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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:
4 ?6 J7 c* u: Ato do-business
9 v5 k3 K1 {; `5 D rt random 360  b3 X1 O0 E  V9 F: j$ c
fd 1
+ m0 d2 T% }) A# z/ G8 { ifelse(other turtles-here != nobody)[/ ]8 R8 q2 q( @; h" l0 t0 o
   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.
( x$ h" ~" p0 q' F   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 P* g3 [7 m' s
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! i6 I7 B9 K0 p
   set [trade-record-one-len] of self length [trade-record-one] of self5 k9 M4 M( X4 {+ F. i( K: ^
   set trade-record-current( list (timer) (random money-upper-limit))
9 ]' |& |( v( C& r; ~, s
) x! q$ x/ {3 Q/ w) V- ]2 ]! _9 S问题的提示如下:+ d) q' N6 C% l+ R5 \7 [3 q" H0 K

7 P! N0 w9 U2 x! R" rerror while turtle 50 running OF in procedure DO-BUSINESS
  P, T& \, M3 o0 r  called by procedure GO
' G9 V, Z' W) @) ?9 f& f+ @OF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 m5 w9 ]' v; b) q: L8 k
(halted running of go)
& \! n' h1 n4 r: l& ?- L% O
, ^: V7 A0 |; c, M' B- K) D1 x/ 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~~+ Z" W/ J% Q9 N* ^" I6 f
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教9 t+ z$ a( M. B+ |
globals[
* W$ \6 C$ y( U( d' u, f+ fxmax7 t; }# x* M0 I% A
ymax8 m, q- B- T' r) P  N
global-reputation-list
) h4 k1 q" A& x/ b$ J6 j* E* q0 I
. k4 S; o; l+ {. e& p;;
每一个turtle的全局声誉都存在此LIST
: J8 d& G3 F- c) I7 @7 vcredibility-list
. a" ]# _' [* e: N;;
每一个turtle的评价可信度) X( b/ `5 H. b) z4 @6 K+ h% S# Z6 k
honest-service9 ?0 P2 P0 D9 c+ r* P, Y# b  B6 P) n
unhonest-service
5 _& |: e) K) K. L6 F* d" ]0 x+ xoscillation7 E8 i5 w$ J3 v7 {. ^; u
rand-dynamic, v! l, n6 [7 ~: O$ H5 Z
]
3 {* V5 L$ V1 `  j9 X' X
* N  [1 h3 q- f9 q+ a4 Gturtles-own[: X( |3 h( j- B
trade-record-all. x8 [+ H6 u1 N, i6 E
;;a list of lists,
trade-record-one组成0 a. U  C& I$ ~) t, q
trade-record-one
- t( |8 S! k! V;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录, S7 i2 h  L, M
0 I; m* h' K" w# e
;;[
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]]8 A: A. \; X. n9 v) P' r9 k5 n
trade-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]
, I3 o5 i4 v# T8 t% z; Dcredibility-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" R5 a9 p9 F5 c9 j1 z) r# S  |
neighbor-total" C5 ], c( P& S6 A
;;
记录该turtle的邻居节点的数目1 e7 M4 o! z  L( b$ C6 P
trade-time8 P/ l( \2 x) |" W) b. D; `$ @5 T
;;
当前发生交易的turtle的交易时间* g1 Z+ f( R. R$ D( ^% L% y  {* }
appraise-give
8 Z+ ~' {8 h( @# p( O" T5 G/ a;;
当前发生交易时给出的评价+ N) |/ z" O" j9 f# K
appraise-receive- {' }9 |- [9 }; ~3 t, n+ S
;;
当前发生交易时收到的评价4 ^8 |6 q( y" |' K1 u$ }
appraise-time# L4 {( m0 `/ q$ N9 z3 |
;;
当前发生交易时的评价时间/ u: Q: [9 c1 ~, I
local-reputation-now;;此次交易后相对于对方turtle的局部声誉- H! Y- L2 }: h
trade-times-total3 x! C. t# P  z) ]" `- X% N
;;
与当前turtle的交易总次数( B" H0 \4 Z6 h: ^3 O* H3 j7 Y# b, b7 x
trade-money-total
$ k8 Y3 B2 J$ ~+ O, i& X: X2 `. F;;
与当前turtle的交易总金额8 p' Q$ v  e) ^: n2 b& Q% E- B
local-reputation" u0 ]/ r0 H" L6 m
global-reputation! D# ^% ?3 m1 n4 C
credibility
6 \5 j2 e) L& l;;
评价可信度,每次交易后都需要更新+ i) ]1 [: B# D% _% g
credibility-all  Y0 S9 Y$ m1 A0 J$ W# k) T9 r6 ?; o
;;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: f# h. r) c' L: C2 h9 f) Z
% ]1 @7 ?% o: @. }! i) ~
;;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
9 ?+ _/ L7 F( L# K% P# {credibility-one! ^" K# E# |- d; X/ p
;;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
5 H+ V3 j+ c7 L  oglobal-proportion
( T+ P8 v4 z: y- Jcustomer/ [7 H# O6 c( ~- V: V0 b0 f
customer-no: m% j" L: m- i) B7 ^3 W
trust-ok
( i5 s8 x! r  d* ]# w! |" dtrade-record-one-len;;trade-record-one的长度& i8 u& }. I  e
]
2 ?2 m8 N# M5 n4 s
" ?  }# H8 s( I1 o( Y2 v;;setup procedure! Y# D- j$ z/ U- J- ?3 w( x
" e. K3 I2 k. F' [# f2 A
to setup) @9 @/ }; s. |; |) B) T7 M

