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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:
7 H  P" ?( ]# h. S* G1 fto do-business
3 a5 Q& p: ]- ?2 [# ^; G3 z5 w, ~3 J rt random 360
3 V2 y4 W# K; i  z+ i, C0 ^# h0 X8 E2 h fd 1
$ A: \$ e: n7 Q: U( d ifelse(other turtles-here != nobody)[' c# ~4 t* F4 i
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.) Y8 D, p, S5 l* g" M8 b7 ^
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& v( C+ W' j- v   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: l+ A$ O' ?' \, L1 E  b   set [trade-record-one-len] of self length [trade-record-one] of self, H2 C1 l/ g! _+ J4 n
   set trade-record-current( list (timer) (random money-upper-limit))5 |1 B0 m' t7 P6 }0 A. N7 V
% c' b* ?, M8 o; j* m( {1 O
问题的提示如下:
. I5 I7 {7 [% n( u6 \
& Q+ A+ f2 x: N% M6 e, X9 [error while turtle 50 running OF in procedure DO-BUSINESS0 ~: G# {9 j' q: E
  called by procedure GO" P0 v8 v5 Q4 g7 j% z. X; j
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
! E3 R2 ?! @6 P8 m
(halted running of go)1 U3 ^% V- u# d( d/ L8 U

7 G& H$ A! i7 E2 q9 |7 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~~$ c* }' ^' s+ f) k& ]- 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4 P+ t" d& s# E2 g* A  D
globals[  n- K# ^# |1 M1 R4 l9 s. q
xmax' @  M$ f' m4 y3 o3 T
ymax1 N" R3 [  U" T. s! z) G3 S9 k8 M
global-reputation-list6 I+ s) S' J7 W
$ P$ p. ^; m7 S& U# a
;;
每一个turtle的全局声誉都存在此LIST  J" }2 }+ w. r, _" C7 ?
credibility-list
/ b! ~% a) r: L;;
每一个turtle的评价可信度8 r% \: J( E7 Y  q, t# z% f! r
honest-service# n6 F: B% t3 M$ }
unhonest-service# L$ W" |: j4 x3 D; Q2 R
oscillation
) t. s6 ?: B0 Zrand-dynamic
; Y. \( s+ [; _]* }7 m% @, z4 \( m" w" J

4 _! ?5 H5 {' _: o  l4 Aturtles-own[' g  P" K+ \% L1 o; h9 f
trade-record-all
- G& V9 m& W  i/ i9 r;;a list of lists,
trade-record-one组成
1 ]/ F7 a$ w7 Otrade-record-one
* }: [5 |+ J; R. r1 s9 A0 r;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 R! ^2 A1 V( n8 v% {: ?3 D% }* m$ i
;;[
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]]
! v. K6 w  C( K3 X, vtrade-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 ?3 ~5 }4 W6 e
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
* e/ i2 i+ [: c5 o( dneighbor-total8 |" [5 ?" s% X% [
;;
记录该turtle的邻居节点的数目* |3 I4 \" V$ P2 U' |- U3 t! }1 T
trade-time- {+ s( U+ p) U' C7 \- h
;;
当前发生交易的turtle的交易时间7 s- n2 A" _- w  ~6 m6 m( u0 \, [
appraise-give
: r) D1 c& U1 \! ?& t: `;;
当前发生交易时给出的评价* Q& P6 Z7 R$ N/ |* T
appraise-receive
4 _+ Z% S$ Q% A2 D2 e" _* p1 d$ Z;;
当前发生交易时收到的评价# h( }( O. R6 }% j# u+ j: A
appraise-time
! X2 n9 g  o( G1 b# o/ p;;
当前发生交易时的评价时间
% Q; M* h6 `2 D; ~+ s+ q" W) Flocal-reputation-now;;此次交易后相对于对方turtle的局部声誉. J' K# N& K6 o' p/ {
trade-times-total
# v( V4 F! X6 ];;
与当前turtle的交易总次数1 {( D/ K; c% v  X2 K1 n
trade-money-total
0 `. C. C: e  X) f* ]. F3 W;;
与当前turtle的交易总金额0 S: D4 L/ C, z3 v5 O' [
local-reputation. ]  }4 Q; N# M; U7 U  q+ C
global-reputation/ s6 C$ Q3 @  u& q, D
credibility
1 R/ ~3 Y9 ^& @$ j: l' I7 G; e;;
评价可信度,每次交易后都需要更新( ?0 B2 Q% N1 J, u" j' Y' B
credibility-all
( G/ P0 f- @  c! u: {;;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  v% p& G& e" T6 g9 Y" S
9 x2 ]) k8 B% |8 f" v
;;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
7 F- B9 l1 H- S! h: Scredibility-one9 R! g1 Q/ G2 M" I% d
;;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
  {- C7 Q; G5 ~  I) [; k. Cglobal-proportion
! {6 t# j$ H, p+ D- `. Bcustomer' d$ I2 V7 F+ N' d2 e% N) t
customer-no/ t3 J3 K, u; C! R( e
trust-ok# O# ~7 _+ Q. U$ m  j
trade-record-one-len;;trade-record-one的长度
4 R5 [( D1 a1 K  B) I& K8 R]
) n; Q) o9 V9 C: x* f2 f# Y' ^& K2 I* x% }3 t$ [9 M  S
;;setup procedure
; P4 q0 ~, g$ t( G' N' e3 H' U/ x5 z6 I- `. a8 g
to setup* _" t6 H# U+ C

