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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:
; e* q% }. r8 U2 Xto do-business
6 y) M3 M% A2 {# q rt random 3602 }2 E8 ]. c( l6 q) U/ c* D
fd 1( u% J' C" B1 [; q
ifelse(other turtles-here != nobody)[
6 H1 x0 h9 A+ [- ^   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.
7 o" j  A5 b, x+ \5 Q! J; q   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 l& s$ `8 J8 s4 c   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 I1 J' w, Z# p9 @" v
   set [trade-record-one-len] of self length [trade-record-one] of self
, P2 N- P( }4 I- z/ C% S   set trade-record-current( list (timer) (random money-upper-limit)). ]: m0 h  Z2 ^8 I: |7 O7 D
7 P& q( V+ X! c( w& k2 N
问题的提示如下:
0 k0 ~6 o/ Y; w5 d4 c9 b, S: i% n8 p4 \* ~& u0 c$ o0 i0 r4 ^
error while turtle 50 running OF in procedure DO-BUSINESS
% D" z6 D4 z, y  H  called by procedure GO
- C+ t  g8 g6 w0 m8 S( EOF expected input to be a turtle agentset or turtle but got NOBODY instead.
  K: h9 d6 j" r9 @5 {6 A: ^& }
(halted running of go)/ c! V/ p9 {1 Q0 o

- d* Z; k4 d0 A2 J) 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~~3 i8 t% O" q+ J
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
- J4 M. l$ |  X# H4 ~# bglobals[
* |  k$ r$ y% o8 ]0 E$ P! L& Q' fxmax8 {' ]6 @0 w7 Y" @, |' s1 X
ymax
9 U$ [) f8 s7 z) Q( Hglobal-reputation-list
6 a; b5 V: e0 o# O+ J8 ]* W( F* Q2 u9 Q
;;
每一个turtle的全局声誉都存在此LIST
- w9 P% C5 k. g) Z  r1 |credibility-list1 d  m6 Y5 E* t
;;
每一个turtle的评价可信度+ G  U" n1 W/ f2 A7 t. I
honest-service7 A4 P! _8 p; I" y# h
unhonest-service
7 n  }* @! N" z$ ]) T$ B% A( koscillation3 e5 ~( o; k- P8 T
rand-dynamic+ S( Y" \: R  a; S
]
8 H( a6 f2 g+ K! d
. {0 }1 k9 H/ ?0 p+ N4 e5 v% C, jturtles-own[5 ^; R% U8 n/ j# W- k# u* j7 e0 {# g
trade-record-all1 I! t9 ^$ ^4 D- ]1 [) P
;;a list of lists,
trade-record-one组成
  X# C4 ~) D  \- [9 x- O% [6 ftrade-record-one8 x5 a* b* o( ~1 h" A2 \( Y
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录" \# K, ?9 o4 ~0 E

