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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:
3 W1 Y2 Z4 ^' M0 Qto do-business * F0 L# o. K2 y0 q! T3 V2 F
rt random 360, ]1 J8 i0 E3 I: U# [
fd 1
, `. X- }- Z( N  u- l2 t* ]+ ^/ O ifelse(other turtles-here != nobody)[( g7 V0 @, }6 Y, K1 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.% F3 Z- y" \5 A. S! I3 ]$ e; p
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( u& q  g% Y$ |; t" [* f- M
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! t* n' \& z9 v
   set [trade-record-one-len] of self length [trade-record-one] of self; B% v+ ?) o; O: B) s# H' y
   set trade-record-current( list (timer) (random money-upper-limit))
) k0 w' f: T1 L  a4 I" Z: U$ g1 d9 k; G2 V2 y; g
问题的提示如下:
! N9 f1 w6 p" h9 w+ l) n
! u+ e1 K' P3 q- xerror while turtle 50 running OF in procedure DO-BUSINESS0 O0 n( K) C$ I) w4 e2 b
  called by procedure GO: j) t# C. K( x+ I. D. B' [( v: M
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
; F2 i( a/ I9 m! X
(halted running of go)
% L, j3 w: D) C+ U% n! W1 [( N7 \+ d2 P2 {$ P' W
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~~" v& K$ H8 Y3 }, e% q! l
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/ `1 |  P+ M* l
globals[
8 V( B' N1 P# L& p4 fxmax6 L# E8 |* c) ~$ z& B
ymax* _# z% ]9 Y* _, T8 W" u
global-reputation-list" l" ^  H: C6 K3 m9 M1 o: s+ l9 c* Z

- E, @$ Y) g; b# ^- w! ~" s# n;;
每一个turtle的全局声誉都存在此LIST
! d* @& h, [- `credibility-list) J" e$ y% O8 ]- \7 \6 P
;;
每一个turtle的评价可信度7 c1 X4 f6 }; M# x+ @. t5 H1 d
honest-service
+ z, C, w9 F$ Iunhonest-service
4 g6 N/ n  k- A- @% J5 o- noscillation  w, j4 n0 t* L8 c3 s
rand-dynamic
1 P1 t, I% W' x9 t% L; w]; O# b# F9 C+ F9 O
7 G* ]  S! C4 {
turtles-own[  v7 Q% R( x# I$ h5 ~
trade-record-all
) ]$ {( @: m& M& L;;a list of lists,
trade-record-one组成
9 t9 e' m% s! r; o8 t8 etrade-record-one- ^6 x) G, h( ^/ \( v
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录% X/ K  Y- S4 P
' y7 D4 V. B( O2 g  v, y
;;[
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]]) s- v' `/ k5 S4 x) M
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]  X, o& G# n' O6 D' Q* D
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list7 X# Y6 Z. x: M- c; J
neighbor-total3 m( N' l% m. K* y1 V3 I* f% O) j/ G5 l
;;
记录该turtle的邻居节点的数目+ B, q% \! g1 ?  H/ T- N
trade-time/ a3 U. p6 q  H* n" U# ?$ c
;;
当前发生交易的turtle的交易时间
- z8 J2 d5 O7 U" @+ s* |2 L6 Happraise-give6 D  W/ ?" o+ T- v
;;
当前发生交易时给出的评价$ B) E/ r! E5 _1 ~
appraise-receive
8 K  \1 O- |% X1 E( \;;
当前发生交易时收到的评价
8 q) l$ k, t& r! E. {  |appraise-time
0 }4 p9 @( }3 i! ~, j) V;;
当前发生交易时的评价时间3 }! F2 T9 `: O0 h7 m
local-reputation-now;;此次交易后相对于对方turtle的局部声誉( }1 P3 u; q3 g7 H! y+ H
trade-times-total
- w) C; k$ _; h: ], |; d;;
与当前turtle的交易总次数0 s; [3 T) H* g) @: _2 I
trade-money-total
; d; a) W5 @. b" x;;
与当前turtle的交易总金额
: `* j1 V) T9 F) v0 ~local-reputation
7 W# D' e* O7 `2 j$ zglobal-reputation* S# I  D) I/ I/ ]. ]& j
credibility, W( D0 {. ^% n) I7 W
;;
评价可信度,每次交易后都需要更新: Q" `6 F, H) Z- N) M8 T& @
credibility-all
( X! L8 A; i+ V) D' Y$ I; 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
  ?& @+ {0 V0 V3 U0 t* \  S7 B+ K/ O" T: f8 |6 ?
;;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) O. h5 `+ ]2 R& {* M; I
credibility-one
& v* Q0 a7 K3 x9 {) m& @1 j7 x5 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people6 \* Y5 u  n: t) g. z
global-proportion! i/ c, l, j) ]( H3 w; Q+ P
customer
/ N2 j2 o- w. L1 J/ O- Bcustomer-no9 q2 Z. [( k/ g2 N  U
trust-ok5 A7 G- m! w+ i
trade-record-one-len;;trade-record-one的长度! C  J  V) f1 H( H2 b
]" O$ B) v" z9 S# x

