)* Z5 A! {2 G: u/ M& C- R
[set trust-ok true]4 a; a7 X% |7 L% K, z( }" h
end5 a! c0 X* u( J1 F

& C! a! \5 I6 H  H7 Pto get-global-proportion' ~! m3 S% y; w0 A1 ^& r
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)# W! `# W9 q) q
[set global-proportion 0]% X' h" r1 W% t. j8 Y& E
[let i 0( H* P" \2 ^3 S- N* Q
let sum-money 0# ^) l, {% I2 i
while[ i < people], Z; V; Q. `  {( a9 v( Z9 b
[0 l3 e' F' ^% M; }/ d
if( length (item i6 u; x" U7 ]7 C( k* p$ A
[trade-record-all] of customer) > 3 )

3 I% l& [# t: w" C$ c[- k+ ?, @% O2 K8 R8 f, C: q" Q7 c
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))* S; }7 \9 V, K: T0 [  ^
]
- o9 N! h' U, ?+ d]
5 x" ?% }5 q, W/ J0 \let j 0( J" G6 }4 e, v- u. r+ U: Q( z8 u
let note 0+ y# B. R; T# a7 I
while[ j < people]8 o& x& P3 ~' j6 \
[
& p! t9 i9 v" u. @# g7 K! Fif( length (item i1 P% e8 d4 ?  p' T
[trade-record-all] of customer) > 3 )
! o" S% Z% O5 ?, O4 D: |8 H
[
# \4 x8 `' F3 M3 e: Q/ _7 Xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)4 t! \! E8 {  R! Z1 X
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 _/ u3 c3 x$ b: d. L5 F1 n) b( m
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" v) i  j! |4 K: J) V% i# }]; {: v  F6 }0 Y/ G& |, f
]
& g6 o' \9 |7 P9 i5 u" }( Cset global-proportion note
: _5 ?% s, s. ~' C. C0 @1 g+ A]$ \' l$ X, b- M
end
" y8 W: _4 o) a4 Q4 U3 C8 y
5 K4 w1 U, v* H% Vto do-trade) {7 e! x4 K2 j/ d, b$ n
;;
这个过程实际上是给双方作出评价的过程
6 m+ \- F7 U7 w6 wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 w$ z5 g5 o$ n9 r+ n0 `9 eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# K5 B5 D5 R: r9 J& D
set trade-record-current lput(timer) trade-record-current
5 w; K$ m0 N8 |5 I% _' Z5 K;;
评价时间
% O- l: Q' I& G8 Gask myself [
& G2 Z4 s7 j& y! `/ H# {update-local-reputation
) A( q/ j3 u# U) Hset trade-record-current lput([local-reputation] of myself) trade-record-current
7 l1 w1 k1 I2 r- U2 O]
% T( J0 d$ K$ w! bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" j' A2 k. T, p' N/ s& D$ M;;
将此次交易的记录加入到trade-record-one
( e. g3 }4 s' V+ S/ H1 J6 ]set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself): C+ P, ]! A7 H
let note (item 2 trade-record-current )
* x; q8 ]. \+ xset trade-record-current
; S, B- g) I+ i4 v# D; f$ L0 V6 {(replace-item 2 trade-record-current (item 3 trade-record-current))

! x* s, Y. c6 M; ~" h" \/ r4 hset trade-record-current  \( R4 u; D/ a! j+ W; l7 ?
(replace-item 3 trade-record-current note)
) ]% t9 K1 I5 s3 T8 V8 `. y4 ^8 d8 C% N8 k/ }) Z& L

, e' l, ?" C9 }9 h( |ask customer [
% E) o% X4 f2 [update-local-reputation( _, n) Y$ g$ y7 V
set trade-record-current7 p' X6 ?% O3 L" u( \, S* y
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
' d: q7 G3 @9 R, g" A% I) @2 U
]
3 w7 b3 R9 I* Q3 g, `( s8 ?. D7 F7 a3 Y& K- C# \