: z' `+ Y& L+ m( H3 l" @6 p* Bca

  J' |  Y. J! _) }+ }8 [+ x
8 y5 |# L; H7 {, `3 f- `initialize-settings

+ F  \/ T0 v  L/ h% L; k) N- x
2 r" W1 p$ r# I  b5 N$ u2 T' kcrt people [setup-turtles]
. X3 K! K8 r" e1 D* p& {
. {" A# X; c% A$ |8 u4 ?
reset-timer
- l  E# \! x. d& I0 `1 v
& }2 K$ _/ s5 N
poll-class
7 v. e1 i$ E3 E3 [; H8 H+ e- e1 Z

, [) N- f- P" W2 _6 g5 [setup-plots
0 a3 F3 n5 d8 E! x

- r2 s! ~3 ]. Z' Mdo-plots

, z  r" v0 N- C0 t9 }9 c( O; rend
. ?: J% z4 R+ z$ c$ M' O+ x8 G6 S# A0 E) r2 b/ `" u+ O
to initialize-settings( A; _' H1 l6 k4 T  {8 `4 W

6 a# C3 l6 f& hset global-reputation-list []

3 V( |% q7 Y1 B: H) I6 ]/ P3 w% F8 {5 C  e
set credibility-list n-values people [0.5]

5 J" R* I0 b/ T4 Y& _) o
" ]( q' ]' s  k: d- Hset honest-service 0
5 U1 c# f9 n% A' u
0 s. i( g) X/ p+ ~; ^7 A0 O
set unhonest-service 0

