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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:
2 l+ X; |* B2 s: t) ]* {to do-business ! _6 N; E- N$ R2 ?- g# H
rt random 360
' `" _$ R* M! N fd 1
: b% `  M( ]* W2 |3 j ifelse(other turtles-here != nobody)[  z5 h  A8 u2 f& z) I
   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.+ o/ Y! v' D$ B8 Z& U8 N
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! q7 |0 h# `- m. z% ?: G) i0 W" q, ]   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  G% I4 M! ?5 q3 H7 @
   set [trade-record-one-len] of self length [trade-record-one] of self
) M- o& e$ t% X   set trade-record-current( list (timer) (random money-upper-limit)); Q6 x- g7 l6 ~6 i" m; ?9 j
* z5 M% D4 H9 w6 X+ ~! Z2 M3 Y: t
问题的提示如下:
: g, a9 G( g1 R* a, Y  W. O
7 o, u0 U' t* ]  W3 k3 Qerror while turtle 50 running OF in procedure DO-BUSINESS) s4 M; U; ?& v+ P3 p* G( h' {
  called by procedure GO! S& @! K6 `9 a4 u' Q, {
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ S9 C& ?  O+ I. M
(halted running of go)
1 [/ q4 n7 K% k
$ ^; {( Y! A; Q$ 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~~& C( }/ n. I! ~1 M9 ]' ~! g7 E
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
  J. \8 L1 L& r% yglobals[
# U9 h: `2 @' E3 Nxmax, z# q1 Z- Q7 M
ymax+ X: B5 R% ?0 ^& y2 \% |
global-reputation-list8 F, [3 a1 R7 o! h
6 a! D. m) r% u7 u3 @
;;
每一个turtle的全局声誉都存在此LIST' m+ m" Q9 d* j& K. U
credibility-list) ]2 t  W( m$ _4 p% E1 ~9 T
;;
每一个turtle的评价可信度
# P2 C0 B/ P2 e6 Y8 y$ Lhonest-service
$ r5 K8 I+ r( a5 A) s6 U3 Eunhonest-service
/ k  a9 g( e4 goscillation
# w) ?0 k1 H  h+ e6 H/ ~8 Srand-dynamic
: G, L7 `. @  N: s]: g# ?/ T/ c+ i; ?* N3 Y

6 r/ Y, i$ f2 y( b2 ^+ Hturtles-own[
' C; R; t4 w" w- b+ N$ s0 E' Rtrade-record-all
% U1 L* Q. t& i* O# y;;a list of lists,
trade-record-one组成  N( N$ D. X7 s+ }$ N# h
trade-record-one! }0 ~* n1 j5 C2 X
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( R& w$ I( F0 R6 l7 m' M
, o7 P7 z; l. l# }
;;[
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 {" _9 }7 x$ [( i8 r- \
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]+ H# L0 D# J- i2 R. ~9 O7 V! z4 S  v
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
& v. i2 b! S1 y5 a5 Z/ Hneighbor-total4 s1 y" X0 B- z9 P
;;
记录该turtle的邻居节点的数目1 g4 X7 X' K) t& D  b1 z
trade-time
: f7 {) o( {1 s1 B6 s! i;;
当前发生交易的turtle的交易时间) l* n+ m  V2 q3 `8 [8 |  y1 p0 a" M
appraise-give( {9 b6 k* Z( F$ H
;;
当前发生交易时给出的评价
5 ?% ^) J/ R4 Mappraise-receive
- @, P7 [3 n+ N) };;
当前发生交易时收到的评价  E* N& U3 h$ a# p+ u
appraise-time4 Q9 t0 g3 \' p+ L2 m5 i
;;
当前发生交易时的评价时间3 K6 j! a3 d6 e, o6 l
local-reputation-now;;此次交易后相对于对方turtle的局部声誉/ v  Y5 w' X8 f( w7 h. t# u$ B0 g5 O/ R
trade-times-total* M9 b) [8 `# m( w+ |
;;
与当前turtle的交易总次数
: a- {0 s9 ~$ C" |9 q$ R  J5 z3 ctrade-money-total
$ H* Z# T6 }9 R$ B% ^* X9 S6 b;;
与当前turtle的交易总金额$ E! E8 ~+ _- @0 q* H4 j
local-reputation$ j$ |& T* n4 s- |
global-reputation% y" I, h9 z7 W* }+ i1 p4 |; ~6 K' m
credibility
1 B) u/ s4 L% X* _;;
评价可信度,每次交易后都需要更新
. h8 K% m& h+ o! A  S# Ncredibility-all
% k" s* o9 E2 a;;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
, e3 o; X2 ~0 x  n1 C1 J& k+ i
: ?1 J8 H4 J3 o8 C/ f;;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* }% z% J  O* o' t0 Q8 p! i
credibility-one
) {0 r# K4 G. h, w;;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
7 v, u7 x$ ]& U( y4 m* Nglobal-proportion
" f- _/ V8 C1 {! M8 hcustomer- Q: W2 R. X! ^6 D$ l5 h1 x" p! w
customer-no
; S1 G/ a7 x# Z. n, `, ytrust-ok
- Q9 W- H3 _2 g  v1 ^7 d1 n4 Ytrade-record-one-len;;trade-record-one的长度8 d2 L8 f" o3 V8 x& X2 B
]
1 N0 H5 i- \. y7 Q
- K+ Y) {% V! V+ X: t) E& ~* k: R;;setup procedure4 f; Q! x1 q4 F0 b4 n9 q) d

