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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:
" J# e5 v( l1 l$ g# m; dto do-business
' E8 j4 W8 f, ^ rt random 3600 L2 c- A* Z% X4 f9 j3 F  i
fd 1$ d- g! B7 \: \9 H6 F% F2 |
ifelse(other turtles-here != nobody)[- B' t( v, y' A5 }; i/ 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.. D- f1 Y5 z: y& l  M" `. S
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 g, q5 N+ B' o8 a0 c6 N+ H   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 `8 R% d# g. U5 h   set [trade-record-one-len] of self length [trade-record-one] of self/ h; u, N# G8 R9 T! D$ c
   set trade-record-current( list (timer) (random money-upper-limit))
. P) N- a( j7 ~# Q* O4 a2 g0 l8 Y: w0 [/ ~1 S: s: q
问题的提示如下:
- W6 s8 b1 ^4 d# ]. Z
: \4 K7 b% u; U) g4 _( Z' Uerror while turtle 50 running OF in procedure DO-BUSINESS
/ s" R6 h+ \* U& Z& n; _% `  called by procedure GO
& `% C( j  Q& q/ P. C( o- zOF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ m! y. X5 C3 D- [; y4 M' B6 O
(halted running of go)
1 r9 ~# p& n+ O- H  e3 j
# |0 @6 [: A( t  t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~~- S" y/ q; a) j
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
' m# _  I2 ?; z3 E& k) t6 Hglobals[. I6 Q6 D$ S5 e- ~
xmax: `1 |, q, p  x
ymax' h1 ]) t# S: g4 p
global-reputation-list
4 _- \, y. c1 H. w3 C9 w! E' ^
6 f' C) u5 K( Z& B% };;
每一个turtle的全局声誉都存在此LIST; i: @6 R! p* X+ I
credibility-list
0 r6 R+ K7 ~. V8 s2 Y) |% i;;
每一个turtle的评价可信度
( O/ D& E9 z* }; s* R, Y, v- qhonest-service
. a1 `, z" p& d- h7 f7 }8 r5 Munhonest-service
& ~; N' S$ ?) k' moscillation
9 p5 g" W6 g6 g" X: `! i5 {" ?rand-dynamic
& `1 y: M5 o* v+ |/ B5 Q- ^]8 L$ l, [; W3 A6 Q

8 P6 f7 k: C. s. h# q2 q8 Kturtles-own[
3 E" `, ?4 D* @trade-record-all' z/ \7 |! p2 X/ R0 p2 }$ p+ o+ g
;;a list of lists,
trade-record-one组成0 a. H+ f. _4 t4 I2 i8 {
trade-record-one
$ h; @8 g. J8 i( |1 @;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 h9 |. z# e/ h) |
5 s5 G" X' k5 K1 V& C3 N4 h;;[
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]]
% z6 E/ B& e/ ^( g% f* x$ l# ]( Utrade-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]! J7 H! T- Y% h9 F
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
- B2 x) g4 o$ p5 [, t6 Q+ W* ?! x8 Wneighbor-total1 U5 P; A5 [: ^( W! @1 @9 x
;;
记录该turtle的邻居节点的数目
/ J; R# C' m; |" m3 ztrade-time
; @, @- _6 s; k- g; X% ~;;
当前发生交易的turtle的交易时间
: ^! z: `9 [( }) Zappraise-give
9 X) W5 K4 |) S$ S;;
当前发生交易时给出的评价; Q: V8 g% i- l
appraise-receive+ C3 ^( `( E3 \
;;
当前发生交易时收到的评价
* L1 i: h6 I2 h# x8 s+ X# ^appraise-time
# F; p0 L" I- P7 X( r  ?5 g;;
当前发生交易时的评价时间. B1 ?9 C" |( ^4 [
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
- t) k) X/ ^% x* P9 C, e- s- Z* q, ntrade-times-total
. `  W( B4 D) {: g# ]  T;;
与当前turtle的交易总次数
! V4 a1 `" L$ j! Z; L$ Xtrade-money-total
" K2 I) N, Z6 S2 K. e;;
与当前turtle的交易总金额$ c+ a2 e1 R$ g: `- O' f
local-reputation
& c* n  I2 R6 c) Mglobal-reputation; q2 K+ m& g0 {8 _7 q
credibility
6 d: r$ O& g5 W;;
评价可信度,每次交易后都需要更新
$ Z$ j- f" C, K; J5 z5 T1 D- Jcredibility-all8 N' M- B4 i: K0 f" {/ u3 l
;;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 u! V- I; ~4 w# }, s! {) O/ \$ P" I6 C. \' q4 N3 i
;;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
3 [; ]4 @  j6 G- f1 C( _1 wcredibility-one
! U( E$ N2 z8 c) K9 K( c( A4 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people
+ p: |$ h: v* ]7 Aglobal-proportion3 d" X+ X3 y1 O, |; n
customer
  C  p3 R! O. n% p+ A1 |  k; Acustomer-no
0 a  O7 e% H3 |( o: {  a" itrust-ok
2 j& L# Q  W- _5 F! u2 r9 B2 W3 Ttrade-record-one-len;;trade-record-one的长度" s0 l  k6 |6 z# o/ n. I6 H  g
]
7 @# L  S) L* v% r- {, i
3 I" i) u, A/ p;;setup procedure
* i* ~( A9 H+ u  \1 x: t# F
& ]% G* \% b- h! Ato setup  B$ O$ x8 r2 M8 L; v( R