* ]9 x5 ]$ z7 R( \5 M8 b" K0 t" E; Y8 u; ^( D! e: P
set oscillation 0

9 ^1 b! {3 M( g( |$ F! q5 \5 Y3 o3 H6 o
set rand-dynamic 0

" Y! ^' w/ O& m; t; J: Wend
+ b' S7 l+ }) H, b& u5 g
. X8 ^. s6 p; P$ ]7 g, ]' l  \to setup-turtles
: _. b# g  H+ U; N0 a# ]. eset shape "person". t! H$ o8 s# g* Y
setxy random-xcor random-ycor& r, g1 K& d4 F) ?  ^6 g1 P
set trade-record-one []& }4 J) Z- e* B: G; U
( Q! s: f/ f1 Y( }4 b: x
set trade-record-all n-values people [(list (? + 1) 0 0)]
: K4 h8 N$ f) W0 S# P3 ]
( ?6 ~- r( U  _0 o/ P+ |: y  T
set trade-record-current []
" R5 k* Y% `$ u7 Cset credibility-receive []' ~6 K2 n/ x/ U6 k6 g
set local-reputation 0.5
7 k8 b5 u& ^! ]5 cset neighbor-total 0* a" P6 B* K% _* P# N4 P! ?7 ?
set trade-times-total 0
: a8 p1 H8 r: [2 Y: L( o" Tset trade-money-total 0
2 u( y5 o' t2 b' N+ vset customer nobody
$ s( f+ e  k% O* Z! k# ~! m1 u- gset credibility-all n-values people [creat-credibility]3 k: z, Q% |6 G2 J& Q0 e' H
set credibility n-values people [-1]3 ^. {6 d: z% ^; j. r
get-color
- O* b9 J  r% k+ z# v6 L

$ V5 M: A8 k: E- m* S# G0 ^end* D+ ]9 _6 v9 x+ y7 }3 W% r6 o7 N

' n# R# l! u0 K3 uto-report creat-credibility
; \; ]/ H) ~. p8 {3 I: Ireport n-values people [0.5]0 u( u' V( E) T; A7 I
end
- z- l1 E, F& M5 Y" [  A! r& k- ]& U$ _* A8 x
to setup-plots
* c5 \) j2 }! D1 J# {# v. R! h
1 B- N" E. ^" y  kset xmax 30
, |* i# w/ j3 p! z2 ]

3 c3 ?9 ?' ^# g. |! P- F% l' A9 Iset ymax 1.0

+ K+ D' w% ?5 ]' s4 z# b0 l5 w2 w0 J7 z* u3 S1 _
clear-all-plots
. T* \0 z" A3 [) X6 G$ ]3 R
8 O2 L+ e' p+ c6 a, K
setup-plot1
# x' L2 F, ~" N# P
$ N6 v0 b- ^' X: a+ G- d
setup-plot2

: j+ W8 |/ {3 O4 H5 b( r7 Y- |; K' Y, A$ m( t' d* z
setup-plot3
/ O/ {5 A  S5 I0 ^7 r
end
/ Y: M; ~4 A) u4 _+ \2 x! m; N4 A+ m+ M6 h' m8 q; x2 F# A
;;run time procedures9 E. N. j0 T0 i& ~
% J: }, A% m  U% B7 d* v- H
to go) v; z# y7 L# I$ n5 ^2 }

- n7 ]) Q. j3 Z4 Aask turtles [do-business]
/ m* |# Y, q; P' y( B
end" x% K* B0 G2 N( g
5 l- M; M! c: C9 a
to do-business + [2 {- I! `4 C/ F0 e2 d6 H
4 d4 i' W" F0 k9 z4 e4 B

( y% S& b5 [. `  J- O8 Yrt random 360

* Z5 Y8 s5 E; Q3 a
1 s6 a3 b' x: I" wfd 1

6 r- Q2 k, L) B% |; y. ~, J3 i
! T; e3 S! l5 ^4 j+ e- sifelse(other turtles-here != nobody)[

/ J- ?6 d& t$ O2 S  \9 Q# D/ l7 h6 M5 N7 o  Q* H. Q
set customer one-of other turtles-here

1 H: s9 V/ [& z2 i9 ?
! G# _% P0 Y: z;; set [customer] of customer myself

& h! Z2 c: j5 ^: l7 @  R( b4 c% o( [9 z+ M0 g
set [trade-record-one] of self item (([who] of customer) - 1). R" u" \9 P6 i
[trade-record-all]of self# b, L5 Q4 L2 G* e& W6 Q& f
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; G: H1 n% G" }, ~

5 B* K, n  C, m7 H5 o/ b( [set [trade-record-one] of customer item (([who] of self) - 1)
- l0 L& D  @% J& X1 g[trade-record-all]of customer