# I" A# u3 ?+ U0 zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
) V. \3 N3 p# W* K2 [5 E

( i1 ~( ?0 w, m* G: d; c# O5 Uset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))1 Y/ q2 ^* F! T- N
;;
将此次交易的记录加入到customertrade-record-all
+ [0 O  B2 l/ cend8 J8 y( i7 i; n' \  o/ P' s
1 y0 D7 f. }! |: p. M: Z
to update-local-reputation
! Y, j3 f# Z7 v5 Gset [trade-record-one-len] of myself length [trade-record-one] of myself
' A. N1 r: o& S, m1 g$ k. C$ J
$ _: X( `" V$ q4 W8 K8 K
2 O/ m- ^! m/ ]8 A( d" f;;if [trade-record-one-len] of myself > 3

, t, ^- I- y+ z$ h9 s) r) J  t4 x2 supdate-neighbor-total
# B3 y! V; D, m6 u; w;;
更新邻居节点的数目,在此进行, G5 i- M: a& U5 L" |
let i 3
  I. N6 V+ n, o1 M4 Z" D7 ~let sum-time 00 D2 i  F* n& D8 ?# D. I0 r! k: ~9 W
while[i < [trade-record-one-len] of myself]
- T( ~8 e' w7 r" L[, l& r$ n* g! s; \
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  s9 r1 \% \1 F1 Z; tset i4 s) d' Q* k& n8 o  ]) |9 c8 h) o
( i + 1)
! _0 U4 _6 W/ }
]
. B- k1 s; `: R, \1 Glet j 3% _( Z  f8 _# K3 u7 Y
let sum-money 0
2 G/ C& n0 \4 {% q3 ~. R) l6 H/ Cwhile[j < [trade-record-one-len] of myself]8 K" F7 P& b0 T( S
[
# c& @' E6 X# h" v: Z4 K+ Lset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
2 C) |9 p& w7 ?0 N# }set j2 R3 m+ ]6 r7 `, b, i5 G8 M% _1 ~
( j + 1)

  B) a! H$ w# Z0 v: F4 S]  |" h* M. H8 e( E; `3 p$ o
let k 3! t, h; Q% h+ x# |+ h' m
let power 0
( p# U) d" S; T; o- e7 x- Dlet local 0
) ^" C* {; r; x( F, ~8 Twhile [k <[trade-record-one-len] of myself]
& O+ e; ~! v( {% H* }' n4 d2 }$ g0 D[  ~8 @  m2 L9 X' h- ~( C
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) : _# Y0 g0 v; a6 F/ W& Y# h
set k (k + 1)) {3 n( {2 W4 E$ C; ]' ?8 v) @: v
]2 B0 B& l' u% d# i# J
set [local-reputation] of myself (local)
# J7 W. b7 J4 V3 eend
' R5 C, }; d) c* }" v- C2 K
% M: p  Z) E: Lto update-neighbor-total: O# H% n+ N/ D9 T

! o) J# K  s5 E# ~7 m5 Hif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 Y# I. S! S/ Q6 V$ E
/ w. E' g/ v9 _3 R, _5 z, G
9 A5 T3 L8 `: M5 ?% j3 i
end
3 ?' u/ w0 }/ f7 d: o, ^7 n  x3 M
to update-credibility-ijl * A( ~- c0 o: s. }' ^
' P* `% z: ~1 f1 N8 k4 `
;;
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。
5 N0 X- S8 h# w5 L3 [' Nlet l 0% V3 U) G+ \8 d+ ^: e) K0 V
while[ l < people ]$ }: ~4 f% e6 x
;;
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
, G4 F! w" J6 o5 U, k[
) o- Y- a9 B. a; N: l! H8 vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)7 Q' \; \/ R2 {, E8 R' c
if (trade-record-one-j-l-len > 3); ?/ t4 T9 e" Q
[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
# a& z) P" J+ k/ Ilet i 3( J4 q, x5 C2 b5 d
let sum-time 0
2 a( ?& d5 L- p  i4 L: |while[i < trade-record-one-len]
% q) y) [, d% |' N[6 `3 Q* p! Q' T/ i$ E
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ N' i5 u. u4 U" [& ~set i( P( o3 @" ?/ v0 d7 K
( i + 1)
7 @/ S( Z6 y3 Z& Q" }, ?8 u- o" a5 k
]2 Z1 V2 I% ~' Y6 P+ g5 M& S
let credibility-i-j-l 0" B) f) b. L  p' I+ H
;;i
评价(jjl的评价): p. c1 w) H5 a3 Q3 ^% N
let j 3. r0 i) }# [& D9 i
let k 4# ^1 ]: f  k2 a1 o, u
while[j < trade-record-one-len]# `5 d' z: c4 y+ h8 Z
[
) @( w4 d- J5 j- u" Pwhile [((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) K7 P8 M/ i1 }3 ~* d/ ]1 `
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)" E  x/ ?2 k( m" D
set j
9 C& G. ?7 N& |: b) F. ?( j + 1)

