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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:6 ~' g6 x% s1 T; `; W2 j" h
to do-business
' C) v9 o6 i3 C rt random 360% j# `# s6 ?' j4 u) O% [
fd 1- h: ~* O' x, c7 d: p  \
ifelse(other turtles-here != nobody)[
/ y! j3 u, }  ]) q  P9 |( E+ o   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.
& w7 T9 B2 ], E+ ^: Y$ W   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + C1 K$ P+ _+ M5 R! X  P
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" j  o& F) y# i; ^' q   set [trade-record-one-len] of self length [trade-record-one] of self1 F; `. z7 L: S4 s. G3 I
   set trade-record-current( list (timer) (random money-upper-limit)); M1 Y" \2 U& H) H2 e1 ~6 |: l

2 b: r0 ~0 N% y% N4 K7 a1 Y问题的提示如下:
: v3 c4 I" B( H) {4 G4 c# i! n9 e8 i( X' i
error while turtle 50 running OF in procedure DO-BUSINESS
6 t: Q+ o3 n, q; M4 q  w  called by procedure GO2 s2 \+ Q- I! B& T, F# Z
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 p* [: r* S( d; A% r
(halted running of go)- _4 z2 I$ Y8 T

# Y3 }  Y, Y5 k8 C8 G- m2 K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~~# T9 A& a( z* f1 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
, }$ L$ j, R0 M9 eglobals[3 @4 z$ q0 Q! c
xmax
; F4 p2 d* r# m& E* ^8 j; ?; |1 ^ymax+ t6 c, E5 X) q3 c# u" k+ u7 `
global-reputation-list  j/ o) ~$ J$ |6 H& V, R# @, D. [
. v' y$ g3 u- @  X
;;
每一个turtle的全局声誉都存在此LIST
& C" `2 _* |. I8 C( X, Pcredibility-list
: X' D8 |3 m9 L) J7 a& a6 s;;
每一个turtle的评价可信度
$ i( X8 G  w: M4 x, Z) thonest-service! V" F1 K! {) X) W+ v6 V: A# R
unhonest-service* k( ~6 O( `3 g/ Y6 Y
oscillation8 O4 b' a+ h2 g
rand-dynamic
( L& I3 Z3 \, P' j4 p+ L7 L]
' o& v: c0 ]6 g0 T: C$ D* [. P( p# O$ \1 C  z
turtles-own[
+ G4 l0 H  L1 w4 m5 S$ Htrade-record-all
6 v" C1 ^3 G: H: N;;a list of lists,
trade-record-one组成
6 K& X) w4 F+ `( W0 ]0 @9 gtrade-record-one, q, i6 I3 q8 ^8 o) ]' p
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 {4 R* |5 h. `1 h# t+ v/ _2 W$ o5 o' r