4 l$ \& G" C" X; ~5 H* @; z;;setup procedure
% {% J: i' b. u5 ^1 Y" @- q
4 S( L' q0 u: C4 l- U0 @to setup
! Q$ b" I8 h, ?( v% h! d  G! y7 P9 }) }/ w* h& D0 z, t7 d
ca

' g9 t+ b/ z! P; ]6 H3 t2 L" r% t
initialize-settings

5 w% F+ Z3 ^/ H7 K, D6 D
$ Q/ x3 d! j: M, lcrt people [setup-turtles]

7 F( Y! v. @2 X( {3 l/ A* B8 ~' g+ I; O( b4 J
reset-timer

; B% \( |# b/ h; I; Z3 _* @& d' N( Z. E1 J- _
poll-class

, Z4 s8 H. G( i4 E
$ J! \# O% {6 r8 R2 Vsetup-plots

" G% U& N2 e1 E) q8 \* s4 B* }
! z! h# {9 `& e6 p1 Sdo-plots
; s: ?3 ]6 B& v- R
end
4 b& i6 W, @. O+ r* o6 {
2 Z9 D4 i7 C6 g, f9 W" H2 t! x; @to initialize-settings2 r9 g# V' |5 o$ q* m& [
! \& B& o* n8 ~+ a
set global-reputation-list []
+ j! d) I: c- W8 E" L$ {
7 G* w2 _& I& \9 V+ k0 H9 |; h
set credibility-list n-values people [0.5]
5 D! O- l  m7 V
* i/ b; T0 V& F/ B; j
set honest-service 0

' T' z1 z1 c  U0 c3 y
- `6 o& |1 u% {( ~* b: zset unhonest-service 0
; n  Y7 k5 g2 I. I7 y9 y6 a
# W& X. n) o: G# I3 R# I8 A
set oscillation 0
: }5 P) p- c3 s
' {  n) F- i4 W0 f
set rand-dynamic 0

* O0 N' A) L/ L% ?; f& ~3 Rend
; E! D: [. E( S5 G8 u) J# @# ?; E# G" K/ E
to setup-turtles 8 v" x4 ^4 r* D2 F) C+ F6 U& b
set shape "person"+ e+ ~& I* L! [5 ]
setxy random-xcor random-ycor( m( `& R: c- q9 I; l  N! ^5 _& R
set trade-record-one []9 |3 B5 l7 W$ b, a
( Y# y; V5 D- ?  t9 P) f
set trade-record-all n-values people [(list (? + 1) 0 0)]
2 p; i2 L+ _" x! n) ^
  S3 C9 F4 C$ m' D, ]6 f
set trade-record-current []
, }9 h% [. q1 C( x& ~set credibility-receive [], Z/ {8 W7 Z0 z( p# ^% y- ^
set local-reputation 0.5
+ J$ p2 `8 p( E6 }3 p' A# \$ Eset neighbor-total 0& V8 p& Q4 }" w3 ^! T
set trade-times-total 0: A7 t9 [" m$ m- W: l% R2 G
set trade-money-total 0, y6 Y; J, w, x" |+ x" O% z
set customer nobody& @7 @3 N. c* F
set credibility-all n-values people [creat-credibility]
) k# L! b1 D0 I  F9 qset credibility n-values people [-1]" ?: ]; ?6 X, q4 y; H% h
get-color# [* U- J5 i  i! W& d0 {

