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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:# X$ Z  A  l1 O6 p
to do-business 3 U' Q+ a5 r/ B3 f* n' U
rt random 360# V, y# ]. Q1 k/ ~8 J' b; O
fd 1" q( A0 j: {% X
ifelse(other turtles-here != nobody)[* a) r2 _$ Y" t6 I# h
   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.
& F6 D: f( M4 N  X" o8 H   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 _! `& ^5 u1 Y6 Z1 u   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
+ n. A+ ]5 j( d& h9 ~   set [trade-record-one-len] of self length [trade-record-one] of self
7 t: \+ V6 a8 P, D% P! q2 Z4 q% N   set trade-record-current( list (timer) (random money-upper-limit))
. u6 {9 c( p. Q+ U/ l% x
" o! w  j# B& o, ?问题的提示如下:
, e2 A- ?+ [0 ?3 \0 R  L
+ r+ o, \4 L! k4 Derror while turtle 50 running OF in procedure DO-BUSINESS! h- ^4 q7 }. \6 N. s8 W
  called by procedure GO
& ^' z# L; {8 Z5 r' K0 e1 }. POF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ z$ }7 R7 Y( k( T) Y
(halted running of go)1 e; o2 g% _0 y& |! u7 f
! P2 _4 r* }& {' t! Y6 I
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~~
# j; g6 d9 P3 l7 E6 p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
7 T5 ^3 x! \& C/ p" gglobals[2 z) G+ o9 W8 r/ @- w( B' o
xmax
  p2 s; k* ~9 v1 f9 X( f* ^; Iymax
4 O% l& M2 s- Y- F) C3 n. K, Eglobal-reputation-list
% [5 s$ a0 D5 B+ V$ Z& w* ?% |6 @; ^8 i; ~* i+ K% ]) U: f
;;
每一个turtle的全局声誉都存在此LIST1 Z; L# m- X# A$ y- o& j; \
credibility-list
+ P" s  g+ W- ?( z4 n7 n! X  P;;
每一个turtle的评价可信度
4 F8 M5 h! K5 mhonest-service$ n* G* Z+ c4 ~- \
unhonest-service
) k9 E& x" W! ?7 ooscillation# f; N/ C. [' [( S0 a" V
rand-dynamic
% k$ Z  q# z. [+ O3 @% g3 T]
, ]6 n4 O* b8 G; o6 c7 G
. H2 V4 X5 h9 f: bturtles-own[
2 u6 v* g" W7 h1 ~5 ktrade-record-all) l' n, C( a9 U! {7 A& R5 I6 j
;;a list of lists,
trade-record-one组成9 y1 k9 X! ]  b2 ~9 F  X
trade-record-one
3 A. y6 r* v4 x; _$ F;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
% g$ |9 O4 B: d: [/ E* {% F- H2 z8 `
;;[
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]]" c" J( d! R* q
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]! V0 u$ P  [" i+ }# y0 Z
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+ F! q% v3 x6 N5 T! a) c; Z% C
neighbor-total
& a$ B& ~  m( L$ I2 ?9 H$ E;;
记录该turtle的邻居节点的数目# H  G5 E& D1 k# W+ u5 q
trade-time1 S9 t0 M6 ^- X2 s6 O$ b
;;
当前发生交易的turtle的交易时间1 G/ D1 H4 H  {' l% i, i
appraise-give
8 V  ]2 {8 E( Y2 W* l9 V* @( `8 O;;
当前发生交易时给出的评价& ~) z+ z3 I' p9 _2 A" @8 U0 S. ~
appraise-receive2 r. z# ~: v! M: F) P, ?: U
;;
当前发生交易时收到的评价
: c! L# \  D1 e3 m; C* ]6 Rappraise-time! A: G: n9 a! @& d
;;
当前发生交易时的评价时间
- e7 s2 c; E2 n! S- d8 q' f' ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
# `0 ^( T: |& L. gtrade-times-total4 Y( Q, r' Y  e: |8 W- J. k2 I6 F
;;
与当前turtle的交易总次数$ c3 i7 j: f/ n- ]2 z
trade-money-total1 j# y* N# J) g
;;
与当前turtle的交易总金额
. x, @3 n1 E, p; [local-reputation2 p& ]" q. ?) B+ ^4 j7 d8 V
global-reputation0 H" R1 C2 u0 q1 D
credibility% U1 P% p" ^8 Z" k! X/ @/ l
;;
评价可信度,每次交易后都需要更新2 D- p& V8 x, C0 }4 R9 l+ V
credibility-all* t0 J3 f) I* V3 o6 `. a8 W
;;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3 ^8 w+ |, P' r8 ^5 Q7 o6 ]

