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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:
0 @: ?5 w7 E! T* ?/ fto do-business
  Z9 }1 H. e- G) E+ |7 j3 f. a! g" X rt random 360
# h5 T0 J( U* J. @4 x  _8 a& _ fd 1
3 s0 G# x0 X! C# u' I9 a ifelse(other turtles-here != nobody)[+ ?" I7 s/ b3 P! U
   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.
# c* s2 B5 q: C7 |9 \) g$ I/ v/ {! O   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , ?2 D$ C9 {2 Z6 u/ ]
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 Z% u0 z. W% N
   set [trade-record-one-len] of self length [trade-record-one] of self
6 ^/ Q9 ^: V% s2 D; f   set trade-record-current( list (timer) (random money-upper-limit))
5 _! h! O- R2 z: g8 y1 k7 S+ m& ?- x: P
问题的提示如下:
% O6 R1 L( v5 B# K1 c" A( e1 i+ Y2 n- Q0 y1 X
error while turtle 50 running OF in procedure DO-BUSINESS
( L) T+ J9 Q* t- {7 I# B  called by procedure GO$ I, B! i# Y) v; e) \5 \+ s
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
! C1 D3 v3 ~6 Q7 Z& j2 Q
(halted running of go)
+ k3 N; n- l( A9 e* `: t' ?# t
$ J$ n# \) M. R2 v: n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~~6 h% w$ M8 }1 ~, i( n
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教1 M! l/ d; _) Q  N, c" m
globals[
) V2 n7 |, q3 {  [xmax
) E- ~8 O) i& ^( t/ Vymax; H$ t% G$ \. X/ _5 i# W1 `6 T
global-reputation-list
3 N6 \0 x4 Z+ {' d% V+ v7 A# ]* I$ F( k4 `
;;
每一个turtle的全局声誉都存在此LIST
0 ]5 O- ^3 B2 h( K% Vcredibility-list8 J: z$ f4 }; ^! T1 p
;;
每一个turtle的评价可信度
0 y4 ^4 k6 {: d% k& jhonest-service
9 c9 u: q- ]1 V- funhonest-service
; D4 C# v. A7 e4 I, hoscillation
- |, l: y3 O2 Z: n+ prand-dynamic7 `  o$ h. L# f0 @
]" u' Q1 \3 @% X$ r3 @
  V# ~9 P- D: [
turtles-own[
5 _7 N  D2 g' t8 L  a# w# Q5 ctrade-record-all- R7 w. O) |0 E( N; ?& Q. t
;;a list of lists,
trade-record-one组成1 x$ j) w6 d( i
trade-record-one* Y. q7 F6 G, E2 _1 ]
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 M2 n# Y. M) }3 ~3 U& X2 _
8 n, ~6 q" v+ q' P5 ?$ i! n( x
;;[
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]]
7 K. k* K) x1 Y" O# I( q5 dtrade-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]1 s: R/ Q% \$ }5 M6 l; |- Z! x
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) \4 F9 k9 l* `) Q3 C
neighbor-total0 F9 K" f' g% T7 t8 {' ?1 d
;;
记录该turtle的邻居节点的数目& b% l; u# Q- I6 a$ I
trade-time: a4 t' e  v" J+ I, z; T8 O+ g
;;
当前发生交易的turtle的交易时间# P. v& }9 L6 [' F7 _+ Z$ A2 u) P
appraise-give# {- Z- n2 z* W# K6 D  S( O" O" D
;;
当前发生交易时给出的评价$ x. {1 j) n5 z5 B/ o6 j3 Q
appraise-receive
# g/ P( r) x9 H6 I; t4 u* j# U  M;;
当前发生交易时收到的评价5 T& @4 X3 e  C( T8 D
appraise-time
" Y' F7 Z( v3 C; L( B3 {; g;;
当前发生交易时的评价时间
5 x7 i1 p' |4 }9 `local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" z* _# d$ K! @/ [4 D* g# I: ?trade-times-total
4 A, C% ^# ]+ N6 R9 H5 Q;;
与当前turtle的交易总次数0 J, @' K1 T! W
trade-money-total( l& x, `6 U, W- W8 g" C
;;
与当前turtle的交易总金额# O! F( f5 }4 I, E5 y
local-reputation' k6 ^8 w: s, _% g  p/ n
global-reputation% D4 P: Q  D/ f# l. M5 r) v
credibility
4 Q& w8 Q7 }8 z; z3 C4 U! B;;
评价可信度,每次交易后都需要更新' S9 U( j( o1 V# l
credibility-all
3 X/ q9 o7 O( ^- A# b;;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9 V- q' @' A, x9 O* R( I+ S
+ s3 r* N- W" }
;;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& s& x5 P$ c; S1 w! Q$ Q& o+ u9 ]6 P
credibility-one
) j! T" ]# j. ]/ p# V/ ^+ \& Z;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people/ g0 V+ l+ x0 g$ |* ^
global-proportion
, G: G/ K+ h1 p; N3 gcustomer
. J" C6 w, [" P# O! F/ v3 c& H: ~customer-no
$ v4 X$ I* o# [4 a  C0 ]trust-ok& U% B/ Z$ V/ F7 y9 j
trade-record-one-len;;trade-record-one的长度) Y: J9 m! ]" r! _6 c
]
) J: w: F( I3 E6 d: r. {- s1 D
% y3 y! K; `- \2 n; V: N* r;;setup procedure' ]! T$ C4 U+ f( t! F1 v! g2 K, [