9 u7 o# [& n; ]& j/ lca

: O; g$ E; M6 l+ |) X
. V1 R2 l# @1 Finitialize-settings
" Q" D8 h# v2 f3 z! ^2 _0 h
: t% ?2 l2 G' {9 Z! r
crt people [setup-turtles]

: E+ y' S8 V8 J) I- Z# E
% b6 k( O* j6 s7 k2 T; ?reset-timer

" s/ T: u6 x  E6 m7 u8 i
: v6 ?2 u' V' j' U1 P2 U2 [  R/ [* d; }poll-class
4 I5 x9 d; U6 H! r, \0 @0 t
, ?* H' a' B4 M& {# [( {( Z. b. @. [
setup-plots
, R" l4 G' c6 ~/ l
9 x( |( ^2 d( `7 c; d
do-plots

. r0 S0 W  H+ \end
. q1 ], e* o. e- q
; W' H+ {! \# z# n: h* mto initialize-settings7 @; Q9 F4 h- }$ y9 c! j! {

3 N- y" y. |2 B$ iset global-reputation-list []
% E2 h; g; O) u! ?# W5 g( Q
3 w% x" Z9 h% {4 t( J; T! o# I; \
set credibility-list n-values people [0.5]
; i; ~0 i* F% C" e! m

% G' ]$ Y9 X7 C7 ?7 W/ F3 l+ Rset honest-service 0
7 Q/ @$ _3 a+ h5 ~

) n2 c4 M) h. {& f8 E' @8 b. X3 Cset unhonest-service 0
4 K' l, G) {  u) C; k

, f# G5 O0 u: m/ R7 ~; pset oscillation 0
' j4 q7 P3 G- `
. z/ J* J% X5 P8 N
set rand-dynamic 0

