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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:
) U5 X6 u1 U* h7 rto do-business ) v0 p: C' {$ V# t& R4 y' I# ]
rt random 3608 @0 z7 ~, C* G! m! {
fd 16 g. b0 c( }6 u8 A* o9 E
ifelse(other turtles-here != nobody)[2 B0 c; a8 @- F6 y. c8 B8 P
   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.
2 @2 J9 J  A/ o+ K8 D   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    - @5 F$ ?  n4 J2 e, h% |
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 b3 Z5 m! w* e1 M2 q6 b3 G   set [trade-record-one-len] of self length [trade-record-one] of self
1 s" T1 v% o* r, ^8 @2 m   set trade-record-current( list (timer) (random money-upper-limit))( a' o/ u% g# @

; q% `, D; j' c1 `1 d问题的提示如下:
$ K& B% x9 N+ a( W9 a
0 q+ S- P9 b  c% W2 Q3 H  o" ^! \% Perror while turtle 50 running OF in procedure DO-BUSINESS
. t$ H  I9 x; [" A3 ^) ]  called by procedure GO
  `; u( _1 K/ c: X1 x3 q3 dOF expected input to be a turtle agentset or turtle but got NOBODY instead.
9 ]& _* `- N7 L& H' N7 F& m! v
(halted running of go)
( K$ ^2 j' M; Z- l* ^# @9 o1 a- Z& k3 I- A# V2 Y
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~~% t: }$ F: K0 t, B
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
- K; z# @8 P$ U$ Y0 g' lglobals[
) h3 e( m: j: Z0 C+ g/ }xmax
8 z( C$ y2 h( t. i  Hymax
  G# y6 L0 l9 O; i: Qglobal-reputation-list5 @* x0 c6 \* @( x5 n

2 A3 r' h, z9 t4 p) f;;
每一个turtle的全局声誉都存在此LIST
& k- C& g) f, g2 b; u9 [; @credibility-list
. f/ `( n- u4 F- P;;
每一个turtle的评价可信度
1 i$ s9 Z! \& Hhonest-service
( h& e! z6 J2 p6 q* q. Q& junhonest-service
1 n5 x& P$ ^! F  V' z. Loscillation3 K/ S" z. x/ U
rand-dynamic! c* V9 D/ Y' X
]
# S& g' w( X: U) N
" {( Z" L. [# t; @9 I  rturtles-own[8 w5 f- N& f& M! }3 D
trade-record-all
3 r7 {) N9 x9 P9 d' l4 K;;a list of lists,
trade-record-one组成- B# K" ~- S4 [6 E0 T6 N
trade-record-one1 |5 O: s8 U2 N
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录& o" O4 ?& {3 g9 s
$ E9 e% ~5 T# J/ F5 l, R, i
;;[
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]]9 j: j. N! a, s' Z4 Z3 x* I3 r: l
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]# _8 L$ y3 Q% ?- b* }/ a, 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list1 j. u( ?' v& P9 Q( F7 ~
neighbor-total+ q" c5 G9 ~" l1 @* c/ z
;;
记录该turtle的邻居节点的数目
: ?* g9 i" D, O3 e  etrade-time0 W7 b- j! D  q' |4 Z
;;
当前发生交易的turtle的交易时间- ]# ^! F0 n2 L3 K
appraise-give8 d# D" L0 c: b+ Z% Z8 g
;;
当前发生交易时给出的评价
8 b. H3 [5 K7 y- mappraise-receive8 _+ S7 f/ N! S" u1 W
;;
当前发生交易时收到的评价" X5 f0 |- A9 T. H% z
appraise-time  [) o7 H# i; L
;;
当前发生交易时的评价时间$ z4 n; K0 p8 J3 u1 H7 k
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 P- c6 `/ V! A# |- A/ t& D6 ntrade-times-total+ x4 A. W  J0 ?& p
;;
与当前turtle的交易总次数8 R4 P* b8 ^! L( o2 Q1 J" K
trade-money-total7 C  ?& a; x/ O* C
;;
与当前turtle的交易总金额& Z) G! \$ H  {
local-reputation
5 X+ ^$ n, i  w5 @global-reputation
8 t" R' s# W5 _$ w" lcredibility
6 r4 \2 c8 q  ]- Z& n0 K* A0 b;;
评价可信度,每次交易后都需要更新9 c: R/ n, ]6 ~/ S0 N5 V, p
credibility-all
; F5 |2 q. N8 T. E! ]" I;;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2 o8 N/ V2 g2 s, n4 ?
' v/ ?+ `5 z2 C
;;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
6 @1 y. U4 i' R1 e/ i( s6 M3 k- Pcredibility-one4 H/ ^4 j) e( X; l; D
;;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
9 v$ R) s8 `  l. N" K" C+ [global-proportion
( t# G; Y6 {- E" ^8 a' K: }6 Ocustomer. _; m5 j* u( j' ^
customer-no( I7 M2 @# {) p7 _
trust-ok
" @6 H" m% a, d+ W' B: t+ d9 `. Mtrade-record-one-len;;trade-record-one的长度& ^) O9 c8 L" j7 T3 c( b. B
]
  r% \& s5 J0 {1 Q  j+ W9 Q, p6 J% b& U. I# V
;;setup procedure
: K; q$ f& d% f$ M( L
6 p, A: u5 ^# E8 x, eto setup
6 g' t* ~* y* R1 A% f/ C( q3 j7 ]% g" [+ W8 d
ca