# O& |. y% V+ W9 m3 I: w) ^& qca
2 L  i5 z9 W2 ]/ C- y6 |. x' h

% u2 w, z" N0 M# B5 linitialize-settings

! f2 s$ T. F- Y9 G# s" u  M, s4 t, e/ q" J3 i; v4 D/ N
crt people [setup-turtles]
; m; ]5 ?% D" N
2 x: x( ?, e% m# G6 w% T6 Y) _
reset-timer
1 R) d" r# R! e( U; g* L  z
7 _) \; p3 C4 Y/ c7 B
poll-class
) [- w8 ~6 h# g. P7 h
8 }- q  g) v3 F0 Q/ J; j) x
setup-plots
' y5 Y. w# Q- l, B* ~* E
8 C; o/ P4 v$ B3 o3 K8 `. J
do-plots
9 C. C% f  u, M3 l
end
! w% P3 j& d: _& x) @  p% ~6 f$ K/ T
to initialize-settings
6 ^4 r! S/ V; M0 w. A2 u- M9 S2 Y$ u2 e9 {" R  T0 G
set global-reputation-list []

- E+ F9 F) t9 R' w
% l' z1 K5 S* {8 W  p8 T9 qset credibility-list n-values people [0.5]
- G, K/ e6 `) u- j

# z) h: }& o' q4 t7 |- s/ j5 w: pset honest-service 0

, D; t0 r0 a6 l4 C8 Q% I
$ b0 ^. a& _1 @: j0 H3 S. b0 @: Wset unhonest-service 0
! `7 M& U2 Q; \' X
; d  S8 Z# Q1 C
set oscillation 0
/ q( c! o( z4 ]* @0 k
3 @) J7 S( o& ~1 q" e! y
set rand-dynamic 0
9 G1 v' z  @6 p5 z$ |
end
0 A6 C5 ?+ x: a6 Y1 T! @4 l7 U  [! |) ^& R+ ~+ Z7 y7 N, V
to setup-turtles 8 Q3 E! [+ H' g! }! i& B' z
set shape "person"
/ s' t7 R+ ]1 w+ l; X# U3 F! Csetxy random-xcor random-ycor. J0 I' S* Z, U$ m6 f4 k4 f
set trade-record-one []
4 _: u! G9 `  Y) g3 }, P, ^  c

. ~" D3 Z# L% N3 {- T2 H" E! K8 hset trade-record-all n-values people [(list (? + 1) 0 0)] 5 r( f1 `% J  Q( x( Z- Z; @