) b  Y0 a- E* n0 v# K;;[
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]]
, h+ J7 ?6 |, [  e4 Mtrade-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]" ^: a9 G: q5 Q  d2 O( 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list
) r/ d2 _% I" f2 }* ~2 Fneighbor-total+ Z; b# C4 Q+ |& M6 \2 p: h
;;
记录该turtle的邻居节点的数目
# s1 ?( ~! F7 V5 gtrade-time
2 z9 `( X( p: G/ r- [' a;;
当前发生交易的turtle的交易时间
4 R4 Z# m% Y/ f% }- h: s0 X! H0 pappraise-give
. e& h! n% ^5 `7 y9 K& `6 h;;
当前发生交易时给出的评价4 l2 f# f; w3 Z0 m: f/ D
appraise-receive
4 K6 r7 x2 W4 @- i3 H6 i( X;;
当前发生交易时收到的评价) Q2 I. [; j5 k2 A3 r4 g: [4 d
appraise-time. i8 L0 `5 v" h
;;
当前发生交易时的评价时间, _4 L8 r+ e' Y3 [
local-reputation-now;;此次交易后相对于对方turtle的局部声誉1 T! ?1 `- t/ g1 g
trade-times-total
: S+ U3 I/ w+ z$ ^5 ?- w5 C( `- @5 };;
与当前turtle的交易总次数
) K3 v* L8 A! _$ Qtrade-money-total
( K9 o' Q% v: K) B: p9 Q7 s;;
与当前turtle的交易总金额4 b- `# O# ]' B& J! n; E
local-reputation
! W* S' U' A5 s, y. mglobal-reputation
3 U9 f- q& g4 Xcredibility
1 D# ~, \" f4 d. O/ _8 h# ?7 r- N;;
评价可信度,每次交易后都需要更新; |0 s% J+ L2 ?7 _* r+ a2 Q! J' D
credibility-all2 |& A- M% v+ W+ M) E, T. 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  K1 P) C% `" g6 z& o' g
8 v! w( n/ q" Z
;;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' c8 K+ O4 I9 d6 M6 N
credibility-one
% e- {' P' R: v, Y& `5 g;;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+ {; Z% j: Y/ D8 _! p9 M" V9 `
global-proportion
8 m* N! {# j) h2 h6 P2 Xcustomer- g' W+ Q5 T/ a8 O  I, |* `5 y
customer-no6 p$ b( ?3 ?/ q" M: T# d
trust-ok
; O8 Z, ?' O) Q0 D: i& @trade-record-one-len;;trade-record-one的长度# t# a) S5 N( y  t9 B" r/ m0 x
]
. G0 t# x9 A& I' }0 \/ C; p9 ?: _5 K! S# N" L. a' M' ?: n
;;setup procedure
  ]: g2 W2 L6 b2 ?- P
3 H' w" Z7 v, V5 w! J  V) Wto setup
- W- o: t. ?! g: l6 i$ H/ f" B8 _# P+ _. G! Y" c6 ]9 P
ca
7 f2 ~6 h) B6 s5 T7 C& [# C- j$ p

+ R' \3 ]# x: W+ s' T3 y  Z( ainitialize-settings
+ H* T( C+ Y! \+ i- Y
0 t! D( M% b: U0 e7 K9 F
crt people [setup-turtles]
4 o0 f4 q, {8 ~3 E- |
4 f9 w5 Q# R/ A! }% y
reset-timer
& e3 \& x  U6 Q1 Q) }

7 x( ]  ^. b1 b8 e6 e7 g: w2 z7 d" E1 Ppoll-class

$ |3 m0 i6 \% i8 {( I
  j' V! w6 p2 @& @) \/ Osetup-plots
& n  \& x! R. A: M
$ T) `4 n* W$ @; D4 a5 j
do-plots
: n$ k3 @  e. f' v: p7 O2 |/ V
end0 |4 A* w, l% S

  J% u/ E3 O' I, Q6 Zto initialize-settings
7 l- M* Q  _2 V3 D7 }
/ Q9 r" C+ c! C' Rset global-reputation-list []

) I2 e7 p& e6 l3 i: V  N
. [8 [0 x! B: T$ y9 ^set credibility-list n-values people [0.5]
" f: a- S( {0 }2 g
  z3 e, \* ?; N: y% F
set honest-service 0

/ n/ i% k% [5 w: G: _" n
+ z9 {; @1 Z- O+ dset unhonest-service 0
' L7 G9 _& ^0 u- U2 Y- x0 o
$ n+ ?" o2 s& h$ c
set oscillation 0
# I. S4 C0 l  b  q

% Q1 i5 n1 q* |' i$ J7 t. mset rand-dynamic 0
& g; S: M8 S4 K
end
6 [: a' y3 Y& p! A& D1 |/ T$ H! K& |3 b% a6 r
to setup-turtles
5 @, B7 ^$ x) S# jset shape "person"6 n7 }, o. B3 z' [6 ?' h7 z: i- G
setxy random-xcor random-ycor
7 P$ K' O6 C0 v4 L9 R- d/ mset trade-record-one []
1 Y8 n. _2 N0 X) E: v
2 F; E' s% }* j7 R+ J$ X
set trade-record-all n-values people [(list (? + 1) 0 0)]
, ~2 O' C+ b4 W: D5 n7 @