( g0 J4 A( U4 C% t! X* O/ H# K7 t% i+ ?
initialize-settings

; s% W* h/ b) o/ _7 @) e- D4 G) ?0 o& D; |  Y5 |
crt people [setup-turtles]

5 C$ L8 B; i" ?& L1 G" b9 r: R. |9 M' H
reset-timer
! |: a# Y8 d# Y1 E) O) C, x  _
* I' R/ H3 E% E3 \0 \: k
poll-class
& c2 k& B/ i! M; s& `
2 p6 ?1 R0 q( i  s
setup-plots
9 R' q+ v- l4 B

3 R$ z+ p, M4 bdo-plots

4 s3 o; ]2 ^. n! `7 oend5 i' s$ `# ]% L# R( j) k+ C
2 k5 ^) U0 z$ k; T$ |. k
to initialize-settings: k# h6 [# z* m, m, K: |
0 k# _3 E/ C$ w! A6 K# v
set global-reputation-list []
; J$ {) G: o1 [3 |: ]

$ E, `: [7 u' E3 r8 n% K* r+ iset credibility-list n-values people [0.5]
. @* D; p/ a+ H# F+ z

; G; }5 B( E! T/ I3 m. Rset honest-service 0
6 j; J  L. `5 m, }
0 D' Q9 {8 z5 r# K' _
set unhonest-service 0

1 d  I. D- r0 q" S6 u; q
0 }+ B+ @9 j9 ~/ _9 qset oscillation 0
- a/ w: n. L: T4 c; t

" J; e0 ?' p- W# ^6 k) Q" ^3 ^set rand-dynamic 0

$ Q  `& P0 [2 i/ v1 d# J; U) d9 oend5 M0 {" t/ u8 Q9 s* e

6 G9 U3 ?4 i/ I1 b" m6 Wto setup-turtles % c" ]/ q) d2 G, R) `0 x
set shape "person") A# s: ]; ^8 W7 j- `
setxy random-xcor random-ycor
- }/ z, O$ \* g& P3 w: t1 tset trade-record-one []
+ N' @' F% L& w0 f2 Z: g

" \& ~+ P& C! P( u- f8 ]set trade-record-all n-values people [(list (? + 1) 0 0)]
0 Q8 R* }% A' p/ {, c. B