+ [8 l  ^6 I" j! m;;[
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]]
" V) ~$ q  ?+ y6 i$ otrade-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]
/ Y) c$ ~5 z" V3 Pcredibility-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list9 _" D; O6 J5 R2 C
neighbor-total
  n4 |7 H* Z& y  Y$ P2 P, n;;
记录该turtle的邻居节点的数目: E( C3 I7 D- G6 m
trade-time
( @9 Z! g4 r. ?8 G;;
当前发生交易的turtle的交易时间) I9 y. b! [1 X( E/ c$ T
appraise-give! `" ^7 K4 f; V1 ^8 {0 {' }( ?
;;
当前发生交易时给出的评价
/ c2 a- [9 }7 r$ M! @0 Nappraise-receive
0 V- v0 O- j/ r6 D& A! _;;
当前发生交易时收到的评价4 ~& q0 m9 A* l4 J( g$ Y
appraise-time, G) j& p% Y0 I  y9 x8 f
;;
当前发生交易时的评价时间
) u& @3 Y, \& W, w5 dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
: u' r+ V. Z  I! O% Ktrade-times-total
% |' Y8 Z/ L$ Q5 P# };;
与当前turtle的交易总次数
; a" K' T: p, t1 Z: ftrade-money-total& V; \, A; A! N& ]  g
;;
与当前turtle的交易总金额- K5 F2 X1 {$ M1 S, {- \) R2 J/ Y
local-reputation
8 r4 K7 C7 T" n- L: [0 Zglobal-reputation
4 R$ j* ]; K& l7 V0 E" x9 icredibility* ]6 O1 f! R5 q; m
;;
评价可信度,每次交易后都需要更新6 W8 F8 O  \) j
credibility-all
: k3 G3 E9 s7 W. a8 p( p/ Q; c;;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
( L0 Z  c0 B( a1 a
% F9 b+ W; z: ?6 A8 V& V+ ~* n;;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0.50 i$ f2 ^( X1 `) T
credibility-one
4 B& l! b5 r1 G7 F8 z3 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
& f1 D$ q  W4 _- U3 }# M! M( Pglobal-proportion$ o2 ]9 c% P3 {7 x+ i" k6 P
customer  J+ k% y5 g8 ?  a- o
customer-no% v" A5 b5 x/ [2 q0 m" F) e, n
trust-ok- `! g/ `0 K; b
trade-record-one-len;;trade-record-one的长度; ^4 p/ w! r) Y/ z' v
]
! O2 d; d& F/ j- `% C9 V5 D4 s1 T3 ?: b
;;setup procedure* Q# x7 _) w1 F$ T" Q, X

* e( {5 |4 }! I, @# q) Ato setup$ d) W' `8 |! G( \! ^5 f3 `
& x0 L4 `* C6 u6 ?( a. f6 f7 y2 Z5 n
ca

9 _$ v+ ^# ~* I' x
- x" G1 i! U" O. D5 O2 \) Linitialize-settings
5 d; I& H& A& o# C
. X9 L, a- F" |1 Y
crt people [setup-turtles]
3 K5 u: ?2 E1 |3 H7 `' M
) u5 N" m7 W2 J# {- D
reset-timer
& c4 Y" N, G( X: J; m' C
1 u6 @( F2 M$ B& M, @9 \+ z
poll-class

. k2 }1 i2 y  o# ?4 f. c& o/ \( M3 s9 {) q: [/ D  j
setup-plots
9 R0 u' @. ?* [% {9 r9 L8 Y

- U7 G/ \  k# Q' ^do-plots

8 U5 f, Q7 o3 Zend
' L3 s6 y& s6 m0 E( ^. ?2 m' G% O7 m
to initialize-settings
) I# I' F+ }$ N
; N7 n- s. E; ]set global-reputation-list []

* }0 h& p( x  K
7 r! K4 D) s: S$ E. ^; N1 D  u2 P# eset credibility-list n-values people [0.5]

4 I6 x, {6 l: s# z$ `7 U  \4 U2 p4 N' @( z( D  ], O2 }; l
set honest-service 0
* ]9 n$ }: `" c1 k8 h
- }8 Z% R: s- S9 b6 }  |2 o
set unhonest-service 0
$ }4 G% W5 U* P" o

0 y( E5 e# P8 @# r4 S# {0 w8 Vset oscillation 0

7 q6 u! Z, b, y0 R1 h0 a: E+ e$ x" J. a' h
set rand-dynamic 0

" ?0 j7 }: I% w9 D, Vend
* Q3 b" ~, \/ I2 V- U( }' P7 K$ E. {3 M9 ]7 K
to setup-turtles 0 j9 }- d# a) U- S: Y7 J+ N
set shape "person"
9 R, B/ y) }% L, k+ q) ^" U  vsetxy random-xcor random-ycor
8 h  V0 r8 A/ sset trade-record-one []
8 |2 J8 M5 |7 p3 k7 I/ x( j) x; \2 ?

