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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:
: e1 e2 Q% U& zto do-business ! [& V) x2 r5 ?0 g
rt random 360
. P% Y! c: C& X6 ^3 V fd 1* Z4 q! D! t/ F- l: ?
ifelse(other turtles-here != nobody)[- C. \* _( ~) d. f4 q$ X: d
   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.
) G( G& e- p* O0 B   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 o! ]" B( L5 M0 I( X
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 d% F, l4 B3 I- q  g" p
   set [trade-record-one-len] of self length [trade-record-one] of self
- A# `  T; q" M7 X   set trade-record-current( list (timer) (random money-upper-limit))
7 R/ V) l/ W9 r3 j5 r: t$ W3 @' Y
# K7 k5 L* c' }4 G8 b5 v% U问题的提示如下:
6 B/ h7 b* H  z+ `0 D; |4 e$ e7 T0 D+ Y5 H6 q! [* Q' D
error while turtle 50 running OF in procedure DO-BUSINESS; X. L9 n% {+ w. V% \+ c
  called by procedure GO
6 f4 W. ?2 P6 [9 s% v' BOF expected input to be a turtle agentset or turtle but got NOBODY instead.: ?  z4 W; K! O$ I! P
(halted running of go)
" o; `5 p; e) u
0 _- j( w8 f7 E9 `; \9 q0 N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~~4 C6 i4 w* O" g, i. {  Z7 W
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
9 v& \! o: b4 |$ R% p- jglobals[
0 z( h+ O! B9 k9 cxmax
7 `- f: ?" X. o; `ymax9 A; ~7 k1 E! {2 @8 u! E
global-reputation-list% g! `# A6 r' E

1 ~4 O$ P, u: |8 p3 ];;
每一个turtle的全局声誉都存在此LIST
$ N' q4 A) E& Z. K  \; W6 V, fcredibility-list9 X1 X8 ]( h# E
;;
每一个turtle的评价可信度6 W$ O/ o$ q$ [" }& J7 b
honest-service, s5 A! f7 ~, B. k1 S: X
unhonest-service! q- w9 `7 H( `: d) a! {( N
oscillation9 S# I8 D% ~4 j+ [
rand-dynamic" D7 Y8 U( |+ V5 k* X# c
]
9 k: a9 g1 h+ w5 v) N
) V8 C" g, P% o7 [) t) |turtles-own[
- O% l2 x* {3 B+ w7 P4 [- m8 [trade-record-all$ R4 Z, h8 N9 f1 N2 r. H" D
;;a list of lists,
trade-record-one组成
8 M/ s( @7 x% W( S6 qtrade-record-one
9 b, L. [+ ~3 k9 o# d3 t;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录! t6 o: L! k& t: ^7 ^' l: H7 [% B+ r