) U( N. f7 ~$ ?/ a+ }! y% |$ p2 N# a/ B' H; E" H
set [trade-record-one-len] of self length [trade-record-one] of self

9 N0 g' x& A+ g6 |: a8 ~; c
: }! o2 E  @" B: N' p+ d' ?" H( v: @set trade-record-current( list (timer) (random money-upper-limit))
! i: `  h9 ~) X  l  O

# }/ ?$ y  O$ Oask self [do-trust]8 K3 _. S% b0 i
;;
先求ij的信任度
7 ^7 L9 ~$ }/ }; Y' o2 r* e. b7 j. {+ x+ _
if ([trust-ok] of self)
( ^( U6 u0 I: e6 Z;;
根据ij的信任度来决定是否与j进行交易[
3 D# a& w) }* ]3 a" e4 U' |ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  s  `0 }7 p# P# D2 ?9 G$ d

4 [% ^% H8 c2 H[

4 U9 R: g* N& p5 |" }7 t5 w$ F6 o, G. o2 V9 B/ A* H
do-trade
( c+ j1 c( ?# d  g

; y, |7 K$ Q1 q) r8 }& wupdate-credibility-ijl

2 e& `* E6 H& z- w. `+ E5 X: M% e1 p' f+ y% ^/ d
update-credibility-list
. s, K1 j8 T: C' F8 ~8 k

" w  J9 h0 C5 x) r1 o4 p4 D/ B- U' M0 W# L  T- K. a0 u6 m
update-global-reputation-list

0 X, x! j( T4 S8 r/ a+ `# M& a6 D+ z  r
poll-class

+ C% V2 L; M* ]2 W
1 k, m/ b% C4 Xget-color
, w2 H2 g7 d* c, V

3 `9 \1 G, F0 @+ T" k]]" Y4 X8 ^' n- @
! n5 u- s+ P8 p0 ^3 T
;;
如果所得的信任度满足条件,则进行交易) L/ f$ s( B- e2 g- x3 E

. l% s1 f% N! q9 N[
+ H9 W( ?+ p3 K, e
5 ?, m" f$ a! n4 `- R! ]; n
rt random 360
2 y, E7 g5 E- e0 d

1 Y$ X& h7 U, R+ P4 U9 O6 m! Z- Sfd 1

+ B" ^# Z# l! [5 T
8 d9 {5 z( x3 E]

& j$ Z- A  ^2 f# R1 G. O, p
" }1 N8 _) f9 t6 I  U1 `end

  [$ a: ~6 m% K. H. g" L' c1 b( a; r7 z% I! u7 ~5 i2 n
to do-trust
, [' }  }1 L/ ^set trust-ok False$ @: n0 p3 |0 e7 N# ]5 I

9 b% g4 l1 c) o
8 I  b; X4 `  l& @5 ~4 o
let max-trade-times 0
9 b9 q6 j3 U. l7 G2 Lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! I7 a. Y6 i+ l8 e) h' D+ d+ r% t
let max-trade-money 0; y0 V/ B: T" E* E" M9 }+ @
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  w3 L! c/ S" ]9 t7 ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 y1 `! f0 J* w+ E/ s  M' f# V
. ^! E& ~6 z4 e# [9 n

0 n( @  C) K; c* t% P8 r% m, bget-global-proportion
! p% r! ^; ^1 Z& elet trust-value* c4 R! t6 c" 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)

, k) ?4 y" F/ J4 Zif(trust-value > trade-trust-value)
; X% r( M! H4 c0 \0 B$ W5 @[set trust-ok true]
: Z$ z) I: R8 F. o9 G. b2 b/ rend
+ c+ z5 c0 O9 n$ a( q' I1 Z: f$ U% E4 }8 F: x( k1 [3 w2 o7 N
to get-global-proportion
3 E( @7 I+ N( f- O2 R0 b' Yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- Q, U8 v$ h( q. G: `; b
[set global-proportion 0]) g: Q( ?$ Z& i/ k3 Z7 M. u
[let i 07 c+ V4 \$ O9 n0 J
let sum-money 0
. g! z# |+ s7 rwhile[ i < people]% `4 {7 s$ T& s# X2 U
[
; }1 f. c) i% v7 g4 r# G$ Vif( length (item i
) y. x0 `7 T0 `/ \9 T, L[trade-record-all] of customer) > 3 )