+ X: \# l: ^: R% F; _3 d; W;;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
( p# Y( I5 n/ Y$ k# E6 |, T1 Dcredibility-one- ?. M! D9 w% h5 V/ I2 L
;;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
& z7 B- i" v* P- B0 J! ~global-proportion2 q8 q, j9 ?4 [8 p# |& _& g
customer
6 D% F5 M# q5 O9 f: ccustomer-no5 Z) p) R6 S2 E  @1 a+ G
trust-ok' ~8 f2 ]; _, ~; J/ c% ?2 L
trade-record-one-len;;trade-record-one的长度- X, X* d4 `+ d6 u3 _
]2 z# R3 a' u" g4 w

) d+ ^2 R2 q6 V+ D;;setup procedure& L& K# M# g4 A7 k
4 r+ \5 L1 I* X8 e8 ~8 w
to setup- A- s0 Q7 w1 K) S0 R" e

% M! h) Z, C0 r9 ]9 p- Kca

- ]6 s- {5 L" `4 T+ N7 \4 }+ y# @3 ^* e% U% Q5 `
initialize-settings
) \& V2 s: D$ C3 T- E4 F$ c

* P5 w: f* w% }" F' icrt people [setup-turtles]
6 O( n5 ?2 C$ `0 R$ }  i: K8 [
/ c3 z( E$ L9 |) D
reset-timer

1 x$ X$ f: B8 R  R5 R) F* k
" E" A. A  l! ~8 l9 apoll-class

5 g& v; o7 s. W- m1 b2 T9 D% h! {2 P3 l3 P2 J1 _
setup-plots
2 b) A. k, Y# t0 |* H

  l- O/ w1 f/ j' H% @- D% {do-plots

4 h- _& N' N3 C7 M! [: kend
/ d- `- x% ]3 F' p  w: L0 q
- c# A% Z  v- p. lto initialize-settings
0 O4 C8 G+ u% b. b: T( B& A. T4 O0 V2 p8 Z9 L* X  o* D& q
set global-reputation-list []

9 r' v, Y! v2 c+ U9 I) s2 ~5 P, c8 l3 x$ C* S9 b" w
set credibility-list n-values people [0.5]

4 h! k* d" e4 K: t
# q9 a$ @& R7 L5 E: i  u. ~set honest-service 0

  W2 M0 C% X, |; t# H4 J, W' ~+ q. p, Z% }" B
set unhonest-service 0
% |6 Q# S4 ]$ {" x8 r
9 H$ X$ l4 T8 O! u3 s  b. n
set oscillation 0
3 [7 W+ S. C2 ]0 p3 D) V

% M+ N% X3 m/ m, l* n* eset rand-dynamic 0

6 L. O5 w8 ?8 X  ^5 Iend
3 ~/ w) X' ~! }( v+ _7 V+ }
' J0 K% _  s9 p" O/ lto setup-turtles 6 F* a1 k' M. q0 Z; f; F6 M* J! h
set shape "person"3 B' y" w1 v$ [% _7 F
setxy random-xcor random-ycor
" b2 S9 k6 X; ?6 @  e9 J( @set trade-record-one []
4 ~& c/ p# P3 M) s! o( ^
7 R; p7 }4 C3 _
set trade-record-all n-values people [(list (? + 1) 0 0)] " U% @. B' p9 s