  O. p" v) F/ k7 S/ W1 X;;[
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]]. X3 N* |* h$ `2 |( [
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]6 B4 P5 V- }1 o) t! z" R6 b+ f" [3 c* 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$ W" a* {8 O6 Y( V# O" }' `
neighbor-total
  N8 u$ R8 G% Y7 ]2 W" [1 b;;
记录该turtle的邻居节点的数目
, U0 i& u( M& I1 y, btrade-time
6 d  f2 i/ ~+ O3 v+ X;;
当前发生交易的turtle的交易时间
. j( n& J- A' s1 bappraise-give% b4 i5 X% r3 Q
;;
当前发生交易时给出的评价
& J! U  v' r9 I( O6 Pappraise-receive
0 r- @# e# V3 y' n/ |; Y% f0 G* w;;
当前发生交易时收到的评价
7 J( |$ d, u1 j6 T$ j) f. jappraise-time
+ N, R+ D2 D* [: w7 p;;
当前发生交易时的评价时间
. s/ U" @8 ]6 e( T5 f) Ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
) K; g" P6 U: H0 K+ ]5 e: R: Htrade-times-total
! y! Z7 F+ {# R( {! c  F;;
与当前turtle的交易总次数
3 m. l& K1 y4 }( U4 \" ]# ztrade-money-total# i& m/ E( w& K- x+ N2 |
;;
与当前turtle的交易总金额; L( W, u6 g. A9 \" h$ s7 a# {
local-reputation
1 i% ?) c" D, X7 K) [0 c8 ?global-reputation! X9 e4 b# H! T; T, W* x4 ~
credibility5 q  w4 J1 S& ?5 p' `
;;
评价可信度,每次交易后都需要更新% M" \6 k2 m8 n5 l2 Q
credibility-all
% ?# Y& s1 N6 d;;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. O0 G$ n7 c. A, P
( O% b3 P- @4 p4 B  V
;;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
) A2 A/ E* W9 Tcredibility-one
  L1 A/ o/ o0 N5 j;;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
$ N7 x5 H6 W) w% Z, eglobal-proportion
" x* k# P7 ^& W$ [: ^customer
! \3 [, M9 p: x' jcustomer-no
/ Y6 u+ x' k" c; Utrust-ok% v8 c3 u1 _: E  u. e
trade-record-one-len;;trade-record-one的长度; y: F9 F9 F4 v8 c5 G- T! T: Y
]
; P2 X$ }  A: t! |3 z  V- e- l# ?; g9 x- h
;;setup procedure: k3 n& u2 Z. W$ g, U

  M+ |& {- s3 i5 L: gto setup+ j' C4 t# l- \9 ]8 Y, n

5 {& E( n- B- Y& Xca

& U7 H5 W$ k. l. {) K- I1 z8 m$ p1 ]$ S" z  v; m; Z
initialize-settings

% a: [0 f: L& I6 H" t0 g; Q- W) O- L7 ]  l
crt people [setup-turtles]

& V! Z5 Y2 r9 L1 _6 R- ~" w/ s
, b" t  A4 }5 r6 h4 I: N0 breset-timer
; F& d8 K$ S& M) e* u/ C  v% D9 Z

/ B8 O0 ?0 t4 c# jpoll-class

% O3 B3 S9 U1 b1 E! x1 _0 d5 {
& c/ O. r! }) v* H9 msetup-plots

+ K( B% b, g4 R# c
' S; M" f7 `, R* ydo-plots
2 ~; r  v6 R  D3 G
end! f9 Z7 `7 k+ o3 G, A- N8 i

+ p* s4 b: Q7 D' b( W( ~to initialize-settings  ~2 n& x8 C/ n) M6 `1 ~* n$ h

9 H$ y$ c- N' x; O6 Q0 F6 i3 [, lset global-reputation-list []

! ^0 j$ U! j- H$ x( P7 H
+ R% ]" l9 a6 o$ R% i9 |$ ]- }set credibility-list n-values people [0.5]

0 W* K  E5 Z8 y/ u, |) ~: |
, P& }' b3 u9 U8 \set honest-service 0
5 i3 a( H$ b( z- r
; y5 h$ E/ p/ Z7 W; L
set unhonest-service 0
2 ]0 P0 d0 q6 r# `4 O( j
0 ~/ X* _4 q! h/ |# i3 ]
set oscillation 0

6 F( O! q8 Q1 g6 O. J, O- c$ O& Y# O9 W5 P5 h  M' @1 |
set rand-dynamic 0
4 x1 S* H+ m6 ]$ |
end# n8 w- k! Q7 E& [
, I) c' y; K( x. l% r- }9 R: t
to setup-turtles 8 _. o" t- L& ?8 f8 ]7 c
set shape "person"/ M8 ~# X# G/ l6 F# T
setxy random-xcor random-ycor
/ C' s, v9 Q! k% E6 s1 w! lset trade-record-one []4 z4 Y2 Z( l5 Z# u5 M
9 d, C- G5 E9 d" U7 j9 u
set trade-record-all n-values people [(list (? + 1) 0 0)] . N$ @! l  R6 C+ X

