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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:$ Z: ^/ d; E2 S) \# Q/ ~4 n
to do-business - D2 n3 h' c' l( t3 F6 _
rt random 360
6 C8 P6 ]; d7 E; J6 k0 A5 ]/ ` fd 1
3 [, t4 T& _' S6 v2 ?* ?; [& T5 l0 _ ifelse(other turtles-here != nobody)[2 ]8 I, N$ Q% ], ?& U0 y
   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.
$ N! Z" P( R% V$ N! O   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 U" O# v/ l* I3 q* ^8 {, D   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, J, `5 r& E! z" @+ ?( N$ _   set [trade-record-one-len] of self length [trade-record-one] of self4 s8 y$ m! L/ R' L/ p/ @7 b
   set trade-record-current( list (timer) (random money-upper-limit))3 u- u& S& H0 ^2 k$ ]
0 X* y- P2 e% q
问题的提示如下:
0 B6 Q2 c: d; A
- F: M  M2 y8 E, m) \- b& O7 N* jerror while turtle 50 running OF in procedure DO-BUSINESS# X9 \' y) p" `% `( M
  called by procedure GO
% G1 H3 d: K) s' w2 BOF expected input to be a turtle agentset or turtle but got NOBODY instead.
' ^3 m1 z$ u+ r9 E
(halted running of go)
: A6 C4 Y4 y! h* w& n+ o% W; I! J) Z- E
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~~. b4 C6 ]/ ?  D- @7 E+ H
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 \/ |- ]0 w& t& J- T0 p; ]. i: o
globals[
8 B& z3 @; A! l. s: G7 Qxmax
* H1 d, f% E* b' H& ^. }ymax
7 m/ R: f( m* Y- O/ k. ~global-reputation-list
. P/ U3 M) [3 [: q# g# \. I0 p) R' Q! `! |8 k/ L' [
;;
每一个turtle的全局声誉都存在此LIST
  J% p- g7 V! Pcredibility-list) P: ~, j& t. l8 x- z
;;
每一个turtle的评价可信度
, g* g3 H+ W6 @, a, Bhonest-service
) D! n6 j. ]2 H* N% {, Funhonest-service4 X4 G/ X% |0 q& l2 {; e
oscillation6 @) Q# X% u) V0 Z4 b. \$ M8 K* n
rand-dynamic- g9 C7 E0 ]1 x# l/ K
]. K9 T4 C! h  b' a) B