0 t. C0 l3 |7 U0 Jto setup& y* S) U2 p) T. `9 X" H) I+ H* y$ q8 _

9 H% x9 v6 S( `ca

$ t* h/ w  K4 L) ~: X& l8 I# I
; I+ x& e0 C  `- b7 rinitialize-settings
0 @( Z6 i3 D7 e3 N6 E: m+ u! j

1 g4 \  H, X- c2 ycrt people [setup-turtles]

- j9 c7 n1 ~8 n+ {' w3 A, g+ {, U+ ?2 g7 @
reset-timer

+ l  i- h8 i* k& M% z( ]8 ]  m
4 `! W& r! k  }+ [poll-class
- h- X# E4 b$ m( W
0 L9 R$ Z( i+ ?$ X8 _8 R
setup-plots
% `9 [- L, b1 `7 r

. Y$ V# @! F5 b5 m: Jdo-plots
2 u9 ~  r8 L; T5 H  }% D% U
end6 H7 }9 }, `' p" ^6 t

  A& i1 M5 q& X' L/ O6 Z0 fto initialize-settings( K# E4 \- J" L

" O8 ]) ^8 l0 H* v! \set global-reputation-list []

8 Q& C3 i- f% I4 d* v% W  ^
4 S7 d; n: m- Y$ Q: M. H8 H- ?set credibility-list n-values people [0.5]
" G6 Z2 @9 T7 p8 h

  k- z: N' T- h' J3 V( x" _, bset honest-service 0

: K+ N, X% C- f' k; u0 i0 a
% x9 D9 i, l) V( D; Y- v1 S) rset unhonest-service 0
! x) ]" l6 j3 |7 O5 `# `
# z, |& c# f) _1 i" W1 T: i' y! [
set oscillation 0

7 h/ {, l& t+ v9 @5 F5 _- U; K1 j8 W5 T6 n, I/ m+ {* U
set rand-dynamic 0

( {6 ~5 h2 c, W& A" {8 tend+ @5 A5 z- ^* `% j

0 c% j; @5 f5 l- Sto setup-turtles ( N+ h/ }- `- x! |9 J0 G
set shape "person"; v- o# H$ [, ~
setxy random-xcor random-ycor
6 \! z! L: P4 m" X1 J6 G6 |set trade-record-one []
1 ^1 s- f' u4 ~3 J/ g4 u
' v& A8 a7 w) w+ M% G) S' Q
set trade-record-all n-values people [(list (? + 1) 0 0)]
; m1 \0 P* S: L- Q  \  U