) ~% Y" O) |) x, ?5 W- Tset trade-record-all n-values people [(list (? + 1) 0 0)]
1 g) g8 @* D* b6 n2 R4 y
" a/ p4 R8 L4 g1 m: D, c: S! ^
set trade-record-current []
. U3 e" b4 }) u7 r9 Uset credibility-receive []* p- {/ F) b" |5 v
set local-reputation 0.5
) p" g- Y) B; R3 G1 J0 \set neighbor-total 0
8 v& D5 ]" @3 R0 `. Uset trade-times-total 0
/ f' \! _4 _; iset trade-money-total 0
( w; |; r" M6 c0 h2 ^6 f. P$ yset customer nobody
8 n- U/ _+ F, F1 g) d0 G8 fset credibility-all n-values people [creat-credibility], W* W3 |; K5 C8 `
set credibility n-values people [-1]
6 {0 B# S# r# i( [, Oget-color
+ N* i% ~, o8 q7 w, o1 L! I
8 k5 N  d! w9 h' s  C3 I
end
" |! g8 `3 L' w; Q% O! C1 a# J4 C& c, S- Y+ _% @3 G4 v* o9 k9 G
to-report creat-credibility
6 `3 W- e# I0 K! o6 Z/ preport n-values people [0.5]
6 T8 P  P& `7 a' Mend
, _# G7 K3 P5 \2 j1 j4 H/ [$ u$ r0 P
to setup-plots
/ R4 Q; P8 |: O# A7 J/ m& l6 Y% b4 ?' r* y, w& ?& C
set xmax 30

. s! z& w' T* C- U% D
# w' N( t6 @4 _/ \2 [set ymax 1.0

1 c: ?$ [; ~# B, \9 p  X0 ~  r% I
* Q) }# p2 U6 Iclear-all-plots
/ |+ B  O0 o6 [  e' L

% _# z; Z, v% E9 `' P1 ~- o/ isetup-plot1

1 h8 X' T8 [5 D7 m. q2 c
' Z7 z( Y/ b" {- ^- |setup-plot2
& f4 @/ d  t$ r8 Q# O
! c- ^( I$ p: |, U
setup-plot3

* K& k( }3 L5 f, ]1 |) fend# b' n- |, ?/ c+ Y) U1 q* |- V4 K

; }+ N- j1 k  e  u1 J;;run time procedures
3 _, Z" T( j" n3 F- g4 h# a( ^  G' q( n3 p+ }/ l& h
to go
) {) @, E6 m% D! k, }" Y' c( }0 F4 j+ t! [# z4 @& s# B
ask turtles [do-business]
; |" j9 S) A% b8 u' R& N
end) l9 h4 k. S1 }) q2 l3 f

: W! W3 A% B# |- e* t. _3 Kto do-business 7 z7 ]4 {" e# x& h3 f/ ^+ j- j0 T
% G4 ~$ w# z2 t+ U+ p5 S4 N& g( K

3 G4 }1 y- W7 l7 g( Urt random 360
' A! N2 l: L/ o& m3 |# @
$ p( M( y4 D$ B( }0 W9 U5 o
fd 1

0 V: @8 ?) w- S4 C+ n! y2 }; \& K" R
ifelse(other turtles-here != nobody)[
! h. J( w6 |' Q0 m4 p( Z; P

9 P6 A: o2 T* lset customer one-of other turtles-here

/ l; F/ c) _. S$ r: q+ n' d0 e
$ A+ o* q) M2 b3 l9 y;; set [customer] of customer myself

6 p0 J4 e5 ~1 k' y0 H5 t; F3 [  C& x2 s4 _1 f; C" \2 C/ H
set [trade-record-one] of self item (([who] of customer) - 1)$ ]* q( ^- D- f& P; W& b
[trade-record-all]of self
! B+ r$ Z$ P* i# t: V;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
* r& K( @: G7 v1 M

; `. D9 V8 C! V, d7 i8 Eset [trade-record-one] of customer item (([who] of self) - 1)
' R7 s3 @. i4 z% @& r[trade-record-all]of customer

" y  K& }1 @$ E5 I" ?- t, N  E4 v7 e
# Q# m2 ^2 k0 l3 Cset [trade-record-one-len] of self length [trade-record-one] of self