6 e( p, E8 B, y  ^- {, I* b) Jturtles-own[& t$ Y1 X7 k& B4 t3 N9 q
trade-record-all
! A. n) S2 H  e5 D, j4 q;;a list of lists,
trade-record-one组成
/ d- y" ]2 B! T* N* ~2 m4 ztrade-record-one
& ^1 E2 Q$ I" F* K;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- j4 I/ O$ d' |  H- w
- K! u8 o5 S2 ?2 V) m! f
;;[
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]]
$ ~( Q; Y4 Q5 itrade-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]0 q; e6 W* s) g0 d% g
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
7 m5 T+ a8 l7 }* U$ Yneighbor-total
" Z0 l$ F! l/ z; f# K;;
记录该turtle的邻居节点的数目0 n3 L5 [0 N# E
trade-time
, R/ s1 T0 ^6 ?0 J& a" S6 {' B! l;;
当前发生交易的turtle的交易时间
; G8 Z& F1 j# p' iappraise-give
6 N9 g, z1 b8 W# p/ e7 P- z$ u;;
当前发生交易时给出的评价, f  |0 x  X# L  @, ]6 V9 s5 ~
appraise-receive
: v: j1 t! h0 n3 _;;
当前发生交易时收到的评价
- X% |5 c. Z$ Oappraise-time
% B1 \2 t/ {4 [3 p) M4 W( ]2 k;;
当前发生交易时的评价时间
1 I8 s/ a, ]: P1 g9 i' `local-reputation-now;;此次交易后相对于对方turtle的局部声誉- R% k) Z* k) Y+ G  \' Z% t
trade-times-total
( L2 \2 ?7 a7 M8 F% G;;
与当前turtle的交易总次数
, [3 P  n9 Q$ g$ S! g) j% ~6 gtrade-money-total, W4 H7 Y. ]$ G: e% Q! o8 V3 o
;;
与当前turtle的交易总金额7 ]; p; w# k/ C1 Y
local-reputation3 e' U) L& \( c. r3 c
global-reputation
2 D7 h1 _6 z2 ?: Q% V6 Lcredibility
; n/ Y3 w0 o$ \9 p2 Z% v. C% ];;
评价可信度,每次交易后都需要更新3 D0 u( d+ P/ A: n' J
credibility-all; i8 N' y; q+ u* u# r0 u8 w9 V# Z
;;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4 U7 J2 t+ ]$ a5 n7 J; R" W5 U7 f
! Y3 g9 @. {6 l' u- J1 l* R
;;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; @0 k0 [# S( }
credibility-one; d+ H( G2 ^- I/ L
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
, l/ C  y1 b/ M/ [5 l  @- `global-proportion8 Q) F$ u6 l7 a, t
customer
) ?0 J9 e: A- W7 O9 s" A' kcustomer-no/ z7 B4 T1 Q/ e6 S- Q3 l* X) `  f7 a
trust-ok
# [: ^2 j3 I; G* `1 Dtrade-record-one-len;;trade-record-one的长度" W7 W5 l  l! J4 E7 K2 W, z. b
]
; d5 g3 Q# R  I% a
' W: v; m% }4 O;;setup procedure2 A4 y7 |4 I: r2 |, @' A/ K  M9 \
2 N  ?, [, N3 W
to setup
5 z  N, g0 P$ a+ D& d# P5 A( ~/ J
  Q" Y0 G, m# P: A; K+ Fca

% r# X/ m4 P! V( i/ ^4 M& s3 ]) ~6 O" [: P
initialize-settings

; j, A& ~* A: Q- H# O$ \' a0 s8 _
crt people [setup-turtles]

  T  s+ W9 a) O" I: r5 e- y+ B
5 \8 ]( l% _# N# _1 h+ ]reset-timer
) j  h3 y6 H% Q$ j3 F. U8 R1 @8 X6 K

$ C4 v. F, Y* `8 Bpoll-class
) e7 r( R6 b1 o3 n- a

: U' t3 Y% {& |/ a6 |) t+ vsetup-plots
( b% X' {+ [& y
! x" R5 B, X. c7 B  z0 t6 r
do-plots
# Q$ M3 R! P5 v2 G
end
: ?7 ~6 V+ z9 S, `! s3 T# U; X/ e8 l) T2 \. }
to initialize-settings7 z: e& u4 L. ?- m1 }  F- f

2 V9 S3 z' n- }  K6 O, h5 Gset global-reputation-list []
* p8 k, _$ |) Q3 o( l) ^

. e4 U/ O# y; q) q6 V+ g; d( e" D- \set credibility-list n-values people [0.5]

) W: K- I% V3 t# U0 r/ B
$ T& m* s2 [* I+ P, K5 `! ~set honest-service 0
- ]7 ?5 \+ s) t8 b

" L& S" ~4 Q; K$ Gset unhonest-service 0

3 a6 W5 J" b5 B  ]+ x: T- I4 L8 f# c! J+ }2 b* g: ^! D
set oscillation 0

9 F2 r( M7 v# I" \1 Q8 v% A  I9 S, n3 S; W! l. _. C4 h' `
set rand-dynamic 0
. `4 j6 W8 t2 u4 Y' a
end: p; I3 M" ]6 C

5 U! v0 u, I! x7 j* V4 T3 Qto setup-turtles 4 [$ F8 e0 o6 O* [3 J; ^
set shape "person"
; t3 h: e/ ]) k2 `setxy random-xcor random-ycor6 J) O7 s$ L, D8 T) K
set trade-record-one []
- ^; e0 J) y& a& I3 p
0 t. c8 [4 g. B! G# e7 U
set trade-record-all n-values people [(list (? + 1) 0 0)]
2 U4 ]) t* I0 z6 r% P: N