! Q4 N; |3 p0 q" }3 X' J[, K0 z' B) A$ X' J& @
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ d% B4 {  L/ f; v) w" o8 k
]
  r5 M. N" B( E( ]]; c/ |# r! N: s) `# s
let j 03 E+ {3 k! M7 i
let note 01 o) p. w* P+ ~
while[ j < people]2 \6 M+ n. y: [( z. |! Y) `7 r
[( e1 z( N+ y. P( G9 @' T0 y
if( length (item i* [2 M0 s4 M3 o+ B; m$ m4 Y" O
[trade-record-all] of customer) > 3 )
  C# F" o0 s/ S# j# R" A' k
[/ r: V9 Q0 b' f; l8 Q* ?% }
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): C' e7 ], q" ~% |, [/ W- v) ]
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]# H3 d7 y: n" T6 f4 g* ]
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 j9 u/ G3 a8 d* e) g
]3 z1 O) [# W, z# \, i
]& e/ ]1 _3 q0 i$ x; I5 G" k( W
set global-proportion note
, a2 }. N& c& s" R5 u; e" p3 m]
+ k% O' Z8 L% M" c+ a0 Oend6 F) C. y7 ~5 v) W$ O2 `

2 w) X1 G/ _) d2 `5 Hto do-trade1 j4 X  ?& T- B: u/ E5 s# [1 x
;;
这个过程实际上是给双方作出评价的过程4 f& l: ^- `1 O( F1 O% i, |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( x& O5 f% ], ~% t  S/ q9 y9 w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) o! v, @$ O( c2 _' U
set trade-record-current lput(timer) trade-record-current
$ `# k7 e+ z, @* y;;
评价时间4 Z* c7 b) s+ F
ask myself [
. m0 Q% }7 D: _8 T4 Zupdate-local-reputation' t5 I/ C+ B) m0 k" z" k8 ^: L8 G& ^+ {
set trade-record-current lput([local-reputation] of myself) trade-record-current- e" ~& k+ _7 i/ n; W
]
; |6 C- s0 y/ }, A: E) g5 t# pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, S/ M6 m5 K; r4 L
;;
将此次交易的记录加入到trade-record-one3 f4 F, Q! F4 l2 i- Z% t
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
, C3 _5 g) V; _7 r& r% T0 Mlet note (item 2 trade-record-current )
" h# f! Z- J# l* X# _# t& ^  J( h! Jset trade-record-current
: v9 q' N3 c! V# _) |' j/ ~(replace-item 2 trade-record-current (item 3 trade-record-current))

, y  |& ]( ~) y7 x( g  E; |& bset trade-record-current
2 m& c1 V) f+ g1 b! a$ u) W(replace-item 3 trade-record-current note)
2 [' l/ s8 Z* D2 l: C0 |( u9 w% E$ |! p; [$ t+ o

* d' `3 j4 S% n/ ^2 F" Wask customer [
" M3 G! C4 j6 w! cupdate-local-reputation1 Y, s; m% a3 I. @
set trade-record-current
  ~8 t8 A, t9 a- u(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# ?( s9 ]5 t0 F1 s+ F  S" X
]! i# P3 m- M- {# w" y7 s9 {

: H' W  a0 |$ h; Y6 A

0 Y. V" Q- l( [0 R; ^# [3 mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 T0 S. n+ ~" R6 q! I0 |* q

% v- y7 t. Z3 ^3 c  rset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  Q$ d3 x- X* r$ R& K
;;
将此次交易的记录加入到customertrade-record-all& `1 C. @* }+ T0 m. X
end8 M3 G, r* R4 h( o3 g- N

. \8 @* U3 B+ t( K6 l9 yto update-local-reputation
6 |( O4 o0 P. `$ g& Kset [trade-record-one-len] of myself length [trade-record-one] of myself
1 u% ^& K2 j+ h! K  P+ g0 r: t: z