+ ~8 f0 Z2 @3 [0 o% O9 a1 `set trade-record-current []4 C5 e' g$ G! d& _/ ~
set credibility-receive [], W" B3 Y7 \1 w" x+ t" w8 P
set local-reputation 0.50 l. |2 Q( k7 E6 ^  {
set neighbor-total 0
  }' S$ X/ l0 D% @1 H& mset trade-times-total 0
& A+ W: H2 H# b1 Y5 m) _1 j7 O. k! dset trade-money-total 0
% L/ B; s3 ^' L# b& T; @  Qset customer nobody) J1 U4 W$ v- q; l  J7 T9 Y) L
set credibility-all n-values people [creat-credibility]
) j+ |! [8 \" P6 X% H& ~& dset credibility n-values people [-1]
# C" U" ]1 S7 I" d; i, c- a9 Nget-color
5 Z& Q% g8 a# S! N" v! L  W: C

8 a; ^& L0 R- i. l4 Fend$ d$ |0 K( Z7 U' |1 t6 p4 H; H& r. ?4 I

9 o% Z- L0 V/ u2 F6 y! c5 V, vto-report creat-credibility
& S) h1 ^8 N* m9 l% x0 I( G( k( Xreport n-values people [0.5]
1 G9 T1 _4 j5 g7 p% a* K2 w8 Kend/ p) t* R1 o3 O

* y; Q6 B; ]/ }& ~$ Y. gto setup-plots; b- x* ^7 W5 c7 f6 e

3 p4 Z# R4 D; `7 Jset xmax 30

6 t  `8 p& T" n) P" g2 F$ [/ [; k6 }4 c1 Z4 R- V
set ymax 1.0
& R5 y: O( l7 D

  ]; f: L' N( ?$ D8 e. Nclear-all-plots

3 a& \( ^1 C% n- D! y! n7 M5 }2 \/ i) H0 \# w. c+ q) O
setup-plot1
4 z  a+ ~8 n, z5 @9 p- s! f
9 v! M, R' l; I7 ]$ a1 c  o, C( _
setup-plot2
# q( q  r3 s( q6 _8 L- N

& W+ t2 \' X0 H$ csetup-plot3
) y" z3 _& h5 {  _
end
& B9 O: p/ m; z9 ?
9 k0 I8 F: n; [% M;;run time procedures
7 x. i* z1 G1 Y- L( n- z* o( }/ t6 |' |' |/ W; w  d) O* E: M; E: f
to go
* `0 c- E# ^/ {) Z8 t$ Z* R* W" _1 d9 Z4 |2 U* C
ask turtles [do-business]
1 `. \) A3 h. J9 D# q0 j+ }/ O
end
2 `5 b7 [! }9 `4 ~' ]9 C
' K1 R: G* l8 X! T0 Ato do-business * U1 P1 Q0 }1 w4 B
  @  _5 V& J" x: G
2 G' ~+ u  U6 K/ V. h8 x3 `
rt random 360

3 q& ]6 p$ d: @2 j3 C# H) T- M/ t
0 y% R8 Y% }& P; z/ k# wfd 1

, _- A' Q: ^- V2 @1 E7 h8 h/ H" V+ h
ifelse(other turtles-here != nobody)[
/ d7 |9 ?. o8 V( G7 [5 Y0 ~$ r3 t! m: ^6 P( x
: C3 n) b4 ^& i% |. A
set customer one-of other turtles-here

8 b/ y% ~# _1 ]0 |" B% {9 K, g+ G
2 c$ F) Y; O1 \# b  r4 t9 j( q;; set [customer] of customer myself

! b6 I7 c  A) g# p: a" O; T
( {; h4 W) f% w0 mset [trade-record-one] of self item (([who] of customer) - 1)% u5 e5 u9 ?4 l. H* t7 e7 V
[trade-record-all]of self. h0 X7 ?; K' Q# U  k
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
: a) X1 E' G- m0 r

* ]$ o3 i$ Q! \" L) P8 \; ?set [trade-record-one] of customer item (([who] of self) - 1)% G9 Z1 S6 m& t& ~0 F3 K/ _
[trade-record-all]of customer