9 ~! |) j+ x4 L4 I3 iset trade-record-current []
" N- g7 V# i- [. U$ Fset credibility-receive []$ \% u2 V, \4 L: E4 U. Q
set local-reputation 0.5
8 e# K  N% u$ B  J) Bset neighbor-total 0" m9 t! Q* N, o7 x" C( ?
set trade-times-total 07 I9 U8 v# I, y3 j* x6 e1 B
set trade-money-total 0- |8 P1 j6 w5 b+ v
set customer nobody9 g7 d% ^7 M* P, ]( T3 ^3 ^" \9 W
set credibility-all n-values people [creat-credibility]( V: h& Z6 T9 G& f8 z9 b
set credibility n-values people [-1]  k6 j' l6 G5 C  e* f: s1 e
get-color
1 o3 Y  N+ ]. |6 B

7 i$ e6 W* P0 c+ {* b( D7 eend
2 q  h7 q& l: [0 x3 L  t8 e& E6 j1 C8 q8 e
to-report creat-credibility7 `3 z9 G: L' o8 r1 {
report n-values people [0.5]# c1 ^! {6 T# n+ h) E6 d5 z
end8 b! S4 X1 _& c  Q
( Y& \" T6 Q+ {) Q/ L, T
to setup-plots
! b3 L  }# i3 h( }. A8 k5 L
  d* K: n. G; h' H9 d" T1 Cset xmax 30

, [! e( P8 U/ H9 j# x; G8 P5 |6 a  i; p# p( M
set ymax 1.0

) S( g/ j" J4 L* m
% Y/ Q  C8 c' j2 Kclear-all-plots
% `" m* F! p) g2 W  r* [+ _
' p- ]" S/ w" w: E( S+ a" G2 \
setup-plot1

/ X$ g2 \+ K3 i  S$ x/ o3 g: s% s% ^6 O' E, i+ ^
setup-plot2
1 {4 P0 }* t- c/ X% ]

6 `' B2 q' ~4 u: x+ ^4 }setup-plot3
0 T0 B9 t+ |/ n/ f. F7 D4 D
end3 L4 f8 c5 P2 L! _) S9 i" u

& d: A4 U/ \& W6 Z; R/ g;;run time procedures
5 u+ ^' q" t- `1 d% b3 z+ c7 z9 {' w& f" N7 e* U7 z2 y* u+ S
to go0 W  g! R6 `  O; c

1 j8 i9 y- c( ~ask turtles [do-business]
/ K0 @+ r& [1 i6 u! ~, I: h
end" f# W3 K" ?" v! I# O2 S

; ?/ C5 u. ~7 `' Lto do-business
( H- |# o: L6 u% X& r" _

9 P# [' n6 X* P; [- \: C# O; B% N
9 J5 w# ~0 O8 a# A: irt random 360
  L, c3 @# ~5 i0 ?( `! a
: z, \2 b5 N# s* ^2 L+ \
fd 1

. J( o) ?; v1 T' P: p' V7 p
* ~+ w  X. {: P9 H2 {+ yifelse(other turtles-here != nobody)[
$ @* o8 e" t$ l3 i0 Y9 O
& D& D% Z3 |$ E8 \% S8 E9 b
set customer one-of other turtles-here
6 w4 u! m3 H+ w7 p' {1 d. f6 }8 P
3 j% r6 P2 ~6 W' M% X, ?! m0 u; T0 k
;; set [customer] of customer myself
; J" _0 v  h( g" ~( |! A* ~+ t

' `* T, K0 ]$ J+ I' bset [trade-record-one] of self item (([who] of customer) - 1)1 \  j2 }; [, s
[trade-record-all]of self
6 d- z) D, o- `. u, l2 `8 p8 t;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
) j9 W: R( t2 u+ u4 E! C2 b/ ~3 A

9 M- [" H1 o1 d# g- V1 w6 x) gset [trade-record-one] of customer item (([who] of self) - 1)  R) M2 `* j- e& I6 ?
[trade-record-all]of customer
4 V9 W0 \6 h- O  ^  r# b. d
+ h) v/ w8 ^8 M; |0 u# g7 J
set [trade-record-one-len] of self length [trade-record-one] of self