- |0 M$ ~* g( A3 d;;if [trade-record-one-len] of myself > 3

: Z4 c7 ]: T9 i4 g" ?) m0 ^8 cupdate-neighbor-total
: l9 Y" Z; }5 C;;
更新邻居节点的数目,在此进行
' }, T* o7 r1 u& Z# V: Klet i 3
8 i% g8 }: Y) B. G; E1 T0 X! Elet sum-time 0. f) a! }) r0 X8 b
while[i < [trade-record-one-len] of myself]' Q- v. ]# M' ^: z1 H0 c
[% F+ @+ l0 y: v  _. W# C# p
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( ]  \6 c# ?0 z9 Z/ H! iset i& [& g% I& j% \- U" q+ Y8 {
( i + 1)
" x: i% {0 l  h. c' X
]- u1 h( k! r* A  ^, m
let j 3# i5 u/ ?# }: }  |! k
let sum-money 0% ?  H. Y5 t/ N8 W8 D
while[j < [trade-record-one-len] of myself]! S) y! {1 U- ^! L1 V4 j
[- @/ D* @2 F# c4 g% S- u( w; 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)9 o4 S: O' W8 k+ }0 Y4 `* }# }4 T2 _  z
set j
8 h7 t8 e2 l7 m! S" f( j + 1)

$ v! v: z! p7 o- g]' B. U/ R6 H, v) x, M
let k 3
8 U" s) X( N5 Z/ U" I' _let power 0
# Z* z0 l& U! E+ {let local 09 i. C( ~8 G% X. F* U% n0 [4 h
while [k <[trade-record-one-len] of myself]; l& h* [& V7 o* H; m
[4 d; Q: Z. _1 `) E9 T
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) " C* [' ^, |/ g; o! P8 b. B
set k (k + 1)
$ s3 \7 B6 Z3 g]4 \0 E4 S. w; p8 a% Z+ W
set [local-reputation] of myself (local)7 H0 A, Y9 G4 g. i
end
/ {( w% e0 l  C" C
3 p2 ^. h( W3 X2 p# bto update-neighbor-total
' P* ?$ |# }7 k7 n" e* k& k& D3 a) q
: J- y& a. u3 F$ [: fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ q0 X4 j$ d* q' a( \. {/ u* B2 ]; b, x+ A- D, x- ^

4 |- ^3 D+ m% g9 g9 O" R' G* jend
- {! z, ^/ {  [! _! `  A
  W. W) e2 [+ \to update-credibility-ijl * O  n3 B; r; q8 x
6 W  i, [2 E0 F+ e( ]
;;
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 m  U5 [! r) C( i# M* ~let l 09 W9 T( C' k4 h, u
while[ l < people ]
) k4 R4 \$ i- g7 F- H4 B1 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
; v, |/ u; O' `" W# s[
) y5 m: H' m. x0 l- m; d0 plet trade-record-one-j-l-len length item l ([trade-record-all] of customer)% c' \, l4 C2 _1 I  j
if (trade-record-one-j-l-len > 3)
4 Y4 y$ A8 q' B& F' M/ s2 E: {[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
4 Q& s6 D" J& c) slet i 35 v' X4 ?, l$ |7 T8 H1 N
let sum-time 07 b7 }- J$ k" D% x$ V. g
while[i < trade-record-one-len]7 v: U* L7 u1 R0 @
[
7 B3 @: h4 E7 vset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! R3 d" y; P2 k
set i: n) g& y/ i, c) d
( i + 1)