7 w* c* j4 T! E  }( [set trade-record-current []* E1 U! H" U. z+ w2 p# j9 ?
set credibility-receive [], L3 W  z6 R' r* v% I, x$ j
set local-reputation 0.5
6 `4 }5 v, j: a5 Uset neighbor-total 0
: @+ D7 j, X6 kset trade-times-total 0
: X! U, Z/ J$ [+ M/ X, |  U! lset trade-money-total 0
  U4 r! I1 k2 h3 |* X) Pset customer nobody
  J, ~% H1 Z$ ^7 Vset credibility-all n-values people [creat-credibility]8 H, P4 D0 k' a5 L( D  |% y
set credibility n-values people [-1]
/ w8 Q, E! L: E+ j! gget-color
% B3 O7 l6 ^& G& v) v

1 k0 l, _2 V5 l( ?: }( Yend
& b- u( P# Z# L9 c2 M1 G7 A, H4 ~
5 e( K( E: Z7 O3 U" p2 I5 ?to-report creat-credibility
8 `4 o8 R8 ~% B6 l5 e7 t6 S5 ^! yreport n-values people [0.5]8 s1 `. i+ E# w! R3 |; k
end
+ n6 g/ N, M% a; q8 x, f; q
( Z( ~( _- |. [2 H/ W  X  mto setup-plots3 L2 }" h8 Z# D( c

: J+ l# ?4 g: Q% H7 xset xmax 30

" s3 z) c8 q2 K1 V1 u5 v9 ], ~: N: l/ O' h# t( X$ M
set ymax 1.0

% ^) K1 s" `6 x7 o, V( R- H/ Q
  Y6 T- s, C8 L9 C: I  G8 ?& R& hclear-all-plots
' w+ O2 G( i' k# X$ Y

0 q/ [" I9 @) P1 i( Y3 Rsetup-plot1
8 Z/ V/ ~, g3 ~" ~

+ E, l7 R; B) u. g2 qsetup-plot2

+ _; S+ v0 z( @+ W- i* k) l3 \) y' q# d
setup-plot3

* H* U8 V  q. ^+ U5 }2 `, Send  c" @7 r! d: C
% Q! Z$ g$ a2 |$ k+ ]( @
;;run time procedures
" m5 ]2 N, b( Q* k7 j  W
1 c  k) l8 B! j+ ito go
7 L: @" F3 N! T8 D: {9 g# }  D. \+ L- c
ask turtles [do-business]
- O! Z, T' Q( A% ^* v
end
7 t# A5 }5 L+ A* F" {* C, X5 x+ N  x3 Y2 V5 C- N3 A; v6 H  {
to do-business
$ S! H! w5 |0 O; w4 H1 d' }
$ w. h7 {/ t" Q
, G. d; B2 E( O6 O$ o6 ~! e
rt random 360

: c$ f% \- T5 v8 i; v' z8 C
# F. K' X3 `  ~* \fd 1

3 i5 C& Z& U# q$ @
+ C* _* g& s  T( z; s: ~; L# q2 k4 zifelse(other turtles-here != nobody)[
4 D7 M2 ]* ~# z7 `0 o0 F& b3 w  S
7 v& u3 a- n& ]: F- p, x
set customer one-of other turtles-here

" t  p( Q/ l' {; _0 U0 W3 M5 i# l3 y: Z
;; set [customer] of customer myself

3 }1 |9 Y6 y1 M, x4 N, a% G: O$ K9 M, Y: q' e& \
set [trade-record-one] of self item (([who] of customer) - 1)  c- ?, e2 B3 t
[trade-record-all]of self
1 V$ j% M0 H  o+ @. }; K;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
6 ^/ s2 N- W7 U9 h- D) H* M$ F
5 m* j8 M( B" M. b& G
set [trade-record-one] of customer item (([who] of self) - 1)
8 G: B# ?' s/ i( `[trade-record-all]of customer
) f% N6 b2 Z3 k2 }0 Y- z
* P  }8 `) ]  V& ^
set [trade-record-one-len] of self length [trade-record-one] of self