% U3 y. ]; A8 B$ Sset trade-record-current []
% m# m1 ~+ Y. @! G( C# r$ g" E5 zset credibility-receive []; N- X% Z6 ~4 l/ v8 Q
set local-reputation 0.5( R! Q# M, `7 V4 P2 h
set neighbor-total 0
6 J, D7 t2 e1 sset trade-times-total 0! ]% {- }, N  _& y3 A
set trade-money-total 0; b, I5 Y; L* f0 s, l- ^
set customer nobody
" N  z* H' D3 m1 q: n# E! ~set credibility-all n-values people [creat-credibility]
  e1 n7 N6 N) E0 v5 F% Xset credibility n-values people [-1]
; J6 O+ y5 k8 _" z1 _get-color) U9 W$ z: ?9 e* g! G  v& L. @$ }9 x
* ~8 V/ E/ s/ _
end; |" [+ o, h$ }; d! J

& T$ T8 f+ e0 N3 _$ l. p, Wto-report creat-credibility; n9 V9 x, n& \: I& G- U3 C
report n-values people [0.5]' r7 Y! v  G  K- n+ I
end! y5 A% J3 a: j0 g

; |' ]( M1 B. L9 G9 d3 c8 Cto setup-plots
& p9 ^  d0 L4 u) f. }
4 B% S1 U" h& V( @set xmax 30

* @( M2 {- I0 M9 f4 ?' g: }
3 ^3 {. |9 |4 t& c! r& q2 x6 vset ymax 1.0
: k+ |5 u5 |/ t# i" X

, _' d  f3 _2 A0 n/ x: {' @5 Nclear-all-plots
' o) K4 A) p" f
* q( Y7 G3 r5 o5 Z- c
setup-plot1
' U2 \: ^% T6 M/ q' u4 f" G4 R

- n2 _1 C: L# J' }* ^1 nsetup-plot2

' R; O7 c- t) ]
% A& Z5 v2 e. F6 Esetup-plot3
2 _, K& y, n/ w' H& _$ Z0 j
end
& t8 e+ v3 l2 E3 N7 X- Y5 u+ d+ Q4 l! K( B) |
;;run time procedures
1 P5 y$ d4 J- z) h) m: S: x6 N' x& x; v! ~
to go5 @9 t4 L& [8 O$ n  o+ p

' F" K( ~1 i, T' ]  E3 rask turtles [do-business]
! f5 v9 c4 G4 y  r
end: l/ G( u. X6 p% p/ l7 t7 \, W9 p

2 o& }1 d7 R4 Ato do-business
+ r- j! x: }* T* a2 ^

8 n" D) \8 g/ V, N: h1 ~7 S2 r5 ?  b6 W. p
rt random 360
* w1 @/ F$ x* c5 T! F) u
* B5 G. M) p# Y7 N5 n. ~! U+ c) d
fd 1
3 h7 m5 S% z$ O# e
8 @$ Y  x& J& Y& d, V/ W5 @2 C
ifelse(other turtles-here != nobody)[

' m! m5 b3 T% C+ t% C6 O$ ]/ K+ w; b- t4 H
set customer one-of other turtles-here
% }8 E% n: f+ m- T; k

0 T' X8 A4 j" v7 e* \; J( P% ^;; set [customer] of customer myself
% q5 g0 B0 o1 A

7 A) L& k( p. z( p& j& \set [trade-record-one] of self item (([who] of customer) - 1)
/ j7 R( i! o. p% ?9 k; y[trade-record-all]of self
7 Z- c. u% [9 r( y;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" }# q# @" C1 {2 ~$ J

4 e- {7 p+ Q) @5 u1 e, Pset [trade-record-one] of customer item (([who] of self) - 1)
# z  J2 h- V5 w' r. `9 [[trade-record-all]of customer
7 m+ i  D) x% H! R( l, B
. w: W0 h7 D( d) ?! B: F6 A% f
set [trade-record-one-len] of self length [trade-record-one] of self
4 X3 ^7 _! L3 e  E& f' _& v

9 m: F6 v7 M& T: |set trade-record-current( list (timer) (random money-upper-limit))
" K) y) q4 x$ d5 o8 L; C% x* p5 ?