$ ~. N3 j9 ~8 c. D% |end1 d- k) L( P5 Y1 e8 A
) v3 M7 }! F) y- B: s% q5 h
to-report creat-credibility2 v7 `- I2 e4 X0 R4 h  i, T
report n-values people [0.5]
$ A0 j4 `+ G6 d4 g3 L# E( uend8 r0 I6 B: [* V1 o  c8 D; B, b4 |; ^) C7 p

9 ^; u. c% {8 Z2 uto setup-plots
. [& n  S1 N1 \  s' \! D
( V; O! X) M; Z, V0 i7 s" @) xset xmax 30
/ L7 s, j+ A/ o9 ]
/ h* @, l& t9 z1 F! z; U8 y8 Y6 m
set ymax 1.0
: z5 f0 w9 o* \* y  p

5 i% L$ q! \% _3 i2 B6 z3 oclear-all-plots
0 c; T$ l! o2 v& m$ {

" m, j. V9 Z+ v; Osetup-plot1

( _$ m- a3 U7 a  ?% {) e# z; t8 {8 o2 N0 ^8 P/ n% V8 m7 X; _% C
setup-plot2
' }4 l% ?" |" X, ~$ u! M; P: |
+ ]: _/ G/ G6 M: R7 F, d1 X
setup-plot3

2 C( i$ r6 B1 t: u4 Y! i' J% f5 [end. B$ c" }- P* E1 n7 }

% W; J" `" F8 {6 S( [" J;;run time procedures
5 ~" B, z4 M: }' m- ?! M9 _( v4 }: k  e) k
to go; Q: r1 s8 ]8 m- _3 ^# x- e3 d
1 U: y% _0 O$ ]3 H/ w7 X
ask turtles [do-business]

7 q2 y4 l. I  H' J/ m% ^end
" b7 ^4 e! C& W5 c2 S4 C1 k0 s/ V* v8 |: c
to do-business
- \) o; R  ^+ c$ W# V

& _, _* |  h. ~: `
" K& ]. R$ \* d' xrt random 360

% z& m6 {3 e, s( |# J* N( N; z# L8 X9 `
fd 1

5 [4 T) u" N( H& D' u: B& |0 b! H9 c1 `
ifelse(other turtles-here != nobody)[
" @1 @0 y, t: P; x+ V& m# Z

0 b# O# k- t5 E1 W1 R- w' z5 X. Eset customer one-of other turtles-here
2 R5 J9 x5 ~  D% R. w+ Y

6 B8 Y. A: f+ }  `;; set [customer] of customer myself

, `  \$ X: Y' s; s( ?$ R) u: O1 N- T
# c2 M7 ~) z( C7 j, p9 Oset [trade-record-one] of self item (([who] of customer) - 1)
' `! K; p& d" ]( `. J, e. N[trade-record-all]of self
7 Y! m/ C# N( m4 a, `7 C;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

3 @4 P3 }) Y) D/ u# K" T, X
0 D* E) ~4 {- e" G3 G9 {; aset [trade-record-one] of customer item (([who] of self) - 1)
; W0 l9 M; ]* C* m! h[trade-record-all]of customer

/ M0 @* ]. F0 K+ a& c! O1 g$ F  T8 a$ J7 G2 r1 \$ U7 u
set [trade-record-one-len] of self length [trade-record-one] of self
9 V, @* p, L- L