2 m) N1 j5 t8 ^5 r3 ~0 Uto setup+ E, E" G9 Z. p2 |. ?' y
1 ~" \% A" L# c
ca
5 ~4 e  x$ c/ s9 N9 l% o+ z
  v! Q9 E" ]8 X6 |
initialize-settings
  H) W7 Y  Y8 F

# F) p0 \4 z! \crt people [setup-turtles]
  V) X  E) _; I" r9 k( M

+ V: v9 A" G! l; h$ D5 s. Q& breset-timer

3 h4 ~) R- z# q7 L) `& y
" P6 ]. j) ?3 |! T$ g& `! apoll-class

6 l" ?& R3 H6 Q" Z( W
2 w) y' e2 I$ K$ Nsetup-plots
- Q! q$ F9 u' j

: P" w0 J  q2 Q  i8 T2 ydo-plots
6 Z/ v" B( h& [5 [7 O
end* g+ a' k$ M- I; |/ C5 F7 w( a8 U

, E! _7 ?  d; d! R1 M# w6 R! y) p" ?0 zto initialize-settings
9 }7 D% H2 P, {
8 ?- ], t  J2 E$ t  M7 i: Zset global-reputation-list []

" ~* V1 B( ?, G# p2 ?# o
! i0 _+ f4 D' F3 T1 l- }& kset credibility-list n-values people [0.5]
) X0 q5 h; U; h

/ z0 `- c: ], V$ p; }% Z6 |& rset honest-service 0
0 N1 z6 D: c# D7 q/ }: y6 `  d, ~  H
1 b" g0 K3 Y5 W9 ^( r
set unhonest-service 0