) U0 H) L, C2 n
* G/ x9 D* T% F1 _set [trade-record-one-len] of self length [trade-record-one] of self
4 E7 g! F! ]3 a

: r5 t( u( C0 s! j0 Bset trade-record-current( list (timer) (random money-upper-limit))

  n. @' O$ K3 F, ?! E! k8 u0 B$ q( E5 Q2 M4 F( x9 ]
ask self [do-trust]% S# x& j- E& ?1 i& S
;;
先求ij的信任度% Q% G/ R, Z1 B1 Q6 @2 |
1 l& y' u  c: b7 @7 ?( O9 |
if ([trust-ok] of self)
: n1 R3 Z7 z( p' ~" b: U7 n9 d( K9 g;;
根据ij的信任度来决定是否与j进行交易[
5 m3 c$ M  l" j! I, o5 B5 task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 a5 n9 y. l% D" O2 `! r& r
, x$ C4 b$ w" E+ k9 o' F* M
[
$ ^# _4 i* Y$ y! v( y( \4 ~
" Q# f1 G; S# x; W
do-trade

. Z5 c& C0 v8 Z% c' P
3 b8 h% ]3 S/ g; y% J/ \# `' B5 F  Hupdate-credibility-ijl

3 d+ e% y8 [6 j, w( a3 M; i) j9 J7 T8 K' w9 K( m
update-credibility-list
, X, X% u* E( p+ {
( k) |3 t. ~9 |, D8 G! u

! U7 [2 @- W0 T% R3 F& s! Q! kupdate-global-reputation-list
3 W# e& R5 a4 y

- U% m2 _& ~7 P; g# F# Npoll-class

: m9 q: i# V% F% T0 w- U
1 @7 I/ _7 p0 wget-color

$ Z# m2 N9 }+ f8 T. F; H) ]- R# O/ W% B8 D- G$ {9 ^1 ^: L; B
]]
3 }& N0 |' W; q! A, N5 }2 w- [; t! d$ t5 [8 C" R
;;
如果所得的信任度满足条件,则进行交易
* y1 q% Q1 d4 g$ n+ x& g: X
, Q) m" w5 t) X- \" [# r, W0 x9 P5 l3 ^[

; a7 k1 J7 p2 [6 X7 {5 z' b! c$ f, n( e+ A# U7 ^  b4 o
rt random 360
* H: E  ~4 X2 h- o8 D7 [! G
' |1 Y% ]% C! K% L3 }' i
fd 1

7 @6 e+ y  o- a. _* J
' \5 u  m# ^4 p6 B8 C% b# ^]

, L+ ^3 q9 k! _" e) A, }" F) k# m
end
' ]* C0 |# {8 v: R2 I

9 p! c( K1 F$ L  h- N3 |to do-trust 7 \2 d  `3 ^) [" R
set trust-ok False
! x3 J; h" l5 @: u, f
( t3 I$ G5 a0 X# [- n0 K/ i7 S  N
3 v5 R# k# b+ U
let max-trade-times 09 z; k* r+ U1 K
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! t4 J5 [# I7 E& w% x; u$ G
let max-trade-money 0
6 I8 S" C2 a% uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ {5 R3 t5 M+ P. G+ P. c0 `, w/ }
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* \8 `. }# K# T- a! F5 @( I: W

) `3 Q$ ]6 |& t

3 p  Z7 r: c, n- P! H* j. yget-global-proportion
, S, F7 y3 f" ~' v8 z& X, O- Dlet trust-value  Z" Q7 `0 C/ z3 {% ]4 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)