$ ^! f! t+ r2 ]. T4 ]4 N, O1 r7 v
set trade-record-current( list (timer) (random money-upper-limit))

3 t8 w" f  D- p* E# Z3 R/ h9 N, [
. V1 N: ^/ }  E% c" u+ q) O) O5 p: D& hask self [do-trust]- S0 V* q2 k" m% |7 G4 {7 J% w% Z
;;
先求ij的信任度- P1 T' r+ K% Y% x0 y# f/ P$ h

1 I/ v& Q' Z7 v1 L4 D+ Z) H1 r( fif ([trust-ok] of self); g; S- `6 o4 A4 x
;;
根据ij的信任度来决定是否与j进行交易[4 b" {3 s% j& Q5 o' K
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, w( \1 C2 m4 s8 z
5 g/ d& V) S. A0 C* m, d  ~" y; ?
[
# U( v. }( ]1 L" s" K
6 Y, h8 p" c/ \7 J
do-trade
# y7 f& x9 |3 V8 l3 i! i
9 d7 L. D- V, x5 e% p5 L
update-credibility-ijl

8 `7 |2 y, }4 y" I; u, v- B. P& |/ [
update-credibility-list
, m% _& e1 b: v' ~
  f0 K' ]# l/ B* e& B. e) d4 v

2 J8 m& U) E( k$ Nupdate-global-reputation-list

8 n; Z' u8 I, N6 ]1 i' ~! H9 j# o# B* |) O1 `
poll-class

3 ]7 f$ L3 r- b# ^1 q% j) q' N& t7 P1 }: f- K% `. v+ x
get-color
" l  ?; O9 ?3 T% Z& l* K
2 L- m( O# S$ z1 r1 w
]]) D/ a- m- q7 |6 ~4 t/ h

; q8 K7 }4 W: c, [2 B;;
如果所得的信任度满足条件,则进行交易
' h; ~+ G- Z* h" F) t; [: u7 E2 Y, W* f" \% ]
[
3 q" ~6 L. F$ l  `+ N6 Z/ V

/ D5 d* N! I3 S' lrt random 360
2 b) x' q! Y% ^! c) U& g

3 m* @7 n0 K* bfd 1
/ z( g) i- F+ e6 Q* t" }8 |1 J, K. d  e
* L9 D& o6 N/ v' a* o
]
) R7 `' L$ _4 p9 v6 f

& ~- ?! I, L: j! O/ `5 O- rend
9 S7 [3 x/ b/ n; a
# l( t) C1 x8 z2 b! C2 ]) E
to do-trust 4 K" A1 g* o! }& Q
set trust-ok False
7 }9 S. i# U% ^' v$ Q' u
, b- J" a9 _2 _' K9 H- u: {

! m  D" ?, i. s" ]1 P- @let max-trade-times 0
: I/ C, n' s' v& A5 bforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  Q" e' E. h5 {9 |let max-trade-money 0
. ], R+ ]8 W0 ~. g  I  Zforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 |1 M2 L% v% z' \6 F7 E+ A+ zlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  Z3 R9 ^; {/ r4 r6 L! I+ C: w7 T& r; }+ F/ e3 |. o. z! c

# r/ G3 n' U: I9 \' Y. s; kget-global-proportion9 n. E5 q! K: u
let trust-value8 ?2 x6 V8 v" ^. D& g1 R! y
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)

