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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:
! w  I+ `+ N# r% i0 j2 pto do-business + i, n+ l! x4 E! J- |
rt random 360
5 r  E# L* ]4 S  z3 r5 a% @' ~ fd 1
; C8 a+ P+ [2 v( L. K  [9 E ifelse(other turtles-here != nobody)[/ k( n5 u" S6 b4 S/ @
   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.0 O1 S# @8 a4 w2 L( j7 a' \6 v
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 U" k0 f* B: h( O" _' L   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" q5 ^7 ~2 m+ H" \2 v& K" z0 N   set [trade-record-one-len] of self length [trade-record-one] of self
. n6 o1 J6 r) D3 C, a* W2 i   set trade-record-current( list (timer) (random money-upper-limit)): \! Z6 R7 [) x' Y6 }4 T( M. i

: d& c, ^. |) f/ c问题的提示如下:' R: r8 N! z, L( Q) s8 T! o5 Z

! {3 G9 {/ H5 |error while turtle 50 running OF in procedure DO-BUSINESS0 Z" d& |# y5 f0 u6 C( y# \; C
  called by procedure GO
" Z% x/ h/ r- R% `OF expected input to be a turtle agentset or turtle but got NOBODY instead.
/ H) k6 q( y8 w& [% D4 C
(halted running of go)3 V- g' Q: J( _8 ~" M
. Q4 B  n5 j- |: B* S/ y% J1 m3 m% 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~~
4 k! V' [% c5 N/ R2 ~* p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# X% n  A! G0 u& r& o$ c3 Z7 t
globals[
9 `8 k7 |7 J* J! G& ~" Qxmax
( L3 V: y! f8 Y9 mymax' |5 M3 f; H  M! |7 l  Q( O
global-reputation-list* Q+ s* ^0 N* g" x

2 }  Q9 ?* c: [1 }1 [: F& D;;
每一个turtle的全局声誉都存在此LIST
& ~7 m5 q2 Y, ccredibility-list' Q. Y5 [2 l. F" E  [9 s( ]. b
;;
每一个turtle的评价可信度  J- M/ W' a* b% a
honest-service7 _- {0 d. h, O5 p3 y- Z) Q
unhonest-service
  w: f$ D, M, A" |3 c4 ^oscillation
/ ^& z5 p0 d; \7 q& w' A9 |: Vrand-dynamic' Q- j0 j/ C  N6 P
]
' f" K' Q6 P5 g$ _  l  b
$ D- Y2 E$ x, x, Pturtles-own[
* h" }5 A2 U+ d1 Vtrade-record-all
" L4 Q# |6 X% b) q7 ^;;a list of lists,
trade-record-one组成1 Z" u8 C, V( V. ^+ N) Z! q3 N
trade-record-one8 l. I; Y4 E9 p* A# O  b9 j0 M0 U: b
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录2 p, A4 k2 U4 {9 W/ k
: L7 c! E) d! j& q1 _
;;[
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]]
2 b; s' n/ E) t2 htrade-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]
7 Y" U: t7 |: H# 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
6 W8 p. l, W0 o" b# G& {6 rneighbor-total
- W+ ?1 x8 O( A7 L+ v+ H$ T( v  v5 G& p;;
记录该turtle的邻居节点的数目
5 [2 l; ^9 Q6 C3 ytrade-time
. Y, o: i" j/ ?6 H& q;;
当前发生交易的turtle的交易时间
: M( O& i" `  E+ pappraise-give
: G7 P% c: s( Y/ m1 [( u;;
当前发生交易时给出的评价7 F2 n' i' C! E) r, T
appraise-receive# t2 b! r- d4 Q$ k. Q/ Z
;;
当前发生交易时收到的评价/ V0 p9 r! Z! g- i0 f7 r; N) a7 e
appraise-time4 K  r4 B" @$ Y' T+ V
;;
当前发生交易时的评价时间
& b& [/ z+ Y9 e' tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ ?  X0 q3 H. [. p! l" `trade-times-total
" v9 g0 v7 v& Y3 C1 R( x! a5 A;;
与当前turtle的交易总次数
0 ^" N6 {# s2 x8 o- q" B4 Ztrade-money-total
0 ]' ]2 m/ [8 n;;
与当前turtle的交易总金额0 G; c( |: `! C* ]! L2 d! V
local-reputation/ |7 X. d! L. q4 a$ ~5 G5 I
global-reputation
, }2 d5 C0 m4 n, wcredibility- O9 E5 p, \* ~/ \. M) X- ^( D
;;
评价可信度,每次交易后都需要更新
7 @) F7 o1 \( dcredibility-all
1 X6 d/ [4 L* j( y( ]/ K. `% 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1 r9 r9 G% Q3 |8 w6 N* Y! m
7 E! b" T- H: @5 j! H
;;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
+ @! H5 y5 t) ecredibility-one% |+ R$ ]& q) E) P. [0 W" I
;;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people0 Z' Q! ~2 }& n3 v0 @3 e
global-proportion
$ k7 {, ~0 h' g! V. Y) x1 ]customer2 t+ ~# ?5 O. n
customer-no
% K) e( H! h* _3 b" ^trust-ok
9 S; V; m+ U& dtrade-record-one-len;;trade-record-one的长度
4 P, c* X6 h- ]- e* H# e]2 ~  U; C, ~. z