  M6 i$ U1 }6 l2 kset trade-record-current []) ~" I# l5 s" D" {
set credibility-receive [], p2 b: P0 q2 q
set local-reputation 0.5
8 S8 E1 Q5 d# O/ u$ Zset neighbor-total 02 o6 [6 M  e6 J6 ]4 ]: Z
set trade-times-total 0
7 X1 D4 p! G5 m9 Gset trade-money-total 0- I9 ~- L- [" i: R0 S
set customer nobody- n- H' y0 K$ H) u) D, U
set credibility-all n-values people [creat-credibility]* t4 M. ^- b/ S0 Y0 j0 k
set credibility n-values people [-1]6 ]& \) F; ?% x9 C+ f* c& i2 h
get-color
# T2 U: O" Y9 o) i* S: m8 s

+ i1 [1 t5 n9 K' J( d' Eend" {0 i- ~( F8 Q
: o9 D4 r5 U: h3 l! P5 c
to-report creat-credibility$ g9 k3 x  I" x+ F0 }. A6 N
report n-values people [0.5]$ A! V* L/ {9 `* c  H# O* |  Q9 y
end
0 P0 h- H9 P( l7 I7 b4 Y; L: Y5 r. w* X+ g: A
to setup-plots3 P, @1 I( g5 X* c; X

) ]: b6 V7 _: Aset xmax 30
/ j1 }% s4 H5 Q) ]& }2 ~: y
0 Y: \4 {/ k& J$ S( `5 b- y
set ymax 1.0
# k) D' {6 G2 G/ E8 R

$ _. D+ f) V/ E$ zclear-all-plots

1 m- b( Q' V. D: |4 i) s% e* L$ J- [: x; u! ~: @6 X
setup-plot1
) K/ O" y0 O4 F# ?* i
8 P* O4 q* M: o! |0 Z0 D3 A! H# k; O
setup-plot2
! S( E# {8 M5 m  o5 l. Q) ~

/ k2 A# X# R$ D; C3 v- y5 T' ksetup-plot3
) t& X; H7 S: W8 ], |4 c
end( O2 l% `3 q2 v5 g0 ?7 U5 l

" p8 _5 H* O% s;;run time procedures! a# h" |4 S9 k6 d9 |# V- ~
4 M# N- L" A; [4 `1 l8 f& O
to go$ ~+ O# o9 F- q3 Z2 _) E) P
% n! {% U) h7 Y4 r4 f7 W2 s
ask turtles [do-business]

* ^. j0 N+ B8 send# m2 |) l2 T/ c2 o8 k- H

) y4 B9 p& F% }! m; L- M# v, Q+ A# _to do-business + @  e1 r) U# e5 x* O

+ y  p5 l$ c. l- c) Y8 e+ r( h
2 `0 c+ X  ?, J/ Urt random 360

4 D) E0 h% M. x  P% R4 q$ e2 y0 }3 ]! G) m1 ^: H
fd 1

2 k8 g9 S1 j8 k8 }1 H8 Q% m: g6 l4 }& B! |/ ]1 }2 {# E6 n3 c
ifelse(other turtles-here != nobody)[

* M0 h8 S, U5 b( M3 {" t/ H7 J. l7 ?8 @, ?* e' u- R! I1 ~
set customer one-of other turtles-here
7 \: T4 m7 e; K8 F  ?0 t
3 r' H  O0 O2 _4 ]2 D( e% `
;; set [customer] of customer myself

* X( n; I2 T: {7 q" t& o0 y
* R  \% O7 z6 G1 K9 N- Eset [trade-record-one] of self item (([who] of customer) - 1)' _; ~. Y3 k3 r0 [9 |
[trade-record-all]of self( b* t$ {$ A* r5 u4 {; T
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  ?% z( d+ n: f" S8 {0 _/ G% e+ X: s+ C! D
set [trade-record-one] of customer item (([who] of self) - 1)
1 m- [* Z4 {0 v: n8 B; Z[trade-record-all]of customer
) j. n: h: E' }6 B; g* W2 T# N