* m0 U* x, e& O" j& O; d* B" jend4 p7 c: g* w& a0 R* y4 I7 m$ h$ G
7 ^2 ]: O9 J" `. ]: y0 I1 Z
to setup-turtles
5 q) N4 }5 k) v' Pset shape "person"
5 Q" [+ C- q/ Z# v& G7 Osetxy random-xcor random-ycor3 X# a& _8 e- B2 s% n0 Y
set trade-record-one []
$ C, k  Z: G( ?- x/ \2 o5 T( z5 ]
2 N; G! Z$ j; C/ E  D( Q' q
set trade-record-all n-values people [(list (? + 1) 0 0)] 3 R/ J* a8 n& `
# v! c- E2 Q2 L) [( L
set trade-record-current []" j. \: b% a4 d& o0 Y% o5 _
set credibility-receive []# U; j! r2 A9 G$ w' K0 U! f/ e
set local-reputation 0.5% @' c3 a. b" A: g+ V
set neighbor-total 0% m4 j- @. N2 @* ^4 z
set trade-times-total 0
5 C9 W' ~& ?' a9 U9 v) w& w% e8 ^set trade-money-total 0- K- s; p3 l! f$ _4 w+ `
set customer nobody
1 k! q/ R& p; k5 g! L9 G0 oset credibility-all n-values people [creat-credibility]. S( K% D% l& C9 H. {! n6 q
set credibility n-values people [-1]( y, C( T/ Z- R8 [8 E" ?$ y
get-color. G' {0 `1 \+ M& o0 S0 e7 |9 u  b5 D

8 m+ I% Q2 B1 W: r5 C: bend
, H. @' W* A; `8 j$ N7 \) N: B2 j8 S' z7 a6 k
to-report creat-credibility
% C5 Y/ T3 v2 b+ k) dreport n-values people [0.5]
. `2 o4 w) l% P$ q/ jend) s2 O8 i) y1 `+ m
" u) ~( b& {: g
to setup-plots
: T( m6 @2 a. c1 \2 v% Z6 z- L- _; C0 L4 W, a7 w3 C3 @# k
set xmax 30
5 y5 B6 J/ ]" K$ C) q+ J
" ?* }! [0 _( t7 ^! ~# g" A
set ymax 1.0

/ k5 C/ L- Z8 ?7 a1 f: N
5 ~) w% {+ _) @" E/ cclear-all-plots
  `. s9 ~7 f7 z; T6 |: F

1 e8 H' P6 ?: Ysetup-plot1

, r6 j5 d% p9 ?) L/ _4 a, B
4 L# i- l5 R5 ^/ W" s) V9 P! Ssetup-plot2
4 H- g$ @. B; D( |% _9 g

9 r- I9 R# h; psetup-plot3
3 m3 _% N/ O( q# ^, ?
end: _: L: n+ m' R8 B8 j" s

7 ?' L2 M/ q* }9 q) t; C;;run time procedures
* a, L7 R+ c% K9 o& Y) G. e5 W. [# \4 m6 T
to go& G2 m+ q# D4 |

6 h5 j4 s- N  J+ F9 g- E6 Vask turtles [do-business]
% Z0 g8 Q! Z6 |+ G" b% ?* |
end1 l0 |  {3 G; I: A0 B
$ d/ b5 H  J  ]! }$ l" W
to do-business
1 U! w# s! x9 r0 `) |& N" J) U% `
, ^. T- s5 x! r: ?

5 ~6 J* s3 q. E6 wrt random 360

: m+ K- V# n3 `/ C6 z
" t7 _7 x+ I6 }6 l, a! }9 \fd 1
* k# ~% ?7 o/ _( y' W
2 g+ Y8 y0 S, h# J6 `8 k
ifelse(other turtles-here != nobody)[
) {, j( r; z+ f2 M' D& ^4 [4 c
7 n8 G% t4 F( Q; [% [; P
set customer one-of other turtles-here
- u) c9 C( q$ S7 _
* v2 F, M# ^! B( m0 X( ~
;; set [customer] of customer myself
7 U- ]- r& X; V( ?" T, m3 W

2 Y, y( l5 O8 y& ^" i+ \set [trade-record-one] of self item (([who] of customer) - 1)* N' s7 _: _5 d2 B9 N2 j* W
[trade-record-all]of self" T, o% D9 z6 Z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

# x" U- i3 r& l! x
. \4 ?2 d* e) Gset [trade-record-one] of customer item (([who] of self) - 1)0 j' K6 ]" {% l$ ?
[trade-record-all]of customer