% N, H( R, y3 V0 B' F  T) c# [/ n;;setup procedure4 `' h& k0 g. f, A: }+ @2 A& F

5 Q6 z" h/ K9 K7 W' kto setup6 {2 n8 f  I+ O7 g
6 o1 I* I) g' W- m3 ^3 |: S
ca
# {7 \3 t' e. x  p- ?! Z: H% _

; s/ Z$ U" l. _! y  S5 @( Einitialize-settings
+ ?' X& I4 @* ?7 f. }6 q0 i

5 z) Q1 q9 U' E9 T# gcrt people [setup-turtles]
% \! ^+ q4 _" p/ p, j

* G2 a, C( i$ X6 c+ Vreset-timer

* r  C$ l% U* T
$ }$ S$ t! \! x0 ?poll-class
& C0 a) W- |0 l: i4 v
" m4 o4 p1 x4 R: N
setup-plots
; q4 o( L1 a0 O

. J: F2 X% l  X# V3 z& J4 g$ mdo-plots

' k8 `8 U. w0 X* R3 w1 Z8 M6 _end
+ r& u- J% t6 b! E+ M- G+ U. @' W5 J* a: Y
to initialize-settings2 g4 t+ N: K: X" J$ B/ ~3 [

, L! l$ s8 w6 nset global-reputation-list []

& ~& G- w6 b7 S# L" x# t1 ^: N3 u3 o
set credibility-list n-values people [0.5]
) ?. y) _% B1 o' _' u* u, X/ ]

" O: N0 B) {6 z# s8 C3 \" vset honest-service 0
! i3 z( N* K) E; F5 u" W( N
! w) k8 E- C. f4 X5 c
set unhonest-service 0
" P8 c$ J, X$ r- X
# m( h7 c3 E2 H* l, o2 {
set oscillation 0

& k* t* X3 q0 |8 k2 Z$ p4 X
" j( n& Q9 ~% k" p4 t' hset rand-dynamic 0
: L5 m2 f( U3 t% O, N; ^
end
; v9 B5 L5 I( i) I
; g/ q. H- D# R7 I2 E4 d& C# |8 q# |8 pto setup-turtles * x$ C& z) d1 n4 z
set shape "person"
* y9 f, T- T. Y7 ]' osetxy random-xcor random-ycor7 \" N4 g9 p+ t' I
set trade-record-one []6 W7 ]! G' v6 {+ D0 [

5 j! f9 r- I% p. gset trade-record-all n-values people [(list (? + 1) 0 0)]
+ z+ Q+ K0 i) c3 k