8 q# B" K3 P. m- }- Dset trade-record-current( list (timer) (random money-upper-limit))

' N  a' |( q' K) h: R3 h# `
7 Q( z: h2 K* X% X" S( [ask self [do-trust]
* r" Z! D1 B9 X6 w, ]% {;;
先求ij的信任度" y8 u7 U! ]. N/ }) t0 q
6 v( |" N# S  K1 J9 ?' ~
if ([trust-ok] of self)( x  I" S/ d, J' K5 e( P
;;
根据ij的信任度来决定是否与j进行交易[) n+ X" u9 ?) e+ ?! p9 z. p9 ^
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# H) k$ z% I7 A% U1 l7 b
$ \( p" A/ T, ~# V' Z
[
) p" k6 V; s& I6 `% ]3 I2 X; Z
9 I+ ^) O& a0 t8 a- m
do-trade
# @* n! W* @2 K" [' Y* i
) M+ f6 d5 {7 Z: s; @
update-credibility-ijl
; z; X6 H- d+ Y* |

5 A( x1 B( i8 X& g: ], A6 {update-credibility-list& m6 `  m8 O& q: y

  J2 @& q; D; h# d, u: m* ^3 t+ g, K4 Q* b; T
update-global-reputation-list
! i9 o4 k3 o5 S: a! g1 s

) R' m% e+ v- a- Z0 l5 Gpoll-class
+ O3 i4 p7 g# ]" \& S
  l2 M" z3 L- U
get-color

# F9 y9 Q! w) F3 C5 R5 F
; Y, z) j4 `; V* Z3 Y, ]]]# l, D3 q3 e9 }+ z1 h
) G" j0 O- Z; c' U# b1 C
;;
如果所得的信任度满足条件,则进行交易
1 q- J5 \. \4 g
/ t7 a4 c/ d: H[
& D+ ~5 n7 A/ ~! T2 E

+ i, D; u. O6 N- c3 mrt random 360
4 D) l; O$ v1 f

" \* c' y5 Z. F4 r+ v: }fd 1

  D/ O4 j+ R4 V5 f# e$ Q6 X! ^
% o2 p' L$ h2 w: w8 s]

1 M: }: u1 Q% n0 S7 E# ]& F
+ Z+ Q2 g7 O/ j& w+ z3 Lend

/ \7 I7 ^, b" d  M" i& m. p% q- W
to do-trust & p, \7 p/ h9 h" O* S) y
set trust-ok False
5 a+ @/ k5 y8 C0 r0 x/ V: F8 K6 I  \
4 A, n+ Z, O/ ], k+ m+ S3 j
let max-trade-times 0% ^5 j/ I2 V8 ?% V
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 g' o# u! x0 G5 jlet max-trade-money 0+ ?# m2 o; ]: E
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& z$ {9 R" E+ h7 Q9 o1 b* J
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ A, O/ O$ {( J8 h. \5 Z) S! M- P7 P5 r: b, J* b

5 z$ D; Q4 T$ g( S; u3 Jget-global-proportion6 {8 z- F$ E* b0 ^3 P
let trust-value! |8 p: G- L% W+ z% _% z5 [# l% g
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)