* t( B) l4 E' r$ \* p
* h1 Y' I. z! y2 k7 ~# N4 ^set [trade-record-one-len] of self length [trade-record-one] of self

4 a$ N3 y' p8 K0 a2 c# x
/ H  [# W3 \& q, ~# Uset trade-record-current( list (timer) (random money-upper-limit))

$ {( ?7 y( ~$ ]+ U; O) w: i  k+ ]$ d3 {6 L8 e  R
ask self [do-trust]2 j  i# C, ?, _
;;
先求ij的信任度2 |* ?3 ^% z# J8 T; w* J
- T" A. m+ m/ T% O* \% `( b
if ([trust-ok] of self)- P1 R5 R5 U3 P; T& t
;;
根据ij的信任度来决定是否与j进行交易[& E0 P+ W4 `% e/ T3 C# B# |
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# W7 w7 a0 X1 c( x; O+ {" \

! ]  d" y: c9 T, `+ k[
5 H# T% u! x: q; b

% D- ]8 T: f" }( A7 b6 Qdo-trade

; t' P% k6 e7 y2 D- i1 P$ C# W- o8 ]2 o: t  G/ d: R
update-credibility-ijl

0 G& }7 g. E* I) p0 W/ q7 c. r5 ?; M& g
update-credibility-list: n  q5 l8 r: u& z& @

% F5 h- O. Z  x1 e! O5 K& u
) Y, t8 G* H. }update-global-reputation-list

- [1 Y2 }; y) {6 u/ B) O2 `' M2 O/ _  k; Z5 [' v6 \
poll-class
: @/ \* q) s5 o" A& r
2 \& a+ C, d  c; X' ^8 _
get-color
$ g* C  E& Z, C* L( o; }) w

, _- K& S" e/ P  `1 V6 E2 n]]
5 r) K3 |9 D8 {* a9 Q) s
6 x! H; f8 j! T;;
如果所得的信任度满足条件,则进行交易8 f4 W+ d% F9 j& ]0 q+ x. d

9 |8 S4 h) K% p) R6 }6 I4 e1 j/ |[
, J( y, c  X1 T1 _

, |* o, g$ @  I0 B# s/ zrt random 360

: a7 j; E( L4 ]" g8 R  ?: S, B$ X+ A/ m. P7 r  ?# v
fd 1
. h* B, ^! I7 ?, S. X, @  V" J

$ J: M/ @6 K( ^4 m' J]

( o; W3 q& s7 `& y7 ?7 H% w: D; d% M' {/ [- e
end

; K2 C/ _+ \7 N9 _. r
! V) s( R! v! z7 s8 z$ Dto do-trust " s; J% x8 u  j+ |; t7 X) v6 Q: Z- F
set trust-ok False. z3 J& E, ~4 M7 F2 V( V. ^

& S; F- H. y3 T& Z3 L: ^* F. |! A6 I3 S
$ G$ Z8 {+ c4 d+ r0 W  z
let max-trade-times 00 I/ z- e& L# X+ Z3 o/ x! M3 t
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 O+ M, Y5 u) _- ]) H$ Q3 V% m- c* K- b
let max-trade-money 0" v0 e- r8 z* q: V  H; w
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], i# C1 u9 J: n; ]; d$ H3 P" ~
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, {% X' T0 d; B/ j0 F! d3 G( B& z5 q9 ^$ h, L0 N- ]$ v
; m  ^7 K9 U' @4 l
get-global-proportion
- ~, J* K9 {; R0 v9 dlet trust-value
, R* {* l' {) T9 D0 Jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