3 {" B6 ~! }7 F( oset trade-record-current []' H& N2 v% r, F- h- s8 b4 V# O
set credibility-receive []* z4 M, w: h0 g1 |& I
set local-reputation 0.5
3 K- Q$ l" e/ Nset neighbor-total 0
2 C' J3 H- j" k; \% Q) E! F$ fset trade-times-total 0
- [# _8 E3 o  C8 E! H0 U8 Cset trade-money-total 06 r$ H6 @& w% A# Z" E
set customer nobody
, r* k( Q* |0 Vset credibility-all n-values people [creat-credibility]
* ~( a% l1 E# |" }2 _; C, Jset credibility n-values people [-1]# w: N" z& l8 U
get-color- y8 a2 g' M; G' d
/ Y( F. m+ E. i6 K
end
8 D' B9 a( g. J- ]7 z8 u' @8 `' ~3 E4 F% F) \6 _. l
to-report creat-credibility
3 M  @& b# g- U7 ?% X9 yreport n-values people [0.5]
- n0 y4 e4 s; y& B1 Rend3 X: {0 ^0 h5 ~' K9 ?
( M1 U: s5 C1 |; I- J/ t7 T
to setup-plots) z/ q3 Z# M4 u* V4 z

7 B) [: S  f: Cset xmax 30

5 Z$ ]" u; i9 m. H. Q. s5 m5 Q8 R' `) M9 d, R$ k6 X8 J6 J
set ymax 1.0

! ~1 y( S- p* K" r1 E% U8 U9 u9 C% C+ b5 l8 y+ J
clear-all-plots

. M  h! F. d; i2 o, K8 z2 U% q% V$ P3 f- y0 z) ~
setup-plot1

8 \6 G/ g/ e- w' P" E: o" D8 t6 i5 \# n: |$ m* @
setup-plot2

0 ]. H2 ]$ a0 N) Y; K, p
& u) u6 O4 H; Q* p* Q2 tsetup-plot3
: u+ I/ x; j* K5 h# q+ s
end
4 ]- W3 I" [2 ?* U  o: R" I9 z( W5 m0 I; Z
;;run time procedures9 `, E# n2 }8 \  v
' h% b; r$ p' F# ~
to go
2 f& Z( T% d. E% A( Q" \# T
4 x! c5 b) l2 d+ p) e1 \ask turtles [do-business]

& k* u* X! @$ u3 F, Lend
& Y0 g; x+ {% k3 G: d3 x+ m( F4 _/ ~' h5 G$ ?' L  g# H
to do-business $ E2 X" B- c5 s2 T" {0 m
& D& V: g. Y% }& f5 D( P2 `5 m) s
8 p# x1 d  A' O
rt random 360
0 M+ ~1 b0 \5 h5 o' k- S( \
' |+ y* s: ]% `* O
fd 1

- X1 Q+ {; |- D7 `" d; |) ~5 T% I# Q6 i+ r/ O) A0 k4 p
ifelse(other turtles-here != nobody)[

( B( u) W# d- v9 P) F$ N/ F$ f  Q3 J7 w/ K5 z# `
set customer one-of other turtles-here
2 q( p7 H9 T. B1 Y7 k

  a. e+ R8 c- u; c5 A1 z' e, d;; set [customer] of customer myself

8 d1 A0 v$ o+ V$ o4 B
7 `& |& a- C. U+ E5 S5 fset [trade-record-one] of self item (([who] of customer) - 1)
8 Z8 [2 k$ r$ B& Z[trade-record-all]of self
& m5 w  m5 \% E8 u+ v;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 M; U& l1 D+ p( I9 c2 Q6 o* F) ^0 Q* L' V# G, t
set [trade-record-one] of customer item (([who] of self) - 1)" n' p  s% A4 m* b$ O9 i8 c/ Q
[trade-record-all]of customer
3 o- u$ H( C0 f$ a1 |1 ^

: W# ~  z7 ^- x5 S- c! A: ^7 qset [trade-record-one-len] of self length [trade-record-one] of self
9 o3 B& S0 U) a+ X) m