. [6 B& e; C6 Y% H; E8 zset trade-record-current []
) {. Q& Q$ p! Q6 R1 t2 ]set credibility-receive []
; n( h& _4 y( f# W! O) u  Oset local-reputation 0.58 A( D# p; j, |4 a& y5 c
set neighbor-total 0
: m3 v* r, S% q# i8 p+ F0 Fset trade-times-total 07 D, z0 u. n1 Y+ s
set trade-money-total 06 ^, l# G' J' o. M+ _+ o# h& F7 ?- I
set customer nobody
* V7 q% o- Q/ @( eset credibility-all n-values people [creat-credibility]
- Q$ D! X/ b2 J) E* Iset credibility n-values people [-1]$ c. a2 P8 h1 i* [
get-color
. }0 l- m' o1 n7 l" |
( m+ B4 q  w8 Y8 B2 i
end/ |* c& q5 |0 W) i$ q( N: D

; S8 H) u+ ]( I4 y  P# u) V, Vto-report creat-credibility; o5 U: `6 H8 c
report n-values people [0.5]4 a2 g0 C3 i& T6 O
end* M* R+ O: O$ Q: b9 n) e
8 v( A4 ^! ^% a$ ^2 W. e
to setup-plots
! B- z- f: w9 W) o$ _8 r+ r
4 x/ n, f, g! N% m2 B+ d1 G& M( jset xmax 30
; k8 n% Y# a% w- i; U
! I% z/ m' U9 p! f, ]
set ymax 1.0
+ x* u) M( w3 y: t  x2 i2 A! V; H

3 i% b: _6 U2 Z, _/ b0 u8 M4 wclear-all-plots
3 j1 ]$ v! X0 v  ^

7 k% u4 j3 X2 J& H% \setup-plot1

# Z8 B2 {  x( O' O
5 z; U+ T' z2 g6 M6 @- d( C0 g" U& z+ xsetup-plot2

& w2 Y+ d  k! `( d! U0 e2 o: |: M6 O. d! j3 y
setup-plot3

3 }8 Z( a% M! A3 R# m) cend
! ~; @2 Y, u5 @, f  M9 t' N" j! z# n$ a( m. e; n
;;run time procedures6 {7 J2 N6 A* X
/ {6 s$ N% F' j$ u) j& D! K
to go# q( S& B  A" f$ O- r
" A0 w( E( z# I, D
ask turtles [do-business]

: P% Q, M; @8 k" h: Q3 W5 Nend3 l$ y% I9 l! @* V6 o& J2 ?
( X+ O! B7 G- O, j9 U$ ^
to do-business " g3 `" v. {7 j$ c: F4 X

( U! ^. i* f3 j0 |( Q/ m0 h
8 @& j6 G6 A  V& x0 xrt random 360
7 V- W; @8 }0 J5 g# I9 G

% e' g; c. S7 x  j+ S1 F$ b5 [fd 1
. v/ ^. T  a* Y) ^, p6 M3 n3 M

3 x0 B) V( y" L1 u$ o; Zifelse(other turtles-here != nobody)[
+ F8 v0 K$ }4 t6 |2 P8 q& J
$ k/ {5 K  L9 ^5 n
set customer one-of other turtles-here
5 R* v+ V. T1 l- ]' O# X$ n6 |3 b+ N- Q
' s! s* \- b$ A0 L, ]& S
;; set [customer] of customer myself
3 ?( z- h' |3 n/ g- T" M6 R  s

% F, s4 H% B  d! `set [trade-record-one] of self item (([who] of customer) - 1)
& k( o$ D; |5 q. B7 a0 o9 L[trade-record-all]of self
: q' [8 H* z% h! S, M;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
: x# t4 }# J7 y# s
$ o; s8 W3 O" x3 ?. G8 H* z
set [trade-record-one] of customer item (([who] of self) - 1)
1 H' N) N" H  [. z" w( |. e) ^[trade-record-all]of customer
6 V/ V" g7 e8 j- |" c
$ P% x9 @0 i8 T; H+ t, Z/ J+ p
set [trade-record-one-len] of self length [trade-record-one] of self