  q- j! F: Z& Q& l8 Q: z5 n! }
% b4 u- S, j) m+ w  {6 Fset oscillation 0

) m& s$ k2 J1 P0 a; n3 O# r+ z# O# z
set rand-dynamic 0

6 E* i- [' ]8 Z- r) y- v8 u$ ^9 Uend
; Z  t1 n: q$ D$ D0 u' |  h
$ c5 m' @. v: w6 p! nto setup-turtles
/ d5 I* \( }# Q2 Oset shape "person"
& v* p- i& K5 U, p6 l2 Xsetxy random-xcor random-ycor& ~" u( Q2 m* d! U
set trade-record-one []
. Z# g- T5 t& A2 t" W4 x8 O
3 J0 W, Y% e' W& e# p1 K
set trade-record-all n-values people [(list (? + 1) 0 0)]
/ F3 E. k' |" T8 `2 }# G
4 l3 ]- \; B; b/ m' ^' N
set trade-record-current []8 Z- @" Z+ N3 A2 e7 v4 c8 b
set credibility-receive []
8 G  }3 L' I: ^5 ?% n( Vset local-reputation 0.5
3 R- t% q# Z  `3 Xset neighbor-total 0
- I0 W, ]. A. D3 Rset trade-times-total 06 t2 G5 m; j0 S8 T! I4 E
set trade-money-total 0
" W* J; V' i/ r* ~2 _set customer nobody/ |7 e# F4 s. F: E
set credibility-all n-values people [creat-credibility]/ X0 A  F$ i6 j+ d: V9 Y) s: l
set credibility n-values people [-1]
! T! L, K$ @5 B+ i7 Z' M( lget-color
, \5 m4 K: M2 r' J
( T! u) a# l4 v" G) o* r0 Q( Y
end
) e; x8 _! W( h5 q7 }8 i% n! l9 ]4 H
- w- T6 q+ s$ t" N. a7 I6 pto-report creat-credibility
9 Y& h% J" b$ G, Y$ Kreport n-values people [0.5]8 V, _7 U* q8 V1 q$ w; w* x
end. U$ T8 T3 p5 T; i+ }5 s

& D4 f; z; ?1 G. m/ }to setup-plots' I! c  b( h: @7 F& `- h' q

* W) d, o9 h7 `8 x& F; Y6 O* V( Uset xmax 30
  H9 w# R. n! G# C) }
+ l5 f. Q( J1 b0 I+ a( H! R
set ymax 1.0

9 P4 k) h' |. {. ~8 T" @
! s5 `- s- u7 j% W) L# ~- Sclear-all-plots

. l: ~( k  w7 R+ s+ R$ I& ~3 ^: `5 Z$ A
setup-plot1
& U) f( y7 b- I. N. j6 g
0 s1 j: C3 p) m5 B: b2 c: U$ Z
setup-plot2
6 T8 ]. S2 k4 }( V

* T- h# _- _7 P& A9 v" [setup-plot3

3 l1 X: _2 x% T$ G( zend5 `- g6 j6 m- K% R

0 }* @& c! _! }- a( u' ?5 b;;run time procedures
. L' q3 {) R$ s& j
9 N. F8 G7 O+ _: S1 L0 P. uto go9 T8 k2 Y9 r- K

- I8 E6 k& \+ N  vask turtles [do-business]

6 t! }. _% P. c. L. Y- n+ Lend8 t4 o" D6 [, k. w' n5 O
) ]% ?2 \" y- Y
to do-business   e/ v1 U) L1 t# {
6 u3 _8 u4 }* C

% Z& o% f0 ]+ a( w" }rt random 360
5 {, `. M8 U* ?5 Z

, f  }9 A( P% n. Efd 1
6 |9 G/ U$ j" K/ m" [

; D+ t: h& |0 x! R' I3 ~9 Zifelse(other turtles-here != nobody)[

6 {  n* s6 I1 Y% p0 O4 g' `. N( n- @. O
set customer one-of other turtles-here

+ {) E* r* ]$ M( n( d" x2 {8 Q0 ]% G' }* P, ]8 y9 u0 F5 F
;; set [customer] of customer myself

4 d8 U" `. J' \- g2 c3 z- V' G# d3 y; J
set [trade-record-one] of self item (([who] of customer) - 1)
& `  Z! s7 B+ W. S; a- D[trade-record-all]of self# l% j$ Z( o1 S
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ C& n$ X$ K4 Z( \5 }3 s3 T' K* X$ s' h: B& P4 Z
set [trade-record-one] of customer item (([who] of self) - 1)9 C! u" c! R9 V$ @. ?4 N
[trade-record-all]of customer
/ s" e  ~: [% A/ W

& W0 {4 c' e+ \4 K2 \9 [' pset [trade-record-one-len] of self length [trade-record-one] of self