$ V) S: p- O* T8 e3 q" r' Oset trade-record-current( list (timer) (random money-upper-limit))

& S" V6 W; c$ W8 S' C& \+ ]. w
$ O6 O, O3 T' w& Lask self [do-trust]
) q" W, o5 ~1 ]8 X' w' h0 I* ~;;
先求ij的信任度2 i# \- J# _8 v- Q4 c9 f

/ s/ s) M7 |3 `- |0 c7 ]+ q  Qif ([trust-ok] of self)% f* b2 ]) W1 H, w$ t% a) D
;;
根据ij的信任度来决定是否与j进行交易[
9 x8 O- L! t6 M' Q( oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 f( J! q1 B, }( l5 k1 x

# r) Y8 n' c+ p[

- }. x/ C( M# K' h4 Y0 e% N
- t) A- @3 J+ X- S/ Q! cdo-trade

5 E. h  F- p9 a2 E# O
9 m# u# n2 g+ [: u* \" N: c% iupdate-credibility-ijl

: ^3 Z: I3 W  i% v' p  ]$ }8 }0 t9 Y  K; b0 o+ V/ Y
update-credibility-list
, a/ C, f. |4 |" B) N. E: I
5 J6 G" K# f8 R# J

& i; H' F+ Q; W: t" _$ n( [update-global-reputation-list

- R/ R) y: N' r/ W, b0 J0 @: L$ G1 e* J& {, F& I5 R
poll-class

# [( f# `$ Z  V5 A
  q6 v# _3 h# w# O0 oget-color

& l: j7 Q! O1 T, n0 F+ _  X) c  R- j: j+ y
]]
% |5 F. w, e  [) G) r, V5 k
: s+ V/ ~7 [7 s6 U; T% Q;;
如果所得的信任度满足条件,则进行交易
, C0 f/ I. L/ M* d7 D$ x
# W6 d5 C6 l8 d[
: I  n# R) X. d  ?, k

2 G( h0 i( Y2 i. z/ Krt random 360
* @% a4 Y: q. o# \9 V( }, c
# T; {0 f3 k: o9 l) v$ j
fd 1
5 ?4 W/ \1 l% f# c( ?! e# I% H

" W5 O% j2 A% Q  d( }]
8 N8 A* O  s% r# o0 U+ k. p5 {4 p

# j( L6 a' ]! z. u" Jend

2 \. t/ `3 }" Z! W7 j' z; }5 A
8 v% m' L: U3 L, q( g  n1 t/ G& e) ato do-trust
+ Q& Y4 Q. x. Wset trust-ok False# ~0 Q$ _; o1 T9 l
" \" p$ m5 D, T: S( |
% t2 \  v* e9 i! E' r  ?/ |
let max-trade-times 0
( h$ y0 T4 _) y; Y2 M, X) D) {foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% I$ o' B* A& s* S) F/ }let max-trade-money 0
/ f) @3 A9 N0 O9 W4 C) Wforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]! K9 X' ~9 F) t7 m2 M0 z) d5 {: T
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ D+ {% F! J/ _! i3 g$ S" K
$ S2 R1 ~) t, |7 y* ]- l
, S  y  T: W* `+ s* ^/ |$ _5 ^
get-global-proportion4 W; j2 l8 S' l6 X4 g
let trust-value; A3 R$ i: ^2 S1 {9 f
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, |' _- t" v( ]
if(trust-value > trade-trust-value)
- l+ F5 J; S. B( F: N; P[set trust-ok true]9 @# _6 N* _. t7 F1 s+ y; F
end8 e* l! F. s% Z

# S% H+ x) T/ K1 X6 K4 [to get-global-proportion5 O+ r1 g4 J0 J. l+ e$ _
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- O. U1 N* p5 d" s/ R% O
[set global-proportion 0]8 `5 T7 g& F# h: L: j9 p
[let i 0
9 L/ ]  ^& ~9 U$ b/ clet sum-money 0
3 {: v* i) L3 X8 g3 L' K( ]7 Pwhile[ i < people], X6 T9 O" L  S8 ?1 ?& F, S1 s( g7 x
[8 Y! c8 Y, [/ c6 g, M) s0 V& C
if( length (item i
! e6 w, s' J% K2 `* s" X3 S[trade-record-all] of customer) > 3 )