3 v$ f- }. _. A) x  B  x9 U" z1 }0 Z+ W/ W9 N4 t* o0 n8 Q
set trade-record-current( list (timer) (random money-upper-limit))
! h  [8 u- g2 F6 g5 i

( D. M0 k* i/ }* b9 qask self [do-trust]
, z; M4 M- q& N+ c;;
先求ij的信任度5 Z) o% \: n+ ?, j7 L

# s; ?6 F6 U  G" j" Tif ([trust-ok] of self)) ~3 G; q5 P. f- l3 ]/ i0 B9 T' u
;;
根据ij的信任度来决定是否与j进行交易[
% s3 j4 Y, f' k8 ]0 ]2 ^ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' V1 W; V- R" H
. \; `$ F- u4 ?) D9 s0 K  i0 _
[

5 O  m% R$ v8 q# a0 ]8 f+ P
, p0 {' I& j; G: H& A! d; W, P' H! t4 wdo-trade
: x/ z" Y: f0 u+ v
/ J+ a3 p- Y1 y( S6 p+ x
update-credibility-ijl
, t4 B; v% ], ?! F* K: c
* t; X; c. T/ T" u
update-credibility-list
9 a5 Y- }/ Y. v% L* C* w
; Q* {( m6 A( z! ~4 L

; X; |* d$ V% i5 [: d4 tupdate-global-reputation-list
7 o* x2 Z4 @2 O3 ^/ c* F* p
% ~' U2 F& ^4 [0 b! z" s& M: U; ]4 L5 s
poll-class

; X$ G# O3 V; E1 I+ G8 D6 V) f- Y# q  x  i! `1 E4 g
get-color

9 W! p( ?, S0 g5 Q6 ~7 x+ h# A1 m( ?$ s& G& e
]]/ N: [% \/ q$ ^# b' I

; d' q8 F8 P# z# J;;
如果所得的信任度满足条件,则进行交易1 j# Z% x# E9 p6 \$ B, W
3 O# a$ A% m) ?: d1 e, o
[

5 q: D0 ~5 g% G( j- K
$ G3 b. @$ a; i2 L1 {rt random 360

6 S. X' d- N0 g" _2 V& T. {. A+ y( Y
fd 1

: l' J1 _8 ^; b" b& X1 a
9 P' V# k" X" ]]
: r7 E. _6 K- S

; e3 I$ V% q5 Eend
+ s( h' v  E, ~6 H; J4 J
7 D" q3 h1 _5 w# I: T: x
to do-trust
' f6 d  ]+ t5 p% G$ U1 kset trust-ok False
8 M3 k" a" j2 K; U! A, k2 M( c( e9 g; c) `

. t8 c% X$ |! f. F9 o& }& p( plet max-trade-times 0
7 v! E* N8 k& A: K- A* m! Jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% @  _" A9 x  Q' K# n3 d. F
let max-trade-money 0
2 Q# O2 q* x! j, u" Dforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ z9 Z" o( q3 f5 U' Z# k: B
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). E% }; i0 u! d/ s- m4 c6 W& Y

' H% v& _1 H  S8 u! G7 I+ R
& t4 a; }8 |" S# D. l
get-global-proportion
! Q6 B- K" n9 g. Glet trust-value
, ]3 b" Q1 L3 S/ slocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
7 d8 M" R. @6 i; D3 {: q
if(trust-value > trade-trust-value), v+ [% Y+ M1 C* _
[set trust-ok true]
1 r. Q6 Y( Q: M) b' s1 p- Oend/ V$ }. _. f! s
- p2 c: s0 q3 ~6 l& `5 y
to get-global-proportion
6 B1 Q" R- _" C, }/ Hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 l4 E0 l3 c; ]% y+ l[set global-proportion 0]5 O$ y( `4 }! B, g/ P/ A- X
[let i 0
$ G; L* r1 w/ k- q$ Alet sum-money 0- j; k* g, c. y7 l( g$ J
while[ i < people]
2 E" z) ]  u. W1 p[4 T7 W4 W* X. u! U% ^' Z& S' ~
if( length (item i) M" x: E5 f, Y+ l$ M
[trade-record-all] of customer) > 3 )