" U4 d7 t. o# U: D) H  J$ L( V. A
set trade-record-current( list (timer) (random money-upper-limit))

. b; |4 n( Z$ p6 F/ n. O
0 a1 z8 [# W7 ^4 d# G0 pask self [do-trust]- y: F, l( _" i
;;
先求ij的信任度% [8 S- p  R- J( ?8 F- {
) P' D8 \7 p. N2 D9 e
if ([trust-ok] of self)
, a! M3 n. J% N" P; i;;
根据ij的信任度来决定是否与j进行交易[: I+ f8 l- |! T5 `8 r
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself* |& q/ Y0 {- n7 p
, M, N/ c5 v" }5 ~  i2 _2 b; ~3 W/ S
[

  r. {8 l  N% H: j/ n( ]5 l. ?
5 a. o& @) b# C) _do-trade
9 \$ o! U2 K' A# y) ^& G, e

( A5 t1 x% w0 e% P4 oupdate-credibility-ijl
/ J0 O( @. [2 s, \3 m
4 G8 [; L  T( M$ g
update-credibility-list
; W6 T1 E- [& o6 W

8 K" P; r+ A% |. I- w  I) T
! V* R. U2 X5 N9 g. J0 Nupdate-global-reputation-list

( k6 y- R! |: p/ z3 Z
: I% |- [7 @; w2 T& b  _9 Kpoll-class

2 r$ w" n. \/ @+ v- _6 {7 A6 ]; F9 X. W1 a: D; y* a
get-color
# x9 x% O$ H# q, P

( w' O. j0 r5 m% u0 d% V. N]]! J1 d9 _* P+ f. ~$ ~2 z5 m" n1 n. @
: L% L5 z( F( |# B6 q" S
;;
如果所得的信任度满足条件,则进行交易
/ z  i- H9 z9 D$ \: D; E- N
6 R. u7 `+ \3 G# j# Y' r0 o7 W4 x$ l[

$ o) a& \3 [! V$ r7 H
3 g+ O; n$ G- p; u8 Z; Nrt random 360
4 u. [* q4 S5 a2 O2 U
  Y% E/ {- l. d5 V1 U& {
fd 1

1 Y0 B. @% y# K" F3 v2 e! _/ ~( I3 J  M% Y
]
* L5 C7 Q' C* T" E

. Z5 D3 [1 F1 ^end
, `. d* ?  o; Z+ t) a* Y
3 S7 J6 j1 H, n7 H. h) V
to do-trust
6 Q5 Y6 A- {5 l& R: fset trust-ok False1 l' }, O1 ?* b6 {, @* j( |
3 k% o$ u( F+ x6 r: T$ q% z& l

- B$ v9 m0 H; X% D' blet max-trade-times 0) [, ~" j% K. I3 H- h
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 C& b  B; w  V
let max-trade-money 0
0 S5 F9 X0 Q: V5 t6 b9 gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' V* i7 r  j8 @3 m: E4 Y
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ o# G* b* l4 v1 e  k5 p2 O! k# r' u: t, `* z7 i, F' O) M' A

, n, ~8 B7 ]8 ~# `; r9 Xget-global-proportion2 q+ Q2 o/ R. f7 W
let trust-value; @- _# U8 \5 f; S* R
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)