1 i* Y! B. \: G% s4 Z]
: I' ]' y  P' r8 m1 L9 v' \let credibility-i-j-l 0
2 \  H2 C; b. ~9 B) L. y3 p! M' B;;i
评价(jjl的评价)
- M+ R! {+ Z' n  ?  j" |3 Qlet j 3% w) e  l' i+ I6 r& v! c' U% C
let k 4
9 U( o' Y6 l4 B9 G- x3 Bwhile[j < trade-record-one-len]
+ {2 S+ F2 k1 Y  n3 n! @" ^[
, L0 l  G0 J: _( F# `% [3 g7 B' Xwhile [((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- L9 V( f& g! t9 s# s' A. 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)/ a% L: V# ^0 f" G
set j
3 \) c1 E9 H6 b( j + 1)

# i: `5 n9 x; K# I8 W, [( ~]' S$ H- l( M" d" z( ^) l1 Y
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 ))4 |* t* @- I, j4 L1 e
1 y) U- F3 A1 f

, ~3 a+ {  \) W9 k7 ]! W* ]let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 R' Z% S1 C. t% c/ o5 s
;;
及时更新il的评价质量的评价# A# c9 D, g) V4 e3 e1 R* c4 A+ Q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  T; A- M6 k$ A' B
set l (l + 1)
( f/ U8 T+ g2 {$ R+ f]! @  g" T$ m' g' e
end
4 L. W  m. U4 N' e# Z. l; Y! E0 \( s
+ R  ?. P: e% i. Z& ~9 M; E6 gto update-credibility-list8 a) l+ N. B5 M! ^
let i 0
  ]& W4 x5 G: u$ N# o4 R! x+ W. Owhile[i < people]0 u$ \3 U, V* P0 M
[: s. q* Q9 _" `8 l& M" e* r
let j 0+ O8 ]7 \3 d' x2 [6 E5 j: O
let note 0( X/ H, r, H" q6 C0 t
let k 01 H. c9 t3 ^8 J" |' e7 E
;;
计作出过评价的邻居节点的数目
, b( d4 E- a4 W+ A$ a, T: s% Mwhile[j < people]8 X  \' W5 i# \) R& C1 ]& T
[
; ?" \$ c& _4 \- [if (item j( [credibility] of turtle (i + 1)) != -1)- o' W. G/ m7 ^& L8 K+ d+ b4 N* T
;;
判断是否给本turtle的评价质量做出过评价的节点
+ C0 I7 V3 E8 z1 Q/ E1 \+ p/ G! @[set note (note + item j ([credibility]of turtle (i + 1)))
9 r* m' }9 q" B, k* f- G;;*(exp (-(people - 2)))/(people - 2))]

( T1 l: G' b; V: v& t9 e, O' Wset k (k + 1)
8 ^7 V+ B) s- t2 D' r/ D7 z]$ _( \! d. R9 t, I. s( q! d
set j (j + 1)
6 N4 K( V2 h, h  H; n7 z]' V  @* [: `$ j  y- G4 t/ f  y2 q
set note (note *(exp (- (1 / k)))/ k)' }! R& a# }* s  G; O
set credibility-list (replace-item i credibility-list note)
0 g$ r/ ^. f) X: y! X0 u8 Kset i (i + 1)
" q- _! \$ q4 ^# [6 E]
; D9 j6 H6 @( b9 z7 y- l5 m% Hend
4 v! b7 v/ X1 C# y# f8 V1 A
7 u. S! h9 s& N  ]2 oto update-global-reputation-list
9 e2 n: y( ^6 Y( m5 _8 Ylet j 0
4 n, w. K5 O6 D; f* K+ Uwhile[j < people]
9 r: f5 g! U# i: @" Q' _[. W( {7 s9 g# [& f
let new 0
5 B! g9 M- h7 o, f. Q6 D;;
暂存新的一个全局声誉1 J% v+ D# n7 S1 l) U( K
let i 00 y" @! t4 c& W
let sum-money 0: D3 f, m+ }  N/ F$ x: q0 [( Q
let credibility-money 0
! V% f- |2 _, G2 _. ]9 {5 x5 Mwhile [i < people]
% X3 G8 o& y; z+ g: }/ ]; C[
7 `. v4 y4 R3 Y1 t' q6 Zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 v) z& D7 c9 `  K! s- r* F0 T
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# `! `, S" _0 G* \6 @7 Rset i (i + 1)- N7 M7 @* J) h6 s8 O& z
]6 F) s# I9 W/ N) `
let k 0
- w: Q  E0 c! slet new1 0( |9 J/ |' a2 B$ Z! O8 U
while [k < people]
, W. {* w5 l0 ?% }9 b[
5 y6 X6 C2 e6 W: R) M* i: Iset 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)! |7 k) S& a; Z2 M5 A: O
set k (k + 1)& L5 C" Q0 H, {' V2 X9 x( h2 H
]9 L7 H4 c1 H$ y0 f
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ M+ t6 o/ d1 I7 jset global-reputation-list (replace-item j global-reputation-list new)7 Q! s; m7 M+ I  Y6 {# ]
set j (j + 1)
5 v" a% K. D: K]
( V( ^7 N" @+ e. p( \  Yend
3 H9 r, _/ |+ Z' P: |7 A9 ~7 D! F) n  a7 `$ M, O2 Q4 E