. t, b% R8 c& T+ h, Mif(trust-value > trade-trust-value)  _  C8 e+ J" B
[set trust-ok true]
! ~5 B$ w# w, y- Y+ S" rend# [: H0 M' U) E( M" E* N
* b/ X5 t4 i# l
to get-global-proportion
8 r. h8 T" o% [2 d9 }6 M& D) Jifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 X! `) U* \3 B" U8 G/ S8 l[set global-proportion 0]
( B* m) u0 r5 G[let i 0
0 h" O5 \( ~8 V3 Wlet sum-money 0' a) F0 X4 h  L1 S$ ]# Q1 M; W, B
while[ i < people]
2 o4 \8 |! ]7 O+ I9 B[
) w3 B6 W" {! C: C& x. Fif( length (item i. r8 ?$ I4 W. L/ x. V# e
[trade-record-all] of customer) > 3 )

* H2 \5 T' O) O  j[8 [  V: `; s9 J% {1 y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
0 s' L) R: R7 G  u1 R! ~2 e4 }]
+ i  H  h( o, `% i  ^]9 |) b, f" H5 J, m) p
let j 0" T. a5 q( W4 k! l3 ]9 Y
let note 0
* Z- h) Y6 C, R, Pwhile[ j < people]
: c* a5 R& O3 I  @7 Y8 y8 y& Z[
# ~5 F  R4 C+ M% t  h9 Zif( length (item i
/ F/ h' o2 V3 r9 N( }: N[trade-record-all] of customer) > 3 )

! _3 C1 o6 x0 \[
1 U$ p( {2 V2 |- W& h' j9 Zifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# s* U/ q* F1 P4 Q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% \6 M$ y; i# v" f: b: b[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( k- K' `4 C* B
]
6 g$ ~7 i& D8 A/ y]
+ f8 c; j8 f7 L4 nset global-proportion note- h: c7 l1 B5 z
]9 v6 x  ?7 ^. `. m: W0 N9 }
end
1 b- F# a/ b1 \, Q$ X$ T
0 u3 z6 |( W3 \to do-trade! O2 Z" c# L2 A2 R" T+ K
;;
这个过程实际上是给双方作出评价的过程
7 c) l% k& P3 x) M: rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" G, I5 Y6 ?2 f% f: S& {6 e
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 j$ N8 n5 z  \6 B  V, y
set trade-record-current lput(timer) trade-record-current3 t9 t3 Q' F7 g' |
;;
评价时间/ q2 I  a; S/ Q: s7 ]
ask myself [
8 k+ O6 P% E0 M" X/ d- @% h6 ]update-local-reputation
/ {  v& S5 G9 p1 R2 W' t8 B, Zset trade-record-current lput([local-reputation] of myself) trade-record-current
/ c5 ?* e' ^& v- G3 v* V" m]" J5 P. v3 S' x" D& H: z; ?  J6 s
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself1 f: i" Y& V7 j' p# i) L
;;
将此次交易的记录加入到trade-record-one, _8 [& S) O8 Z4 [
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" _3 R! d3 a2 U/ L( `) @, i. k
let note (item 2 trade-record-current )! c1 w& W9 c8 P! N
set trade-record-current$ M2 j- ^5 m' r5 |' d3 K! _
(replace-item 2 trade-record-current (item 3 trade-record-current))
! Y5 w. H# q# D- r
set trade-record-current& A$ }5 S/ y- u' X' o/ F+ k5 [
(replace-item 3 trade-record-current note)
. ?" k# f( C3 U
3 _) R2 [1 S" Q  Z! \. q3 X

% s0 Y5 `8 e1 i. M, U3 C9 Y% lask customer [
& |' q2 y5 z+ X3 O" Lupdate-local-reputation1 a, |8 [1 [: T! ]0 d& r1 w
set trade-record-current( `: K' k$ I) d3 {' y, K
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

7 n, o. k, _: O4 z4 ?]
3 ]/ Q( f, @9 o, G$ `( ?+ J* D% `" i+ h5 w
( p8 G* }0 `) Y% P
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. N8 ~& l: t, z; S$ F