( z9 H& H/ N+ N* ]5 l[& F; E6 Z4 @/ o5 ~1 W: {, s, U
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))- F# a" q9 C4 ~; n9 r0 E6 U4 o
]
% |0 L& X  h- Q6 g]/ T# K% ?) E/ e% @' D
let j 0
5 W+ E! g2 p4 o% P0 M" `let note 00 v& O: @1 r% T, D. o
while[ j < people]
9 B2 q' t- e+ W[
/ x! H% C$ q0 D6 I3 o7 ^  Yif( length (item i
2 q9 ?! E; c' O8 C5 O! `[trade-record-all] of customer) > 3 )

9 q3 b: P5 C7 T% E% ?[
$ x# G0 q( a/ C& mifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)/ ^! x- o$ ?& h' D2 S, a$ c
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& g9 d& u7 e1 {% {5 \0 k[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" Z$ Y7 Q$ i, R# }; [( ]
], Y* w: d  n* o; b, h# J5 u9 H! ?
]+ x9 X. n; T& e& u- k7 ^: y+ W# k
set global-proportion note  j" @; ?7 D* _# H( i; T8 d5 n
]) F% m/ Z' Z3 E
end  t/ Y) l( v) Q

5 t$ ~9 Q- ^/ j0 H9 R! T% D: gto do-trade
6 g+ f5 V4 A6 y; Y7 P;;
这个过程实际上是给双方作出评价的过程" `! a0 W6 f/ z' v6 K( I9 g- X- y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" {, K# P3 ~! r7 [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* _) C/ r% R4 C& @) N# Mset trade-record-current lput(timer) trade-record-current+ |) E; n: j  ~3 g9 x5 [2 D
;;
评价时间1 F+ X4 s7 k; G7 r5 p
ask myself [( n- L/ D" l! @" h/ D
update-local-reputation
$ Z) |3 I/ C2 Qset trade-record-current lput([local-reputation] of myself) trade-record-current
: T7 e( X( g+ \% Z: _, J" g]9 h7 H4 n8 v% e
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; t" V8 i. v  J- B1 f* {9 r
;;
将此次交易的记录加入到trade-record-one$ I, Z% @) i$ H! H" u, j/ N0 f5 h
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# s% E  _' ?" X; A; n$ }& c0 glet note (item 2 trade-record-current )
3 ]) S8 ]# ~% C/ J% gset trade-record-current
  J! V  a" V, |4 c(replace-item 2 trade-record-current (item 3 trade-record-current))
4 I- `9 F( I: V
set trade-record-current
0 Q1 E1 ?1 {7 ?0 `/ k; g(replace-item 3 trade-record-current note)* D, @% l, p7 d& K7 z$ g
) }, C$ C2 c0 F# p
5 Y4 M* s# J' V/ m
ask customer [3 `. X) H. l5 }% s
update-local-reputation5 q# C8 L; H( z7 `$ X5 S( A$ l2 `
set trade-record-current. L. u' A0 {5 a- e  [- D
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  X9 w- d; Z6 T% [, A* O+ _]( t" `; B9 h2 K' @

5 ?* d7 L. B+ ]( [; O

! A. O! G/ l* ]2 I) F+ hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 t( `0 j, P. ^. q
- U: @" _" U  q7 w( z( G
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, G8 h3 A, w/ x! i! f;;
将此次交易的记录加入到customertrade-record-all( G( v$ P) B5 i$ i1 h( a) e
end
- J! ?/ o# Z6 z3 Q# l) b8 a; D  l  Z/ i( _
to update-local-reputation6 I2 |. n9 Q* F7 N
set [trade-record-one-len] of myself length [trade-record-one] of myself
! V" Q; k8 M. a5 \+ I# z, [2 I( r! _; E! N& |& H3 m/ x9 r# a5 \$ i
& b1 t) L! A' L6 i4 W- }
;;if [trade-record-one-len] of myself > 3