1 M$ ~2 D8 b0 h- g]1 i3 _6 k! a% r3 z/ o2 |2 B- P
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 ))
5 e( W$ ?3 H  N/ F& ^; p$ z9 s/ h3 s- f7 k2 W9 r7 T% J
0 f9 c  V$ W2 \% F3 J  P
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 E  R! v* C% Z  b. Q
;;
及时更新il的评价质量的评价
8 m3 d1 @" J- V6 Wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 q2 z3 \0 o; \  o# ~set l (l + 1)1 a* ~1 u! V: F* m: K/ ^/ ?
]
6 n8 ^0 y$ T6 w3 i  Y; pend1 d: @2 H* T  i

' ]4 ~2 c; v4 b/ Uto update-credibility-list
$ `/ q5 A8 I  k( Z/ q# glet i 0. N; |3 U3 d, Y' \& w( q: t
while[i < people]$ Y3 y3 X9 Z5 k
[
+ y' L$ r/ M. {8 elet j 0
& U* s4 v  V2 k$ flet note 0& T& d2 \# ~( c( o, j! n2 y
let k 0
4 ~9 `1 W* \1 g. ~$ J" E;;
计作出过评价的邻居节点的数目0 N; @; g  w0 }- z5 Z
while[j < people]% c3 t5 p" ?9 c+ r
[  [& Y2 H5 g9 j( c) X' ~; V
if (item j( [credibility] of turtle (i + 1)) != -1)
" F: `* N. @% n$ S2 b' `;;
判断是否给本turtle的评价质量做出过评价的节点% O" l2 ~' F# T/ s: Q
[set note (note + item j ([credibility]of turtle (i + 1)))
2 H* E1 B2 K7 m' h& G% J. m7 k5 S;;*(exp (-(people - 2)))/(people - 2))]

$ }, ~; z6 d, Z0 W- ]+ Z1 Fset k (k + 1)
- a# o. A5 _- [& t. v]. J1 z: R- Q& j% [- Z
set j (j + 1)* M6 k1 W8 q! ^4 V
]5 {$ q& |- j0 O7 M5 g* T& T" h! h
set note (note *(exp (- (1 / k)))/ k)1 @/ h( ~1 e! x: ], x( c0 ^
set credibility-list (replace-item i credibility-list note)
0 ?" z  Z* k- Y3 ]8 s$ f- B1 N) qset i (i + 1). z( F2 n" e* Q% G
]: C, w+ H5 O. ^+ p
end* L3 O$ @9 n' H; b7 b+ p- M: Y
! b  k9 l3 ~& p: N3 U
to update-global-reputation-list+ A1 Z7 |7 @# ?% K3 d: j/ g
let j 0
" i' X& v* b' U  kwhile[j < people]: l. w2 s) B0 @4 m  [) F
[
( M2 {( n. d% B7 E! n: hlet new 0
. [! p8 G* p2 x;;
暂存新的一个全局声誉$ O9 e8 z( M& ?- z8 g% E- U+ P
let i 0
. ]6 d, u/ r2 o" ilet sum-money 04 [% ^1 O- c3 U9 ~( u1 H
let credibility-money 0
3 a/ n) c% n  J; I4 J. w/ ~! Zwhile [i < people]
6 O: z0 ^' C! H' |/ |[0 _" P( x% X& w9 @& T& ~
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 L% P3 C- h' l- mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# t8 C% N* v! _7 {: W
set i (i + 1)  U6 w% V3 S, a7 j  X; A7 [% K7 ?
]
. {" O4 Q. T; Q9 G: ~5 clet k 0; h+ \5 I( Y5 L# S8 B# M
let new1 0& ?' u, G0 ~# C5 P: f% m3 ^
while [k < people]. N8 Q2 Q) x# K% E* H4 m( q, {5 I
[
6 s4 v3 E, ?9 Q' l9 d6 [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)$ a# S. p! s7 x& Q
set k (k + 1)
, f' a; y. F" h+ B3 d9 S% D]
+ Y6 w3 p/ M$ jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
( R! ]) V' g# q. w% Z4 w- _$ oset global-reputation-list (replace-item j global-reputation-list new)
8 N/ I: x% S' k) k  t. bset j (j + 1)2 I% ^' o. |* y  J+ s! P0 u3 O
]
* a1 U) O. U$ T6 j+ h6 ]' Q% `end
2 i+ g( j7 X/ h! m2 z; O
) O& j! [7 D) w2 n5 @( Y  M6 }! Y: c- j5 A3 C9 }
7 z. Y' B$ G* g. G' H  e6 F
to get-color& h7 B) K* g( l- w