' M, W* V* c. @8 h% Uif(trust-value > trade-trust-value)8 ^; \& h3 r. D, [( e6 d( P+ |
[set trust-ok true]1 n" c) n/ }2 k1 r7 j
end
9 P* A/ f; `" Z3 w/ W# n8 r* B; D" m7 _9 w
to get-global-proportion9 F* J' f- l* c/ }, S/ M
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 Y2 ~7 F* r5 X& W) x
[set global-proportion 0]* P# s4 e0 q. c$ Z6 [% x
[let i 0, }: ]3 V& b- x  y6 e
let sum-money 0
* \6 {6 }" Q* [while[ i < people]
* B# g- z* V6 o9 h0 z6 L! S[) u8 A- q( P% k6 D9 {4 C: y, N
if( length (item i; W2 o8 s8 S6 u* @9 \
[trade-record-all] of customer) > 3 )

1 C+ S# n2 r  @+ _# S% d[
. f& P* t  b* w9 l! k- sset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- r" o9 ?- J( k]/ ], o' d9 [; ~
]7 f' `9 ]1 y2 h" U% q7 q$ `
let j 07 w7 q, I: x/ ^6 f1 p9 f
let note 0$ E$ j5 c0 C2 N; B9 s8 z* `+ T
while[ j < people]
, J7 \! _$ ~+ z  ~! m' g: t* }[
& m" i6 F* ]$ m" l5 Z# mif( length (item i
3 y8 E5 D% S' M4 z& P[trade-record-all] of customer) > 3 )
, X2 t$ d, t3 L. `
[
0 Q& t1 Q" r3 N- P! w$ p: Jifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 D5 c: ?! b7 c8 P" e[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! M3 U% M# f( r* M5 S0 h, Q# _
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ H# {5 E0 L/ R' v  E3 o. U5 @]
/ A6 ], H" K, Q3 }( Z3 c]
! M. U& v9 A1 j  m. L* Yset global-proportion note3 q6 p4 T% t% ?% l5 h  y7 {0 K
]
7 v9 |: b! k2 J( _- lend
! Z/ j- s6 r! C! L) d7 X7 ?: B' u, Y% x+ C0 k
to do-trade
* ~) Z) y- n- M8 z;;
这个过程实际上是给双方作出评价的过程
$ T! E+ `" S6 C& dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) J% ^0 v1 N: E2 |3 xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. a! r% O' }) }# sset trade-record-current lput(timer) trade-record-current
8 z( l+ N) U! R' b6 Y;;
评价时间$ F8 W# R: x& J- F5 `3 e8 H
ask myself [# _( N; G5 D4 y6 ^& q) T
update-local-reputation$ o/ X! s5 m! o/ z3 W
set trade-record-current lput([local-reputation] of myself) trade-record-current
! ?1 r- m, Q0 c# Y/ ?7 z]4 l- E  ]' Q3 p, ], j. j: v# u
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; |, O/ F8 A; H1 O; d;;
将此次交易的记录加入到trade-record-one
2 N/ a; Q' s3 M2 N. aset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 Y- H) I$ L( tlet note (item 2 trade-record-current )
, r$ v/ ]' c: D9 `* U: s: `$ Tset trade-record-current, r0 e" N0 e* c  B- V: v
(replace-item 2 trade-record-current (item 3 trade-record-current))

9 }- e% c8 O+ L* x. J* z% }set trade-record-current/ t! j9 s) }1 |$ ^5 K! _. |( W
(replace-item 3 trade-record-current note); L, K( q# Y' G- I

9 c0 F1 G' _$ z- p7 m; t4 g* ~
9 i7 Y* m  N& {9 R' V( e0 _5 ~& d
ask customer [
9 Y4 q9 r( ^7 j4 @- supdate-local-reputation
- g8 _$ B( a- W9 A7 Y9 t9 ]set trade-record-current
) c/ v, H& A$ w- u, Q' o0 K(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 i& H9 p* B# R5 l5 ]
]
" P6 ], n9 u* {. w0 z0 H( A  I/ {$ n6 y% {) x

  {7 S; K; m3 `# k& ^4 {9 {. j  F: Vset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ C9 N5 j' [# S7 A. e