5 w1 I& r# T* C$ S2 ?7 iset [trade-record-one-len] of self length [trade-record-one] of self

# K9 i. M, p' F5 Z
7 ?# w1 z0 M/ w, u* ]/ |& m/ [set trade-record-current( list (timer) (random money-upper-limit))

- E6 n5 i3 v7 g4 h7 f# K
- M  N* R8 r6 D1 f& sask self [do-trust]
1 _3 J) ]* L$ a4 A* @% t  A;;
先求ij的信任度
5 R$ A! _% p" j& e6 k% E6 s- B
0 L6 X% m. P" kif ([trust-ok] of self)
- e2 ]6 e) Z) I% P;;
根据ij的信任度来决定是否与j进行交易[" L7 v" [+ L: g; M, F
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
7 S/ ?3 C& X, k  V# w1 d
, P5 O7 i3 I, w7 G; I9 D[

$ M! h) |3 w) ~- F2 q
3 A9 ]/ m' A8 k( }7 w! {do-trade
8 h7 t5 h2 W$ D
7 G6 G* J1 f8 K2 D/ `
update-credibility-ijl

  s& f; Y! @9 s% [. g  I, e7 V. w2 I7 R/ t1 x( d
update-credibility-list7 h9 A6 [: u! F. d0 J

( q% \( t, G$ M3 `. k# n/ ?* a+ c, a) B
update-global-reputation-list
# M2 z- W! n5 I% R

5 L* [! m8 N. i& u9 Gpoll-class

4 v. G0 h% i. u; a
5 P+ l; `0 h6 Tget-color
& Z2 {! g9 j  x1 h( N

! y: u5 O8 s+ p5 {]]/ w5 q( ?" l: J& j& V6 o) t8 y1 j
4 _" Y) ]3 s9 o  C% h4 o) L
;;
如果所得的信任度满足条件,则进行交易6 b8 j  I$ B; Q  j7 B
) w, O% H2 z" v( t4 \
[
; k( V" `. \$ H0 _! \3 E1 d
( E, _* |8 g5 i2 c% r
rt random 360
2 N# v4 V( s. {0 U0 k: f
# }/ P1 G; P: _4 @
fd 1
/ e7 }, F9 I) a

  M5 [- A& i. Q# A5 L9 e% @/ w]
& f: X1 o) ?( E$ h1 q+ E. G4 W

4 F; I' b9 M- r4 i1 k) z1 S9 send
. r3 X* ~6 x, f1 |
2 V3 q0 @* a( V7 g9 u+ {# q
to do-trust
- I' D' _" Z2 J# Wset trust-ok False% ~% {4 F0 [: _- `/ g7 ^+ [
6 @# j$ ^% \; M9 }' h( Q0 F) C

6 U1 g3 Q9 Q% V, M+ z0 K6 @let max-trade-times 0
* E. r* l& m' s4 P/ S. Aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 A# d6 G! D+ m% F1 c8 H8 ^let max-trade-money 0
( @' t+ p1 e* W8 qforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% z0 j  v& w7 `, Blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! G4 D( a% \' g6 }3 s* X

  s4 l- y1 G: t, l- P
  W9 Q, Q: a: e2 W
get-global-proportion
* \( f% O! B4 k! m7 @4 g0 U3 u3 Zlet trust-value; E& r3 X& r' L# O
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)