7 W+ _5 B3 G" q0 z: x7 Fset trade-record-current []
% ^) s3 z  F# S0 bset credibility-receive []5 T' K! ?- \% t6 a! _, i
set local-reputation 0.5
0 J0 M8 n8 g, a2 q2 ~, bset neighbor-total 0
* @% `& y2 b' p1 i$ oset trade-times-total 00 L0 f& \2 A3 Q3 [3 ]
set trade-money-total 0
+ P6 V# n( s/ Y9 J4 Oset customer nobody, l) a5 a5 F$ y9 Q7 G
set credibility-all n-values people [creat-credibility]  B: p- X9 h: |' W  w! t" @* D7 ?/ H
set credibility n-values people [-1]
5 p  [( H, Q+ S" {; iget-color8 }% C# r1 @3 n! k( U+ [4 w

0 u' e5 _" P$ g  T' K! uend
# w8 t1 l( J6 F6 ~- P% f8 x4 |& e( h. |+ T! g+ j
to-report creat-credibility
" F7 W% X" v5 i% w  Zreport n-values people [0.5]9 V2 p- \+ z: Y
end/ g1 D8 {$ `6 f4 J5 m
! `+ v$ V; X, E' d5 W( H. s
to setup-plots6 N7 {8 v! @/ A/ g+ K
, Z5 x0 `+ \. e$ A3 m0 C
set xmax 30
) C8 q  _" U* H6 W1 x# Y
8 Q, U3 k7 C) T; d& _
set ymax 1.0

, c! d1 `9 q- n
5 u1 ?+ E) _& f6 s* K( v6 A- ^clear-all-plots
8 w0 C9 B1 E8 U3 k& p
' u  b/ u5 Q, A) w- ^
setup-plot1

1 I6 O3 t( j8 h! M( V. T! S1 E# @' X
setup-plot2
+ O, p) Y" Z9 ~. |/ g
5 j6 `' G. ?) F3 [. f
setup-plot3
# a  v) q0 X8 K, ]  D; l+ O  P" t: O
end2 n2 R) b% J# e+ G) ~
; W* A0 \& k/ N8 l7 }& @
;;run time procedures5 ~  f5 `: S- @- }2 g% ?4 _" s
3 N2 ?# ?% o9 _0 }. G4 Y3 q" \2 t
to go  H& E. ]  n; M' a+ t2 G# u' S
; U) }, C4 ?% C! h( ^
ask turtles [do-business]
8 d# Z+ _8 q: y4 ~4 P# b
end: L0 ~* p+ q' [/ W7 w
  D+ q# \+ W( Y8 p4 K/ O0 }
to do-business $ A+ w6 W' x+ @2 K
/ }9 H7 }. o$ R9 j

/ U6 ^( `0 e& A6 y( {rt random 360

5 Z8 |$ _7 _+ I* h$ g- ]& P  e7 ~4 L) {+ `
fd 1
5 `; v' f7 \% }& {  k

0 r7 ], @) I* W' u6 Yifelse(other turtles-here != nobody)[

2 Y* x/ r+ p) f+ i  h! t
0 k  q) R  y( F* S* B: ^+ F& y6 uset customer one-of other turtles-here

4 x) q6 h/ I2 l
, H) f& x5 V7 c, H# W( P* B;; set [customer] of customer myself

  I. X. m! Y+ i6 I! @5 ~! P* Y% E4 }* k
set [trade-record-one] of self item (([who] of customer) - 1)
( S; J3 {' P/ t0 U" c[trade-record-all]of self8 K, d  K' u& I% H7 {3 b# p1 Y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% g  E' t% T2 i5 v+ w

' f& ]0 D  C. w: ?0 L9 mset [trade-record-one] of customer item (([who] of self) - 1)- _2 l, l/ \3 R- d4 F& z, N
[trade-record-all]of customer

; ^8 e. i$ l- D+ w
$ y% y  T/ |# F6 `& f5 S& Cset [trade-record-one-len] of self length [trade-record-one] of self
" P/ t: X# k4 J+ Q