, |/ H( g. d/ h; a' f
# K) m" {) K- t' Y4 u' Zset trade-record-current( list (timer) (random money-upper-limit))

  n& \: I# V0 J  M$ `7 G& |% g' P( U4 M8 G) R! o# Y- _( _$ P
ask self [do-trust]
" Z" c  s9 U* i1 T) C$ O' C;;
先求ij的信任度% w6 R( X; z4 R$ G4 K8 q

* v5 l% ^, p* j' Jif ([trust-ok] of self): _4 P/ m% ]! E
;;
根据ij的信任度来决定是否与j进行交易[! F7 n: t' q4 N+ A* |) P+ t4 F1 S
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- V" g% J: {, F: e* L3 ~

) I5 X: j* c" n1 c, E[
) D* [% s) A6 L5 \6 Z$ `) B" D5 e

, i6 V* O9 d. Z( K1 Bdo-trade

  l+ d  [: G; _5 x2 n
# z, a# R, w; [* e" rupdate-credibility-ijl
; ~0 k  k' A1 f6 a" y
4 G/ a8 n. N, s. N
update-credibility-list
( p5 ?7 R" E, b! j) A

9 U$ d3 U; z' w) H6 D' h! |* W: d& ]9 j9 K/ X  J( A
update-global-reputation-list

3 u7 }/ O+ o% n4 W1 f" ]4 p0 }1 y
poll-class
! {3 j2 `' B; q# u9 ?" f( x

- u- ]( L. R- q# W4 z2 Gget-color
; Q6 A* Q4 T& g

7 Z1 t2 [+ V- }2 S% n+ w2 k]]; Y! y% a' C  c: O- P# K: P) ?
2 Z& `4 P0 t# F; M8 F5 U5 x* A
;;
如果所得的信任度满足条件,则进行交易
- V, a4 D% t! ^1 X2 u- K3 ]: G0 P3 [, C% q. m% o
[
6 j$ [3 m+ T. E" P, ~& Q

  `7 g, L( w1 K4 T: p4 K, [, Brt random 360
/ W6 ~3 |5 w1 u3 N' |. Z% U

1 R0 M3 V" C! s0 hfd 1

0 v' B+ ]) I$ A% {$ j/ A# G
4 r' v) @( g. S  ]7 L) d3 K, r, M]
- o6 A; i, J  M0 c2 X  z

2 _* k4 C1 m0 p  h3 H8 oend

) X! R4 ~0 ?3 d  v2 ]
  T9 T1 A" @5 _; `) l3 E/ Sto do-trust 8 e- B2 k$ G; B+ Y
set trust-ok False: K. t, M( o' n4 k. D! @

  R; t- h: [) H! g  ?( z6 C3 o
9 i6 }1 }$ |# V! K
let max-trade-times 0. P% v" m$ @; d7 Z& P* `; N; k
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- i3 Z. V- V# U$ c
let max-trade-money 0
9 U' y1 [' _0 s+ s) j' jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# T3 P% q' m0 t4 c. K: g
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! h' k, e$ O- i( z( b. @
, i) ^8 P1 W( A  o( a

; O; L" H3 h$ D- Jget-global-proportion
1 }8 m5 d; q/ A, Jlet trust-value7 Z! `/ Y1 u6 k( m, o0 Q
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)
; H8 O, w4 H5 t8 c
if(trust-value > trade-trust-value)
- ~+ f) q  D+ d$ N( y. W1 k# [: |* c- [0 ][set trust-ok true]
7 r* b" h% Y, V8 Z0 v% Gend
% j4 ^. @, Y1 r# s% U! D4 P, x. g
to get-global-proportion
2 S6 h' i1 Q8 ]ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)# v, M& U7 b5 d5 @
[set global-proportion 0]7 d2 _0 I' a: o. E  d5 R! G5 z) `  E6 D
[let i 01 s' J- H3 s. ]6 |6 W2 t$ k
let sum-money 0
& u6 C/ @5 j0 S. pwhile[ i < people]4 E3 `6 k' V* c7 \# h/ G
[
, u2 T+ O  o8 B. \2 Uif( length (item i$ M  S4 w' M! r: |
[trade-record-all] of customer) > 3 )