  J% ?- }( ]" k) pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 T- r. u! _$ ^5 U- L
;;
将此次交易的记录加入到customertrade-record-all
( s: I5 Y  j* o+ t& N# iend
& b. B+ Z8 c. U
  [. |8 S& B" j. g4 o5 [to update-local-reputation# R% ~; D$ d0 ~
set [trade-record-one-len] of myself length [trade-record-one] of myself
8 S. K& \* R# {4 \. @
0 b& Y: u9 s7 c' P2 Z8 f( t6 N; a- q5 o
;;if [trade-record-one-len] of myself > 3

0 w. M8 x6 W0 _update-neighbor-total, v( }5 E+ t9 O. `, Z
;;
更新邻居节点的数目,在此进行
/ `4 l/ a9 G' B, r$ M/ ulet i 3
# d, u7 F+ v8 K) K0 N% plet sum-time 0
  H; P0 D' Y/ G9 Swhile[i < [trade-record-one-len] of myself]3 B, y+ K" c, b
[
6 ~% q; M% W+ b9 m6 P& bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 p0 i# }7 Z' J7 `; b$ b
set i
0 `# A" F5 J- t+ c) F' u( i + 1)

) X: M" L& c8 x+ ]* b% S]
! F  T" k1 a: ~) l( Glet j 3) q4 i* q* U7 O1 v) [
let sum-money 0
3 I' Y: q; O$ k  @, k/ ]while[j < [trade-record-one-len] of myself]
; K7 x7 `( _8 p( X1 O[' \, b4 S8 P4 i; s* F0 }
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)
$ ^: X" h! G/ g! d. [set j
0 `! R" }: H# Y( b! E' U1 w( j + 1)

/ h5 N$ Z4 B* r6 C; Y) F]
$ }) q' k$ v- P: x+ [8 [% \* clet k 31 K8 K- y: k9 [3 n  |4 {
let power 06 m4 h  R( \+ O  I& V
let local 05 y) t3 W! y9 G1 B( q
while [k <[trade-record-one-len] of myself]7 o& G1 q* t' r. d
[2 }& s8 _+ e8 A( T! g& b; o  R
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) ' w: B% r4 i" c4 B3 N5 U
set k (k + 1)* a/ T# ]6 x. x1 Y8 f$ J& l
]
7 N3 ?, r# O/ ^, d5 Qset [local-reputation] of myself (local)7 y1 s# G7 b) c
end3 d% Q  r# `" V$ s
' w* H6 z( _' ?% ?9 b, _
to update-neighbor-total: S! U* l! U- Z
* i* S7 o: U9 l% _; ?/ Z6 D
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) }% y9 W! A6 Y  t4 O; _

3 Y% V/ T1 R9 o: E

+ e2 S1 l! k2 w$ P3 F8 h! J5 fend: k; I- n; t9 Y2 n
7 T- R. k/ j( P8 [8 z6 a' n
to update-credibility-ijl 9 [8 A* W  A" j' W3 r7 [( s( k# H

  a9 Q7 T( o& f" a;;
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。
' k5 {/ ?. a% o( dlet l 0$ ?5 Y! t5 d, X! Q' Y& f- b
while[ l < people ]
% @4 W( s( j8 P# o# ]8 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
4 L, `+ K2 E! q0 n( H[$ U4 i" k- q) t
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* }. ^8 f; P! f9 _, c  h4 Hif (trade-record-one-j-l-len > 3)' q2 f9 k$ M8 l
[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-one8 V6 \8 i6 {2 i9 I: j, @
let i 3# v/ V8 I3 ?- Z" j/ F! O
let sum-time 0
5 |$ \* r$ h& E( Qwhile[i < trade-record-one-len]
" @! h* H' w5 d7 N# {[: N  n. F; u! A' x  ~0 y  Z( X
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' A. w5 g( z8 G7 ]
set i
& ~- Z; z6 s: Y9 ~/ N( i + 1)