$ T$ Q$ c. g# X0 O6 _if(trust-value > trade-trust-value)  Y3 }' C: A% L" @2 i! n
[set trust-ok true]
3 ]2 ^" E+ @9 nend3 U5 o  A4 D/ t' T9 i6 H
. S* @7 S1 B( K& d. a& ?6 O! l. a
to get-global-proportion" Q9 I, M& @. A: z- l/ U4 }- G! b
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 `1 b! x* M) g
[set global-proportion 0]
3 C+ h, s7 C& N9 w7 k! |: T2 R[let i 0
& h, }4 f8 I' |" D4 I, Ilet sum-money 0
& l' k" J/ K/ |) xwhile[ i < people]  m+ q3 h4 ^* C+ D
[5 U; T) \. f8 ]
if( length (item i
: \5 O: _3 {$ R[trade-record-all] of customer) > 3 )
, u* b+ w' ^" M6 {6 m% f
[
( z) B; j9 p' x/ `% T- Iset sum-money (sum-money + item 2(item i [trade-record-all] of myself)). z& [" W' [1 O
]* @+ d/ Z2 D: l3 ]' F* m
]- f2 b, Z' [& k& S& I0 R
let j 0
1 @0 O4 i1 L4 Q$ p0 J8 D4 [. elet note 07 G/ X" T3 Q4 M$ b8 v  s' M
while[ j < people]
5 a0 e/ }9 W8 z" s! R9 H[
' k3 J, M+ {( bif( length (item i7 |. ]8 F# t; i6 H3 u
[trade-record-all] of customer) > 3 )

% p8 H% S$ E; V2 a- I[3 u& w3 G8 S. g3 M$ O$ t
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 N4 r' U/ }0 [' N+ J9 @( n* d[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 C+ [+ l- \  w% @[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]) J: E, @, F: j5 T# n/ N/ j
]+ x2 t4 B6 j+ h$ K
]
4 r3 J+ e1 m. W6 nset global-proportion note  P2 e! E' P1 X7 S5 l
]
8 J2 K. v6 v) F. v& m# H* eend
5 Z. k) e- {, E3 n$ F2 o7 a% J! U& p$ j0 L3 f2 B
to do-trade
( q. ~, M& b  j4 s2 f, ^! h! h;;
这个过程实际上是给双方作出评价的过程
$ C* c( I# _0 y: ~; Rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: O% `% p* M# k! P. q0 B/ H* ]set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' \5 a( f& }; dset trade-record-current lput(timer) trade-record-current! X6 w( ^8 Q5 o# @4 X
;;
评价时间# j! W9 j) w/ e! h2 J  l6 n, p# \8 n
ask myself [& ^2 x; o8 \+ s: b
update-local-reputation' P9 Z+ x# H9 b
set trade-record-current lput([local-reputation] of myself) trade-record-current" P2 G; I2 B* |& \
]# i# Q/ h8 l; A; t* _
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% O2 U' A% Q7 C3 O7 c( ~) M
;;
将此次交易的记录加入到trade-record-one
, C9 m6 x) S4 @7 g4 \set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 Z1 n  Z; m* c5 a9 z* W
let note (item 2 trade-record-current )
- p- c* E/ S' D: q: rset trade-record-current
! S/ b! C& W& m3 c% |$ I(replace-item 2 trade-record-current (item 3 trade-record-current))
: b& B. _- W) O( j4 v
set trade-record-current7 M9 Y# @8 P/ _- n6 b: j2 C
(replace-item 3 trade-record-current note)0 T2 b/ ^6 i2 Q- g

8 X( f* J9 j& Q! M# O
* X7 |) Q. P1 v# M
ask customer [7 [6 ^0 @3 ^0 F
update-local-reputation) |. C( O0 A  J/ q5 N2 W& c# i# |
set trade-record-current
- H- ~+ Y* m5 G(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 O- c6 u5 S6 u, Q* x3 e. N
]
7 e) Q- R2 v% H/ z# ~
( p/ q! u3 g& T# ]1 l! H  B
2 r6 O: e2 S* m! e  \& D% o
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* j8 {+ y( F. o1 X