# G- Q* h/ q5 D/ ][
3 B2 }% x6 \2 _set sum-money (sum-money + item 2(item i [trade-record-all] of myself))8 K7 K5 Q3 k* `6 x
]0 ?9 O$ M! u( ]5 f. L
]8 i: Y" r' x4 l
let j 0
7 K! C* Y+ W- u3 o9 ^$ M3 o3 jlet note 0& m. @9 }( e5 J6 \# t! Y5 E
while[ j < people]
$ j6 ~! P7 n4 T/ b9 D[
7 p3 u% [7 \$ J% g9 Oif( length (item i
6 I' Q. _* D- }) p+ }3 W5 A[trade-record-all] of customer) > 3 )

6 t& J0 P4 E& X, P" _' O[
6 J! v7 a# Q/ q1 @3 N) ]9 uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
: f1 f: k2 w4 d7 _[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& ~- W; }, @& n- ~5 `% x[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' Q7 B# S9 h' A]- x' ~9 n' o  t1 r- u
]9 G- v# G! Y4 Q/ ^. o7 b
set global-proportion note
% X" U( F0 e/ l5 x' U]
- r% H3 P9 l5 W+ B: I! l" iend; \% |  {6 p% K
( x% g! J$ L+ A6 U8 B
to do-trade
2 O6 f' _. K0 Q9 c. Z" @;;
这个过程实际上是给双方作出评价的过程
. x. b, C& S7 e# C1 _" Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 b7 i. j, h' S, I0 Z/ e4 N
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: r. h, v2 O$ d& u- dset trade-record-current lput(timer) trade-record-current
' `$ u/ _3 @1 |6 n4 }( P6 d;;
评价时间
6 o. N0 D. e  I! z5 g9 c( ~ask myself [
) I( r( I3 M) A, mupdate-local-reputation
9 }; _! n% Q7 N2 V9 z* x/ ?set trade-record-current lput([local-reputation] of myself) trade-record-current
5 s( O  O- h; H]  a" J* K+ Q0 A+ d( s! o
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 X% o% P8 c+ Q; K4 l& ?
;;
将此次交易的记录加入到trade-record-one) ^: e1 q' r1 n  {! _1 Q/ X
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 X3 w- z3 J. J  w' @
let note (item 2 trade-record-current )0 e. g! A2 w% @6 I- w$ V
set trade-record-current
% `- n0 P4 W! C& j(replace-item 2 trade-record-current (item 3 trade-record-current))
6 S5 X/ t7 p& k+ r; u7 l0 `( s5 v
set trade-record-current
* b* f! _: m  H, x(replace-item 3 trade-record-current note)
* }1 t4 ~% [8 ^( K1 o& U. i  G. j- Z. ^; Z" \; j# k2 _5 R' Y# d  e

1 H# U/ K) [3 L/ _; x0 F7 pask customer [
: w) I; }+ q. ^update-local-reputation
0 c: S* O* [! ~  R2 q' fset trade-record-current
% r+ K& c: v7 B$ U) e2 p, i(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

5 g4 K, t, h& r]
7 U2 [/ H6 o- c5 N  ^  R' y4 k$ D# L0 l$ ~) H# s
3 s1 X) x1 ?: e% a4 P! |% x
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' b- |, p  ~- e/ F( k
/ s' ?- v# P- e# T4 g4 T
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% J' a1 M; O6 f$ |0 r
;;
将此次交易的记录加入到customertrade-record-all: r+ R" N  h0 m" N5 D5 C
end
; z( i% P$ m  z& c: P9 p% _. V# A* p# g* m2 {3 Y# u
to update-local-reputation
0 B& |. A4 f, r/ Kset [trade-record-one-len] of myself length [trade-record-one] of myself
0 t6 l+ |, q( r  [3 I' i/ U2 ?6 L. q/ I! l1 ?3 [* G1 f& r0 ^
; X7 }9 P9 a1 x# p2 n8 K: c3 d
;;if [trade-record-one-len] of myself > 3
, |- o1 M% s5 ], ]. Y# f$ P: {& t
update-neighbor-total
; p9 Z6 U2 m3 f" H6 T;;
更新邻居节点的数目,在此进行
+ F$ W( ]9 T4 }8 ?. z  v4 ~2 G& ]2 Jlet i 3* A# d0 f2 @' n$ A5 `/ i
let sum-time 0
4 y9 m+ }( b7 R2 rwhile[i < [trade-record-one-len] of myself]0 L* w7 v1 h/ M8 ~: ]
[
, f4 D, Y6 M# }) G0 u1 a# b5 f9 Rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )+ U% Y' j; V# P& c# L
set i5 J7 L: ^. J' L! G. F
( i + 1)