- X% d) T; l; j1 M[
& p+ j/ n; G- o) eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))' m+ Z8 R; _7 d) g% ^0 U
]
5 G6 p' ^  K- Z; L]+ S$ z9 I- B8 [3 G6 {7 A. H, K* w8 {
let j 0
( F; `  ~: d( I# Ilet note 0
; W) B( o* ^$ x& jwhile[ j < people]
( Q) D' y! \3 t" a7 Z& X( t, S[( ?9 e4 X3 L5 w8 H9 \. G5 Z' N! [" ~
if( length (item i
7 u7 c1 @( \- Z2 ?, I. `$ {6 ~- r/ y[trade-record-all] of customer) > 3 )

' j( X6 h  ^0 [( M% l* V[0 O! |; W% g1 X* Z" i- x
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 m; S2 N3 N& \6 k: m
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 ^, Q4 K' y9 x3 c4 }
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% ~8 ]% S" [1 f) _5 I5 Y* z; X0 I) M
]
- Z9 J% Y' S! w# R7 v]* j# ?+ y, ^" T( {9 P# _- _4 V
set global-proportion note  r  q& A& P, b$ ^3 i
]' P7 H) A( g  f2 C& f2 x
end4 K5 s! I+ P3 |
0 d4 B+ p3 P! F$ @
to do-trade
( a+ Y: f: g+ A6 n% x9 D;;
这个过程实际上是给双方作出评价的过程
* H0 f8 y& w- F: _7 z' m0 Z& Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价# _4 a; e! @9 c7 `1 |1 U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
, p9 _" Q9 w) z/ e6 P' Mset trade-record-current lput(timer) trade-record-current
# i$ J: Y7 H* e% _4 h4 y0 Q;;
评价时间
% c% V$ J# b" F( gask myself [2 k9 |% T  _) [! l1 d
update-local-reputation
( O3 J1 Z1 ]% n5 X9 ]2 Wset trade-record-current lput([local-reputation] of myself) trade-record-current& r. _4 p6 u: X7 B0 O, h& g
]
& z% \. d) I; n& U9 V2 @2 Uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: d- |/ `# N5 X0 L4 z9 l
;;
将此次交易的记录加入到trade-record-one
% h' l$ L  F: \& Bset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
, q$ \" E0 h/ U; l$ olet note (item 2 trade-record-current )
' s2 d" g9 T. ^% oset trade-record-current  p. k8 l/ `5 n
(replace-item 2 trade-record-current (item 3 trade-record-current))
; Z! v1 C& [4 s  s4 z) L9 \8 F
set trade-record-current
' m- t- [& v6 W% z(replace-item 3 trade-record-current note)
3 X$ I7 h$ e4 j
  ^8 c; V# y% n& T8 h( m: ?2 q
* t+ j3 Y, _; \9 _) o
ask customer [( s& C0 U8 O, c3 ^" u0 ^$ g) K! h, J
update-local-reputation! h0 e5 R/ H7 D( i$ |/ ?  ?  l
set trade-record-current* P4 W! V* _# d0 A0 q: `; q
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; j0 O* A* z1 h8 Y: d) b) i
]
, k0 M) S' E" \- l6 s& R0 D( f' p

& H9 [/ _: }# ?3 E9 Pset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 N2 M( q" I& Q