" r5 {' N/ }% h( Q7 Nset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)), S, s2 B. a" u! A
;;
将此次交易的记录加入到customertrade-record-all; m$ n# X% ?  Z2 l4 ^* p" z8 H
end- d/ u; c4 b% A# K
" T. b: h, Q8 j7 Z
to update-local-reputation( I& [# V0 S# @6 ]8 h( W) L
set [trade-record-one-len] of myself length [trade-record-one] of myself0 @4 H* N  n. T. t5 Y1 H
" Z9 ~, W/ U; t- l2 R5 p) C
  r% ]- U; [# E" `. u0 c; C7 Z# [
;;if [trade-record-one-len] of myself > 3
: k( U  n6 g' v1 v  i
update-neighbor-total
3 ~+ r# s; K( x;;
更新邻居节点的数目,在此进行# O9 x. F" x% d2 ]5 }4 G& c
let i 3
  ?, r/ u3 @1 R$ c, Alet sum-time 0
( j2 i, T! O/ l- ?while[i < [trade-record-one-len] of myself]
1 y% a% `# z" p[
  p3 O" K- H+ R, q5 {- M# Z- y  wset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
/ ?; }4 C0 K9 G0 {  S" Yset i
* [0 c7 b5 |6 G8 A. C" F7 `( f! K( i + 1)
7 k' M0 C/ `& x, F* B+ D- c
]4 E. o& F; o8 i2 ~( f
let j 3% E2 d/ A& j% f: f
let sum-money 0
# l4 s' O& B# g9 {8 n/ `, Mwhile[j < [trade-record-one-len] of myself]: E' ?( W) X( A- N: q  B
[0 E- z: C7 c5 Z; B" v4 b0 V5 z9 D, X
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)
. c* o  W: E7 W" l/ M+ w5 bset j1 J* p# R7 }$ a8 r: e
( j + 1)
9 R+ m9 n+ g$ t" F8 l
]4 v0 w  T4 Z% o% ]
let k 39 W: A6 D* k) T. z3 E' ~+ z
let power 0
! C* ?/ n; E+ r  D3 Elet local 0
9 O3 k) ~6 `, ^/ k; C6 `9 A" ?0 [while [k <[trade-record-one-len] of myself]. x7 a* p( c7 q, k
[5 b7 h9 J0 R- w+ N1 ~2 I1 E- e/ Q
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) * d* Y1 X4 `2 M  |
set k (k + 1)8 W2 N" l! i% r
]
9 x8 h5 L3 Y0 J6 |1 [0 eset [local-reputation] of myself (local)7 |! }  s! g& o, H' A
end- Y' I) y, F# O0 s1 K( H& ]1 l

- d0 Q) h9 V) k3 n4 A; Kto update-neighbor-total
. B8 Q$ L' ?) @9 a. d2 r
5 ~7 r/ ]3 w* p% ~% i+ j$ T  bif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 L! W! ]$ a6 U, e/ p- z, p

4 b9 E5 D: o' Z$ P3 M- G

) P$ Z2 f2 {' t, }  p& h2 Z; Send( i' {! l" M; P  Z) E6 B
3 `8 J/ C  I- }4 k: g
to update-credibility-ijl
- M, u( [. }& H- `
4 n: v, E1 u' e) J4 p- ?6 \* q;;
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。
. }* Z9 V$ f; k7 r& tlet l 0
+ [0 h! u8 A! Fwhile[ l < people ]* ]) N. G" X* ?' y% v
;;
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
" x. ~3 B/ h+ ]- s$ j[1 g5 e5 j( i! ]" B- p( d- P0 c' @2 A
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ c3 t4 \  R7 U, \4 tif (trade-record-one-j-l-len > 3)
& [$ ]* M7 D5 P, P  I[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
& }& {" g0 X- p& f; u7 \let i 3* Y3 }5 u4 Y) ?5 U1 \
let sum-time 0. X6 _7 V5 n3 ?/ M( ]
while[i < trade-record-one-len]
3 n1 b  @" b4 V0 V$ n[
# T! z* P! g- H% G3 N: jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )1 x  G9 p# i5 N3 I# _, _: f
set i. j6 G/ f- }; d& c0 t! u# X! N" L
( i + 1)
2 H1 S  }& F. i. E* n
]" U9 U* X* ^' |
let credibility-i-j-l 07 Z- O! }. I3 `" v" w& r  I4 d, k
;;i
评价(jjl的评价)
7 i1 s8 A  P  h! L  ~+ A& \let j 3
8 Y$ F" w- j; N6 Rlet k 4
0 t8 A5 k) \3 @9 ?while[j < trade-record-one-len]8 K$ B- X/ F, C) N$ a+ r- t! T* _
[
6 W+ E$ g- N9 {+ {  j  Jwhile [((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
2 P0 N- o, U' e% D' Dset 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)4 l' e1 J1 P$ z$ Y0 ^6 U' S# K
set j
" j  u  |6 D9 j. |( j + 1)