9 g# Q" B. {, Z6 b+ Dif(trust-value > trade-trust-value)
6 s9 C, X# N  D  {$ j- B[set trust-ok true]
5 w* y; W9 B3 |; E2 D, e9 Zend
' \* Q, J, Y3 f' \, a9 w
& P8 ~2 y5 W- ?) G1 cto get-global-proportion* V, n$ o: Q! Y  w
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- O& Q% D6 n6 M6 C4 }/ W
[set global-proportion 0]
! E. `' S% r  i- k2 G" b[let i 02 p0 h( a6 z) S8 o5 O7 D+ x. H
let sum-money 0: G9 i+ Y0 w6 ~. @3 f# q- I
while[ i < people]
7 ~6 `1 i7 U0 b: o3 o[) F, ?  i  B" \- }
if( length (item i7 _/ s  C. j/ s
[trade-record-all] of customer) > 3 )
3 t7 g. l* \8 ]
[
/ ~9 ?$ {# n- I* |set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- C4 p+ c) w0 ]2 v]" S+ s% K$ v8 e9 M" l+ w8 l
]
$ H& a5 @9 `: p0 p) [+ plet j 0, X! R& G0 Z( n  i
let note 0  \- v3 H0 s& X/ @7 A5 r; e
while[ j < people]4 `8 ^3 W4 p! s2 z" k6 |( u4 V
[0 `. c8 C* `% z% ?7 N
if( length (item i- I9 M1 L' m, \/ T# v
[trade-record-all] of customer) > 3 )
' C0 m  D! Y" A3 R- l
[
, ~- e- `4 N! a2 I0 R, bifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)) K% n5 `# Z# J# b) L2 C; W' c
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
8 K/ A# m! X1 R0 d# ?( u! E) C4 q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]3 d3 @0 \9 R  d- W
]
+ D+ f' |5 B6 y! l; A]
; g) f& s6 J$ c4 n. a0 H0 @set global-proportion note( d$ Q/ `' H8 I* r, a
]) x! w: [! |8 v' ~: @; N) |
end
( I7 b( a$ ]! |7 }0 u8 f: F/ Y1 `$ H- F% P9 X7 w, Y. L
to do-trade
- d6 `) x8 g* F% m  t+ @;;
这个过程实际上是给双方作出评价的过程
5 b" L% i+ A1 r, z+ o7 fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( |" N& Y* d  T( V2 Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 D) |" A+ D9 p8 S3 r
set trade-record-current lput(timer) trade-record-current9 i7 H5 p  y- Z7 `2 [4 ]
;;
评价时间; o( i& V8 M2 h! R9 J% x4 g5 ]1 {
ask myself [, U) D3 }  @6 t) W/ S2 d
update-local-reputation# x8 V1 r2 [% v: P, g
set trade-record-current lput([local-reputation] of myself) trade-record-current
" N+ x+ }  J& o/ u; W& c]
( ?* T9 f- W* m# x2 R! [set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself4 x5 p3 z# V. `$ g, ]
;;
将此次交易的记录加入到trade-record-one
3 P, D0 z5 k+ s. v$ Oset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' u- R' t) p7 n2 Q; U
let note (item 2 trade-record-current )
/ g& i( I3 M. H: Sset trade-record-current
! ~! m1 [4 H: P- f1 M( h. {(replace-item 2 trade-record-current (item 3 trade-record-current))

7 b' Q+ C7 E% O  E3 B# b* j1 Wset trade-record-current
0 O. }6 P- H! l* ?: I(replace-item 3 trade-record-current note), f1 k  F. n6 P( k& A
1 v# |& B2 B- F1 t+ v* r5 e3 u" \

  x  H9 F6 f8 Nask customer [
0 _' e% Q  x% f  Iupdate-local-reputation/ N, J* }& }) r& C! q, V
set trade-record-current4 A; s5 U" _- ]5 S* Z/ H  x
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ D! N2 S6 d: ^6 |# ^
]2 U; s6 G; T$ S: y9 N