# X3 a' x& x) t) W- z8 Z& _set trade-record-current( list (timer) (random money-upper-limit))

) F* m$ z# J( `0 q" j1 q" ?  n: o/ E  U' ^. d# m1 Q: V# N
ask self [do-trust]' s9 E  }# g4 }4 n; v
;;
先求ij的信任度; M3 N1 t: m2 _+ b- E7 }

, m3 V3 y9 ]) y0 G; ]. i) j5 ?if ([trust-ok] of self)
( K: s% t* M( f: {5 D;;
根据ij的信任度来决定是否与j进行交易[) c9 n( B+ n7 c# Y( Q& {
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
4 W# o) _+ h" X, h
* b9 B4 y# |2 n3 f[

- C6 {6 ~" p) u+ E/ Y/ c% Q, O+ D
( `9 W5 G, _- N3 tdo-trade

2 [4 b+ i' Q" N) ]3 {$ e* n0 e9 k  r6 u1 F; y
update-credibility-ijl
& E1 E! H5 M  h% i+ F
6 c- a" j8 s& }3 `$ K* [4 P1 {
update-credibility-list
! J& C) d9 l8 Q& Q% {  y* E
" s% l& C' m& b# H- i/ i
( d1 g$ z% s: S1 G# w7 g) ?& [
update-global-reputation-list
: V9 C# p: b( b* r) Q
( @* y4 d) j' g, V
poll-class
8 ^4 G4 G# c( L, n* K0 C

* Y3 M- `& j" {get-color
* R! _' b* }* h7 i4 I  ^2 g

/ f5 Y- I6 q' r/ x+ S! K]]' ~* w& o; S' `9 Y  l) A
1 o1 O" |% t* ]- @  ~
;;
如果所得的信任度满足条件,则进行交易
" s$ ^/ S( y- R# c" d6 k9 x
- y2 L' }7 P3 r- q7 v$ B[
: e; u4 D4 S, J0 n

' |% C; d) ]: A& krt random 360
5 |5 U1 g8 b6 O( W* A' j1 J  Z  R( @
) j6 h# W2 D5 T( [5 r( |) Y( e6 y
fd 1
" }* }9 W# g* j. ?+ S. L1 \: g" x

' s# _" W& f5 L( |/ j]

6 n) ^8 v1 Z( X0 a9 |5 I; |6 S8 ^) @  K3 ^# w: N* I- r4 m
end

8 m( T% p& O; S6 l8 V. R- }- N$ D, \* F: N* l" j
to do-trust
& W2 S% \% i: S1 o/ p( c8 @% wset trust-ok False) C  L  C  C2 p* ~% l