$ K, d3 t* {* e" j' z3 N
! f$ @/ s, @- Cto get-color! ?1 \( a3 C+ W) y+ G8 f) F. w

$ E3 x5 j  ^/ H( Gset color blue

( }' l3 u4 [0 K8 W) q- u+ k' t: E4 C, Rend
. s8 c2 W5 I5 S) Z
+ o7 f0 m  A4 F1 {1 m' gto poll-class) }7 O; J: P& ]# v2 S: V5 G
end
1 o( s% O& h" Y$ t- @: e: Q# u1 ]! b* e4 R
to setup-plot1$ ~( D7 l, G( N$ g' B% t+ x
6 @$ E$ _- F! {! s
set-current-plot "Trends-of-Local-reputation"

2 n3 l# w$ X) x; n2 n9 I( N  Y, l6 S- h, V6 C0 k1 g  g
set-plot-x-range 0 xmax

6 L1 q# }: P; t
5 D3 d8 p+ {- J2 G2 T, v4 t  u1 zset-plot-y-range 0.0 ymax
) Y! o& t' e& @7 o9 \
end% K+ J7 K( p9 W9 s5 m! ]
* N  A- g7 d3 j6 @) f! i
to setup-plot2
3 W4 S* i! R; n/ w( F
, R5 v1 n8 c# uset-current-plot "Trends-of-global-reputation"

0 ]" K$ I- ^( ?* c( f& W
. d: M3 _. Q* t0 Z. S6 H  D1 Yset-plot-x-range 0 xmax

) q. r$ F/ a  e/ }5 o+ k4 e: i$ R; x: c" z9 s+ Q! \! a6 F
set-plot-y-range 0.0 ymax
2 f# \; t$ P7 V0 C4 X" u# u+ `9 W
end, ~( x* q+ |/ E" u/ B* \  L

4 N4 Y& @5 R3 {5 Xto setup-plot3
! f5 a- Z# t/ u$ j
* b) O3 ]& h$ |/ [0 lset-current-plot "Trends-of-credibility"

+ [: |6 A$ O; ~7 \! H' c
! g% ^& k* f( E; q1 c- Gset-plot-x-range 0 xmax

- B* P, O0 Y6 V3 h* f
7 ^1 ^8 o) o5 W7 D  Hset-plot-y-range 0.0 ymax
3 f6 p+ c6 ^9 ~) ?  Q$ i$ C  R6 c; I
end
( L; f* ]8 X' ^0 Q  Z+ {0 H# s; y7 y/ E. V# n( `) q4 A
to do-plots
& `* d- a- q$ u2 X) Z" v% `% bset-current-plot "Trends-of-Local-reputation"
' \' Q7 a# x% D/ H; Rset-current-plot-pen "Honest service"; J0 a3 V) Y" `
end
' p/ t, u) X9 A1 U7 T" }3 a" x6 S, v+ p/ t
[ 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.
! J: N& z* b! B% n6 d$ S7 K$ e3 L/ a9 j6 k9 h9 A) ~; ]4 }2 G1 w
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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