2 ^+ S5 p+ N! f( S1 d5 y2 m]( \1 [8 s3 g3 _3 m; J
let j 3+ X& A: N$ M  I- v' o
let sum-money 0
! ]' i, z* D+ z4 t5 s! @while[j < [trade-record-one-len] of myself]
. ~6 k! m1 x; T# G[
5 U0 U* S+ E9 Xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)/ f2 q8 y+ [2 r8 H+ C& ^  Y
set j
/ D& `8 n& ?7 x0 E. j9 j( j + 1)
- X2 W  W8 \% l
]2 L# L' j, Z$ v( t( h
let k 3; c  B3 M0 m; n( E& F
let power 04 M$ ~" p; Q2 f8 s& ]
let local 0' D6 M( G! c+ v! M
while [k <[trade-record-one-len] of myself]% ]: |2 r$ i$ c5 ~) L4 ~) m
[
7 b( O* Q9 G, ]0 N& |3 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)
6 I+ r1 p$ z- j0 ~3 a  T5 @/ H; q# Iset k (k + 1)" t+ \, F. e6 U4 g
]
# r- p. q4 ]3 N  l" ]. F* b& Yset [local-reputation] of myself (local)
% R- p) i# `' bend
6 m* h! U4 a6 t; K3 r3 n
7 m) Q  p9 A: y7 e6 h( L5 ^  kto update-neighbor-total
# c! Z; E8 I/ m' G" v- \( s  ^! Z# t
% X; F# d  V5 v& h& Q5 oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 R* y3 s, W3 Z( }+ k# @' A
: {$ x( E* ^" x6 P
3 {# N# D" ~; h8 a2 q) M
end
! }( ?" T5 x, h" i3 e6 ?/ @" [1 n
to update-credibility-ijl
- M$ X1 B* b- ?* P7 E* {3 Y" g! u# E' O5 d6 B$ O
;;
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。
0 s+ R7 L" e$ I4 e1 M0 ^+ N. Q: n. tlet l 0
2 f' M4 z+ ]' g/ [. _6 N3 [' r- zwhile[ l < people ]
$ Y/ E6 n7 i9 b3 x;;
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
! {$ z& Q  C3 l1 F[
, @1 J* r8 ~3 S+ U; S0 R. Zlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 h" q0 E0 J1 U4 V9 |1 T
if (trade-record-one-j-l-len > 3)
% c( p! S/ o, d$ X2 a6 D  t[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
8 u+ g9 e1 J. U0 v* Xlet i 3
  K6 `# [6 X: m% h' Alet sum-time 0
4 `) q/ V- f0 K7 uwhile[i < trade-record-one-len]$ \! C) W! k9 P' l# ]7 O8 a
[
' [9 {0 D' z7 g5 _3 v1 w4 ]) Jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ c$ _8 W4 w' e/ f3 u. h" cset i2 W3 Q  _- u' g" a- X. @
( i + 1)
+ k1 }  c* B$ N  _; ?& g& H
]
2 ]5 r6 m9 M6 Y3 Y' v5 o- plet credibility-i-j-l 0
; }6 Z+ Y: W9 r- l3 Q;;i
评价(jjl的评价)
0 N0 n  g( V6 D3 f" Alet j 3, }1 d( q8 C( q! C% @
let k 47 q* D9 I& ]0 z; i8 r- G8 S  @$ ?" g
while[j < trade-record-one-len]
% B+ b& U' r" o  S9 S( o1 O8 i: G[1 _$ ?: |* f6 s8 J( N  |
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
! L# U6 a" n1 V0 D/ I" a1 Oset 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% D: ]. [/ d
set j5 P* ?8 u2 u- @, r! `+ e
( j + 1)