3 L# h  N" P) K! ?7 x( z" Mupdate-neighbor-total* `# t* D" _- B; `" B
;;
更新邻居节点的数目,在此进行
1 \& ~" p0 q# slet i 3& O( O# U7 p: G; }" D; E/ C4 X
let sum-time 0
' S' \; N1 |1 [+ l- |/ {3 \while[i < [trade-record-one-len] of myself]
  i# E3 X' e/ ]' e  r0 V0 J$ N. r[
& H) B' `, i2 ~& x! C& ?set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 o' g8 a( E1 Q: i) Kset i
4 d% b+ q7 h4 c5 m6 Z( P4 p' N( i + 1)
8 @2 Z0 \6 ~! a+ \
]! S+ Z& S& f0 {7 y
let j 36 Q" ^% a) C) _& g0 i# V# t
let sum-money 0; o& ?5 K  Q- O% D( R, o* v; t; k
while[j < [trade-record-one-len] of myself]
8 c+ z) `7 O% K' c/ H[
8 i; q1 x$ U, p1 Z% H* _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)2 a6 \, y+ A  b6 r8 E# i8 \9 z
set j
- G5 b2 K# Q; }) X7 i9 g# Q( j + 1)
- }9 P5 ~( ^' w* g0 i  {0 s" C: n* j
]; n1 n+ N0 W8 M+ H8 s7 a
let k 3
0 Q! G, N" i+ j8 o4 Vlet power 05 u8 `5 @6 A5 O8 c* ~' O7 m
let local 0
! ~$ S! j& E7 T$ lwhile [k <[trade-record-one-len] of myself]
; J5 G7 S5 \- Y) M3 R[
' y2 W1 t# B9 c; P" K; `/ f8 d6 eset 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) . ^) f" x. e/ m$ R* L% y) ^7 P/ @! n# R/ h
set k (k + 1)+ ?6 O$ s3 d1 o1 v+ G( u) @
]2 d, a% A+ C  N) ^/ U; G
set [local-reputation] of myself (local)4 b- w* B$ A) c; z6 ], a
end6 |7 h# c: I0 D4 Y6 n
. w' `$ K& M4 g' d. w2 f/ g
to update-neighbor-total
) X0 A7 _9 h, \0 b- ~. U9 A3 W2 Q1 J
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 g9 C2 w( f' |& w

0 C( i* T. `  `8 d  J5 G' r. H1 ~
/ |  @0 ?' a4 B6 Z0 M' v- S
end
) [6 L/ l0 @9 y* `/ m5 U
+ g* Y; a5 k7 I1 ^7 [6 Zto update-credibility-ijl
8 {( U: i+ q/ e7 f: ?" z
/ V! y4 a# F7 k1 v;;
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。
6 G# Z9 f3 m4 f: Ulet l 0
+ g, N: j% m# U# g% n/ x) ]while[ l < people ]5 f3 n& o( n% s! x2 _' Z& D/ v! b
;;
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4 x- \' B5 \  U& ~2 {1 U7 Y9 u
[' H0 X* ?3 s! W6 B) ^
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! j4 _+ z) Y, \6 ?1 {if (trade-record-one-j-l-len > 3)$ M$ q' [; _; E/ p9 |% n) O( _
[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
, D+ K8 p" l3 Wlet i 3
1 ]+ B, I0 C- ?2 a: zlet sum-time 09 r7 A0 P; v2 D/ K( T! `0 W0 B0 y
while[i < trade-record-one-len]2 K3 @' Y( g# L$ x" q: F
[. y$ u0 h$ l' @1 T$ b3 j
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" @1 t. H1 x8 p0 y) R% M) E# `8 N
set i! w, t) d) k  o) G
( i + 1)