7 f5 ?8 E1 a! @1 y1 ?
& B( m: o7 S( v, X6 ^' zset trade-record-current( list (timer) (random money-upper-limit))

3 e& G& \7 c2 q# I4 n3 O" c# ]4 p7 u- p! F) O1 B" `) O3 l; A7 i5 [
ask self [do-trust]
( Q$ J1 e% D, ^0 ]0 T7 O" P;;
先求ij的信任度
* [6 |7 J8 i6 }1 \3 J& G* r! R7 E  e$ G, v0 o: L, c9 J
if ([trust-ok] of self)
7 f" @; U+ N! l1 c! r;;
根据ij的信任度来决定是否与j进行交易[. t4 I4 i9 d  e9 l4 P  ?3 e
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ d1 g7 H& @  [" W" d0 u0 u% ?
7 ^4 C8 J7 y& h' Q+ L- W[

! t- {3 y; |$ C6 }, ^' |: e1 a4 ^' J8 H" o+ Y
do-trade

) k8 n& \1 U! H3 c8 U- _, Q' S6 c% X. W" [- {; f6 F
update-credibility-ijl
! g' {9 J- }0 ^, P# R5 E- i2 ^. w
0 z" B5 h3 ]" t0 W. b. Z8 I: K; J
update-credibility-list/ Z  }+ l" I3 X. M% i( v, Q

3 N. Z$ w8 o9 Q0 P& N# }2 g* D6 I( D$ x0 D6 D1 o
update-global-reputation-list
, V* r+ i: Q* k9 T2 m3 Q

5 A6 U% j- ?4 i$ b- {poll-class

# b4 R2 W3 B' f- k9 G! G* t6 d$ i# ?& n6 T; y$ o+ e: I
get-color
! ^5 n: I# p' @! s! e

' v1 a7 C  T0 G# q]]
1 w) K  b; G1 ~# q5 E
. a3 f; F' ?0 h' K9 y;;
如果所得的信任度满足条件,则进行交易
5 L/ Q. O( W3 z1 v' B2 k' P1 [- |( X
[

: A4 [5 B9 A  e) O- e: Z( {+ J2 g- T
rt random 360

- D4 g/ m, x$ m; f6 k. F" f" F% [' _, Z. h& u. g( j& `
fd 1

' R& O$ L, {" ]5 v5 k  w2 q. P+ z# ~1 C* s: j2 A' v$ `+ O9 g
]

* Z8 R3 Y2 r2 o& w: q" M& k9 {/ ^# G) n2 Y. D4 Y- ]/ k( N! m+ f
end
) u: X! J9 \% ~; [% P0 M% y, \

. X$ J) b1 @1 n/ Zto do-trust
9 [- y/ J& Z/ M  |, }: Wset trust-ok False$ D6 K4 |4 b0 C2 f* Y7 p
1 E3 e: ^0 e6 ]9 m
7 {8 n/ Q+ B1 E' H
let max-trade-times 0$ L8 B; j' a" i- n, S
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: f; C; W4 B) V* m. J' olet max-trade-money 0+ t( Q8 K! j; H$ S2 l) g* I6 @( n  K
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 j2 {2 f5 Q7 O) R! D. I
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))2 }# t. H) Y4 `; z+ W" y5 w' s7 J
# v- ]/ J' `' j$ {: k