( M2 t# ]* h+ Y- c$ E* hif(trust-value > trade-trust-value): H9 w1 Y  Q- q
[set trust-ok true]
: E' |8 G) w. ]% `7 Z5 }5 Wend
- C/ o) ?6 P0 u; F4 @' v
" C' t7 A. Q9 ]3 t5 p# \6 k9 @to get-global-proportion
8 C! ~$ H/ Y- J/ Aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( ]+ @. b2 N% e! q3 n, A
[set global-proportion 0]
& ]( H* x0 Z/ S8 ]5 X2 z[let i 0
' k" N6 U; O$ W* D3 Olet sum-money 05 i- n2 \1 U! x2 M
while[ i < people]* x- I0 d/ ~: I) ^
[
$ x: m* y6 @7 i& p% ]3 X2 s  F  vif( length (item i
( J9 h# V( j( ^& ]; N& L[trade-record-all] of customer) > 3 )
! s7 c, {& y0 D2 d& {# c* @
[
% i0 X1 |+ `# n& |* K1 cset sum-money (sum-money + item 2(item i [trade-record-all] of myself))' ?; I+ F0 W* C; V9 X/ b
]0 B; y( a9 l+ t0 _0 A4 W/ |
]! b# s4 ?, A0 k6 I9 L: g
let j 0" q) U8 ~0 k0 S
let note 0* f* s7 e. I" Y; m0 g# y6 [9 A/ y
while[ j < people]
: O! v4 H6 g8 L+ C[7 T% a/ N! P; E! g! A7 y  {* X
if( length (item i: Q$ A( C* V& X, h' ~& l+ u3 ^
[trade-record-all] of customer) > 3 )
# q# d- ~4 b2 I6 m" Q
[
9 Q" n1 [" A3 t: a( z/ pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 R6 ^* a- o4 ]8 u( E[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]: y$ o3 T3 b: K" i& G& `! f9 l# f
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: _2 U& I# R, x, C  p% l]" [4 L3 K5 D+ e
]' h6 I. o3 g9 T9 _
set global-proportion note
. K; ~2 S& a* W* J]! ~3 o, d7 y, z2 }+ r
end
5 i6 V) Z" l' i0 F7 w. l2 {9 E/ I0 C( i0 U5 @' N  ^5 F$ H* D
to do-trade
7 ^7 }( U1 f, V$ };;
这个过程实际上是给双方作出评价的过程
/ i; |+ ]  P* x9 J" H8 n# e3 Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 E4 Z% s; ?! B& s0 vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 o6 F& K% G6 R8 O+ Q/ o( U
set trade-record-current lput(timer) trade-record-current: V1 ^. k4 m3 G6 v! U& J, G
;;
评价时间
9 A: J1 |9 ]1 B: y- Q: t6 s: ]ask myself [
/ @. ~* I  |! l# f8 g/ Yupdate-local-reputation
; I6 q7 D+ Q% {set trade-record-current lput([local-reputation] of myself) trade-record-current& h6 K( N( d; |; m7 ~% y
]
; u# K" \6 ^) l8 hset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 E9 y5 O$ o% t;;
将此次交易的记录加入到trade-record-one
5 h& F/ f$ B! R0 u/ z- sset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)/ E) e3 f# a) w8 q1 z
let note (item 2 trade-record-current )
8 t1 G0 ?! t7 ~! {) H; eset trade-record-current( w0 t: o8 `" ^
(replace-item 2 trade-record-current (item 3 trade-record-current))
7 w) J" g$ q8 h- U) w
set trade-record-current. T; m# i% N+ e) {! p- _
(replace-item 3 trade-record-current note)
4 M2 ^1 N& L/ d9 D" y; o6 @4 R) K1 R$ Y
* h8 Z, }( C: I+ }& p/ `
ask customer [
& W. k' x! U' q& Z- P# wupdate-local-reputation
5 Y# s. `- f9 x+ o& k( mset trade-record-current- K2 Z0 i/ I, I+ {" ?  ~1 u( K) r: l
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! d# ]5 q* B% [" p  b; ^]
: x  q+ E/ l3 y. S4 z8 A2 s
: ~  u  ^# O. L/ ?