: z+ ^! {8 k6 N7 |; ^3 ]$ P: G
2 ]% b! ]) ?9 y3 F2 E0 h/ a7 `
let max-trade-times 03 g1 r! d% N% k& I- n8 |& H
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 a+ k7 K9 _- I- k
let max-trade-money 0
, g& j: \1 {% D8 h8 T9 Jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, h/ X1 C7 {; I6 U5 g) y- Hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
8 Z6 I1 a! t5 K+ E! }, d7 V& Q0 h4 n
6 J( Z2 K: `, _6 c
get-global-proportion
* L- Z) Z  j, o$ a  Qlet trust-value( }/ M1 H2 h; _/ w" C0 O$ y; D+ 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)
  ]" n) ~$ p  v9 Y0 T2 j" o  U& Q
if(trust-value > trade-trust-value)! l  ^& N1 {5 X" m
[set trust-ok true]5 N( b$ y% e8 i8 p( f
end
1 w: j" M* ?6 N" @) W: l* _1 O. G" v$ q% p; a! m
to get-global-proportion
* w/ X1 U% e# ~2 ]% {ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 A  z6 \% Z- h1 t/ Y
[set global-proportion 0]% ]( v  s+ @/ f
[let i 0
) i3 W7 N6 c: U9 l# x, r. v; blet sum-money 0
8 M/ R4 P4 w2 q! i7 a5 Y+ rwhile[ i < people]
6 y: f+ i0 B8 e2 f" \[
. _# m' w1 A0 F; p# e3 Wif( length (item i
' v9 j+ O' M, r; C6 I[trade-record-all] of customer) > 3 )
2 Q& y0 V( \- W5 A
[' L8 ~" J& A/ H. ~1 p, `
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  ^& w' W9 Q1 w* w# B]
' Q' t( q! N  N9 Q+ {7 x4 R]3 {' D2 C: b6 r) x6 U% t: K% u) j
let j 0
5 ?: \0 I) u2 Y; n& c. olet note 0- x5 E2 \% O+ R- i& l4 U3 e
while[ j < people]
9 T' H3 ?. @* C, o1 G[* f% Y. G4 J6 u5 u9 U
if( length (item i. i* y1 n- Y; u; k7 D% a/ V
[trade-record-all] of customer) > 3 )
4 C6 \3 B  k% Q: v* T
[
7 p( e4 ^& h; Q9 E$ z# ~ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" h' [, p9 F& a" U: j+ }+ _% @[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# U6 _! y& T2 y9 Q# y: |[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
9 Y7 v" x% {1 w+ j]" Z6 Q2 {4 Y0 t
]
& U' @) |" {- ?, F1 X4 dset global-proportion note7 r7 [4 v' m- q
]6 }! y( |0 y7 I3 l& o$ l
end/ d6 q" t1 X: d0 T8 x

, s# s' e7 O% |9 i" z" @to do-trade
2 }$ e* r* d( N- `' h3 ];;
这个过程实际上是给双方作出评价的过程
7 w* e0 V0 l% Q' k. bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
7 E8 v1 \# Y+ c7 C7 @8 @. W" U0 sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 _5 e0 l' r* b$ P$ b+ ?% A) S+ s* Cset trade-record-current lput(timer) trade-record-current
9 c; o$ n$ ~4 y; u. m8 _  W;;
评价时间
. r( L( H1 J2 wask myself [
* Z; s+ q6 ^+ t. Y5 F2 m/ \( k5 A) H7 Xupdate-local-reputation
1 A6 m' J+ a) S$ D" @set trade-record-current lput([local-reputation] of myself) trade-record-current' k3 x' n7 ]( E) e8 F3 B) X
]
! R; R( O6 U! N( ~set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself' H4 H% d9 c3 A7 ?  y, p  ~1 i5 s8 T0 V
;;
将此次交易的记录加入到trade-record-one# F+ x8 [7 e$ q) Y. Q
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). X9 F0 C5 ^9 Z5 a1 n2 w* Z. M
let note (item 2 trade-record-current )
  e* {) o' |8 B- X$ cset trade-record-current
. T8 C" N4 m# u8 m+ N(replace-item 2 trade-record-current (item 3 trade-record-current))

) y1 y1 {. U/ I' G- l/ h2 ?% t) Kset trade-record-current3 ^; B- R0 E) V$ L1 u4 `  W$ M. }
(replace-item 3 trade-record-current note)
: J9 \9 }# v' x6 W3 W, |+ D7 ~
2 E: s8 J3 d/ f! w7 c: h" C! W

- g+ [% k- g9 [6 b6 r6 _( [5 e: Xask customer [2 ?2 {  a" J' y) V3 Q) C! s
update-local-reputation
2 v$ R/ p3 V2 k, J3 Z) xset trade-record-current! x% Y1 N' T# u3 {8 `, K
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
2 @) E6 A/ q  K! v: i' M" Z9 M
]
. j9 k9 ]4 C0 ~% y
! e. X: p! D( P: `/ m+ ^8 r+ t1 L
9 a( P7 b+ S$ O! u
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! @. z6 L; I1 k0 y/ y

- X1 P: ]- o+ q" ~9 w( ?set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* e8 g6 Q* K4 g/ k7 |" ?% g;;
将此次交易的记录加入到customertrade-record-all. c* e  D* z1 V) p6 k
end3 t0 K0 O  N( C