& ]0 Y3 w9 A$ c
( C) k7 G9 G3 q; a5 K4 y9 C3 Y/ w
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
) E$ E0 G# Z! F
) {) V1 |  N& D7 k# r" s3 M
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% l0 S8 N9 x) L# E& Y
;;
将此次交易的记录加入到customertrade-record-all  j0 [7 H2 z3 x$ ]4 L
end
7 g+ z5 A8 s* W* H: j, v( {- V5 m9 \7 z) o( r. s# t+ m+ {
to update-local-reputation
, o0 G& u0 H3 v: r6 mset [trade-record-one-len] of myself length [trade-record-one] of myself
1 I/ s, J* w  p" ?
* Q5 D2 `1 q9 Q8 ^
5 `: I+ \0 w; Q5 Z1 C;;if [trade-record-one-len] of myself > 3
) ?# U+ d# ^  \/ e' i$ ~+ C
update-neighbor-total
% M' B! X2 Q7 {- g0 e+ z; `9 l2 D;;
更新邻居节点的数目,在此进行
' v% @5 {" V4 Y6 B" S: i  |let i 3
1 a$ J5 K& J9 T. Zlet sum-time 09 p: u" a% j0 ^/ d! Z
while[i < [trade-record-one-len] of myself]
: H% w$ i, U2 L9 f! e0 [* V5 ?[
' e+ e) U4 Z! `5 j4 q7 dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )# q+ ]4 y+ v4 b7 @
set i
3 }" w+ I: R3 j" \( i + 1)
$ S1 v$ q  N' n0 E' q
]
+ W' H) D2 r+ m1 X3 _" L1 Zlet j 30 ^/ Q) L6 T  \+ a  n. {7 d
let sum-money 0: X+ N8 o! X& W2 U0 j: l" z) W
while[j < [trade-record-one-len] of myself]
: U5 l! v# i% T* c% y[5 n) ~! K2 b( T; o$ x" H+ o
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)7 L7 y8 A# D) _3 A4 _+ o8 I& o. s
set j: t# _1 H9 d, h/ B
( j + 1)
. Z( [5 z1 L$ u* w  c
]
; Q, u) t4 \- Rlet k 3" F7 \2 N. W5 X3 V( }, ^+ [5 F
let power 0) J+ G: M2 t, Y! @% v
let local 00 @4 r3 j4 ]" U
while [k <[trade-record-one-len] of myself]
! C+ V0 ^5 B; i[
& h$ m3 d9 H  r+ S6 L6 y% Tset 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) 7 w2 d6 t# u% q
set k (k + 1)# L8 y2 r1 Y! P4 ^  E- [
]
( U/ |, t! i: v: b: `8 t9 X: z& @set [local-reputation] of myself (local)
2 L8 _6 f, ~8 j; Uend
" n3 k* R: L- x3 L
, l) M3 p: B1 Z0 o  |4 D7 Vto update-neighbor-total
" d7 p6 A& S" i9 [$ P" j+ U+ p3 Q: ]! u" g$ g% |
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ t! x# z! n- Z* z, T' `3 z; A5 n5 v+ j3 k
4 k# Y8 _# Z) s0 t4 K
end8 x- ]  q3 o. a" |' H( i
- u, F6 r; R/ L5 T) H
to update-credibility-ijl ' p( U6 C$ U* L3 k! V
. x! t: D, A$ u5 W
;;
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。% G: a0 k+ R; y2 T8 {
let l 0
) [5 p( S- G8 o$ Lwhile[ l < people ]
; o* o% D1 M% B" |2 z;;
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7 I( y0 i& T* E9 x. R8 V9 {) d
[, Q- E1 i. t1 \$ X" ]
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)" ^  {9 q% D6 n9 m7 {8 [) Z& l
if (trade-record-one-j-l-len > 3), Y( u, C2 y" J7 X7 m0 N8 f% B' Z
[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$ F  e; ?+ o7 T7 s8 N$ b; m* I
let i 3
! k# L# H* d' j- E' Hlet sum-time 0
% g  V% f/ N, q/ Hwhile[i < trade-record-one-len]) p; E4 Q# v9 d: l! n
[' E' S; Q& s- U8 Y( n
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 {+ y' h- G. s8 o8 @set i: m0 [. h6 w( I. m, R. Q& Y
( i + 1)
! }- g4 e* p/ M" s2 b' i
]
+ Z3 ^( O& E/ \5 b8 Nlet credibility-i-j-l 0
% f/ j9 t/ U, x5 z: S9 o  \;;i
评价(jjl的评价); A) F3 l+ O  w! Y
let j 3
1 Y" i7 f4 \& r; |let k 4* B" U; a4 ^" K3 {
while[j < trade-record-one-len]
( i  {. ]' [5 A7 B3 J( x[- [  }) Z6 l' J
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( }* w' f% t8 T  E) y5 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)
" X2 Y8 Z+ ~2 |5 n. Bset j
! X* g$ M4 `& p3 Z1 ~% |6 p( j + 1)