$ w5 p8 J& V, S* c+ v( @get-global-proportion* c0 e* G$ C% H: d$ j
let trust-value3 T9 k* U: f6 l9 V1 Q- d' M+ A
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)
- }$ g9 N( a3 q0 M1 s; C
if(trust-value > trade-trust-value)
0 \  g. o0 z3 [8 ?" B4 w1 a[set trust-ok true]
2 b  u$ a+ w4 xend( _: o2 e+ L* t) L: ~1 W& i: v$ `
) ?- Q0 }" o% U
to get-global-proportion
3 d+ {5 p! K  S. d9 B8 ~+ sifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 t& G. [; b/ |: \/ @1 b
[set global-proportion 0]9 A& M5 T+ y( c2 F) C9 r9 o
[let i 0, d* p& V. v* M
let sum-money 07 f7 B; b2 m& `' C. I& q5 {* H8 q  E7 S
while[ i < people]- p6 \8 N( F: U! y$ [& t
[
+ i5 l! A# G7 k+ S3 U# s2 O) |if( length (item i; I, L& h" V* Q6 }
[trade-record-all] of customer) > 3 )
1 K5 p; W1 l% q+ U4 q
[. \( e2 y8 F+ Y) n9 m8 a" ?2 m
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 ?, S# ?3 A8 w+ T, ^7 c1 E
]5 q# L6 @& `% X# @. ~$ N9 f
]
6 v4 Q6 `' ~1 T" ~8 ylet j 0
7 I; l, [# w* ^) [& t3 ^+ olet note 0
' ]' A* l5 r; B3 ]: h, e" X6 mwhile[ j < people]# E8 G0 C( l5 x7 Y3 |  W
[
: ~$ D5 h  V# N" Vif( length (item i- y' S: p) B& d% Z5 |* X! n* z' q! k
[trade-record-all] of customer) > 3 )

5 r. d6 i+ |$ e% y% X[
3 C; i; M+ l4 H9 \1 m7 ^% g$ Y& ~0 hifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 m5 T# [: k/ T, x
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
( D7 d+ p& d" e; X5 M* F[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" h- s. D9 \% s8 w' @. m6 M]3 l# S( J) N2 f( G: _% J
]0 T4 S  ^+ _5 L+ e, }7 H$ j
set global-proportion note
: Z( O' r2 z0 L( |8 b6 w; e) D]
! f! v6 C" \" Kend
& Z/ k! ?6 Z% g, W5 H) c. f& r) ~9 F
: k: B& A8 O) uto do-trade
; P- w6 |9 Z$ m: G;;
这个过程实际上是给双方作出评价的过程
; _: i9 Z% f( t: @8 vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. A9 N7 L! B+ G+ G0 d* Kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( ]% f  G9 R- F3 J$ p- V, Q; n
set trade-record-current lput(timer) trade-record-current
% g+ X- H: V1 O' `4 W;;
评价时间
/ d0 ]: A- a6 mask myself [$ v7 n- G- {/ ^% _% D0 K0 k
update-local-reputation
1 V3 |  @* E# ]% v# `8 x& P3 V9 }set trade-record-current lput([local-reputation] of myself) trade-record-current
* h1 b8 W% U6 `5 s]
7 J" L, x' s  l& P; ?/ Wset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
/ N* d- v7 Q3 C/ r. l9 `, ^; ?;;
将此次交易的记录加入到trade-record-one, o6 W8 D7 Q- T$ M6 m- \
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: i/ d7 x+ m. |& d( ?2 `% flet note (item 2 trade-record-current ); R5 k* ]+ G2 h6 y  n( N4 ~: R
set trade-record-current
3 g" P) o& X, F+ ](replace-item 2 trade-record-current (item 3 trade-record-current))
, Q- I: ?" v8 Y$ |" L. L5 {
set trade-record-current
; @1 H$ ~+ j9 M" [) R(replace-item 3 trade-record-current note)! E5 j5 ~9 x$ E

  ]* L. l3 l7 i2 Z' m4 h; V

" \5 ~- Q  j/ @$ T" k6 sask customer [
/ C9 T# v* x9 a* o: Gupdate-local-reputation6 ^8 ~* v% M+ A9 Z5 X
set trade-record-current2 v0 `5 d* H" ~4 X5 ?. \' t
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% W2 U1 K" _5 d' N# I$ B' g3 n# `]3 z; W4 T8 {& U7 q' ?3 [# J$ F