5 A/ ?' U# r1 j9 T' n' s1 ^to update-local-reputation
  ?) P; y2 j+ R: w' _set [trade-record-one-len] of myself length [trade-record-one] of myself9 }- O1 E$ b, n( y  U, O$ X
7 |: q! _0 \+ [) K2 ~
. E$ J  L; ^# x9 q$ U. `/ T
;;if [trade-record-one-len] of myself > 3

; s. t" \6 _: `4 i+ u7 y( Kupdate-neighbor-total) ^9 g/ ~6 w" I  D! l* E
;;
更新邻居节点的数目,在此进行2 z" m( q) Y; d7 z7 n( |9 ]' W
let i 33 c+ @7 f) H4 k( D+ }  W) @
let sum-time 0
$ @2 n5 }! X' d" L$ owhile[i < [trade-record-one-len] of myself]" u) ^# x& a1 z% [( [( b
[5 G4 _! F, k7 e; Y( S
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: L) F  w$ B9 S3 k% Z) w6 F% pset i  j9 Z( a3 `6 z5 ~: m' ~6 d8 H
( i + 1)

( S" ^. t# t# e: ]/ F" a]) p' _6 u5 U% m: `( J  o/ T
let j 3
. p) j8 G9 J* j: ^6 Xlet sum-money 0
9 R* _2 G5 P* fwhile[j < [trade-record-one-len] of myself]) C- w3 p5 e  o" l' e/ j5 p* b
[
* c6 W9 g) w% a0 R; Kset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
3 o6 f' o# r# T6 ~& i; _8 Zset j( o  `6 N( \! R1 O- d* ]7 n% F* b
( j + 1)

) I' |# f( K3 E; w& u]
/ `& ?0 N  c( Elet k 3; b+ w( y, c& R2 l! O" a2 e' }
let power 0; r$ }" R: L4 ?2 ~, a
let local 0! j( f) E) g. ]) l6 y: {& H
while [k <[trade-record-one-len] of myself]9 ^% b. d+ M/ p) |6 q
[
; N& f6 p0 v+ r$ `7 Jset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
# n" ^0 C2 Y7 s+ l# ]6 mset k (k + 1)
5 ^* H, W! k5 u1 `( }8 B' ^: {]
8 Z- o" I5 A' bset [local-reputation] of myself (local). z  E, G. j/ ~! W
end
( z. H) t& D! ^" }, L5 Q$ `. i9 `) n
to update-neighbor-total$ R6 Q! P9 `$ \+ A% y  s
8 p5 ~3 ~. ~# O& Q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 j% R  N; X  b0 M/ a" t7 |+ R
0 c: r9 P, @7 J- c  O9 k5 z6 d3 s
+ E  Z4 y% V6 b0 f: L- B. f. S
end
0 T. a7 Q+ X8 W2 }7 k& T- `
; t" ?1 E6 f& c5 p+ A0 C; ato update-credibility-ijl : ^6 Z* ~1 c. k

" x- K# I- ^4 A- [8 z" F;;
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。8 G" q3 P# S& O6 F2 p3 M
let l 04 b- K+ ?- r: @* f+ j* J6 t
while[ l < people ]
  }  `" f- |$ p3 \;;
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- Q4 M9 z/ e; B# O4 G
[# [9 X! m0 r5 n5 I' j+ b
let trade-record-one-j-l-len length item l ([trade-record-all] of customer); a3 g  v% C% z( i
if (trade-record-one-j-l-len > 3)
' D) ?! E9 {  L. }! 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
' K$ p2 D6 p# r" G# Q* ~; `let i 3
: P- r9 U5 m! h) u/ M0 w& W1 |let sum-time 0
  u+ ^% J! e( o/ T4 ewhile[i < trade-record-one-len]
+ R' [3 ?: f/ k[5 C* D" E& I: @
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% {1 o/ p0 X( J. K1 T8 F' e1 wset i
2 M* w$ h# O% y) A7 Y( i + 1)