* E' T- `( K- Q$ b3 mset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' Q% k* ^  {$ L/ R+ t6 |# s% j# n
;;
将此次交易的记录加入到customertrade-record-all
! {3 s/ W; y3 G+ cend
% {" E4 d! ^3 E, A4 a' F' X5 a  O4 o" Y( u: e
to update-local-reputation4 P4 V1 E6 \/ _
set [trade-record-one-len] of myself length [trade-record-one] of myself; K1 e% n1 K0 l& ~+ h+ l0 t
) [2 B. ~2 z+ e. }$ o

. K' Y: J, ]3 M; O( Y! a8 {% L;;if [trade-record-one-len] of myself > 3

9 I) o' a) o( f) k: N: N  @update-neighbor-total# A3 |8 W- Z3 A+ Q/ Y# a
;;
更新邻居节点的数目,在此进行
8 u; Y: l7 b! blet i 36 a  h  J/ X3 y  W  d! P  a
let sum-time 0
- i3 v* h/ ^: Q8 N0 B' e9 Ewhile[i < [trade-record-one-len] of myself]
- U; N* q/ Q# \5 i4 F" i/ \6 Y' [, U- q[' H7 t* \5 o9 U+ B" _7 Y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 j8 L& i( M5 f
set i% z; |; d; J  P4 K: s3 c
( i + 1)
, W# R; D5 R7 P/ }) Q  z
]6 e$ i0 l  B2 M" g9 N! i# K' h
let j 3
6 [" @  K7 i9 |2 ulet sum-money 0- S3 J' h$ ^/ J" [. q. |" _) r
while[j < [trade-record-one-len] of myself]0 A5 l' }& Q& d& d: M/ u
[
% B1 p/ M  k  y# v' Y6 U0 J8 Iset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
# D% f; R5 O- y; x; t" H6 oset j
( @- K, M$ W& h$ ^# O' d, C# o! Z; J' z( j + 1)

0 N7 c( V2 S* N5 |; N  f( j, e; z]2 x, O! [8 r6 G$ e. g( n+ B
let k 3
: H# w% K6 s3 ~let power 0" K/ i  }3 |* H3 x
let local 0
( f( A0 V7 O6 U" rwhile [k <[trade-record-one-len] of myself]
* M4 N7 @$ s7 c- e[
: e# ]* R, p0 o; W# pset 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)
% f2 y' j* J1 [1 I9 P( Lset k (k + 1)* e  Y6 Z( ]. p* ]- k: u% m; z; K2 }3 Q
]0 h* A1 `- b. Z
set [local-reputation] of myself (local)
! ?! g( H6 J; t% Rend4 S1 H0 G4 d; P4 N4 C& Z3 S# o. s
6 ]7 A) K. g: K
to update-neighbor-total
, G: ^5 ~! \7 h
; i4 `- \. i) o2 l" Iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* g) K9 N7 H; O
7 i$ \, l. E& k( r# g
$ N7 A8 u, m2 l* z8 f6 T( G
end9 q. C* B6 X0 e5 j% g  ?
: x+ X! H5 j# a: ^" E2 U% h  u
to update-credibility-ijl
7 b# c) m6 p0 M* j9 {) {' W" k: n  h- @# q3 Y; M
;;
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。
( Z8 {2 R/ K! J! ilet l 01 Y, n  o+ `% j
while[ l < people ]" H( G' Z- Y% W, x8 i: e9 w9 R
;;
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) t2 h, c0 D% H/ R: ?3 C3 k
[
5 D/ {( e) L! K) z1 q7 Q1 Hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)& }2 t/ q* c3 J: M5 Z1 k$ {: S* O
if (trade-record-one-j-l-len > 3)
6 U* s% y% g/ R3 V: A; L5 Q1 Q[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
0 @( c3 j- U' Z- {2 w( z7 ]& Elet i 3
- ?7 Q+ N8 `2 f- ], K+ b0 Ulet sum-time 0$ o; c# u, ^& E  R2 J; o, f
while[i < trade-record-one-len]
% j" i6 `! l1 _8 d3 X7 K/ m[
* X" i: @8 q: f) a4 Sset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
  A  T0 u$ w1 E7 M$ Q# \9 bset i3 w2 y( S7 r" {7 V, L! a
( i + 1)