: U9 B% w& T& P7 j$ p% z) W

) z5 r  r1 Y# {0 u0 l  mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 D' S- w& A* m& }" R7 M
) I3 G' D5 e& F/ A0 r/ o
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))+ d0 w/ ?3 T! |, P4 |
;;
将此次交易的记录加入到customertrade-record-all
( W  T2 q$ j& E3 c4 oend- q5 d0 Q) G' w3 o4 I6 {& V, r6 P
. W  f5 g  G+ N/ ^; E
to update-local-reputation7 U( D6 [% K" o5 D- v
set [trade-record-one-len] of myself length [trade-record-one] of myself
9 P* j4 f; E( a, }) G3 m$ }  ^! W5 _* M

2 |- ^, z/ @. E4 \# Z;;if [trade-record-one-len] of myself > 3

9 L7 O) R7 s! I+ }, aupdate-neighbor-total' J4 i/ j. L7 b3 F% G
;;
更新邻居节点的数目,在此进行/ p3 |3 `1 S2 c( D
let i 3
+ N; s- J6 m' J2 N- l7 E) F7 \& jlet sum-time 0* x& g& S, k  |
while[i < [trade-record-one-len] of myself]1 s) a/ _5 Y5 [6 ~1 \
[
) l0 p* {$ ^/ G$ Bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* \1 D. r  K6 }set i; k" t. a$ e- J6 @- v% {
( i + 1)

/ A* |; G& G* ]; x4 s]0 q4 V( F, }9 J, F# y8 j
let j 3
* S8 q, e/ I9 Z: ]7 K# Q8 n& [3 Llet sum-money 0
1 H4 O: R! @  c8 |while[j < [trade-record-one-len] of myself]
& k8 I! a3 v, e7 z# E[7 W- n; z5 O. R
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)
, z. u$ r4 g/ B' _3 m& Uset j9 h+ x) J  H9 X7 U0 {: l; P, X
( j + 1)
0 a  c3 s/ i1 g. G! r( p7 r- p( o
]: E# N7 [% ?, y. Z! j
let k 3
+ t  S( Q* `& b6 n8 D  v% [7 wlet power 0/ H% p+ o/ a1 O; [# V0 _3 f
let local 0
" l9 i7 z7 c  uwhile [k <[trade-record-one-len] of myself]
. f/ Q' \/ _9 c5 V8 [1 I/ u[" A/ ^: R/ j: c
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) " W+ x! o* h5 e) I/ |1 g
set k (k + 1)
+ r8 d" E) H4 d, [* H' ?]9 S' e0 N! E8 {7 N) G0 `
set [local-reputation] of myself (local)/ Y- H1 Y6 @# B3 s- W0 S
end- g. m+ y1 g3 F+ J' V! H( v
7 B6 q  I# L( O1 N% Z
to update-neighbor-total8 |6 d2 N; {: G# `: ]
' Q& A) T5 r1 U) s# f4 g0 V
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* Y  @! v  P+ x" G1 A8 L* O

; O% B  k0 Y, k4 l, t6 P# Y! i9 \

; y! X8 L* D! j4 @2 r  U3 Jend- \) ?; f5 \$ p: f4 Y1 Z

5 F, Q7 J0 A* B& vto update-credibility-ijl
7 r; r/ w0 Y& q5 p
( Y( G. x# G' ?; J4 }; n;;
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。
. L3 O) N) b2 v7 Vlet l 06 {# ~8 X/ i7 [% c+ p. d
while[ l < people ]
, q" ~4 t/ K% D* G2 F* a;;
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
. [$ [  e5 U- r, c  D* l1 k8 e  J! c[
% y6 z$ r% x5 ~7 x9 G7 e9 M, `+ Klet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& m* a) Z* E- H, ^$ o& R) J3 oif (trade-record-one-j-l-len > 3)
. U4 _" E; g" A[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
& ?1 v/ q; C: R' [" \; R* [let i 3
# Z3 d5 P6 J: z& Rlet sum-time 0
. o" O% D/ w1 X! m2 uwhile[i < trade-record-one-len]* ?2 ?) V& i' ?4 @6 \
[
0 f+ v- R. J( ]; [1 j  i, k/ n" Tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
9 X  C2 k6 f& N; F5 p2 y# Hset i
/ n- [( ?8 [1 a6 l5 Y( i + 1)