( ~" U! `8 l# c]
9 _3 M" B% b' l9 mlet credibility-i-j-l 0- r7 a* W( r; v+ b. F% b( U& i8 _
;;i
评价(jjl的评价)
  J+ T( E& j% _4 C* \( n1 mlet j 3
/ h& T3 R+ p" s% _9 @+ ~let k 46 k  q9 W; W" j5 ~
while[j < trade-record-one-len]
5 k7 P5 Y. Z4 Z& i/ s& k[
2 T! N4 i  S/ f4 x9 _2 a! ?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$ s  S  F7 b4 ]- j; o. i
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)  [9 {/ X$ h5 K: [' w
set j
- f. W) `. o1 _% V" Z2 p8 }( j + 1)

, `* p6 T. ]: [* \]
% P7 F8 I4 S: B/ z7 U  qset [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 ))) X) ^: P8 Q2 ^" d+ a3 c
2 m: A: k' ]( j9 h6 j* t

6 @3 d9 V1 H; U* M1 ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 P! ?5 u/ P( Q" D1 A
;;
及时更新il的评价质量的评价( c- Z! f; X3 e& ?: G& A9 ]3 F
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ D5 V. N' ~, D. y
set l (l + 1); L; P& ^3 @7 _/ W: X
]
; p* y: p3 `* j/ M8 _- pend+ u9 o. t  X* d) v! C+ }7 F/ ^, p" I0 c

2 \  M$ A) y3 q. M, Ato update-credibility-list' K  c8 N/ u9 w- W) c0 a
let i 0
9 a, ]' L0 e6 K# c% Pwhile[i < people]
& S# l* A7 {6 ~3 V* y' B[; A5 c7 [% N9 L
let j 0" {! I( V2 b( d8 w
let note 0
& M1 C# o9 v) D/ Blet k 0; C* e& _" Z7 R0 ]) R
;;
计作出过评价的邻居节点的数目
) P7 V/ g3 k! m$ q( F+ Y7 G1 dwhile[j < people]
: \" }7 T6 W3 U7 U; F3 ?/ O[
3 P, h  B# a+ z) I% tif (item j( [credibility] of turtle (i + 1)) != -1)
- Y" Q1 s: Z. ^" S0 y! h;;
判断是否给本turtle的评价质量做出过评价的节点
+ R$ e& H3 j7 b  L6 h  ~2 P[set note (note + item j ([credibility]of turtle (i + 1)))
1 C2 D6 \6 w& K) t" o; X;;*(exp (-(people - 2)))/(people - 2))]

! B7 _  ^0 c4 e( v+ Oset k (k + 1)
% q3 L' v- v/ o0 A]
$ i$ T* j( U! B& g3 I% M& M' o: iset j (j + 1), v- S$ {' C, v! s8 W2 Z
]
, L" U- c# O6 D  v7 y7 rset note (note *(exp (- (1 / k)))/ k)
1 y9 V3 o" S* u, i) P8 e( h% `: hset credibility-list (replace-item i credibility-list note)& |/ l+ ?# q, h6 n2 K
set i (i + 1)7 @7 M) n) v( z3 ^( x
]+ F  k0 H( \# t6 u+ r- Q
end8 u( {" ]  M( h  j2 p1 L. w  N# y. S