, o# a. y/ f9 T6 a% ^8 S" B8 j# x8 Eif(trust-value > trade-trust-value)7 ?$ m$ d* I) @# W- B( Q7 h
[set trust-ok true]
3 L+ q- O. z+ c7 l, f2 zend
6 ]% n( n2 w% `+ ?7 G$ K% e. T+ {% J2 H# D! a: a
to get-global-proportion$ S8 u4 |7 F  r& k
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" a3 A3 F0 l, i1 S- E6 \& [
[set global-proportion 0]
$ h5 V1 C5 U: B[let i 0) C2 S$ h' ]( [7 e6 ^: s+ j8 C
let sum-money 05 e6 l5 {+ G/ Y% `, V
while[ i < people]
. D2 n: J! U! F: V2 U/ i# u0 g) e[
- o  u+ a! L9 O2 H0 n! N! nif( length (item i
5 p5 v. P  J) w! F[trade-record-all] of customer) > 3 )
0 z6 J; Y' q( ]5 s! d1 ~0 Q
[* g1 x% c  R! V  H+ W
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 `- G. q! [' I5 ?6 l( _* R; C]& E+ W2 q: V) Z* q& ~1 \& @3 D
]0 |( s" E/ ^- l) n* J9 a! ?
let j 0
0 u: C1 j: ]) G  Flet note 0
1 w8 r7 z6 \5 S! X0 e, C! z+ uwhile[ j < people]6 m" G9 Q9 O8 u3 e8 Y& v2 T& j
[, J- ?8 l0 b$ F, {! I
if( length (item i
  e7 t" e7 U: N0 m[trade-record-all] of customer) > 3 )
& h- A& D5 x8 a
[; j. n& q: ]$ K2 R# {( k/ b
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 N1 J! i( z- z- W+ U$ c[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]9 C. O5 B. H9 J$ h
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& A5 @. K; s4 X]
$ j5 C& X8 V/ J4 _2 F8 E2 d]
5 F3 ^; Y- D+ X$ [5 U' x; v0 o% uset global-proportion note
- h3 |; f8 L! `' U]* M$ S1 C/ \0 ], P9 I* Y
end; G' H! x5 ~6 M: o* s2 `' y

/ j5 l' g; q4 v  O2 g0 j) x2 g% Rto do-trade
" G+ d; F/ K9 m, @1 M9 K% \: O* t' u" T;;
这个过程实际上是给双方作出评价的过程0 ?8 ~8 e: X$ z  P% L& l$ L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
+ z4 S6 [3 v* a6 g: M4 ~# Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; N! E, J9 C. T. m
set trade-record-current lput(timer) trade-record-current( B1 C2 h: A6 |: E8 Y
;;
评价时间! @$ Z4 N4 _3 y
ask myself [7 N2 x5 S; u# V7 ~0 _+ v$ A; r
update-local-reputation
" c1 d% m+ m% [; P3 Xset trade-record-current lput([local-reputation] of myself) trade-record-current( b4 U& T- f2 U: S- T
]
4 F0 V* k! T! W3 q. Y# Hset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 E2 i$ w/ V3 X  U4 F! Y* [. T3 j
;;
将此次交易的记录加入到trade-record-one) l1 H9 l( O6 w
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! ^6 T) \. ?/ U) Z4 z; g2 T
let note (item 2 trade-record-current )
, T0 y+ b1 k1 @% f$ `: Zset trade-record-current* E. i8 F7 G; A  @/ U) j4 Z
(replace-item 2 trade-record-current (item 3 trade-record-current))
+ m- `3 n( y" T6 S, h
set trade-record-current3 ~$ K) Z* I1 s) ~9 \
(replace-item 3 trade-record-current note)! y" j" Q+ H" \9 D
. G) {2 Y1 r% w' x! f1 h2 L

" V. H" L5 x& h: c' P; Z- qask customer [
& W' a8 J( _/ _- D# ~  n5 Cupdate-local-reputation" l+ J' I! [+ {
set trade-record-current
" ~# B0 L. p9 U( h(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ _' [0 b9 Z: Q+ C2 R
]+ r, r% H$ r0 N+ a  l& B

8 K6 Y$ F7 S+ [! P

- [4 N; v6 @7 W$ W! ^" \set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- Y# ^# Q+ q- s  i