0 l0 {: E& b! T]( H6 z* V# Y9 Q3 H$ I7 [1 C: {
let credibility-i-j-l 0
: ^+ ]& Z/ {6 i% ?6 @;;i
评价(jjl的评价)
) Y$ `! }3 u9 a( K9 n$ e+ j, Hlet j 34 ^  [9 [7 b0 g
let k 4
* a1 D6 z% `& I3 Owhile[j < trade-record-one-len]
7 e4 A& h, ]6 v0 {, `6 y[
0 r. `3 {2 q& }5 K0 K, Rwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉$ K8 |4 q/ w0 w/ V! J# |1 q+ _
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)
) C. O8 z8 Y: C& G" _2 Bset j: z: V! f& j; y
( j + 1)

- f9 l& M  R8 ?! I& O]5 B4 I/ m: F* G/ {3 i8 [7 _
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 ))
" ^( f# U, d# L' _) K# ~- T- ^+ w6 c$ u# @* D; e  [! ^
' t, \. F. j" d8 n  u5 S
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, b* K9 W" L# _;;
及时更新il的评价质量的评价
# s' u1 @( P2 J3 O8 x8 \set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 [2 s( d5 |4 [6 F
set l (l + 1)- @0 X" b( \7 H. ~9 M+ F% L
]
0 a5 x2 Q. D! K! h$ j" aend
$ \% Y) K6 o: X) C% j5 a/ w1 a
; L: J6 j; u1 oto update-credibility-list
  C$ e5 g, ^# ?! ^1 p- Mlet i 0
6 H7 Q& R# a  n1 Uwhile[i < people]
9 J. g. Q0 l! R3 l[8 O: s6 k2 C" C% p
let j 0
* k/ U  }4 Z. y5 Vlet note 0& s- l' k% p$ |) I6 ~0 Q/ ^
let k 0" p3 A3 G  \' B
;;
计作出过评价的邻居节点的数目3 C" }2 l" N' t/ _& I' q, [" _5 M( x
while[j < people]% y% n0 Z7 j- Z
[
: n$ ~  U7 W# x" |3 C9 {if (item j( [credibility] of turtle (i + 1)) != -1)
) r. b/ P& g0 i;;
判断是否给本turtle的评价质量做出过评价的节点
: x4 Y1 i% _/ J4 C$ h7 a5 J[set note (note + item j ([credibility]of turtle (i + 1)))
6 C. O' s0 n4 n8 m3 K;;*(exp (-(people - 2)))/(people - 2))]

" ^$ N6 f- D2 d1 o2 r/ G- I" l$ N  Wset k (k + 1)
( W" ?  j  _$ \& H2 N7 {/ M  y]
8 @. Q8 @- N/ u7 y- P) ?set j (j + 1)! x9 F) ^% l1 O- n% v
], z  c* H. @# C4 Q5 x3 z
set note (note *(exp (- (1 / k)))/ k): x; L1 c1 M; Q  G4 [
set credibility-list (replace-item i credibility-list note)1 K' A- F! q8 w; O! }, X$ E
set i (i + 1)
+ I1 v& c& X- c]
" B' z% a5 O1 A: h( C+ dend, p& ~3 s* Z7 n) I' k: [8 _; ?, O