. k& ^6 P% v3 r* Q8 s$ W$ P]
" p# P( J, B  o' ilet credibility-i-j-l 03 k0 S' X' ?" w
;;i
评价(jjl的评价)* n( ?( V3 A: N3 I  n) N) P! ~
let j 3
6 L& ]+ |4 D! X7 j$ ilet k 4
7 H5 V5 q: |/ K# ?! Twhile[j < trade-record-one-len]
7 H( p* K/ G* o1 }: `[3 ]% Z8 ]8 M- B  b& B- @) B
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
4 g+ Q- m8 O* _7 qset 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)& K/ L4 G7 D; J8 F1 p0 d
set j) J9 t+ W+ X( v# _1 _
( j + 1)

1 e5 i0 M1 d3 x/ t. }% }]2 q* Y: S. J: ?- Z. P( R0 I
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 ))* U  T& s7 Q/ O& r8 T( n" q  w
: }, J+ D  m7 N. n

8 o9 l$ v& l% D, mlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 o6 E, w/ u) Y- h& b  B6 n;;
及时更新il的评价质量的评价" p0 J2 b* l9 g. Q, f# I* g3 }1 Q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' e% }- V/ C& B' ?0 |
set l (l + 1)
( L( z7 T/ x: r+ O. M. I6 s% U0 c]
6 R8 U2 f/ u1 s. M% p) Xend
6 W! W3 X% r0 v. b& r
& X& z/ Z! l+ a7 G0 B7 @: Pto update-credibility-list7 L; Z' [6 A+ v' x; [+ N' G+ ^9 a$ p& M8 g
let i 0
4 g3 I+ k- }3 h" |, \) Twhile[i < people]& z9 }. @0 J# u1 p- O
[
5 X/ L) Y) |5 g, t* rlet j 0* M6 Q: V* _9 s/ K
let note 0
0 H3 i- q& o/ k  zlet k 0* Z9 F7 k% a+ N
;;
计作出过评价的邻居节点的数目3 e' d, I" C, Y' [+ M0 F& P
while[j < people]
; H# o9 L9 _3 }[/ Q1 L7 @8 q' ]2 n2 A+ g
if (item j( [credibility] of turtle (i + 1)) != -1)
9 n5 l- x" z5 t* _- N;;
判断是否给本turtle的评价质量做出过评价的节点
* x0 A# N% {" y" j, _[set note (note + item j ([credibility]of turtle (i + 1)))& ~  y# ?+ m+ `7 O6 }, p- |
;;*(exp (-(people - 2)))/(people - 2))]
  g8 g- u9 p8 K, \; C
set k (k + 1); c& O* {2 m! Q8 Y$ d( F1 S) R* {
]
  ~" D7 {$ y* F' g0 j# M( cset j (j + 1)3 g, a0 E- k" e9 Q" ?( Y
]
$ s1 m$ M) i- ~" dset note (note *(exp (- (1 / k)))/ k)
5 F1 m5 V; I* Mset credibility-list (replace-item i credibility-list note)
$ t) G" z! |  ^* k9 `" L6 B+ H: sset i (i + 1), c0 v# \9 |1 }
], x4 e" q3 n9 ^, K5 y/ T
end: Y' ?$ K3 B3 w, _) y6 I& j. [