) Q6 ^1 n  a2 M$ K. Y  u4 [( d. R. t]
. d: u3 @- c' m+ Rlet credibility-i-j-l 0
, k  {" Y& E* N8 I, u;;i
评价(jjl的评价)
# v7 _. z6 K$ O. R6 Plet j 3: R' v5 w. p# |! @" m4 S; j
let k 4
7 ^5 h  D+ N, S  i) Mwhile[j < trade-record-one-len]
# m2 G9 c3 E  ^5 n. a$ }0 J2 R; ~[
8 @+ C6 w  F: w6 |# U. |# ~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6 {& t0 f* R+ Q& I3 j, Y
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)
! y; ^/ Q9 l2 _' iset j1 ~8 y9 i/ `- J  Q2 ?
( j + 1)

, z4 {& X9 P: _/ j% S]0 ~/ q" m# w( @. U0 a. a) ?
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 ))! x) ^# Z5 c- a4 i
3 l% M: r! e7 u* x
' l2 I9 p7 x1 T  X  ^& _! P
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) T7 Y( d4 U- I" r* d/ ~% U% T
;;
及时更新il的评价质量的评价# o7 t3 m8 S9 @. h* a3 N# Y; v0 u
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' E9 R; @+ R/ V/ e7 ?5 |! a  R) p( Nset l (l + 1)
" R) r3 C& t3 R! Z: {% B; B% h]! y: M& H) N* R2 N
end
" B2 ^; I& U, z4 d. S. F2 S5 |6 D; ~4 H4 ?! l/ B" j
to update-credibility-list1 }. F9 r: {, R$ B/ S: Z
let i 0' e' E3 s# k' k3 ], J
while[i < people]# ^& \8 M8 a* T% M1 T- K
[
4 x3 _0 z  |% C; T  X& alet j 0* I. }' p6 u, f( G, L* k
let note 0
+ e- ?6 Q+ T7 rlet k 0
6 [5 r, q4 H% _1 H: b: D;;
计作出过评价的邻居节点的数目
) s' M. {1 a6 hwhile[j < people]
% f" g8 U4 |6 w7 B[. i; c* a3 u& G8 [6 U
if (item j( [credibility] of turtle (i + 1)) != -1)! {1 @, O0 u& Y
;;
判断是否给本turtle的评价质量做出过评价的节点
1 _' u- X! P6 l% r1 y[set note (note + item j ([credibility]of turtle (i + 1)))% {" q5 A8 T, u
;;*(exp (-(people - 2)))/(people - 2))]
7 ~; p% z$ U9 g( B- K
set k (k + 1)
' E2 O$ `! b  z/ Z& h5 w]
" ]% |9 z7 F6 Q) }* }+ l7 wset j (j + 1)7 w+ c% u. H1 F+ l
]' a- K8 ]$ U8 K0 B; ]
set note (note *(exp (- (1 / k)))/ k)) A0 Z6 [' D4 r% e6 r& J* C
set credibility-list (replace-item i credibility-list note)
, P9 [! v( g, f- V# A. ]( N4 B& E9 qset i (i + 1)
$ q# v1 B) c6 M8 A* D. R]- G; S" z  n7 T" y; H- m) S
end
* ]. b$ Q) k# @: C2 z) w+ ~& Q8 q* q  z
to update-global-reputation-list
4 R- u) k0 k& o- q+ a9 N4 l' flet j 0
* ]5 P; K4 E: G5 o# H( Gwhile[j < people]8 n( f* t0 e! R; i+ f) \7 b
[$ {- A) \7 V( Y6 E; X7 k- R
let new 0
# A/ j* t) z' ?( g;;
暂存新的一个全局声誉
: m% ^% Q0 O6 Llet i 0
! G6 @  l3 v& Dlet sum-money 0
& \+ \* A8 v  F: }2 Tlet credibility-money 0: ?# |9 |1 l8 d( Y  x& f* x
while [i < people]
' n# l% }7 C& o. t9 `% }1 v) I9 I% o[% u8 b9 s" L5 }2 c! f% d7 [
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% p% J' i6 ]2 \& V) Q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 ^1 ^% w' x$ O8 |3 c+ m) yset i (i + 1)% O2 {3 k8 C$ H+ ]
]" F) Z" O9 L9 }( V" ^! C+ s1 R" d
let k 0
9 B5 i9 Y/ Y( t/ b1 h( U- l, I: Elet new1 0) _# n( X4 K1 r+ E5 s1 h
while [k < people]
  w! D: e$ W8 j5 F- B5 r% u+ X[1 M8 {! b7 S" x- [0 o2 @
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 T; W) d0 F/ n6 N
set k (k + 1)
" q' a* M1 a! Z( A+ Z. {]/ i7 v* V# l& X5 u
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 Z5 z) m6 k. H5 Vset global-reputation-list (replace-item j global-reputation-list new)% p9 c- V9 z1 p0 ]
set j (j + 1); b$ L  c4 {% n
]
+ c$ g6 s1 Y0 z4 }4 n* o" hend
: M% ^: H* P: ^% S( s% j
: \) ^9 a* X! b0 |1 v; X
) R/ @* v" ]( w; ~5 k( u* j; S. n
" M, N% Q* \' sto get-color: d- S: O6 ^; a0 W0 t( `: ~+ p3 Y
) h4 n7 `, ]6 |; c% z
set color blue