, m# G% y7 }: X( n6 X" P$ P2 O! x& }set color blue

0 Z9 {! \9 p6 Yend
! u5 m+ Z+ i4 ]
0 @5 ]  R- R2 g/ O( \5 i8 pto poll-class! u7 G+ _5 a2 `) j! M. L% P
end; p) ?7 k* X" W1 u0 s* D
! H& \- ]7 }3 W0 g  y( P- q
to setup-plot1! E/ S: X$ ^- Q" K! g- x$ l) k+ P

7 ]# m! Z  K' ]' j% n- Nset-current-plot "Trends-of-Local-reputation"

3 _7 ]0 H5 i' H- Q- E* [/ j5 L' i- f7 T7 g
set-plot-x-range 0 xmax

# \( H% u! A  G8 C: I% N- N" A$ k/ T6 i, F% I7 ^
set-plot-y-range 0.0 ymax
/ d5 ~' u; u3 C; U0 U: S
end
  ]1 U" j. w2 V8 `/ G! s6 m6 _# t5 p; ?
to setup-plot2
& A7 v" [! A' Y. V% }
  g2 a0 e8 d% n0 u5 i5 Yset-current-plot "Trends-of-global-reputation"

' c8 b* e& u3 Z& q! {8 E2 y+ z& |1 b/ B6 `0 B9 E7 L0 J
set-plot-x-range 0 xmax

. u) w1 r& a- F/ F: `
+ a) [( c: @" Iset-plot-y-range 0.0 ymax

  k/ m3 }: V* C4 X9 Z3 f4 r4 \/ nend$ @6 G. f( o! p, v
. P0 m0 a7 j5 f9 u  r
to setup-plot3
- {0 |& E4 N. X8 l. p4 m/ m
* p; b7 o  Y, t+ f$ Z( b3 n+ ^set-current-plot "Trends-of-credibility"
4 M8 S$ y) q* D9 @$ u' f1 O# n8 w
: Q8 S, a+ F. O* y
set-plot-x-range 0 xmax

; n' W9 I! K; Z: r! q4 F0 X2 g" Q  R' _$ B2 r
set-plot-y-range 0.0 ymax

  B. W: U1 C6 _- M; _" Jend8 r/ ^2 |- K) x) t1 h

* l; m1 P: p8 mto do-plots
) S4 s# s7 O1 e; C' ?set-current-plot "Trends-of-Local-reputation"( F, h" o8 Y0 z7 x8 j
set-current-plot-pen "Honest service"' ?9 K8 A# G8 Y- c
end
2 D# o4 T8 v7 ]0 F- q, }1 P6 V
3 |# w% L9 I+ t5 H/ W/ C' I[ 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.
  ]+ T3 I9 k4 i8 t" Q) p0 @( z! ?# d9 ]; E% e5 w  u* I
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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