: o; x+ J! `- V  o: q2 ]ask self [do-trust]2 I4 }5 f/ G' h6 m% |0 [/ z1 ~
;;
先求ij的信任度
5 {! O/ m  B) c+ K  Q% g$ Q6 Z! w. v" V* I. ]
if ([trust-ok] of self)
0 ]9 ?; T+ s" }2 u. c;;
根据ij的信任度来决定是否与j进行交易[
0 G8 H0 h$ M$ O. E5 v, C/ bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# z/ [4 y& c9 I* B8 H0 n9 d4 W; K& W" L: s! p# I$ b1 y
[
( s9 Q( U3 N# ~
1 M7 j' \! K4 g4 i  t' c  o
do-trade

2 g6 @) ?. a+ p- t$ q' R; w
2 ^1 Q" O- |/ M8 Y- Jupdate-credibility-ijl

+ q& q; ^) L! F4 N' s, X4 ^+ y& _2 n. Z( i* a7 w
update-credibility-list
3 V, c: O/ a! _- }+ I: o) c6 G

4 k1 P% J! I3 z$ F8 m$ f
( h$ o+ {1 a; B4 j3 Rupdate-global-reputation-list

" ~6 {  y; B/ W, a2 i1 q! B5 \6 \
0 ~7 {& O+ ]( u1 f3 O- H8 @6 ppoll-class
' J6 b" S, }) W( e) q# |0 D; j

6 I  l+ B, E' ^- y' t$ d0 i* w& Yget-color

5 x$ G* E8 I1 Z4 V) C  |& }4 N$ N6 x: V6 o" j! {. h
]]! _" j+ \! E0 Y0 T+ B

0 w4 r6 {6 o( Q# o  u;;
如果所得的信任度满足条件,则进行交易, h$ n* @- i' B" [8 i
, l' b" H4 i8 V; @7 O
[
" c8 h( N& L; _9 F6 O1 H: y  H
! V; s+ {9 J: h5 A9 O4 C
rt random 360

' O& k# `6 C( V7 V! e8 S% o. Z- N4 w( l1 I2 [3 j0 N+ e3 k! N3 h
fd 1
: Q7 B6 S7 f! }' n

, ]9 a6 ~' m: i9 ^8 X6 V: E* J$ `]
2 v6 A. z  J+ F9 b4 Y2 ]- S

) M9 \2 g% L/ k4 }$ a0 I% p9 send
7 M, l* g2 F- m5 Q7 E9 y

- S; m$ H) f/ C+ m4 H, ]! oto do-trust
- a7 i+ @  b4 o7 l8 }! h8 h/ Z# {set trust-ok False5 W, ]. x/ H/ \6 j

; L% G. |* R9 w5 a& B* c. \- V
% i+ l" P* E2 c  @8 P+ p
let max-trade-times 0
: y4 a" \/ X9 U8 S$ J& H; \$ Mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: ~. {! ?6 a( Z! g
let max-trade-money 0
4 Q, v$ t) ~' |foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
. W. y0 }; _$ M) z- X6 Ilet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
( s" e6 Z( ?- S+ ?: u$ n" X& a$ F$ Q
$ L$ ~! S# `3 ^0 g1 _/ C* M+ q
! {& a% C5 o( G* s5 V
get-global-proportion( U" x1 _- H! }: C
let trust-value0 w* y3 e% B8 F' V6 ]9 w! W. s
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)