# A- F3 W' |! }4 b, a0 m8 G0 l]
3 [) o/ B' v1 \" Zlet credibility-i-j-l 0
9 O/ G3 L9 v/ F- j+ u;;i
评价(jjl的评价)
) Z& L9 J& W8 M' ?# `let j 3
5 H/ n+ y/ z1 M- i2 `let k 4
% j; x0 P0 Z' G4 a2 xwhile[j < trade-record-one-len]
* @8 @9 z' U, p* }[
% i+ m/ e# t. C* q2 cwhile [((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
6 q' w  j) Y7 m/ N' @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)
  g# c2 K. N# P7 w# d0 L$ iset j. |; P( V. c; D7 H3 y- S
( j + 1)
( V8 M# d$ ^# M6 P7 p# b. o) s
]
9 B, F  k7 B2 o4 C! `7 Wset [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 ))
7 \  ~. M$ V6 j+ }6 G! w- u5 p$ [% ]7 a" v) o
5 h+ ~' _- o5 H6 q7 W( h
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))* ]9 q8 O6 ?" a1 r- o( ^
;;
及时更新il的评价质量的评价" n+ J& e0 V9 P6 s3 y, k' a7 P
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ \& c" L( u& j4 E" e% l8 wset l (l + 1). C$ `/ c. ]* n" X; L" g
]& Y( d' k# Q, L6 C) \
end
0 ^6 D" d: I3 }7 t' Y, G( @& D, H/ L7 M. \  f( K, [, J3 p
to update-credibility-list
/ T# Y  z+ n: g9 S5 Wlet i 0' j" G: E. u) i$ |% Y* @
while[i < people]
/ W& }1 i% M4 h+ e) L3 ]1 G) y[% S5 h$ d4 _8 j. A% V- h; X
let j 08 F. H6 w) T5 s8 M: V8 J' x3 e
let note 0# s, W# z1 V( b+ F; w' E1 W5 L2 [& T
let k 0) E4 r* J' N0 c8 S9 f/ T' m# u
;;
计作出过评价的邻居节点的数目
0 J2 k& g$ E% E& \5 X5 Swhile[j < people]2 A/ E6 ?* y# i
[7 r5 a8 T) a/ q
if (item j( [credibility] of turtle (i + 1)) != -1), I' s; e. C7 E/ l# o) h8 t. @& h
;;
判断是否给本turtle的评价质量做出过评价的节点7 w5 D( ?1 K( G' M) ^
[set note (note + item j ([credibility]of turtle (i + 1)))
: x. N3 g* e) V. A; @: H4 D;;*(exp (-(people - 2)))/(people - 2))]
' F9 Y( J: h! T' n4 J, h
set k (k + 1)8 v5 ?8 N8 I2 E$ X( I; K
]
- H+ c+ `0 Y" ^$ t& v' |set j (j + 1)
0 G* I" D* Z  S- s+ i]
! U# O4 `. l, zset note (note *(exp (- (1 / k)))/ k)/ j# L, V, r/ {' h' q. x$ J
set credibility-list (replace-item i credibility-list note)
; D' F5 J* Y1 q' V) V1 ]0 dset i (i + 1)
5 k( ]7 Q& V( i: c) X' O1 _6 ~& _]
: t; o* X* |6 e0 ^( e  qend
9 I& h& b* d  W4 e% F, m0 c6 q5 ]) ^& ]( ~" M
to update-global-reputation-list
$ g7 v; O4 I3 x3 n& O8 Y) Rlet j 0
3 h! P' w% L' ^while[j < people]
( @& e( A5 v% ]% R0 y( l5 E" [[; E: z. c0 M  m' y
let new 0& @! _3 d. D- t& \, J
;;
暂存新的一个全局声誉
/ F3 ~# C5 p, i! C) }& klet i 0
1 T* l+ R0 h& M5 y4 Dlet sum-money 0
2 M% t. ^- n9 O! U% c' w$ {let credibility-money 0& _# C) E( D& Y# g
while [i < people]* v( p+ ?8 R% Q9 x
[  k5 x+ U( h  _( j; T
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 p# t3 o! I+ L6 J0 rset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- L' i% L- U* c$ N9 {set i (i + 1)
- ~: u: }; ]8 z5 g" i; q]. a& F' K( C2 v5 P( ?, {7 S
let k 0! w& _1 S  ^8 E+ y1 ]
let new1 0
" u; X! C$ A. n7 E( b" F: Iwhile [k < people]) D- G- V7 a- L  \) d6 ~
[6 Y; c3 I5 y5 ^
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)
7 Q: V5 s; J, [set k (k + 1)
* o0 o) B, d- M1 E7 E1 G6 E' `]
! b9 X2 y( n, yset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + n* r7 {) I, N9 @% t
set global-reputation-list (replace-item j global-reputation-list new)
: g% ?3 P9 l4 y, G* mset j (j + 1)
' l; D: c) e: t5 Q1 D, V]8 T9 o& C+ j$ Z) H. M/ ^( h
end
$ Q- E: W  Q4 R7 G3 s$ j$ `4 V