1 C3 ?( r5 M* n+ _0 ~4 X1 @set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ I6 N6 Y5 f6 r9 a;;
将此次交易的记录加入到customertrade-record-all$ B0 S! L. r' h& P( h# ?
end
( u1 Q& T+ |3 [+ i, W3 ~$ _/ W+ f0 l6 l4 E3 V7 U
to update-local-reputation
  b& ]! s) r& C+ P# eset [trade-record-one-len] of myself length [trade-record-one] of myself, T" a& `: D' E6 L

/ y5 F, }" e! _. _+ z( l: N+ W
) z' Q# E* |  f" };;if [trade-record-one-len] of myself > 3

! Y: t- R# o' t0 M( a7 |8 qupdate-neighbor-total
0 }- l% k* B/ M- p2 k0 X;;
更新邻居节点的数目,在此进行
# v: A- c4 C& S! u5 Jlet i 30 O4 T  ]% L- b3 r
let sum-time 04 E+ Q5 |' I6 m, z
while[i < [trade-record-one-len] of myself]
& v5 T( Z8 b' k1 G$ V% W[* t, t" Z( ?% m7 }
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& r8 u/ m+ i8 c! V+ `
set i% S. W) q3 t- l' _8 Y. Z4 S; S
( i + 1)

, a( A) D+ C" ?0 D8 h: I3 J* T* A]1 U- M$ N- M% Z9 d; S! B  R
let j 33 q; `% ~: t( @
let sum-money 00 v8 A4 v2 Y1 V/ G# w
while[j < [trade-record-one-len] of myself]
! q- h8 D' c, G7 k$ i$ `* x[
# k6 p. }- g' l/ M9 m: ^2 Rset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)' `8 y8 h: {3 f7 {7 [) M
set j
7 P4 z+ a" F# C: M( j + 1)

  s& i0 W- I/ s; i]
5 c7 t( m* e3 r- [7 K# Xlet k 3
9 \8 y" H+ i/ }" ~let power 0
# H9 i; A5 S3 H& I( glet local 0
& n8 D- {+ f! n1 U1 Cwhile [k <[trade-record-one-len] of myself]
: j- m: Q9 \' ^. m6 P[) c: I" |  r! u! d: o- s5 L; O
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) 1 t; w$ s/ t) g4 E
set k (k + 1)' y4 Q+ O6 N  x+ P9 h8 m8 D
]% F# o( w0 b5 A+ N" N
set [local-reputation] of myself (local)" T9 p, X( Z3 N8 ?! B
end
3 ]% h% k! l! X/ x1 A' d- x
' L: T* v1 f/ {to update-neighbor-total
0 F1 G/ ~2 ?- v& D' v1 t" a
# W6 y& z: l2 s) wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) i" I$ `/ G, f7 y3 m
+ ]! E! e; H6 s) G/ V6 r, g
( ~" h0 n2 K$ @1 ?) K$ @# I: f
end! ?) n1 |$ K# B; y4 ~' ]
* E+ w  y/ O9 Z  h  l! l) U0 \  E
to update-credibility-ijl 2 W2 b# k+ c8 n" Q% K