) B  ^$ i5 m3 v) S/ f+ }- c6 ~$ Iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
9 f- @& K' E0 A* v9 Q% @

+ z5 a8 p; M9 E! k2 Aset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 _$ E5 Y+ X, [: \' |;;
将此次交易的记录加入到customertrade-record-all
2 G1 I% B" ?' F( B1 _end) j; }3 N) t7 j; m9 z: T" y
" ~) E4 G: ?; P3 P( }& e* o2 B
to update-local-reputation* U& X# N1 z* T) |
set [trade-record-one-len] of myself length [trade-record-one] of myself4 }8 K! N) d2 A0 e& W1 E
* g4 I- e- p7 @+ m3 Y/ b& R! a, H

, I) Q/ W; T  X, W0 T: d;;if [trade-record-one-len] of myself > 3

  A8 y8 c) c$ M/ d6 T3 uupdate-neighbor-total
4 R. c- t/ l' J) w, y;;
更新邻居节点的数目,在此进行
. f# r$ a' ?8 W6 |3 mlet i 3/ _2 _' Y" a0 ]  x6 C+ w. R1 Z( d
let sum-time 0
& F1 y, r$ S' y4 S! m7 |$ p+ [while[i < [trade-record-one-len] of myself]) D, r; |/ K- x7 O0 a; f
[" ]) W4 E1 M4 x' A4 E5 B
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
$ s" L! L' c( T6 }# eset i
7 S; f6 F+ A% H; X, I5 S( i + 1)
. X# a# b5 ^5 c1 K3 n; f
]6 t3 l8 c; m4 z( u) _
let j 3% _9 Q2 x1 z/ U4 z
let sum-money 0
" C- R6 _6 w) q4 F2 f" Q3 z2 T. rwhile[j < [trade-record-one-len] of myself]
* P5 T3 @5 Y0 j[
: |6 a. r% H4 r% Mset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
. ^7 [3 F9 v( D0 _8 a1 ^set j
3 E; v/ y: K9 U; j! U( j + 1)

( ^7 s- R- C( Y3 x]1 R7 o5 ]) d1 S* G' b: K
let k 3) {; L: k$ ]" M
let power 0
8 Q1 A2 ~+ T0 n1 o! a. N% I2 _- Jlet local 04 V! _  [' w% w3 p! s6 e
while [k <[trade-record-one-len] of myself], ^) N# |) g% R7 j7 q, y  [' x
[. m8 z; T3 G/ x" F9 j$ m4 x: h
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)
: O. `6 ~) ]. Yset k (k + 1): h5 d* _' \( |8 z) I
]* ]' W7 O4 D# s% I, `
set [local-reputation] of myself (local)
% |/ e# ~+ a: E3 a5 bend
# u' q+ t5 ^; e4 Q) H  ~1 H* [8 [9 G3 c& v/ k4 P5 ?+ y/ v
to update-neighbor-total
: @" o" V- {0 B- r2 l& s/ T) L% }2 v8 t- T# ?: I9 Q' R! O& A+ v7 r+ p
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
" e; @3 s) M# `. n0 R) i% f5 C( u8 x& ^

& K6 t( m: \* x/ U' Aend# j' B& f5 J& _+ a7 l* U
' S9 F" z5 p& D) X& C
to update-credibility-ijl ( M$ N- E! v3 a% a

! ]2 M0 h3 D, f) k;;
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。; j; ?6 S  |: R
let l 0
: q2 Q5 V1 X- |! N4 B6 ~while[ l < people ]
  ?8 r( W) z- \; r/ M! L' S;;
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. w: f6 R# i6 D( K6 [3 U
[
8 |/ }. B' u0 v" J4 F7 d3 \let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. `! V# ^3 s2 c; i8 O7 hif (trade-record-one-j-l-len > 3)
0 n7 J7 A8 q% o( I, g4 n' T[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
# i  B3 j# T8 b3 }let i 3
7 e, d/ H4 X3 q3 F( y. N" P0 B8 `let sum-time 0
- V0 d6 G# [  s2 q) Y, Bwhile[i < trade-record-one-len]3 M6 }9 r. A5 A2 g5 c" o3 y9 L
[
: `/ a8 @6 ]' }- X1 _6 A2 Cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
  \# {8 N4 H& V2 ?" xset i4 Z( T+ Y7 Y: `) f  i) i
( i + 1)