/ h: n& t' h" l3 |- Hif(trust-value > trade-trust-value): D. Q9 b, e" i* a* M
[set trust-ok true]
& s* R* W- z$ o" s  q3 Fend: Q% m! `* Z0 n  ^
  N$ l9 D% \  H6 Y- ?5 P" n
to get-global-proportion
* H7 O( q6 K! [$ |9 k2 w4 gifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 s) s& {1 j, @
[set global-proportion 0]
" j& x0 F9 O( r  v% P6 @[let i 0- l5 I6 Z) G, P
let sum-money 0
" S* O  E& p( O0 E' Q8 _" {while[ i < people]$ N' m1 F0 W( O, V1 q
[
  @+ l: ^9 i. Q- s8 Wif( length (item i
6 i+ x. \2 L  m9 `[trade-record-all] of customer) > 3 )

3 U2 Y: @* ?% w8 J[
! S$ `5 j6 Q) i9 bset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 {1 m  K5 n' z: v+ C]
, Y; n. D+ Y: y- []
0 I2 J! p! O9 v. m$ x: a( S, Clet j 0' d) ~0 _9 _4 W" v
let note 0) v" ?  R* i6 \
while[ j < people]
( s0 t- {5 P3 D  s0 H" o[4 X- N& K/ G- R1 k% C" }6 [
if( length (item i
9 g! |  ]. A' L" C+ b2 e[trade-record-all] of customer) > 3 )

" @5 m# U/ @' |8 N[$ Q3 g9 J; P) c. S0 g
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 K1 `2 D% h. u4 ?; z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- l" E: Z4 N) ^
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]* W4 v3 s* @( {/ J. z0 Q
]
) D. w2 n' p" n& O0 t& T4 ?! R# u]5 @/ Z1 b1 F8 O0 \0 U0 q
set global-proportion note
' d% T' A# @( @/ G7 O% s$ K]# G; d# a; _$ m! y8 y6 R' e4 `7 `2 c
end
) ?- ?- Q+ J) j+ T
4 m7 X+ A/ M" ~to do-trade
. Y2 A  W3 ^# [;;
这个过程实际上是给双方作出评价的过程
' m7 Q. Y. g, d% i7 N- A( aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* W, j1 l2 R1 T6 G% Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 ^* z, i4 h. h1 t$ C7 [$ b2 Iset trade-record-current lput(timer) trade-record-current) A2 B' u4 D0 F% k0 n. C, e
;;
评价时间+ [0 A0 `' Q/ P# {
ask myself [7 l; t4 g. S& _
update-local-reputation; X3 f. ]( D, r/ o2 |& I, p
set trade-record-current lput([local-reputation] of myself) trade-record-current
, w/ u3 Y$ h0 n- v4 h$ i: R  f3 K]7 ?: n# f6 a8 m6 b) w
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
$ a$ {! D( _# N( S. y;;
将此次交易的记录加入到trade-record-one
0 ^5 E% k) Y! ^) H6 o2 vset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 j: y- A) ?& C; a0 e1 U& F; Olet note (item 2 trade-record-current )9 Z. ^% |, C$ K; c& [* j  ^% [
set trade-record-current
# f6 K: J& J" q4 Y* T, n% R(replace-item 2 trade-record-current (item 3 trade-record-current))
' t) v/ m1 d& z9 I
set trade-record-current7 a8 [0 J2 G2 H- |7 u
(replace-item 3 trade-record-current note)
, j. p! K' f. Y1 J% W" W" D% c
8 G4 m6 j, c, @& g" X, d
5 L- E4 E2 y' ?* i  S2 j
ask customer [) |" h+ G1 |, _6 v& V  ?5 e5 ]
update-local-reputation
! W7 k3 F' m/ C" [0 p% Nset trade-record-current
" @5 s; s2 q2 w(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 C7 F7 }7 g0 W6 j4 f! i8 M# j]/ n8 m) Z7 R) n  n. I

2 @" I) |, f8 B: w# f) M1 I
' B4 P2 q! a8 `! s  i; Q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& N% w- g1 }/ _4 o! ^( v  V9 ?8 w