* R& ~/ |  R' Q( m: Z: E]
* ^: Z4 I+ S6 h: \, ~0 dset [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 ))
1 s. C& n# \% a1 d5 q! S' v+ I- v! a, b

' K7 \4 k( R  U( H7 {( Q* F) olet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 n* z3 c) L1 P! h. ]
;;
及时更新il的评价质量的评价8 R- _; b* @& _# |
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
* u7 E4 ~: G8 E# H0 Dset l (l + 1)2 t8 L. b! Y7 o0 l( h
]3 b) N0 l5 l9 N6 ?% a
end3 Y4 O) F: n" D8 p! d/ F

* x' p% Y, Y: e! z. hto update-credibility-list0 |  W! {, E9 b0 n! c! {
let i 0/ W- b$ m; I/ P; A3 D
while[i < people]
* _3 c  M" o" a2 O: b; c[, s' ]0 Q- `, j' q
let j 0
9 i5 @& V% B2 l! p4 p+ Vlet note 0
4 ~7 P7 o' s5 i; c7 {# @# vlet k 03 h2 A% T$ T1 _
;;
计作出过评价的邻居节点的数目0 v" p1 ]& f. R; K8 D: \3 K
while[j < people]
& H0 o5 X- \3 r/ k9 }/ S7 c3 w[
( c2 e* D* g, w' j# O/ z$ mif (item j( [credibility] of turtle (i + 1)) != -1)5 I. A2 D6 h& y. m+ g6 E7 i
;;
判断是否给本turtle的评价质量做出过评价的节点2 e2 {7 v! b7 Z# E
[set note (note + item j ([credibility]of turtle (i + 1)))
' V; `: H2 T" F4 z;;*(exp (-(people - 2)))/(people - 2))]
; s' d/ l  S' N! s$ N' K: @0 _* `
set k (k + 1)
. F3 @: S5 j$ |$ o7 W4 \- I$ U7 U]
' k; C, T  G) I4 X# u, [set j (j + 1)
) @6 S* \. L" e0 D7 v3 `- Y$ L]
$ h. q6 Q! S% z% Aset note (note *(exp (- (1 / k)))/ k)
- {8 A; P- B/ F6 qset credibility-list (replace-item i credibility-list note)- z) k1 W0 N6 _. v$ K
set i (i + 1)
3 Z0 E( X$ \- v3 D; s" ]; N: v) K* K, V]- f, i$ G7 ?- C0 a: t4 O) e
end  S& Z8 k% a+ g; J
# |* F) `+ b/ \/ q5 j9 X
to update-global-reputation-list
  T! x# L$ {. ~8 n4 |$ g0 x! ]" y- vlet j 0
! p6 K2 s0 v( V  [2 nwhile[j < people]: J8 R* c( e( z2 a6 u4 e8 m3 v, F
[
8 m- j" `: w! n" z5 Z2 Alet new 0
! L/ G! ~; Q( W- m2 P& T. U& ^;;
暂存新的一个全局声誉
& q! p: t7 f% d* `9 e5 Klet i 0
1 C9 f8 ^3 F  J. E+ t6 g" x2 H$ T9 Klet sum-money 02 T$ d/ K4 }) P/ C* ^
let credibility-money 0
7 I, I+ W4 Y7 a( wwhile [i < people]
& j: r  D( z2 Z0 Q6 j+ y- F[
  c( o* U/ n# T9 G6 O: Fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 S2 _, ^8 M: j, }. A+ J+ `4 `set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
$ ?5 ?7 H. g. R! x; rset i (i + 1)7 A2 d" n. x3 H3 Q6 A& h2 l
]8 M/ |+ {, l$ Q3 S" p
let k 0' M" R$ @6 ?2 z1 C/ Y6 Z  v4 Q% L/ d
let new1 0/ G0 X/ G4 g1 k. @
while [k < people]* O, @. n: C+ B. o; e/ q5 W* g2 g" U0 G
[, h! W4 U3 q& H/ T3 P0 C) |/ y
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)
, r7 i1 D' b# Q) g3 }set k (k + 1)) b/ u6 e5 x1 W# U$ L
]
$ s, r2 b, X2 q: Sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
/ P; A5 p: G7 c# ?% kset global-reputation-list (replace-item j global-reputation-list new)9 [9 O' t. L& d: t! U6 b
set j (j + 1)- x* ?2 c$ C1 ^5 A# |  i5 t) ~
]9 F( c6 Y. W" n8 I: I/ n
end/ M2 `. B- M3 I  N2 s1 X$ y