; @& m& ^7 K! c& {1 w]; }# Q" i7 E7 Y
let credibility-i-j-l 0+ _  B# E) k8 v% z  d" A( Q
;;i
评价(jjl的评价)
- B9 G: V$ g3 W5 x$ C' zlet j 3
/ z! `7 |; b% t% Q& _$ t" Clet k 4
, s$ v: b& E/ y$ d! H% Fwhile[j < trade-record-one-len]( {  K% T" E. E( Z7 Y$ g& x
[
( ^) p- W0 z+ i" }3 N& _3 rwhile [((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0 S3 r3 L/ ]( o
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)) S* v& B8 M7 u& c+ C2 Q
set j
" e) n# h2 S" T: @( j + 1)
) v- c( Y) d  Q1 F. M
]$ T3 f3 B5 K+ T4 Z
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 ))
+ S- C1 S$ K. G4 _; ?3 I' c0 e' G8 {/ W/ d8 {' h/ ^+ k1 @

- j7 z  Z" k+ ~7 mlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ P1 ^/ P0 H" U0 ~. C/ {7 d
;;
及时更新il的评价质量的评价# {5 A$ W' d8 U( o8 t1 Q" V& O
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& [# R' o' \0 [( l4 ]9 L5 P
set l (l + 1)
1 z. J# @& ?+ X. ^$ ^]
7 W# z; i4 \1 |end
0 u: {. h+ s0 o- X3 r5 U6 Z0 H: ?+ b+ ]$ M$ X* D
to update-credibility-list/ \9 v) n5 D( Y/ N/ H
let i 0
9 x7 w5 F0 a+ h7 f& fwhile[i < people]3 N! A3 R! _: f) S' F+ T0 |
[; @# k! w6 G# ]$ r3 p$ l' _( B! ]
let j 0" O/ P. c2 x* J. D6 `: _
let note 05 r2 d+ B$ n  [8 k+ l2 z
let k 0! ^( c9 ~/ m" d
;;
计作出过评价的邻居节点的数目3 V# ]! i# I  z5 o
while[j < people]
6 K) g9 y/ x9 \[  J$ S) ?0 T% o2 B
if (item j( [credibility] of turtle (i + 1)) != -1)
9 l" W- Q) u7 r) };;
判断是否给本turtle的评价质量做出过评价的节点
" I8 A$ q3 B( W& [& |0 N2 S" B[set note (note + item j ([credibility]of turtle (i + 1)))- R( T) N* b) [1 Z% P  b
;;*(exp (-(people - 2)))/(people - 2))]

2 _: H) t7 r3 U: S: p8 F. A, Nset k (k + 1)
" ~0 O( o0 p5 `0 ~$ A. L) L' V, e]
5 N6 t  l( E" A4 Y" Iset j (j + 1)
+ Y3 |. `. M/ X6 i, ^. F]
7 a7 _3 {0 x# tset note (note *(exp (- (1 / k)))/ k)& a; x$ b: Q% f7 p" J& ?" r
set credibility-list (replace-item i credibility-list note)6 H6 I# N$ c& J. X% N
set i (i + 1)
" |) Q; f* ]% ~9 n* F]- n' |8 B! H: s6 O! V; k
end0 N1 x% i# G; t8 m* U
/ A, ?7 g$ V/ t& ~: S4 B2 s; @
to update-global-reputation-list1 q8 r2 X) n* C: A
let j 0
! a- ^1 Q* j9 O8 Q" u, E4 Y4 P0 {while[j < people]
7 d/ s! ?0 u; D. o' D7 r[
# e# }+ e8 o; m$ n: }+ Rlet new 0" T, M7 C+ C2 Z2 D& Y! n# Q
;;
暂存新的一个全局声誉
  T9 I( w8 H( @, ~, Tlet i 0+ Y: i: ^6 S: c
let sum-money 0
, d7 Y, ?2 k: u3 Z6 k2 U% N. Z9 llet credibility-money 0
3 U* |/ b0 J* n4 O( Swhile [i < people]: U! c9 S) t8 j
[
- R: m+ `  q! S& P; Tset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( k9 ^& E9 i# N& \: Rset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ K' I! H) v" J$ Y; D
set i (i + 1)
3 J/ Z/ x2 n7 r1 \) x* [% Z' K5 w+ j. j" |4 C]+ P+ R0 {' W  m: P! {7 R& l+ g, P
let k 0
- E5 D9 X+ m- ylet new1 0
3 w5 e$ A! `; twhile [k < people]$ [0 e' }# }% f3 E$ J
[
5 R1 S% Z: n) 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)
% I6 Z; A$ `0 {set k (k + 1)& p- ^# o' m' z2 y* Q: G
]3 P( d7 y- v3 G
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " H3 I$ O  S0 x: f1 c
set global-reputation-list (replace-item j global-reputation-list new)+ H: X9 N! m! S" {$ u1 R( D  x- k
set j (j + 1)& V7 k8 \* E3 B! ^. Y; |
]
7 @, b6 T# K" Q; F( n  F8 w5 T4 F* Fend
; ~, M: G% a& G1 ^! D' F6 m0 r+ a3 L' Q8 D8 w$ y5 ?
; I% B9 M7 _. B6 o& n+ |( F# V; m