/ n4 M; y! K( G0 K7 y7 g$ H, i]
2 C9 _, X* p0 g9 @9 {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 ))8 s6 i' \) F+ n6 y" R
6 N  \5 i6 b: L, E' j& u

0 X! S6 F7 l( L* [' }3 Llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& ^) y5 y7 R7 A' O7 E2 W, q
;;
及时更新il的评价质量的评价8 Y; U2 m$ ]# F: [/ U; C$ q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ s) K6 [) R6 ^set l (l + 1); X) D9 I* x$ S* d/ C2 ~3 ~
]+ h) r( t" K- M# q) N
end
2 k3 }" e: p2 m
$ B+ o/ c  }3 u2 |& Z" ?% Z* Sto update-credibility-list) G3 F* z" L8 }6 ~  D' F' g+ [
let i 0" `* ?1 h; {/ x$ m
while[i < people]
7 b7 Y2 r1 a5 b$ @6 w[
) O+ [& Y2 C" N+ Xlet j 01 H& h9 j/ X1 f
let note 0
/ F9 v1 p. R. s% J* m6 U1 C% K/ Z; ]let k 04 R2 o6 ~- t* E
;;
计作出过评价的邻居节点的数目
& A- s. O6 y; N/ J9 V! ^+ H" h) Iwhile[j < people]- I4 x4 n3 e+ Y7 M& q1 p' O# S! a, C
[
7 c, B: }$ u8 l: \+ k) }/ K6 A3 [if (item j( [credibility] of turtle (i + 1)) != -1)/ |- I( a8 C3 y; V8 a. l' _
;;
判断是否给本turtle的评价质量做出过评价的节点" n' L3 R* Z% K! h
[set note (note + item j ([credibility]of turtle (i + 1)))
! V  ?3 E( `0 p' R* ~" Z! z;;*(exp (-(people - 2)))/(people - 2))]
! N4 c: i/ Z! D( w
set k (k + 1)
) W: s9 s- j- J% [1 `]/ m; a5 @- g/ }& \/ \* o
set j (j + 1)
4 h: }3 V, I$ `8 [1 l3 T" l3 k& T]! T7 r( Q$ v: T
set note (note *(exp (- (1 / k)))/ k): R3 T5 S! s- w+ m
set credibility-list (replace-item i credibility-list note)
3 @+ O0 F4 T, s6 p6 L1 Pset i (i + 1)) L* S8 h. Y+ {$ `% U. c
]
5 t- j- O& t; p5 V+ r& F5 D# X  eend
6 e3 t" O% F5 J5 V) x0 ]
8 L' |: L* U. a$ L6 ]0 Xto update-global-reputation-list# H/ n3 {  z9 l2 l
let j 09 \1 P  y9 F0 v8 Y/ d# c% Y$ W
while[j < people]
! n% z! |; K2 b+ _% ~1 \; C[
- e, B) {. i+ \' q; S$ v! `3 h! alet new 0
% _7 A% `, S' t1 i6 Q;;
暂存新的一个全局声誉
; J8 i# ]4 a" _9 X* ]8 Vlet i 0
8 d# w/ D5 O( R2 Z. Nlet sum-money 07 e  V& h1 `4 }! o
let credibility-money 0$ a/ J/ t; S2 \$ G
while [i < people]% R) N) }9 z% Q  e
[
8 E; k9 p4 C2 K# Y1 _set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 z7 p& n$ L* R$ T! C* f% G" O& Tset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)): h6 i7 J9 A5 e4 ?
set i (i + 1)
. S# _+ N/ m: Y% U, x5 ?. h]  V5 W8 H2 ^4 p0 J; D
let k 0
" K/ f7 h: o+ f8 ylet new1 04 v) T' H7 S+ f
while [k < people]: L0 P1 }4 ?* N! Q
[" |/ A7 I- k& v  W) _9 g) p0 u6 R
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)
2 h2 q- ^( {. Vset k (k + 1)
+ ?/ v& C2 M" Z: Q. |3 s1 T]8 j7 ?2 q6 Q0 Z8 \
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 `9 ^# E9 M7 r& Z$ u  `% Y+ M
set global-reputation-list (replace-item j global-reputation-list new)
* R! [0 E2 _2 E3 g) jset j (j + 1)& Y' E/ ^" p% l8 j7 r' o: W" {
]7 \  M3 N1 G- r6 r7 X6 T( d
end: D8 {3 _& d8 ~/ l$ [
) ?# g1 P! x* G: U
1 Z# j) n2 l0 @# m5 P
9 w- u  Z/ ~: S* t
to get-color$ s  Q. \( a2 \! V$ S& f, c) l# q
' I3 L% C3 `: o8 j2 ]6 a/ z
set color blue