$ B' w! h, E6 k4 jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
/ c" I* n0 N( d) A* s;;
将此次交易的记录加入到customertrade-record-all
+ m! t6 y# \$ ]end
0 Z1 @0 H3 `/ D1 Z) L
# _# [# R: E' F  K) O" X' \to update-local-reputation
5 U# i% J. a1 \7 b% T1 aset [trade-record-one-len] of myself length [trade-record-one] of myself% W  J2 e% z  ~) m& y

0 s8 {3 c8 A+ G2 p" U) f$ _' q6 D8 q, ]% X, m# F6 d
;;if [trade-record-one-len] of myself > 3

+ Q2 y9 k8 {% Zupdate-neighbor-total
' `* W, {8 |3 P' \  r;;
更新邻居节点的数目,在此进行
6 X- E* @# P% R' W2 Mlet i 3+ w/ t' b) W: L: F& P; \4 ?
let sum-time 05 z/ K- b7 l! C: Z# S4 w3 n
while[i < [trade-record-one-len] of myself]
0 C0 Y3 v* m: |: C$ g  y[7 \% a6 Z, \8 r+ ]
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( l2 L4 p8 I# S0 d7 Oset i7 @) D1 @8 S. H: `
( i + 1)
4 L$ Q3 C0 S- J$ r+ s
]
+ R; V  i& x' t' X) ~" c$ ]7 Zlet j 35 U/ v6 [9 W# _
let sum-money 0
( Q& |$ Z7 c2 @8 j; Zwhile[j < [trade-record-one-len] of myself]
3 v8 Q. w5 T2 X- ][2 x$ {& e; N% r! M3 U, d
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)
. h, h* W+ N) u- cset j5 J3 l/ N" b! ^* E! U! X! R- ]
( j + 1)

  J1 }, x) S8 \]
- y# A; @% F9 Glet k 3
! d( Y4 K- t1 M3 X& Rlet power 0
# R+ v9 |* L5 s- g8 T5 H+ }6 ]0 Mlet local 09 U0 m* M( y) R0 L2 E/ p
while [k <[trade-record-one-len] of myself]! T2 O% R% s  S7 |) y
[
" s2 C1 x5 U. Q# S# E. Rset 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)
( N* ?) B- [2 {  y$ i& @# V  hset k (k + 1)7 U% ?' s, d0 P/ E2 J7 I9 z
]3 Q. l6 P8 _5 X5 ?
set [local-reputation] of myself (local)  W6 r- t+ P2 f& A
end
- n3 m0 F% W9 A! P& E# C
$ c$ w2 ~, {! f  u0 oto update-neighbor-total
$ ?8 i4 J9 f/ p1 F- J9 h+ h: q% G" D  M0 T2 i" K
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* j+ f( z+ u7 }; b/ T

5 ^5 r( w, n: Y3 P$ b& a6 k

3 F: i4 V, n8 U  R$ f& ^5 Xend
9 T% [0 T" T. C0 D# ?- j* Y, `9 ]
$ L2 g4 ^/ a( wto update-credibility-ijl + I; ~! \2 O& d/ E( [
$ R+ y, K4 s4 m* c4 Y& ?
;;
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。  K& X& D$ n: @& O
let l 0% m0 z: }/ d' {. ~" C: f% O2 [
while[ l < people ]
& Y6 P# F+ ]$ K: z0 L7 c, c) F7 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
6 f: C8 R0 b- ~[
9 ~1 w8 e* X3 o$ x8 B. rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
- C8 J6 J- X8 @/ c, gif (trade-record-one-j-l-len > 3)* _5 X" `# H! v' Q% i6 c8 H
[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
9 C; Q9 M% J: n- p" X/ }0 Dlet i 32 h( U$ X; ~5 l- Y; V$ U# t
let sum-time 0) ?: p& T. A% c$ E8 ^9 _
while[i < trade-record-one-len]
1 ]' Q7 D7 F- b- U[
5 Z' L# X- p, a8 X# K8 j# yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
( U/ Y$ k2 Q4 cset i
( X/ y0 C% G: K  ]5 Z* Y% M( i + 1)
: n9 v% J* x# m7 H( ]
]
; E+ @8 G% h! Q- D1 e& ylet credibility-i-j-l 0! X6 c' O5 Y5 X( |8 w" j
;;i
评价(jjl的评价)
1 A* ?8 ?8 h/ r' Zlet j 36 c! h1 u( z! J( p5 l
let k 43 q7 k, `8 T3 b5 g0 f7 b/ ]
while[j < trade-record-one-len]8 \6 n2 f5 w2 o# k2 V: L' R# H
[
! Y/ h$ i! @; h; O2 `while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
; j  h% m) j) P% ^( O7 ?3 gset 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)# ]! z- E( E2 ~+ a
set j8 }) z$ K7 G8 |/ n8 _2 Z) L8 U
( j + 1)