" C4 p6 b& y4 v! R* H* F) lto get-color8 o+ y% w# I4 c
# p" r* C7 R$ m, }# Q) F, `+ r
set color blue

# [8 }. |( D6 N4 o9 {end
0 [  _, Z" q7 [$ i, H2 k2 p: F( b$ b! w" j" V0 M/ r. @
to poll-class
# Y! y3 {( f+ mend
7 ~0 ]0 \9 [7 D0 p) K0 W+ l  S$ `4 z# o5 h( N( H) I0 v
to setup-plot17 e. |) `& Q4 i+ d9 |

. J# _7 V* s% Y' _/ u' sset-current-plot "Trends-of-Local-reputation"
$ W/ g  D' I9 A3 r2 q0 W; y

5 h) Q5 H# V* f" u, Q* `/ Oset-plot-x-range 0 xmax
) z* ]+ i8 {8 i
, H% w% Y4 E# c7 ~- l. }( s& M
set-plot-y-range 0.0 ymax

) G  |* V+ A, n+ Wend, M0 [; b- U  B" F9 ?

3 u# u+ H5 [9 ?3 y- cto setup-plot2( ^; ?% w5 D% W/ p3 i! M
+ w9 |8 v% m; a" o
set-current-plot "Trends-of-global-reputation"

' S, ?$ I1 m+ ]- K& m1 i$ W  H/ o- ]. |' ^$ \
set-plot-x-range 0 xmax

8 U9 ~5 E6 ]$ ?& K' A% S: D3 r  L- B
set-plot-y-range 0.0 ymax
' }( |2 E% Z- s
end
- n* i( U7 ^2 y+ R+ A- O9 r% u7 A+ X( _
to setup-plot3
5 t6 ?0 _. c4 u# o) ~/ T
) m3 v& f2 @/ V: ^) j6 C& J% `% h, Fset-current-plot "Trends-of-credibility"
( Z  x8 O9 `# g0 s
8 W' M/ Q# n) t4 |( f/ C) A2 e$ x$ w
set-plot-x-range 0 xmax

* ]1 d/ J2 S" ?, N& N9 t' l
- |$ j" M) ?2 D5 P" |set-plot-y-range 0.0 ymax
9 v, D7 ~- z2 |1 A$ k3 x2 x
end
& L0 M) I' T: z9 V, {( _" p; ]' \8 V
to do-plots( Y7 H/ F+ @5 y9 w7 W& v
set-current-plot "Trends-of-Local-reputation"
  F% `- S* G1 v0 Wset-current-plot-pen "Honest service"
2 m" _8 X' r1 N/ c% }8 Q7 X7 ~end5 S4 F, q/ x$ P% y# n% X2 i
. G% @1 D$ P7 N. J& l6 x1 _
[ 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.1 S* B6 s6 O; ~' g
/ q4 g/ H* F; Z2 ~' H2 `: s
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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