2 w* X: _. g# s* ^- {1 E# ~' Nset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 g! h- k5 Q4 K3 x;;
将此次交易的记录加入到customertrade-record-all( K+ y; [+ I+ i5 Q
end
; c$ u1 o: V- T% J  F  ~. h8 m0 K  b# [  \, k/ y0 L# \+ H! ^
to update-local-reputation5 r* V5 H. ~, o7 w$ {  Y
set [trade-record-one-len] of myself length [trade-record-one] of myself  Y# W  s; N& B: o
! Y! I, v6 M/ F. Z# J; M
$ q5 x- D+ M% d$ ^- i
;;if [trade-record-one-len] of myself > 3
6 h7 `, R1 s; S. \' `8 g( d" A' Q
update-neighbor-total
, f' i+ D2 V  t$ K1 \;;
更新邻居节点的数目,在此进行( y3 F' W$ T8 n# o+ q
let i 33 C( \* w8 ~$ W0 q1 M2 i# c8 Y) U! N
let sum-time 0" X" y( A4 l- B0 E$ K& A& u+ x
while[i < [trade-record-one-len] of myself]0 a$ O9 [# D' v
[! h* h- f% j/ I- S2 M4 `/ \' C
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* K8 Y- X+ q5 p& Y0 ?, V
set i; u# M1 H1 K! q4 E9 m
( i + 1)
' `1 e4 r2 z9 f9 C: \
]
# r& q4 `  D1 N& F, ]let j 3
" o! g4 x% [( Qlet sum-money 0
$ q2 n) ]% i( G5 Y% F% Q0 F. V1 Gwhile[j < [trade-record-one-len] of myself]5 V/ I$ y' ^& `. h4 e
[
5 S. W8 |8 e0 z5 M8 nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
5 s1 Q3 Y9 V: T0 h* eset j
5 M9 r: |+ q. j# G- _' L9 R! l1 Z( j + 1)
) C. t2 F) F0 O6 N, l$ n
]1 F; L- K" F: m  D* H
let k 3
/ ?/ x/ c( d+ J9 B3 X) Vlet power 0
( @) s5 a7 k: M$ m# K) W- ylet local 06 h) N4 x' s- m8 j& `: ~
while [k <[trade-record-one-len] of myself]( W1 ?3 \/ t- f2 h& k+ r
[
; O; z; Z/ w. Qset 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) 9 g3 @! N5 h3 K* _7 {
set k (k + 1)
; @$ S7 J: v3 t& D]' T- M8 _$ \+ s7 n
set [local-reputation] of myself (local)& E% {/ n, O/ Q
end
: _! T7 w6 `) C$ o! _* _7 Y+ t7 S8 _( l8 h: f
to update-neighbor-total
7 w' k- _2 r, t4 a$ f2 X
8 T/ Z, U% L9 Cif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]1 s0 C3 P: L5 g/ z+ R" @. `
: s* Q1 M) W9 \- s

# f( E& r2 X4 j1 }end' e6 j' {& K. ~9 @8 Y% C- S( j
) j6 x$ b* z$ h- A
to update-credibility-ijl
3 p- D3 ^; `, k. I; [8 p7 I$ M) Q9 k+ n! T; P# v  U& t4 L; w
;;
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 q! J/ _3 u% M/ z3 q0 Xlet l 0' Z+ B- L& _% z4 d; W
while[ l < people ]
/ b6 J+ [7 k, ]# e8 y5 [+ L;;
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; i4 v5 v0 A, }4 m; H; f8 w
[
% j7 A  `* R  J3 Klet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) P& z+ S% B- t& xif (trade-record-one-j-l-len > 3)8 ?6 A) `% R2 b4 v: O; e1 s2 P1 o5 F- 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  }+ u; ?( U2 b/ G
let i 3( l! _# s6 v" v. q
let sum-time 0! p0 Z% ^, x& \. C6 v9 t+ u
while[i < trade-record-one-len]
& ?0 \0 L3 b" b( O# j  c. v/ @: d( h[9 P2 Q3 U  r* o/ U
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 k% }6 A3 L8 F% L  Zset i3 q8 u0 S5 }1 k+ s+ t2 p
( i + 1)