$ I" [4 ?# M: C  fto update-global-reputation-list
  F8 v" f0 F" r2 t3 B( u8 M& S& M/ Vlet j 0% t) M* T7 a+ _5 V6 o
while[j < people]. g) M' r4 a. k. f" K( K1 D
[& I; ^8 @9 [6 X8 f
let new 0
. W/ t1 M1 j; o3 h( ~& f;;
暂存新的一个全局声誉: e; E  d& j8 J( Z$ ?
let i 0
2 e5 _1 @+ @8 [( ilet sum-money 0( P( h* U9 D) e9 l- L/ O" R
let credibility-money 0
2 x3 s; z/ u; _: S) ~while [i < people]* f! Y3 d1 f  n7 f; Y% n! q( b1 v. n6 H
[
* _  E- m* d. @: B6 t9 pset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% v7 e# T$ V) @+ e1 C+ Oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 f" V$ ?8 l* K3 w5 Zset i (i + 1)8 d# }7 }9 i- f. j
]# P9 ^* M9 x# O5 i8 B! r  g( N
let k 0
% Z$ W! `% z8 `! F8 alet new1 08 i% @' U5 B: U0 X3 l0 E$ g
while [k < people]7 H3 `! \5 t6 @! a8 y: K
[! G0 m# D. N4 r4 ]/ m8 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)/ m- ?7 V  Q3 d& }
set k (k + 1)6 {( S- Z6 g- e# z( ^# h8 [9 L2 x
], D* v4 W* R3 E4 \) @) s
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
3 Q! X9 c1 N& ]& `set global-reputation-list (replace-item j global-reputation-list new)
- G- V. u' ?; Q8 m" A+ Y! i, mset j (j + 1)
+ j& h3 u+ ?1 ^+ @3 C]
* h" R* d, n' x+ Qend3 x; t& r" H$ |+ {- K
' G4 Q! M+ R1 u, c7 g* C6 M
) T, i$ a7 `% k+ O
/ {. j' O; R' P' W0 [4 H6 P" I0 W
to get-color( w) ^4 j) T" X8 d! B- U

" {8 u) ?5 ]' ~  Sset color blue

/ F1 h9 _0 [9 B8 ^% n7 Lend9 S8 }$ e8 J& j# _+ j
9 I2 J  I$ `/ A8 y% c  O" O4 ~
to poll-class; ~; F, \: e% R
end
9 n$ D/ E4 y' z0 Q, q4 r$ L) M
) f) N7 i$ W' Mto setup-plot1/ d) P, B, Y; p1 H4 @
" z# V0 ~( z7 i5 `! z
set-current-plot "Trends-of-Local-reputation"

) g9 i" \- M  m6 V+ E
) l" \% H$ i; f: d( r$ Rset-plot-x-range 0 xmax

3 _2 y2 {; i# g  q) T6 D$ y+ P6 L5 S( ^- o" Z- f. N. N- W# [$ _4 c
set-plot-y-range 0.0 ymax

0 ~- T7 d5 l+ n9 tend
* `: V# i! N, Q5 b0 B; G
: G- C# f, o) J7 n" oto setup-plot2) L' n! I# N8 l7 I& x
: B& s) @# E4 W7 K0 h1 D
set-current-plot "Trends-of-global-reputation"

9 ^2 D" ]6 P, O
. o  D8 b' r' U- x' Fset-plot-x-range 0 xmax
3 B, g0 P% r, [* n# v: U$ {. i

4 b3 R; M! h0 ]( T  M+ Rset-plot-y-range 0.0 ymax

4 H- |) G  I, fend
9 ?% G; q) P2 i5 O8 l
: z& E, g) k% b7 y2 [to setup-plot3+ P5 N6 f2 k( }: h

8 m% q0 j* @9 L1 h% ~% n2 P" Sset-current-plot "Trends-of-credibility"

- z( ]/ u% ^% E; Q* M8 J+ m8 t3 I3 L  E9 ?+ S
set-plot-x-range 0 xmax

9 b' J: T8 S/ Y; y7 [/ `" `' y4 b& R  j: Z, o. A3 b3 U9 B
set-plot-y-range 0.0 ymax
( }1 Q0 O% r& I! W5 L
end8 {8 a: ~# U9 W4 d" F

5 W* K5 l& d6 F/ v. _$ z# pto do-plots
  Y8 b" }$ v2 |8 `# w1 b* Eset-current-plot "Trends-of-Local-reputation"
+ k% m( ]% V3 I" l+ aset-current-plot-pen "Honest service"$ l5 ~. ~9 c0 Q5 g9 t" f6 P
end
; a7 j3 Z: Z: R/ r5 j* U, k. p9 ]$ v+ x% F/ d! U9 }
[ 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.5 p$ t( _% L, E4 t
* n) x9 y) J) V6 M. l9 n
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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