: D% G! u0 l0 |. \;;
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。
: Z3 A$ L' f" Mlet l 03 s4 k9 o: z7 p' X; h- G, K
while[ l < people ]: l0 A  e; e, e, h
;;
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
1 V+ Y" t, w* }0 i+ ?8 b[
/ u: y: h9 R4 F# k% Y) f8 H: m, Xlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)" ]0 {  X* c0 f0 Q- L3 h
if (trade-record-one-j-l-len > 3)
* e4 g+ B3 W/ l[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
$ D" K: x( E1 D* @7 e  O  M0 ?& vlet i 3* c" a0 b. p$ r, z" V% }) U, w
let sum-time 05 h0 d* u7 t# B) F9 u6 o2 ]
while[i < trade-record-one-len]
6 n! N6 @1 q* I4 d( }( V[
: ^- P2 P% Q. Q' O6 }3 |set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# g( T7 N! t7 M! i( hset i7 d! [7 C  c) B" v4 r; D
( i + 1)
+ o' N0 n* D: v) t/ E
]
  @/ l" Q8 U% v7 e: a4 ~+ dlet credibility-i-j-l 0$ y5 t, D$ k7 Q" f9 f5 o
;;i
评价(jjl的评价)
7 W8 B) `6 T6 H- m! Q' R( j, }let j 3
# z0 b  }* D$ n% Ulet k 4
/ R6 j8 Q0 p+ E: Gwhile[j < trade-record-one-len]6 w! H/ u; t' Q( g
[: L7 Y3 z* u0 r/ W5 `
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
. T% w5 m- G" `! D- H3 ^1 A* k9 Vset 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)
  d) o* G1 `6 ^. @set j
) l; X  J5 F# C: }/ G( j + 1)
! w7 t- l* ]% `( w
]
* U9 H/ G$ K# j: Z: yset [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 ))) z5 `: o  |0 F( E* m1 F0 g3 Y) y
/ A5 {) \0 P9 u- I6 _
+ i2 Y3 ]. `, l9 x" a$ {: B) p
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ ?, |5 D4 a+ E+ I* m  x) Y;;
及时更新il的评价质量的评价" W( r8 E# ?2 K5 G
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; s9 Z" b/ T; T: q. {; uset l (l + 1)1 j* [- T5 D8 E  Z7 P5 A$ f1 C
]
+ H: m( P8 K) I6 a$ Nend" A) p6 Y+ b9 t. C# I- i

3 V  Q9 G$ ]$ R. `1 I' {to update-credibility-list9 O- g( u- O- `) C
let i 0
: e( G' y1 t+ V( T) m" c: ~while[i < people]
$ @  g$ A, u2 Y5 Z$ H  [[( S' k/ Y# _- c, C
let j 0
( j. D+ V5 o$ xlet note 02 P/ x2 C1 X& L" @
let k 0
# b* z$ e+ A; e7 v% {0 j8 R; m;;
计作出过评价的邻居节点的数目
+ e4 g9 w6 a6 N# Y9 P! @$ S, zwhile[j < people]' L7 {' R* \- W0 \( X, n* x9 |
[
. S8 X8 w# V: d7 v( ^5 |if (item j( [credibility] of turtle (i + 1)) != -1)/ F% j- H  z# Q
;;
判断是否给本turtle的评价质量做出过评价的节点
' c4 e* x6 O9 a% I[set note (note + item j ([credibility]of turtle (i + 1)))
; V9 p8 I- {8 G! b9 m;;*(exp (-(people - 2)))/(people - 2))]

3 i. k& G- y, {% o/ k  w1 N! _set k (k + 1)
: [6 Z" Y: u# H/ c" W]+ `% y! ?* |7 k' d" ~* a
set j (j + 1)* R; r6 i5 e+ z- `1 ^9 N
]# \$ ^0 Z0 `3 _1 u5 b0 h4 M
set note (note *(exp (- (1 / k)))/ k)
& h2 [$ ?- L8 ]set credibility-list (replace-item i credibility-list note), C/ i3 {' K$ t- I% P) H3 m
set i (i + 1)
: R$ P4 H$ w- k]3 [( e( p7 j8 l& P( T" R) r% o6 {
end% Z, l1 k/ \0 C' U" l9 W