) i% p( c4 C8 ^, @to update-global-reputation-list6 P: }0 s$ U8 m9 s3 @; F- g/ F2 x! k
let j 0
# M9 z9 H2 \2 x+ C! Ewhile[j < people]5 _% x% T% ~, R# t7 H
[
: K. o. v' n6 H; F! M/ e: P% M* _let new 0
7 Y6 H8 ^: k1 L+ Q  V2 J! l; _;;
暂存新的一个全局声誉5 j! s* c" Y# `9 h  i9 O
let i 0
5 C1 G' T$ G  A$ X* V8 F& Blet sum-money 0& |9 w8 j: r+ i% m- J# T6 }2 J
let credibility-money 0; U! S* v9 m) W# }: N8 @/ u! q
while [i < people]8 V1 z% e3 H6 y* k, `$ v/ D
[
2 C# T. ^5 Y0 Q, tset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' k3 u* [( k% d8 c* ^6 Y$ H% }1 w0 p6 s+ ~' S
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 t8 g& n7 A! R1 ?5 p/ U
set i (i + 1)
( I: H0 D' Y% i3 H" I, p# q. a]( S' Z8 J& ]$ s" ]. g. x5 t
let k 0
" k1 u; u2 @8 H. K/ x( w$ Zlet new1 0
5 V9 J8 q+ F$ I) A) @8 L' Vwhile [k < people]
  U6 i5 [0 M: K& o/ C% q& \[& k  _1 q6 P5 }" X. F0 u
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)
0 O! r- t  s' [set k (k + 1)
7 U) ^, J. Q! ?' r9 }2 J1 |; f" O]
$ `, |2 ?+ `2 n7 V9 K' @4 s! Vset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- o  K* L1 K$ Z1 ?* Wset global-reputation-list (replace-item j global-reputation-list new)
- H" ]" W- r4 u2 L' Rset j (j + 1)
, k* U; M  `5 {, p) {]
. K; _. q: w7 m3 g6 o+ s, ?end- w- F* A8 G& J. [

4 J0 l! O5 i* C, f" [! |8 w! }# _( |$ }0 `$ U' ]
1 r3 k+ g: n+ t" t/ S- B: o
to get-color
; T  p/ ?: z& Q9 W
2 t) w5 @. R6 k" K1 \/ N7 Z: |5 v* e: lset color blue
9 L& v5 M( W1 k5 h9 F
end+ E. p; a. e7 Z: p6 L( Z
) p" R. D1 _$ V: |& l" C
to poll-class9 v; i0 `5 h; k3 G8 _
end
; a) ?  t4 V) q% I$ a& \& g* p1 m8 |1 W( `
to setup-plot1
7 i! G: E& o; K
& R& j/ D. n$ N- _5 @1 f: tset-current-plot "Trends-of-Local-reputation"

& R, e8 e4 _: E8 l% t8 j
0 Q1 h1 }& ]5 W$ mset-plot-x-range 0 xmax
. U! ^5 i" r! @7 x7 v0 q
/ O* [  e& i7 i; @. Y8 _
set-plot-y-range 0.0 ymax

' u4 y2 f; `4 \( K& Aend
; A- P. w! n4 j8 q
/ M  d7 Q  V! `7 N2 _* jto setup-plot2  o- d& f! E  l
: G8 V( s; t% I% C5 T) A& _
set-current-plot "Trends-of-global-reputation"

' _2 S2 J5 v- R6 U/ H3 s% }- K" h! g- F) ?
set-plot-x-range 0 xmax
3 o5 \5 F/ i* `: h
" G( L( S# p0 q& P6 U
set-plot-y-range 0.0 ymax

, y& N+ E. T4 h! D9 W8 p* lend
6 h5 d7 H) A$ {" y, @0 \5 @0 T! `* _, a/ w
to setup-plot3$ T4 d1 f% z7 a) v/ t! i+ W  L
+ ?8 Q% f2 v, ~, C9 m
set-current-plot "Trends-of-credibility"

" s" A/ Y7 q% `4 x9 b2 H" D0 L. I' F  p: I" B1 s, J) v
set-plot-x-range 0 xmax
! v7 S$ \' }# a! z

0 _4 g- g6 U, s" i6 Mset-plot-y-range 0.0 ymax
% d: @% _$ G3 ~# o+ D4 ~
end
$ S# p  N* C% c9 s0 \# z% _. [" `# i4 }" S" n; m  p7 G
to do-plots
% O  A  ?9 _2 i( B  ?$ ?! Y. V! [set-current-plot "Trends-of-Local-reputation"
/ B% X0 z% v' \7 R+ d& K9 W( P$ eset-current-plot-pen "Honest service"
; z- G+ ~9 u/ R( v7 E, }2 W; z- ]end8 [8 a( d7 n# U* N- D) K

8 j1 K# r, d, n' E[ 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.2 W( R4 H& f! H
: h) Z9 ]; t  ]: k2 [! ~  j
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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