- G. V% G/ Z( w& G/ c! b- X/ N7 ?" y8 b4 o

. H& U/ V4 ^6 }% D  sto get-color0 P: ?9 }: U! f! i; o7 |
* b! a: A/ C4 w$ @7 E% l1 y
set color blue

3 D+ m, }- D; R# N& dend
# `) j, |6 i' E  f# D
  i5 t: s# S9 tto poll-class
0 E0 v- }( {' ]end9 z4 R: N) l7 {8 j
* \( r  R" Z+ B3 J8 T, O2 l( G
to setup-plot1
# e$ J; Z. |& ]4 r
9 K# u$ t4 p" Y/ t+ a' M) e9 aset-current-plot "Trends-of-Local-reputation"

$ N+ M: o8 Q  R
# F5 e9 L/ E* N2 P5 ?/ |- x" E( k& Tset-plot-x-range 0 xmax
& Y2 r, i( Q# g8 d$ b% |" m
5 k% ?" a2 r/ e* u
set-plot-y-range 0.0 ymax

* M: l% U6 a# ?3 K- g" ?& U! wend
8 {% P% a7 Y9 m" U2 x6 S6 d) x6 Z6 M+ I  n) B. F; C3 X. j
to setup-plot2
: `: I: v9 I. [4 \  v* I8 x" ?* e$ E; q
set-current-plot "Trends-of-global-reputation"
; H# ?5 b6 r' n( f" s! ~4 e  S
: R7 G" C3 b% O- ?! C8 t
set-plot-x-range 0 xmax
/ ?8 }* ]2 c# q" f3 t: P

( V# ]$ I# J* M2 W& s: Z# Vset-plot-y-range 0.0 ymax
1 C/ h/ D  B# |) n/ k
end
& Y3 N$ ]% [% w: n9 Z) }! Z. X$ p
. H# t8 `+ f" d6 d) f* @+ T, h5 sto setup-plot3
0 g( M% a' l9 f. m% Q5 m) @5 I% M' ]3 h- W  q
set-current-plot "Trends-of-credibility"

; b" Z4 J: {7 Y  R  C
) D! d; H% F7 N( zset-plot-x-range 0 xmax
9 w8 l& c9 {2 q  S) k- z

  b/ J) [3 i6 Z& o$ t3 mset-plot-y-range 0.0 ymax

( E1 I9 D  m. yend( O- N# j, E7 u3 _: u
6 S7 V8 x; g1 n! M$ ?2 b+ H' K
to do-plots" L: d( S0 G* A7 a3 j
set-current-plot "Trends-of-Local-reputation"- W/ q0 u  ?  D4 c# V
set-current-plot-pen "Honest service"
4 i5 e% w3 ]. _' B% N% R; `8 ~6 `3 Tend
. r3 H  _6 E9 Y& a8 t7 P0 }' I" A$ \! r8 @+ |; g
[ 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.
8 O* V- R5 ?/ X4 v& r; \& O) T& _& y$ d
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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