+ b* ?6 \; h5 ~) b]8 O7 n. L% Y! X" ~
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 ))
  y4 ?1 Y9 g0 n3 A4 C6 M5 t: V. U8 Q  {, w" M
8 C: W" e3 ^+ u  t) p
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ M5 i' l3 U& v/ R$ J3 a1 G! };;
及时更新il的评价质量的评价
' ?! J6 f9 L: V- L" e" e9 O; Q& \8 U# }set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
. U( V1 f4 W, t! u3 b# B& ^/ Tset l (l + 1)/ }$ W4 X0 v) b; o$ n( Z
]4 N- D3 @1 S0 e6 M+ P2 L8 J' _
end' J/ @0 @% F! p6 f2 y, n- Y5 L

; @5 b0 R; t5 G& j! |$ b# L9 m9 Hto update-credibility-list4 y& e) N* j9 s# s% m
let i 0
% C( K; `+ V3 t1 ewhile[i < people]
6 O/ r+ h2 I" V. _6 v[
5 }8 ^1 O& J8 s2 L: r, O( ]% _let j 0
: `1 y* ~; @9 @) V+ x' Glet note 0" k# n% D3 Z! `
let k 0  S# Z2 V. n7 T2 C+ ?8 q* T
;;
计作出过评价的邻居节点的数目$ `) J: F7 U# M; x
while[j < people]
5 A. ]7 H; |! F0 r/ ?6 k& x/ U[
) P& v! n& V! _2 k1 \. G! S; ?# Kif (item j( [credibility] of turtle (i + 1)) != -1)6 r* k$ p8 S6 S) K1 l0 J
;;
判断是否给本turtle的评价质量做出过评价的节点% P3 U' B/ j. ^: S* N9 t# K
[set note (note + item j ([credibility]of turtle (i + 1)))
0 k( Q3 H) Z; m4 f;;*(exp (-(people - 2)))/(people - 2))]
0 E) R; J% I4 m4 F7 i) p  P# j0 L+ |
set k (k + 1)
4 _5 c3 ]9 s; G  L9 P  `]" j; @& I5 ^( B* N( [
set j (j + 1)1 Z& Z& e$ `' v4 C% G( k
]
4 g% N  Y6 c( v3 [# X4 k5 s9 Lset note (note *(exp (- (1 / k)))/ k), A9 |. L2 r1 z, S1 l6 y; A
set credibility-list (replace-item i credibility-list note)
- q3 B) ?$ @2 D! S0 l) fset i (i + 1)" |1 f, R3 y3 }. Z# V
]
% z7 l( @: u# V0 z1 P1 F0 ]$ u/ Pend
9 Q# g0 T; z6 k
0 f$ h/ a7 p7 ^, Lto update-global-reputation-list
7 f9 d( v, P- z; L& l9 b2 F4 elet j 0
* j. f+ G( h$ A$ X4 N4 x: X+ Wwhile[j < people]
! ?* D0 Y4 Z3 |# i5 t1 z[: P# J' w8 s" n
let new 0* A& B/ @, E" k& C8 K2 m) l. F9 k
;;
暂存新的一个全局声誉
; }  z' _" e- B) `$ W. P5 r/ Hlet i 0
* i% \  t! t# [1 G5 ?1 J- }, flet sum-money 0
( b! B5 I4 f" k- l( A) H  V7 Blet credibility-money 0- Z  Z* ~6 M3 `. J4 }  ?6 ~) K
while [i < people]
# Y/ r  |4 d" F/ O9 W' I[
3 G) R4 m: e1 j- C- }: wset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
; U3 y9 n8 I. X/ O0 z5 l# Dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
( b: t* M# I; G. c& w5 `/ x5 uset i (i + 1)7 i9 X7 V) U2 ]2 u* N1 `) q
]) G3 {/ h% g& |: {
let k 0
0 Q5 e/ R0 x. l; slet new1 0
" b- W! I  s$ @6 mwhile [k < people]
( j# z- T' Y# c, [2 y+ ]. X[0 w! O8 d6 \6 h4 o: x5 t# i- g
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)  K% v6 y8 @) @2 M! ~% U
set k (k + 1)% a) a& x9 g  _9 M& _
]
) ?& f0 v9 \3 F. S2 s) P! kset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( |, t5 G. }# l
set global-reputation-list (replace-item j global-reputation-list new)
+ u7 |9 y7 `" y$ I0 d+ gset j (j + 1)
  O! J* M# \  T1 {5 u; y]
( n% t6 p5 e8 n! Q# M0 @6 Qend
6 }5 B# `* }, I1 o, o9 g
5 W) D; K" P( g9 f. v; l# ~8 _* L5 e( \( B( o/ B
- s; [' u# A4 b5 q+ @6 J9 a
to get-color" |1 H, @1 I/ I
( @; l/ W" G, e8 |2 C' q
set color blue