. J6 p9 P  O/ L) J- j( `! y+ ]$ a/ p* I, |
to get-color- N/ ?( S* o6 P3 I* `$ u% o
: ~. O% a' F# l2 t- G8 y
set color blue
3 D8 F, n) a& `8 h1 ?1 [1 F
end6 y( x1 _' ]; d7 }5 h, p

* s! U6 d; m' b7 Ito poll-class8 V. W0 c2 y, S6 s
end
9 V8 ^( Q7 }* C- ^3 ]1 k- ?1 E! ?* P! e& h4 r3 N, m6 V
to setup-plot1/ a8 v" P' j3 `6 Q4 e0 ^
& B* z' o) r2 r) a9 c9 W
set-current-plot "Trends-of-Local-reputation"

* N' g% h& w  m: M) p: |
( j2 a7 {) c6 F3 v9 b2 Jset-plot-x-range 0 xmax

2 p! U! `( \; S" }- Q% R! B. i7 _/ C# V
set-plot-y-range 0.0 ymax

+ _1 T$ R# @# y% [end
# S* G! M- C! ~# F/ }( z4 y- m5 p
to setup-plot2  T: [7 y, z& j# w, d
- B) a  L" x6 T6 A7 t; A
set-current-plot "Trends-of-global-reputation"

6 X* b8 ~: j. a3 ]- m% f, L# Z8 V1 i; l$ [3 A
set-plot-x-range 0 xmax
5 c* ]  M# n' k

* H( D4 m6 ^% e: H, y+ m6 Rset-plot-y-range 0.0 ymax
. E3 `6 B$ ~) ~3 I% `& v+ G1 _& d
end8 \; U2 h( w5 Q8 I7 @# Z& S$ c
4 S' E& C  t$ f4 c. n5 A
to setup-plot3( x5 R: b: m/ ~7 y4 B

& B" G3 l( D9 u' Y; \3 ^, ^  @4 Mset-current-plot "Trends-of-credibility"

/ Q2 ^( T, P7 y5 j( c
; @/ d* V- _1 P" v6 b7 yset-plot-x-range 0 xmax

1 q9 X4 G# p6 O& A  C9 H1 O; O( |/ h6 m+ S9 ]3 M0 A
set-plot-y-range 0.0 ymax
# O* ^- c& [: ?" j' t6 j  g
end% |- p- n" T8 Z. ^$ j, \1 j7 Z6 W

7 ?9 _( F1 q7 {2 y0 o: v! |" j1 [1 N! qto do-plots/ l4 n2 Q+ X7 O. B! j  f
set-current-plot "Trends-of-Local-reputation"
# T/ s5 N* R5 \; n; v* iset-current-plot-pen "Honest service"- w, t8 t0 J; w# m& q2 w
end
7 k! V/ L5 V  K9 X5 t
/ }5 Z' ~: C8 o  b; s/ Z[ 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.; x" o2 f/ q) P* s8 u2 ]7 d0 h
0 i4 [1 ~9 q+ A, j9 F
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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