9 O* X* u1 W/ s. _end# A& f) q- E! ]3 B7 t, w5 v1 ~

, n( u% Y8 g. M! R# e9 k4 m6 x+ tto poll-class6 R* v! V2 @) B: Z; X. }$ ?" |9 D
end
% D: d4 I5 J  h9 ?3 A7 A6 m  J' c4 [* y" l4 z; n
to setup-plot1+ V' H" w+ ~0 s- l" k% U1 A  N9 L
2 R2 A/ m+ D( `2 l& t' Y7 ^
set-current-plot "Trends-of-Local-reputation"

; z+ f4 E8 i# h6 d8 X& W: I1 b6 v9 _& V3 K! D) S
set-plot-x-range 0 xmax

4 R* k8 J5 a9 D4 f7 r3 |; x3 Y& F- @5 b1 f  C# S) z
set-plot-y-range 0.0 ymax

4 g6 j  }, U2 b4 @" Fend
/ B& a! f. n/ B$ H. f, i1 h; b. [4 z
to setup-plot2' A0 Z, l4 n& h( F" U

; \% T' N% ^1 p1 Hset-current-plot "Trends-of-global-reputation"
  B+ U3 V/ ]( A, g- y
5 A' w* Q! P, T8 z3 W( v: `7 A
set-plot-x-range 0 xmax

4 E' P( x/ x5 J7 X: y
: K+ L" y5 q( t8 d) _; ?1 i7 v8 Yset-plot-y-range 0.0 ymax

8 i) b8 ]( @* n# B9 z$ Gend
% t: q' H. c% l2 T& o8 {- `+ X3 G2 z+ N. i' U8 i1 J% M# u
to setup-plot30 P5 I# a; X+ ~6 L* p& x
' F$ t3 F/ q/ t1 p7 M, R% H
set-current-plot "Trends-of-credibility"

( B7 |$ \3 J0 X: s3 c/ s7 Z
" {) y: g" F  v# F% v6 Eset-plot-x-range 0 xmax

8 o/ m: F$ C9 z8 ]
+ ?3 X9 Q; \7 h3 pset-plot-y-range 0.0 ymax

) ~0 e5 j  `4 v( \$ R* e8 S: Pend2 Y2 i8 N$ J5 l  p, s

! ^; K9 E/ G/ zto do-plots; H# ~. y4 f- I4 A
set-current-plot "Trends-of-Local-reputation"
+ X, |  g5 p2 \9 @0 b4 ?: i& nset-current-plot-pen "Honest service"8 u" v* x) a3 c6 _% T; D# i
end
! F# P2 X; ~+ o3 n3 c* ]1 L7 k. u( X
3 _4 _' X6 O; c+ }) o. Q# l. _2 l8 b[ 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.
  f8 n( b; w$ A0 }" c; m1 k! ~2 Q
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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