' j  c$ Z# R4 ~4 M, Vto update-global-reputation-list
+ Q* l' t0 b  z5 O) m9 Hlet j 0* x! Q- P1 R  C) ?
while[j < people]- X; z- `* c$ Q
[
9 J, W6 o% Y6 B/ y; ^6 hlet new 0
! B+ C9 p# \4 w* A* b;;
暂存新的一个全局声誉" s! U9 B: A3 T
let i 0
4 B( l, G  _& b. I) h) @! t; h% F& jlet sum-money 0. G* u# L1 N$ `1 P, n& `
let credibility-money 09 N, L# Y$ Q( V" {
while [i < people]1 |% E* j8 [0 o- E
[7 _: p: ]  y6 J
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))# a$ _* C% \( S+ t# A. v! b
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))& G; j, F& m+ E
set i (i + 1)
1 s7 C- |0 t' K]$ S) y  N3 |6 S2 k( l% V
let k 0& }% C9 k& K0 x6 V
let new1 0
# c4 p. p+ C1 N6 p4 ?& M: A; pwhile [k < people]; [& K. T+ _- e# r
[( q6 s6 I3 \. z; Z0 `/ n7 V  W
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)
& M" o7 Z* H- ?2 P( ~set k (k + 1)
, @: B1 P& r# n1 s, E]
9 K, a& I/ S! U* jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & P+ Q' F4 E3 j1 F+ a8 V
set global-reputation-list (replace-item j global-reputation-list new)3 F& y% [! R* u
set j (j + 1)
; S. l7 b6 B! A]! @5 x; O  u2 o: W
end
( m5 u2 _) `+ P) R8 ]" E
  s( _9 c+ Y& d0 E  W0 N0 M3 O6 C: P
" Q7 M: u5 S0 d2 J3 Z( @! p% p
to get-color
9 {+ [$ f8 v' T( y; B
( Y% ?8 O) A( d# d. m+ w; q" hset color blue

, E1 ~# t% j5 i( x1 @4 a5 rend
* Y+ q' F6 a& ~0 x+ E' N4 ~, |8 O/ I, N
to poll-class# o- `. L% `6 @
end0 _) N" w; I0 B: h+ f

7 R0 b) w  P. g+ u3 Y1 ]to setup-plot1/ v9 P0 B! C: a3 V, s% g

1 k6 W. `+ t- R5 Oset-current-plot "Trends-of-Local-reputation"

6 w4 C6 B% I5 I( j1 q3 v0 w) J$ n, R: V, f& K
set-plot-x-range 0 xmax

2 l' t% i! v5 s/ \: H3 ?" D- ]- m1 C6 m/ b+ \2 m
set-plot-y-range 0.0 ymax
% \4 {+ @1 V% J3 X  }) C8 ~, X
end
" o6 \8 w. d# C: z! ]& N- V5 _* H8 }! e6 q
to setup-plot26 ^6 u/ {+ z; J2 M

$ Y. s( h, r: ^" Yset-current-plot "Trends-of-global-reputation"

' g0 Z& \3 f( t: ]  y) o) W, O. |; N' Q/ |) U. p* M
set-plot-x-range 0 xmax
, W. C9 r( i( w

: {4 r9 H5 y6 T7 ^9 yset-plot-y-range 0.0 ymax

0 C( O6 s( U/ n# B- O6 fend
6 R' u: J) P/ e3 A4 p- U$ H# {6 {& @
to setup-plot3" `- M$ f  U' O& v
% l2 P1 T. i; [
set-current-plot "Trends-of-credibility"

. _" Z/ c& }5 u1 \% b
/ O. }# ^- e) X- ~5 m; {; H/ Pset-plot-x-range 0 xmax
  I! |; S  U2 {8 C" [

" F- u  F9 S% i- D$ K$ _set-plot-y-range 0.0 ymax
4 o2 r/ X& |& _8 o- c
end+ H) I5 U& i6 s" v( F$ S( N' @
( r3 f4 t  Q. H4 K( k: K% c5 l, ^9 V
to do-plots7 S4 X6 v4 [- k( |7 }
set-current-plot "Trends-of-Local-reputation"
4 \. X1 R5 N, @set-current-plot-pen "Honest service"8 y# k' N% k( m% O5 m
end. [, R6 P9 G0 R( Q
. H$ [+ E2 K% p  j8 q3 b$ T" ^" o$ k
[ 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% h/ E3 x0 {% l4 `
( P: e9 m: J& X; `) @$ Z9 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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