0 P1 R! P, H; v3 B& i' p]
! u2 d4 h3 @) S# |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 )): K# L4 L; H$ p( ]: F8 o
  Z( m* ~! h# k! y' E

/ a" p2 i: ]# \let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))9 j( }" Y* m. m' |
;;
及时更新il的评价质量的评价
1 E3 [. T+ K. K! {set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 m; i5 k) Y8 t% d3 N
set l (l + 1)$ [6 C) Y. {$ p% C& |/ v
]
5 x. q" H- R( V( @: I' s! H$ Fend, y( a3 X8 F+ l) M" x# P- w

" p6 i, _8 Q5 f( b$ rto update-credibility-list5 a; X  g+ j1 N- e
let i 0  L) {- O+ J; i3 C( C
while[i < people]
. }& i! n! T2 Q! E& L( V[
, m0 ?9 L  d% }* Y7 e: d9 Zlet j 0
* E" Z* I0 O5 {, a# a0 Flet note 0& {" b6 U$ |- [+ s' ?
let k 0& `8 p, x4 z& c8 W. g' S
;;
计作出过评价的邻居节点的数目% I8 x# F" u& h  b4 P; l) `
while[j < people]
. Q/ W' f  ^5 ]7 `/ ^5 J$ k5 s[
, I3 V# V% _& s, G7 tif (item j( [credibility] of turtle (i + 1)) != -1)
- x( R6 r) I2 z. w4 I0 Z;;
判断是否给本turtle的评价质量做出过评价的节点
6 L) S9 F9 C: v! u5 P[set note (note + item j ([credibility]of turtle (i + 1)))- T* m* o( [) L% A8 _
;;*(exp (-(people - 2)))/(people - 2))]

; {0 v( l+ ?* f7 `% ]set k (k + 1)  T' Z% ]& q' ^# x
]
2 ?+ w0 y/ f9 ^3 sset j (j + 1)
: I. V4 v; C9 H0 d]
7 K5 `8 b3 {) ?$ P, ~set note (note *(exp (- (1 / k)))/ k)
! g* C/ R9 Q9 m6 _& E% {/ W! l! Hset credibility-list (replace-item i credibility-list note)1 n! r; J5 ?6 j& \! S* ^
set i (i + 1)- A2 T* {# B; H# H* i- u* l; z
]6 Q, {9 E, B+ O- U
end5 [" e! d" y" |$ ~, q/ l4 N
! l, }, i  Q! _/ j) }1 Y! w
to update-global-reputation-list
: F5 W# t$ u/ C' Wlet j 0
3 O) W  [1 D9 M4 gwhile[j < people]+ Z6 ^0 G% @+ a' U0 u% T
[
. p+ |4 i8 u! E6 mlet new 02 a, o$ j) i: Z4 c
;;
暂存新的一个全局声誉4 j3 C9 o: |8 v5 B* H0 @
let i 0
" F4 n8 h& R8 Llet sum-money 0
! v9 b/ o) {$ ~$ m2 q! Jlet credibility-money 06 r$ p  f% |) K0 C0 D7 O6 l
while [i < people]
1 Y3 d- d+ V. B. O% B3 ~# w[# P2 z# ?1 Z3 U, @+ @
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 f5 t) \0 v2 Z4 Mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! C" A; F0 w& u% V% |; F6 p( K* V' o
set i (i + 1)
/ L. `2 C4 `1 n7 B% O]
* w/ d- ?& A0 K( elet k 0; q' d, |: N, v5 H6 g& B$ t4 G5 R
let new1 0
" U/ o' [2 }2 ^0 Uwhile [k < people]1 t5 B* C2 u# q3 B- \
[8 \3 H4 c1 ?; r8 q
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)
" e, I" h# K0 Z* @" |7 Mset k (k + 1)# F. [  P3 I" \" K9 b
]8 |: ~* p  x; g/ |
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
/ M! u- M- y7 J" n1 L' K$ ~% Pset global-reputation-list (replace-item j global-reputation-list new)2 v# k# E% a, [
set j (j + 1)0 X' T2 L/ r9 b! g
]% i9 i* a- p% x
end# t/ Y, a% J. \