8 D8 V4 r7 w6 J: Z  Hend
4 F5 A5 F! e! V1 P( w! a& U. w! W/ p. _
to poll-class( J! }2 j+ H9 R6 s1 a; x; W- J
end3 _, Q) m7 a- S4 B" U0 p/ o
! b- P3 D- o& @8 C; r7 \! [
to setup-plot1% S: \5 P: S9 P1 D: B. |

1 }8 N6 U2 L- J. }set-current-plot "Trends-of-Local-reputation"
6 s2 {7 O) P' Q8 I6 P( d9 e

1 k, U2 b7 U/ d! p$ \' iset-plot-x-range 0 xmax
' R4 b0 r0 |* \6 `

6 y; f$ \1 x; A8 k0 s! Dset-plot-y-range 0.0 ymax
+ [9 c! a, z8 i
end% t$ b) E) Z$ E: F0 Z* c, B. g, [
4 z' D8 b1 A+ @" S8 f' t2 N! z; @- u
to setup-plot2
. D$ ^9 L6 k6 v+ h' j
# S2 g5 [8 Y3 J. _; gset-current-plot "Trends-of-global-reputation"
6 s8 h! _& a2 g. Y

. ?. g- {6 _0 c& X! qset-plot-x-range 0 xmax
6 k$ v# W0 c2 s5 q1 w! @

, L0 f$ i% C* V3 pset-plot-y-range 0.0 ymax

/ W+ m; F2 L7 ~* X1 {) a: a( g1 {8 b5 Aend
" g& p' \9 K* D/ M; t, V6 K4 [3 U5 ^) Z) Y, l5 g4 b0 Q7 P0 j
to setup-plot3
  [1 p: r. X& t4 l; s0 O) N& X  \' o0 W! {
set-current-plot "Trends-of-credibility"

8 {; ^# b! E3 t/ S& i4 A
8 ]" c4 P2 w1 J) u3 P) bset-plot-x-range 0 xmax

. v; s8 E6 J$ z. q6 Q5 Q4 j* q+ `& n( D4 h
9 l/ b, k0 x/ sset-plot-y-range 0.0 ymax
* F7 I) X! i* i: Y
end1 U- K' t+ T# w8 u

4 d0 {& j6 s% e( uto do-plots
4 p/ ?! v; m5 ]7 {1 {set-current-plot "Trends-of-Local-reputation"
" X: A. t4 p& g5 O8 ]" j* nset-current-plot-pen "Honest service"
$ {& _# h0 G  i4 M( q4 h" jend7 w$ V" P# X4 U7 i0 u) X

9 ^% D4 G) }2 w. F[ 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.  C; f9 D: z! s5 a3 l0 u

" I! Q, \+ R: d7 ]1 z8 V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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