# p+ N. c! e1 t. \# [9 i1 i# nend7 i# L' t) ~8 t" i

) F# P9 R' X; [6 u2 y8 t7 k( bto poll-class) F* {" k+ H6 q
end' j# n/ l1 Y( i1 k: e
9 X. Z- v! b3 {9 O8 @- W! H! a
to setup-plot1- {7 _! J- u- q/ |

* a5 _& `) o% R" c* m/ Q* @; cset-current-plot "Trends-of-Local-reputation"
1 \' ]8 v$ \% H; R9 E2 ^/ ]) i

7 a  e% h' P3 H2 M) ~- lset-plot-x-range 0 xmax

5 b! [, l6 ^# f0 r- j: \5 R+ K6 _0 V& j/ s
set-plot-y-range 0.0 ymax

. W8 l: w2 ^5 P+ j2 L  Pend
- [/ h, |( o' G( v+ t# E( k% D+ O$ i" o  m# t, V* V
to setup-plot2% `4 A) ]$ k2 R1 X7 I8 W2 M6 {

) D/ ?* H7 h7 K; b. a7 R( \" uset-current-plot "Trends-of-global-reputation"

4 V) V5 Z6 L$ W" m! P
3 V6 S% J2 H. Fset-plot-x-range 0 xmax

2 @4 ]5 L2 b0 O% U% y' L$ ~+ w, [. w: a4 }8 k3 ?
set-plot-y-range 0.0 ymax

6 j9 R6 x8 r: E4 c2 {9 S3 b. c% Uend
0 e1 U7 l/ t" W) N' |2 U
0 L( o* u7 c# \! h! H: s' Ato setup-plot3
+ _( ^/ o8 d5 d- m+ `3 T% v/ J+ U9 x
set-current-plot "Trends-of-credibility"

, i0 g9 q0 _# w- t1 V& h3 b
+ I9 s3 N1 z7 C2 s# e5 H7 Aset-plot-x-range 0 xmax

5 Y6 V8 P% i$ s4 @% Y! U' ]+ u
+ W6 k7 v* G4 k# {. a! u5 z9 E3 |% mset-plot-y-range 0.0 ymax
, R! m9 z: x. E
end! L+ b  |9 L8 P8 Q, r  B/ M
8 j+ Q' n3 V2 _( |' R7 X7 Q! o
to do-plots
, l5 E$ l# O% k/ M0 d8 U+ oset-current-plot "Trends-of-Local-reputation"
; R3 ~2 e* {2 e( |8 [  L1 B/ Eset-current-plot-pen "Honest service"! A/ _& W- G, Z7 K1 J5 j( D% Z' B
end
" t  c4 h- f' v$ r' X
% E1 f% \+ V. Z" K8 t3 U+ A[ 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.
6 U6 J, J3 q3 N- x/ N9 x5 [; u' i+ k0 a( U, m9 B
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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