  N! l$ N9 B: O3 ?to update-global-reputation-list: F; U: ?2 f* E
let j 0+ n% j) m. e/ U+ u. e, s
while[j < people]
$ `+ i2 ]' j  j[$ W: T4 H) @8 c, T: i  s4 |$ ^
let new 0
* Y0 P. k0 l# `6 P, |, b0 j;;
暂存新的一个全局声誉3 L! _. E* }( m9 @
let i 02 ^- _- I& S/ h7 V: w2 Z  J# z9 Q' I" }
let sum-money 06 [5 k- T. w7 n8 s
let credibility-money 01 s- ~; Q1 z; G
while [i < people]; D+ A  Q# n' I, a/ R: l
[( f* ^1 d0 E3 I6 |( S, K
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 n; ^7 B4 I6 H/ @' f4 c5 P1 T% @
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% e: h4 v% Q+ G1 w' O6 gset i (i + 1)3 @8 M, O: Q) Y( Q4 h; X- V, X
]
' d1 L; S& j' Z$ U0 Z2 M/ y) Blet k 0
/ H' S, k6 e2 ?7 Hlet new1 0
) {6 d( U9 x2 H; y. @# [while [k < people]/ ?# i& O/ L- O7 W9 L: Y$ a8 _
[7 P+ W& Q% ?+ A; y. `  j) B
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)
1 f& f+ k) v" u. y3 f& `set k (k + 1)( l% x) X0 m# C- I# \. ^7 U
]
" r, \3 I* ~" Fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 g* w; L  ]! Y4 N! Y% o- L! X
set global-reputation-list (replace-item j global-reputation-list new)( j% m# G! ^4 z4 w0 e. B$ n
set j (j + 1)- ?( Q5 f4 I* F' Z6 X2 J1 I
]# @! P) s, F' r( j  n$ K+ ]
end9 n) I8 f2 l# ]& ~

% w' L( P) O9 T" h5 Q" ?  g. A. \7 X
( Q: c6 Q; w# p  U# F
to get-color
2 E8 d# ^/ T" M# J3 h4 o1 Q% T+ Q7 U- K# h; f' j
set color blue

; w% A3 m$ {+ t5 t7 Dend
( l: A  y2 O7 P) R9 a7 t: T* v* c. Q+ F& o/ f% a+ `/ D7 |
to poll-class( x% H: [3 |6 P" Y1 @# n
end
% s: f9 p0 [, b: G* n- X6 H, S) y2 h' q! o: d- `
to setup-plot1% C3 b( I* ~* }
- Q; o  L* Q2 }; Z
set-current-plot "Trends-of-Local-reputation"

6 M4 V$ A9 T' t/ M0 O0 x: g. k7 U
4 F! e/ z( j+ ^& Rset-plot-x-range 0 xmax
1 w# \+ u/ o4 r. P5 i: K! b9 y" A
7 F( m5 W# I4 H0 E( X+ |
set-plot-y-range 0.0 ymax
4 t: ?( y; R; e. y2 l9 A
end
( z2 _& z, ^! J. Z, Z; J  G! @( ?8 i/ k' l
to setup-plot2: O  ^* c" `+ q4 {$ W
" G0 `7 t/ Z8 \0 P9 `# O. G
set-current-plot "Trends-of-global-reputation"
+ K( }* [6 o0 W* j' N& Z

+ E2 j0 }# G( {3 M  W5 _0 [  yset-plot-x-range 0 xmax
0 D. \  a) i' |' q# p( o$ _

2 W6 E1 W% _. j. p1 J/ `3 |set-plot-y-range 0.0 ymax
3 U/ k4 C4 }7 j- Y/ X
end
% v& t, X3 k' q, p3 S; m6 k7 s/ r/ f5 R( G1 o
to setup-plot34 H7 }( L1 @6 {7 ~/ Z+ o# e, T

( U/ b* r5 K- qset-current-plot "Trends-of-credibility"
; C# ], k; f1 F5 `" e

$ g! Z% [! E7 R4 eset-plot-x-range 0 xmax
2 a2 H$ I+ A/ ]4 K
/ o) Y& F0 }$ u# x/ o8 ^) l! j
set-plot-y-range 0.0 ymax

# |! U/ N( [* h7 M" g+ Kend
- _$ w' j& i2 c; V7 H
3 ^4 V: X, G, ?  U* Nto do-plots% S- v, q1 a+ N( z: @1 Q
set-current-plot "Trends-of-Local-reputation"
) K4 A/ J' C9 [* t1 i! E9 Xset-current-plot-pen "Honest service"
! D! x  N  E7 Fend  z- u" }% I7 v, a0 K
+ x) {# L8 g" z. T" @0 T; R5 K1 J
[ 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.. i0 [+ F# t, Y

8 i/ R/ y- M. Y1 Q5 `7 k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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