, a# U& z1 m( Z]$ Q! |- Y# w6 V; _+ }  U
let credibility-i-j-l 0
! Q- t0 R& v) Q0 B+ P# F;;i
评价(jjl的评价)
$ I# S, z3 b/ @2 K+ a$ wlet j 32 Y$ b: j5 v2 p& m, y1 b" L
let k 45 J! j, n4 s/ L0 i0 n
while[j < trade-record-one-len]; f! y  l4 q, v3 z
[$ F4 L' |, E: `) 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
) }8 y/ O" }( a4 L: W) n& Kset 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)5 ]; z2 z/ _, f( _) f
set j
7 O9 @* @" {7 w8 }6 G3 K# G! S- c( j + 1)
0 ~2 G8 a# ^8 F% K! y8 _8 l2 h
]2 X% U6 G# W5 G1 l4 z) N. r
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 ))& ^$ x7 G- ]/ q( |) t' t4 s& {
$ w6 W9 |* ]% m( J

& }5 j. p  h2 ^1 o& l! p$ ^let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ e. U; q, \( x/ H
;;
及时更新il的评价质量的评价
4 t0 t$ @1 [6 J, X- d1 N1 Iset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  l; d7 n+ P0 B, T
set l (l + 1)
6 p2 N  u  M: ^]1 P* K; h& U4 M( }) O& J
end
3 L# U0 }1 @+ y7 {6 @& r0 {, a. C1 A" F! H2 u" I" ?
to update-credibility-list6 x$ ?0 L( g1 \! s9 K0 {+ t! Z: _* i
let i 0
3 Q+ {- K- ?4 T' v- r) swhile[i < people]
; g/ r# a, F" X( }; X[
) R9 L' _3 \3 w. b% olet j 0$ {1 P/ Y0 h- ^0 M" p
let note 0
0 q/ p9 i6 ^2 b4 Plet k 0- @4 B, k/ E7 H! `" w+ c! L
;;
计作出过评价的邻居节点的数目
5 i1 l1 D. p' Y/ {, O+ n$ Bwhile[j < people]" @* Q$ `2 ?$ e: Z' r
[2 Q* U/ I; \! h. |
if (item j( [credibility] of turtle (i + 1)) != -1)
" s! b/ X. H  D/ L;;
判断是否给本turtle的评价质量做出过评价的节点9 c4 ]& ?0 V7 e4 ^
[set note (note + item j ([credibility]of turtle (i + 1)))
- e2 `/ P3 ~) X;;*(exp (-(people - 2)))/(people - 2))]

0 V& k( _7 [; B* p! v) eset k (k + 1)
. R$ L" g: W/ x7 s: }  S. {% t]
8 @! v4 g$ k# b& ?( |+ a* i, Gset j (j + 1)% k8 w  o$ z' ~: b- Y2 t7 |+ g- d
]
1 G' I) Y$ K% [5 rset note (note *(exp (- (1 / k)))/ k)
9 ~+ ]9 ]0 u) s4 dset credibility-list (replace-item i credibility-list note)7 G- `" \* R. t5 k2 Y' N7 e3 f
set i (i + 1)
4 r# ^9 E3 H4 i% f. e& n]
8 F9 {: I3 D$ R: G2 A4 m3 l; U8 Zend
0 s* s# U3 S1 X! |3 A$ |2 C: X* `! U) ^) \
to update-global-reputation-list; w( ~$ |4 O: m8 ]$ Z& x
let j 0: Y1 \0 ?  }8 b8 B" i5 R: L
while[j < people]" D. O' c  T& `6 E: Q
[9 ?! D/ x: D! z- _
let new 0/ }0 ~" g( P5 u  U& I9 k) f: N% A
;;
暂存新的一个全局声誉, X% _3 R3 l  e; J
let i 0  y! h' o$ T$ H& I
let sum-money 0
/ E9 x8 f4 N0 ^& O' z; ^let credibility-money 0& ]$ l' I$ P$ I& M. }6 w
while [i < people]( l: R2 z! G- ^" b2 h
[+ d* ]  \) k: d
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 Y0 w5 Y0 {2 i) o3 p' r" d
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). N1 u( d5 X$ v) c9 a0 {3 N
set i (i + 1)
% F1 B' O1 J: a1 m6 ]# D]
; q1 U* \! c3 X; x! C  Tlet k 0
$ g2 e* e0 M5 b( ^3 d3 [let new1 0
7 d! Q7 p( k$ T2 Z( q2 E% V8 K( t' zwhile [k < people]
! P$ o( j( Q! O[
- O% W7 y7 Q/ qset 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)
8 E: _8 x0 u, A6 I" W$ Mset k (k + 1)
! z4 c5 r( ]! s& _( e* X  Y]
3 Q' ^3 I4 t$ R, x% @, U, G- Mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % m0 k  Z, i1 }9 N" D0 L/ L
set global-reputation-list (replace-item j global-reputation-list new)
+ v& B+ p" h6 C- g. q! z0 Uset j (j + 1)
! A# x' `8 y0 y6 z# U]
1 w/ w1 |+ B$ y- C5 o5 ]/ Mend
  `; ~- P+ ?- S3 W  T& A0 O
! x: C5 f+ K( K! \" |' F4 c# w
, Y/ L+ r; o0 t" ^9 x7 d" e9 s* o. z5 S/ Y
to get-color* q7 X2 g+ R0 N