- ?2 G6 y: q; [& K* z. f3 A4 r% t0 d) B7 C$ J, N% _$ b
: p' T' l+ h7 ?1 q  P+ x/ g
to get-color
" l. S/ h/ j+ {4 a) \, p: ?* J! Z8 n! `/ Q. O
set color blue
) ~7 g& r9 O- h7 S- H- s
end8 R$ \/ d# J" O  a% C0 H  ^6 A

: X; o! h% ]6 \to poll-class, T4 P9 U* ^7 Y: v% R2 f
end
; l; i' m2 _$ Z1 Q# I! n+ c3 I( a: R6 y7 ~+ }4 t: _
to setup-plot1. X$ e8 m$ J: ]; l' W" s  M
' |$ ^/ @" k3 n# ]! |' q" S! g
set-current-plot "Trends-of-Local-reputation"

4 x/ s9 Y8 i8 q" b& Y" O) V) p; H+ F6 S1 H
set-plot-x-range 0 xmax
# y! {) O( V$ k& Y- n# ], F
" g3 T; e7 S: _# B( L
set-plot-y-range 0.0 ymax

, `! y: X6 W! n2 [, a9 qend- J- ?2 y# k3 z
2 M) Q! {( K$ U3 `& {2 A0 ~4 ^
to setup-plot2" R. j6 ^2 s: M# g( J  U

/ R8 Y. V& a% tset-current-plot "Trends-of-global-reputation"

8 G- ~& p0 I; d1 o7 g3 j- ~+ e
! J6 k; Q7 B, _. Y3 {; ?0 L5 Bset-plot-x-range 0 xmax
6 d3 t+ B. ?7 d* i

* ^& W- S2 D& l/ v% }set-plot-y-range 0.0 ymax

/ M7 `* \" D5 s/ h) w& Nend
1 o1 _5 E4 @8 ]
4 o6 f. k- C- p: o" w$ O3 dto setup-plot3
2 U; z0 u2 N" Y3 `
* n( ]9 x" `9 ?  d$ O4 i& d; Vset-current-plot "Trends-of-credibility"
, M1 S7 }7 i& {  D/ _6 m
2 q5 z. D% K) |4 p7 g
set-plot-x-range 0 xmax

! `7 {0 Z1 X9 m6 V
" d, @! b/ ^4 Sset-plot-y-range 0.0 ymax

  K* u5 n; P7 ?6 jend9 \5 O0 h- \% ]5 m% \
. E8 p. g! M, I; o; r# ?
to do-plots0 y4 x6 j" l1 a  ~
set-current-plot "Trends-of-Local-reputation"7 R- C9 b$ D( j% u& e
set-current-plot-pen "Honest service"
5 p+ a5 G' u' ?. }end
1 y, z0 s+ ]' U( v( ?
3 A0 F; m# F+ W[ 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./ E1 f' n9 P/ e& h% I

2 {9 k* L; P6 j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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