9 m* r8 Y* E9 S0 `3 b- `7 H+ Z- Uset color blue

) y0 ]9 f8 p8 b& w% N, t) Zend# J- I6 n, J8 w$ k+ H; j/ y2 I

$ n, y. i) |6 T: q4 F) G5 E- G) Eto poll-class) Q! Y5 L- v! i" i' c
end2 Y  A4 G# O7 T9 _' I5 [

6 c( i: P( k: pto setup-plot1
9 C' M* x, `4 `5 L2 {9 U
2 Q& o- a' @# l- N- a: w  Nset-current-plot "Trends-of-Local-reputation"
5 L( d; Y# S& i6 @; D1 s) c

+ y8 R, K" W, E( v5 b6 S5 Lset-plot-x-range 0 xmax

$ ^' f5 o; v) t! a5 J3 f$ O7 ^% M
0 h& [( [( k, o/ Iset-plot-y-range 0.0 ymax
8 F9 s9 _4 g& h. \
end* X4 Y" B+ Q9 ?( E* h. p
$ l7 x* H7 T9 }# S+ H
to setup-plot2
/ f" y3 A# F5 H% K. o; }2 t% F! T7 Y1 Q
set-current-plot "Trends-of-global-reputation"
  T" E1 V" v# H& n6 W
, x( A+ A3 D5 N7 |, q
set-plot-x-range 0 xmax
' Q$ H& X2 v* L

- s  N3 t0 j4 E- tset-plot-y-range 0.0 ymax

- q$ C" _. f9 U: R1 vend, S* A; T9 j8 d5 J# e% K1 L
/ g/ X4 X4 U0 [) A3 J0 s4 D8 T
to setup-plot3( k& e, [( i8 e- K0 I2 p% L
$ R3 z# @! T! c1 z" O
set-current-plot "Trends-of-credibility"
3 w5 `; j; `4 e- }' L0 f3 B: S- {
  W) O+ R& `! i( S5 d
set-plot-x-range 0 xmax
- n) H( s6 n3 p$ {3 ?

8 r, W2 N8 H0 j2 H! ?% eset-plot-y-range 0.0 ymax
$ I3 u4 c/ @: ]# e
end, q# m5 t8 }7 }4 l- i+ W8 \! i
) o4 W: J# h. W6 u& @1 p
to do-plots
' C- [0 p* Q$ oset-current-plot "Trends-of-Local-reputation"6 i  b1 p% |, ~
set-current-plot-pen "Honest service"
/ H; K. Y' i8 s, _5 \% {- L% oend
1 O( F" X% r' F7 u/ C* i2 `( o% @3 Y' l. O7 A8 t. x4 A! d
[ 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.( y$ U- W9 q" T$ b" @  ^) F
; U. Z- r5 j+ i+ Y4 i8 x, F0 Y
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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